CN112698774A - B/S architecture multi-expert online negotiation plotting system based on WebGIS - Google Patents
B/S architecture multi-expert online negotiation plotting system based on WebGIS Download PDFInfo
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Abstract
The invention relates to a B/S architecture multi-expert online negotiation plotting system based on WebGIS, wherein the system comprises: the system comprises a server and a plurality of clients in communication connection with the server; the server comprises: the system comprises a user function module, a GIS function module, a plotting symbol library module, a negotiation plotting function module and a scheme management function module; the user function module is used for controlling the client side to enable a user login interface to be displayed in a visual interface of the client side; the user function module is also used for receiving verification information input by a user in a visual interface of a client display user login interface, and performing user registration, user login, user addition or user deletion according to the verification information.
Description
Technical Field
The invention relates to the technical field of collaborative plotting, in particular to a B/S architecture multi-expert online negotiation plotting system based on WebGIS.
Background
Collaborative plotting was originally used for military purposes, and is currently used by some foreign forces for military planning and command. A WebCOP, a network general situation map developed by the united states army in 2004, which is based on the Arcgis platform and displays various related information about the battlefield, including: the system comprises a map, a report, various combat facilities and relevant information with time marks and spatial positions, and a commander can acquire the information in real time and make a coping decision through the system. The technology is used for local wars and military simulation exercises by the American army for a long time, has the real-time property of information transmission and the convenience and intuition of map plotting, and is thus commented by the army. In China, military collaborative plotting is developed later, the development of a single-user plotting system is mature, and the development of a real-time military collaborative plotting system based on a network also has certain achievements. Nowadays, different technologies for collaborative plotting have been proposed by many people, and a multimode mobile collaborative plotting framework (M2CPF) model (2012, P159-167) was proposed by caogee et al in 2012 for the mobile collaborative plotting problem at the ICACII conference, firstly, the key elements are plotted to move according to the common features, secondly, a multimode flexible mobile collaborative plotting framework model is designed to meet the high dynamics and complexity of the mobile environment, and finally, a collaborative perception concurrent control technology is introduced to make it fully applicable to the mobile collaborative environment. Madele et al designed a collaborative plotting system based on an Arcgis platform Net framework, the system adopts a 'master control-user' application mode (computer engineering and design, 2013, 34(6):2235 + 2239.), a master control end carries out data management and conference control, participants carry out plotting communication on target areas according to division of labor, and the system is mainly characterized in that a client uploads primitive modification operation and a server carries out data warehousing and database updating. Zhang Sheng (proceedings of academy of sciences of Hebei province, 2011,28 (3): 56-60) designs and realizes a mobile terminal real-time collaborative plotting system based on a J2ME framework, and is characterized in that basic graphs are stored in the mobile terminal to facilitate plotting and are transmitted to a server through a wireless network, and other users synchronously update through the local graphs.
At present, other people' S collaborative plotting schemes are mostly designed and realized by adopting a single-machine C/S architecture, a single-machine collaborative plotting system is mostly supported by hardware in the using process, the mobility is poor, and when an emergency occurs, real-time collaborative work cannot be effectively carried out.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a B/S architecture multi-expert online negotiation plotting system based on WebGIS.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, an embodiment of the present invention provides a B/S architecture multi-expert online negotiation plotting system based on WebGIS. The system comprises: the system comprises a server and a plurality of clients in communication connection with the server;
the server comprises: the system comprises a user function module, a GIS function module, a plotting symbol library module, a negotiation plotting function module and a scheme management function module;
the user function module is used for controlling the client side to enable a user login interface to be displayed in a visual interface of the client side;
the user function module is also used for receiving verification information input by a user in a visual interface of a client display user login interface, and performing user registration, user login, user addition or user deletion according to the verification information.
Preferably, the first and second liquid crystal materials are,
the GIS function module is used for controlling the client to display a preset map in a visual interface of the client;
the preset map consists of a work base map and a work mark drawing layer;
the work base map is an OpenStreetMap map;
the work base map includes: vector diagrams, remote sensing diagrams and traffic base diagrams;
the job ticket drawing layer is a WFS and WMS service chart issued by GeoServer;
the GIS function module is also used for receiving an operation instruction of a user on a map in a visual interface of a client for displaying a preset map, and translating, rotating, amplifying and reducing the map in the visual interface of the client according to the operation instruction;
the GIS function module is also used for receiving a selection instruction in a preset work base map in a visual interface of a client for displaying the preset map by a user, and displaying the corresponding work base map in the visual interface of the client according to the selection instruction.
Preferably, the first and second liquid crystal materials are,
the plotting symbol library module is used for controlling the client side to enable a static plotting interface or a dynamic plotting interface or a plotting style modifying interface to be displayed in a visual interface of the client side;
the plotting symbol library module is also used for receiving a management instruction of a user for static plotting in a visual interface of a static plotting interface displayed by a client, and performing corresponding operation according to the management instruction;
the management instruction comprises: the method comprises the following steps of symbol adding, symbol storing, symbol editing and symbol deleting operation instructions;
the static plot includes a disaster type plot, an emergency rating plot, and an emergency type plot;
disaster type plots include fire plots, traffic accident plots, geological disaster plots, building collapse plots, flood disaster plots, landslide plots, and seismic disaster plots;
the emergency grade plotting comprises an emergency grade I plotting, an emergency grade II plotting, an emergency grade III plotting and an emergency grade IV plotting;
the emergency type plotting comprises an emergency power supply plotting, an emergency water supply plotting, an emergency parking plotting, an emergency communication plotting, an emergency maintenance plotting, an emergency material plotting, an emergency hospital plotting, an emergency refuge plotting, an emergency fire fighting plotting, an emergency vehicle plotting and an emergency resource plotting;
the plotting symbol library module is also used for receiving a management instruction of a user for dynamic plotting in a visual interface of a dynamic plotting interface displayed by a client, and carrying out corresponding operation according to the management instruction;
the dynamic plot includes an arrow plot, a line plot, and a planar plot;
arrow plots include single arrow plots, double arrow plots, squad plots, clinch plots;
line plotting includes curve plotting, polyline plotting, free line plotting, and flood line plotting;
area plotting includes free-surface plotting, plot of aggregate, sector plotting, circle plotting, rectangle plotting, and closed-surface plotting;
the plotting symbol library module is also used for receiving a modification instruction of a plotting style in a visual interface of a plotting style modification interface displayed by a client by a user, modifying the plotting according to the modification instruction and acquiring a corresponding modification result.
Preferably, the first and second liquid crystal materials are,
the negotiation plotting functional module comprises a conference functional unit, a communication functional unit and a collaborative editing and concurrency control unit;
the conference function unit is used for controlling the client side, and enabling a marking group interface to be displayed and created, a marking group interface to be added and a marking group interface to be withdrawn in a visual interface of the client side;
the conference function unit is also used for receiving a creation instruction in a visual interface which is displayed by a user at a client and used for creating a plotting group interface, and acquiring the plotting group according to the creation instruction;
map content in the visual interfaces of the clients within the plotting group is consistent;
the conference function unit is also used for receiving a conference entering instruction in a visual interface which is displayed by a user at a client and is added into a plotting small group interface, and entering the plotting small group according to the conference entering instruction;
the conference function unit is also used for receiving a conference quitting instruction in a visual interface of a plotting group quitting interface displayed by a client, and quitting the plotting group according to the conference quitting instruction.
Preferably, the first and second liquid crystal materials are,
the communication function unit is used for receiving a plotting message input by any client in the plotting group and pushing the plotting message to other clients in the plotting group.
Preferably, the first and second liquid crystal materials are,
the communication function unit is used for acquiring a plotting message input by a user at any client in the plotting group, packaging the plotting message to acquire packaged information, and transmitting the received packaged information to other clients in the plotting group;
and other clients in the plotting group obtain plotting results corresponding to the packaged information on a work map according to the packaged information.
Preferably, the first and second liquid crystal materials are,
performing plotting message packaging on the plotting message to acquire packaged information, specifically comprising:
constructing an XML document, and adopting the plotting message to operate as XML of a root node;
adding operation type XML child nodes, element modification operation type XML child nodes, element deleting operation plotting operation and dividing into element type XML child nodes, element adding operation type XML child nodes, element deleting operation type XML child nodes and object locking operation type XML child nodes;
the elements and the elements have three forms of point, line and plane;
compressing the elements or the elements into a character string form, adding the character string form into an XML child node, and adding preset basic information, graphic attributes, graphic definitions, graphic geometric form attributes and element layer information into the XML child node.
Preferably, the first and second liquid crystal materials are,
other clients in the plotting group obtain plotting results corresponding to the packaged information on a work map according to the packaged information, and the plotting results specifically include: and other clients in the plotting group obtain plotting results of the added elements or the elements, the deleted elements or the elements and the modified elements or the plotting results of the elements on the work map according to the packaged information.
Preferably, the first and second liquid crystal materials are,
the collaborative editing and concurrency control unit is used for locking the selected elements when a user edits the elements at any client in the plotting group to acquire locking processing results of the elements;
the locking processing result of the element is that other clients in the plotting group do not have the authority to edit the element;
the collaborative editing and concurrency control unit is used for unlocking the selected elements when a user finishes editing on the elements at any client in the plotting group to obtain unlocking processing results of the elements;
and the unlocking processing result of the element is that other clients in the plotting group have the authority to edit the element.
Preferably, the first and second liquid crystal materials are,
the scheme management function module is used for acquiring historical emergency plan information matched with the pre-acquired disaster occurrence specific information from a pre-set plan library according to the pre-acquired disaster occurrence specific information;
the historical emergency plan information comprises information of a processing method of historical emergency disasters;
the scheme management function module is also used for storing, backing up or deleting the established pre-scheme according to the preset rule.
(III) advantageous effects
The invention has the beneficial effects that: the B/S architecture multi-expert online negotiation plotting system based on the WebGIS directly integrates the client on the browser due to the adoption of the B/S mode architecture, gets rid of the heaviness of a local client form, any user can access the application program through the Internet, and meanwhile, the cooperation plotting of the WebGIS can participate in a conference and a negotiation anytime and anywhere, so that precious rescue time can be effectively saved, and a good scheme support is provided for emergency negotiation.
Drawings
FIG. 1 is a schematic structural diagram of a WebGIS-based B/S architecture multi-expert online negotiation plotting system of the present invention;
FIG. 2 is a functional structure diagram of a WebGIS-based B/S architecture multi-expert online negotiation plotting system of the present invention;
FIG. 3 is a user login interface in an embodiment of the present invention;
FIG. 4 is a static plotting interface in an embodiment of the present invention;
FIG. 5 is a dynamic plotting interface in an embodiment of the present invention;
FIG. 6 is a plot style modification interface in an embodiment of the present invention;
FIG. 7 is a create emergency plot team interface in an embodiment of the present invention;
FIG. 8 is an add plot team interface in an embodiment of the present invention;
FIG. 9 is an exit plot team interface in an embodiment of the present invention;
FIG. 10 is a functional diagram of group online negotiation in an embodiment of the present invention;
FIG. 11 is a schematic map plot according to an embodiment of the present invention;
FIG. 12 is a flow chart of plotting message encapsulation in the present invention;
FIG. 13 is a flow chart of plotting reproduction in an embodiment of the present invention;
FIG. 14 is a client interface after adding point elements in an embodiment of the invention;
FIG. 15 is a client interface after adding line elements in an embodiment of the present invention;
FIG. 16 is a client interface after adding a face element in an embodiment of the present invention;
FIG. 17 is a diagram illustrating a client interface of FIG. 16 with the surface elements deleted in an embodiment of the present invention;
FIG. 18 is a modified client interface of the line element of FIG. 17 in accordance with an embodiment of the present invention;
FIG. 19 is a flow chart of concurrency control in an embodiment of the present invention;
FIG. A is a schematic diagram of a front-end display layer, a business logic layer and a data layer in the WebGIS-based B/S architecture multi-expert online negotiation plotting system;
FIG. B is a network structure diagram of the B/S architecture multi-expert online negotiation plotting system based on the WebGIS;
and the diagram C is an overall technical route diagram of the B/S architecture multi-expert online negotiation plotting system based on the WebGIS.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
A complete WebGIS system mainly comprises three parts, namely a client map engine, a server and a database. In combination with this situation, the overall network structure diagram design of the WebGIS-based B/S architecture multi-expert online negotiation plotting system in this embodiment is shown in fig. a and B.
The technical route is mainly divided into two modules, namely collaborative plotting concurrency control and a message network pushing mechanism according to actual conditions.
Through the integral analysis of the system and the inquiry of all data, the B/S framework multi-expert online negotiation plotting system design front end based on the WebGIS takes Webstorm as an integrated development environment, the front end development adopts a conventional Web development mode of HTML + CSS + JavaScript, the background development adopts Eclipse as a development platform, and the design development is carried out by adopting an SSM framework, namely the mode of Spring + SpringMVC + MyBatis. The server uses a lightweight Tomcat server.
In the system development implementation, the GIS functional part is mainly developed and designed by adopting a mode of OpenLayers + GeoServer + PostgreSQL/PostGIS, and the method specifically comprises the following steps: the map display part at the front end mainly adopts an OpenLayers framework, the map service uses an open-source GeoServer map server, the spatial data of the system is stored by using an open-source PostGIS, and the attribute data is stored by using a PostgreSQL database.
The list of software tools required for platform implementation is as follows:
referring to fig. 1 and fig. 2, the present embodiment provides a WebGIS-based B/S architecture multi-expert online negotiation plotting system, which includes: the system comprises a server and a plurality of clients in communication connection with the server;
the server comprises: the system comprises a user function module, a GIS function module, a plotting symbol library module, a negotiation plotting function module and a scheme management function module;
the user function module is used for controlling the client, and a user login interface is displayed in a visual interface of the client by referring to fig. 3;
the user function module is also used for receiving verification information input by a user in a visual interface of a client display user login interface, and performing user registration, user login, user addition or user deletion according to the verification information.
In practical application of this embodiment, the GIS function module is configured to control the client, so that a preset map is displayed in a visual interface of the client;
the preset map consists of a work base map and a work mark drawing layer;
the work base map is an OpenStreetMap map, and comprises the following steps: vector diagrams, remote sensing diagrams and traffic base diagrams;
the job ticket drawing layer is a WFS and WMS service chart issued by GeoServer;
the GIS function module is also used for receiving an operation instruction of a user on a map in a visual interface of a client for displaying a preset map, and translating, rotating, amplifying and reducing the map in the visual interface of the client according to the operation instruction;
the GIS function module is also used for receiving a selection instruction in a preset work base map in a visual interface of a client for displaying the preset map by a user, and displaying the corresponding work base map in the visual interface of the client according to the selection instruction.
In the practical application of this embodiment, some basic operations of the implementation system of the GIS function module mainly include three parts, namely, public map loading, basic operations of a map, and switching of a map base map.
Public map loading: the map of the system mainly comprises two map layers, wherein one map layer is a work base map, and the other map layer is a work mark drawing layer. For the work base map, geographical position information is mainly provided for negotiation plotting work and the like, a Google map or an open source OpenStreetMap map can be selected, and the system is defaulted to be the OpenStreetMap map. For the job label drawing layer, WFS, WMS service drawings and the like which are automatically released through GeoServer can be loaded. And finally, displaying the map on the interface in a visualized mode.
Basic operation of the map: on an electronic map, conventional basic operations of the map, such as translation, rotation, zooming-in and zooming-out control and the like of the map, are realized. The partial function mainly provides basic technical support for negotiating plotting work and the like.
Switching of the map base map: aiming at different requirements, different working base maps are provided, such as a vector map can be selected in an urban area, a topographic map or a remote sensing map can be selected in a mountain area, a traffic base map can be selected in a traffic field, and the like. Through the switching of various base maps, the required work map can be matched. The core code is as follows:
in practical application of the embodiment, referring to fig. 4, 5 and 6, the plotting symbol library module is used for controlling the client to display a static plotting interface or a dynamic plotting interface or a plotting pattern modification interface in a visual interface of the client.
The plotting symbol library module is also used for receiving a management instruction of a user for static plotting in a visual interface of a static plotting interface displayed by a client, and carrying out corresponding operation according to the management instruction.
The management instruction comprises: symbol adding, symbol storing, symbol editing and symbol deleting operation instructions.
The static plots include a disaster type plot, an emergency rating plot, and an emergency type plot.
Disaster type plots include fire plots, traffic accident plots, geological disaster plots, building collapse plots, flood disaster plots, landslide plots, and seismic disaster plots.
The emergency grade plotting comprises emergency grade I plotting, emergency grade II plotting, emergency grade III plotting and emergency grade IV plotting.
The emergency type plotting comprises an emergency power supply plotting, an emergency water supply plotting, an emergency parking plotting, an emergency communication plotting, an emergency maintenance plotting, an emergency material plotting, an emergency hospital plotting, an emergency refuge plotting, an emergency fire fighting plotting, an emergency vehicle plotting and an emergency resource plotting.
The plotting symbol library module is also used for receiving a management instruction of a user for dynamic plotting in a visual interface of a dynamic plotting interface displayed by a client, and carrying out corresponding operation according to the management instruction.
The dynamic plot includes an arrow plot, a line plot, and a planar plot.
Arrow plots include single arrow plots, double arrow plots, squad plots, clinch plots.
Line plotting includes curve plotting, polyline plotting, free line plotting, and flood line plotting.
Area plotting includes free-surface plotting, plot of aggregate, sector plotting, circle plotting, rectangle plotting, and closed-surface plotting.
The plotting symbol library module is also used for receiving a modification instruction of a plotting style in a visual interface of a plotting style modification interface displayed by a client by a user, modifying the plotting according to the modification instruction and acquiring a corresponding modification result.
In the practical application of the embodiment, in the multi-party emergency expert negotiation plotting, the construction of the collaborative plotting symbol library is an important problem to be solved, but for the current research situation, no standard symbol library is available as a reference standard, and in the gazing "design research on emergency symbols for public safety incidents", it is pointed out that designing a symbol system needs to follow four principles, namely:
1. the symbolism of the symbol should be fully considered while patterning the emergency symbol;
2. the emergency symbol should be a harmonious unity of conciseness and vividness;
3. systematic should be considered in designing emergency symbols;
4. when designing emergency symbols, attention should be paid to the adaptability and feasibility of the symbols.
Based on the situation, the system divides the plotting into two modules according to the actual situation, namely a dynamic plotting library and a static plotting library, wherein the dynamic plotting mainly comprises an arrow plotting, a linear plotting and a planar plotting; the arrow-shaped plotting includes single arrow plotting, double arrow plotting, squadron plotting, clincher plotting, etc., the line-shaped plotting includes curve plotting, broken line plotting, free line plotting, flood protection line plotting, etc., and the area-shaped plotting includes six types, i.e., free surface plotting, aggregation plot, sector plotting, circle plotting, rectangle plotting, and closed surface plotting. The static plotting mainly includes disaster type plotting, emergency grade plotting, emergency type plotting, and the like. The disaster types comprise fire disasters, traffic accidents, geological disasters, building collapse, flood disasters, landslide, earthquake disasters and the like; the emergency grade mainly comprises four grades of emergency grades I, II, III and IV, and the emergency type mainly comprises emergency power supply, emergency water supply, emergency parking, emergency communication, emergency maintenance, emergency materials, an emergency hospital, emergency refuge, emergency fire fighting, emergency vehicles, emergency resources and the like. In addition, the negotiation plotting symbol library construction also comprises a modification design of the plotting style, such as a basic design of the filling color of the plotting, the width of the plotting line and the like.
At present, emergency symbols in China are not mature or standard unified specifications, so that the construction of emergency symbol systems corresponding to various disasters needs to consider various factors in further research, and meanwhile, drawing symbol systems widely applied at home and abroad, such as common map symbol systems and natural disaster symbol systems, need to be referred to when an emergency plotting symbol library is constructed. Meanwhile, four colors of green, blue, orange and purple are respectively adopted in the system to represent the grade of the emergency event.
And finally, the constructed symbol library has the characteristics of simplicity, practicability, scientificity, attractiveness, understandability and the like of map symbols.
Compared with other symbol libraries, the emergency symbol library designed in the embodiment is divided into a dynamic symbol library and a static symbol library, so that the emergency symbol library has the advantage of distinct hierarchy; in addition, the designed symbols are more vivid and distinctive, can be clear to people, and have the advantages of popular and easy understanding and good visualization effect.
The plotting symbol library management mainly comprises operations of symbol addition, symbol storage, symbol editing, symbol deletion and the like, and the emergency object in the invention mainly aims at various natural disasters and public sudden accidents such as earthquake, flood, geological disasters, town fire disasters, traffic accidents, building collapse and the like.
In practical application of this embodiment, the negotiation plotting function module includes a conference function unit, a communication function unit, and a collaborative editing and concurrency control unit.
Referring to fig. 7, 8, and 9, the conference function unit is configured to control the client to enable a visual interface of the client to display a create plot group interface, an join plot group interface, and an exit plot group interface.
The conference function unit is also used for receiving a creation instruction in a visual interface displayed by a client for creating a plotting group interface, and acquiring the plotting group according to the creation instruction.
The map content in the visual interfaces of the clients within the plotting group is consistent.
The conference function unit is also used for receiving a conference entering instruction in a visual interface which is displayed by a user at a client and is added into a plotting small group interface, and entering the plotting small group according to the conference entering instruction.
The conference function unit is also used for receiving a conference quitting instruction in a visual interface of a plotting group quitting interface displayed by a client, and quitting the plotting group according to the conference quitting instruction.
In this embodiment, the conference negotiation function unit is implemented by a series of operation processes, such as establishing a negotiation conference, inviting other experts to participate in a conference, jointly negotiating by multiple experts, unifying emergency plans, and the like, by an emergency disaster reduction responsible expert, and the main function of the conference negotiation function unit is to provide a negotiation plotting environment, see fig. 10, so that multiple experts collaboratively plot and negotiate in the same shared environment.
Referring to fig. 11, the communication function unit in this embodiment is configured to receive a plotting message input by any client in a plotting group, and push the plotting message to other clients in the plotting group.
In the embodiment, the communication function unit mainly provides network transmission for the co-negotiation plotting of multiple experts in different places, and the technical scheme combining XML and WebSocket is designed and realized. Under the condition of multiple users in different places, the proposal of a certain expert in the group or the plotting message is synchronously pushed to other browser ends through a network, so that other experts in the group can synchronously sense the plotting state in real time.
In the embodiment, XML and WebSocket are creatively combined, plotting message network transmission based on WebSocket is provided, the XML data format is used as a carrier of map plotting information through comparison of conventional message transmission data formats, and message transmission is realized by using the network transmission mode of WebSocket, so that collaborative sensing and negotiation plotting reproduction are realized.
The message transmission mechanism of the plotting operation is the key for realizing the collaborative plotting, all messages related to the graphic operation adopt XML with 'Operates' as a root node, the XML can be divided into six categories of element addition, element modification, element deletion, element addition, element deletion and object locking according to the operation, and the 'Operatetype' item is added in a child node according to the operation, so that different processing can be conveniently carried out after the client receives the information.
For server-side operations, the only function is to pass the received message to other members of the workgroup, similar to the text transfer process. The packaging process of the client is relatively complex, and no matter the elements or the elements are divided into three forms of points, lines and planes, the spatial information of the elements is also different. Due to the complexity of spatial information expression, spatial information cannot be directly transmitted, and the system needs to compress the spatial information into a character string form and add the character string form to XML. The most common storage form of the spatial information is a storage coordinate, the point coordinate is the simplest, the line is stored in a form of being decomposed into a point set, and the surface can be converted into the point set according to a certain rule, so that the three forms of the point, the line and the surface can be stored into transmission data in a coordinate form. Basic information, graphic attributes, graphic definitions, graphic geometric attributes and element layer information are added in the XML child nodes, so that plotting reproduction by member clients in the group is facilitated.
In this embodiment, the communication function unit is configured to obtain a plotting message input by a user at any client in the plotting group, perform plotting message encapsulation on the plotting message to obtain encapsulated information, and transmit the received encapsulated information to other clients in the plotting group;
and other clients in the plotting group obtain plotting results corresponding to the packaged information on a work map according to the packaged information.
Referring to fig. 12, in this embodiment, performing plotting message encapsulation on the plotting message to obtain encapsulated information specifically includes:
an XML document is constructed and the plotting message is employed in XML to operate as a root node.
Adding operation type XML child nodes, element modifying operation type XML child nodes, element deleting operation plotting operation and division into element type XML child nodes, element adding operation type XML child nodes, element deleting operation type XML child nodes and object locking operation type XML child nodes.
The elements and the elements have three forms of points, lines and planes.
Compressing the elements or the elements into a character string form, adding the character string form into an XML child node, and adding preset basic information, graphic attributes, graphic definitions, graphic geometric form attributes and element layer information into the XML child node.
Referring to fig. 13, in this embodiment, the obtaining, by other clients in the plotting group, a plotting result corresponding to the packaged information on the work map according to the packaged information specifically includes: and other clients in the plotting subgroups acquire plotting results of adding elements or essential elements, plotting results of deleting elements or elements and plotting results of modifying elements or elements on the work map according to the packaged information.
In this embodiment, the parsing and redrawing of the plot message are actually completed in one step through the code, and the reproduction of the plot with the addition of the element is taken as an example. Element addition: and analyzing the packaged information by the client of other members in the plotting group, acquiring element geometric information, coordinate information, attribute types and basic definitions of the elements, storing the information into the structural body, and starting to plot again.
Referring to fig. 14, the addition of a point element directly separates X-coordinates and Y-coordinates by a separator, and directly assigns the X-coordinate and Y-coordinate to a new point object.
Referring to fig. 15, the addition of line elements is compressed into a point set before message transmission, the order of points is preserved in the conversion process, the client converts coordinates into a multi-point coordinate form through separators, stores the coordinate form in a character string array, combines the point set into line segments through circulation, and finally assembles the line segments into a multi-line form.
Referring to fig. 16, the addition of the surface elements is also compressed into a point set before the message is transmitted, the point set is still stored regularly in the process, the client receives the message and converts the message into a character string array storing point coordinates through separators, and finally all the points in the array are collected into a geometric shape.
And deleting elements, namely directly transmitting the click position of the mouse, and selecting and deleting surrounding elements by other clients in the same operation with the modification user, which is shown in fig. 17.
The element is modified, the original geometry is replaced by the new geometry, and the corresponding element is given a new attribute value, see fig. 18.
In this embodiment, for the message with the added element, the client receives the message and then quickly parses the data, the parsing core is mainly that "Geometry" includes element geometric information, and is divided into three categories, namely, point, line and plane, "Coordinate" includes Coordinate information, and in addition, attribute types and basic definitions of the element, and these information are stored in the structure and are plotted again. The core problem is how to obtain geometric information again through a series of points, the point elements are easy to solve, XY coordinates are directly separated through separators, and the XY coordinates are directly assigned to new point objects; the line elements are compressed into a point set before message transmission, the sequence of points is reserved in the conversion process, a client firstly converts coordinates into a multi-point coordinate form through separators, stores the multi-point coordinate form in a character string array, and combines the point set into a line segment and finally combines the line segment into a multi-line form through circulation; the surface elements are also compressed into point sets before message transmission, the point sets are still stored regularly in the process, after the client receives the message, the point sets are converted into character string arrays storing point coordinates through separators, and finally all the points in the arrays are gathered into a Ring (Ring), wherein the Ring is actually the geometric shape of a redrawn polygon. After the geometry is obtained, the same as the step of adding the elements, an element cache is established, the geometry is endowed to the elements, GUID identifiers and other attributes transmitted in the plotting message are endowed to fields, and finally the elements are inserted into the element class through pointers.
The plotting of element deletion has two modes, wherein the first element GUID to be deleted is transmitted to other group member clients, and then element deletion is carried out through GUID comparison. And in the second method, the click position of the mouse is directly transmitted, other clients perform the same operation with the modification user, and select and delete surrounding elements. The system adopts a second mode, wherein the first mode is used for comparing all elements when the data volume of the elements is large, and the time is consumed, and the second mode can delete the elements without identifier comparison and determining which element layer the elements are positioned in and uniformly delete the elements; however, this method involves element selection and element acquisition from the element set, and the process is complicated, requires more functions to be called, and is relatively resource-consuming.
The essence of element modification is to replace the original geometry with a new geometry and to assign new attribute values to the corresponding elements through a message passing mechanism. Briefly described, the plotting operation performed after the division operation is performed only on the surface element, and it is necessary to analyze and store the original element identifier information and various information of the new element in the structure. The plotting reproduction of the segmentation operation can be divided into two steps, wherein the first step deletes corresponding elements in the element classes through identifier comparison, and the second step adds the elements according to new element information, so that element synchronization of non-modified users is realized.
In the embodiment, the drawing and reproduction are actually completed in a callback function OnReceive, which is equivalent to opening up a new thread besides the main thread of the client, and the control in the main thread cannot be applied to an independent thread. Therefore, whether the control is subjected to cross-thread use check is cancelled firstly, so that a common control can be used in a new thread, and the map control provided by OpenLayers cannot be called in the form, so that the system designs global delegation, various plotting reproduction processing functions are processed by using a thread Invoke method, and all controls of a main thread are called by functions in the delegation, thereby actually avoiding the cross-thread use of the control. The method can also achieve the effect by using the Timer control interval time to judge whether some attributes are changed so as to call the processing function, but the Timer is equivalent to continuously running, so that much meaningless judgment is added, and the occupation of computer resources is increased.
In this embodiment, the collaborative editing and concurrency control unit is configured to perform locking processing on the selected element by a user when the user edits the element at any client in the plotting group, and acquire a locking processing result of the element.
The locking processing result of the element is that other clients in the plotting group do not have the authority to edit the element.
And the collaborative editing and concurrency control unit is used for unlocking the selected elements when the user finishes editing on the elements at any client in the plotting group, and acquiring the unlocking processing result of the elements.
And the unlocking processing result of the element is that other clients in the plotting group have the authority to edit the element.
In the embodiment, the collaborative editing and concurrency control unit mainly realizes the collaborative editing and concurrency control function among multiple experts, and is designed to solve the conflict problem of consultation plotting among multiple experts in different places, so that a good support is provided for formulating a reasonable and efficient plan.
In order to solve the problem of concurrency control in the process of online negotiation plotting by multi-party emergency experts, research and analysis are carried out on concurrency control key points in the process of emergency negotiation plotting by the multi-party emergency experts, a solution scheme of 'plotting lock' is adopted for concurrency control, and the problem of concurrency control in the process of negotiation plotting is reasonably and efficiently solved through proper design
In a multi-user environment of a remote collaborative consultation, plotting operations among multiple users are not affected mutually, but when multiple collaborative plotters edit the same primitive element at the same time, concurrent operation conflict may be caused, so that a concurrency control strategy needs to be provided to solve the problem of concurrency conflict of the system.
Many scholars have proposed solutions to this problem: zjun Sheng et al have designed plotting locks to determine whether graphic elements can be manipulated, and have adopted the "recent user preferred" approach to reduce the number of network requests, thereby improving the response speed of the manipulation. The principle and operation of the method are simple, the efficiency is high, and once the lock is locked, other people cannot edit the graph, so that the user friendliness is weakened.
The system also adopts a method of 'plotting lock', but the specific implementation is different, and an 'Enable' field is added in the process of creating the element class and is specially used for storing the information whether the element is locked or not. When a user selects an element to start editing, the element is immediately packaged into XML with a root node of 'Lock', a message is sent to other member clients in a workgroup, the client finds out the corresponding element number according to the GUID, the 'Enable' field content is changed into 'uneditable', namely the element is locked, other users cannot edit and delete the element, and after the user finishes the element editing, the 'Enable' field is initialized while plotting and reproducing, at the moment, all users can edit the element, and the flow is as shown in FIG. 14. The concurrency control strategy has high efficiency and simple operation, and can complete the concurrency conflict prevention without manual intervention.
In this embodiment, the scheme management function module is configured to obtain, from a preset scheme library, historical emergency scheme information matched with the pre-obtained specific information about the occurrence of the disaster according to the pre-obtained specific information about the occurrence of the disaster;
the historical emergency plan information comprises information of a processing method of historical emergency disasters;
the scheme management function module is also used for storing, backing up or deleting the established pre-scheme according to the preset rule.
In this embodiment, the final purpose of the emergency negotiation is to set up a reasonable disaster reduction scheme for disaster relief and reduction, so that emergency scheme management is an indispensable important part, and the main functions of this part include three main functions of plan matching, plan setting, plan management, and the like.
And (3) matching a plan: in the process of making the plan for emergency disaster reduction, the purpose of plan matching is to retrieve historical emergency plan information from a plan library according to the specific information of disasters, and provide an important reference for the emergency disaster reduction, so that the efficiency is improved, and the precious disaster relief time is saved. The data of the plan library mainly come from a processing method of historical emergency disasters. In the system, we divide the emergency plan types into: fire, earthquake, flood, geological disaster, traffic accident, building collapse, etc. The method is characterized in that postgreSQL is adopted to store the pre-arranged plan feature data, the pre-arranged plan is described in three parts, and firstly, the description of the pre-arranged plan problem is described, namely the basic information of the pre-arranged plan comprises disaster types, disaster occurrence places, disaster occurrence time, disaster levels and the like. The description of each disaster type can be distinguished, for example, the fire needs to consider different fire types, such as solid matter fire, liquid and meltable matter fire or gas fire; the earthquake, typhoon and the like need to consider the earthquake focus center, typhoon center and the like, so different data tables need to be set for storing basic information according to different plan types. Finally, the function of plan matching is realized.
Planning a plan: after the negotiation plotting group negotiates and operates, a unified plan needs to be formulated for emergency, a perfect plan should include disaster information such as disaster types, disaster degrees, disaster places, the number of trapped persons and the like, and also include deployment information required for disaster relief and reduction, such as the number of collected materials, the number of collected emergency vehicles, emergency traffic lines, emergency evacuation lines and the like.
Managing a plan: the content of the prepared plan is different according to different regions and different types of disaster conditions, so that the plan needs to be classified and managed in batches, levels, types, regions and the like. In addition, the backup and deletion management of the plans are also carried out, the backup management is needed for some important plans, and the deletion operation can be carried out for some long-term useless and wrong plans.
The conventional architecture design has a B/S architecture in addition to a C/S architecture, and the comparison between the advantages and the disadvantages of the two architectures is shown in the following table:
C/S and B/S architecture quality contrast
Aiming at the situation, the invention adopts B/S architecture design to realize collaborative plotting work by combining convenience, expandability and cross-platform performance of WebGIS, and the collaborative plotting of WebGIS can participate in conference and negotiation anytime and anywhere, thereby effectively saving precious rescue time and providing good scheme support for emergency negotiation.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the terms first, second, third and the like are for convenience only and do not denote any order. These words are to be understood as part of the name of the component.
Furthermore, it should be noted that in the description of the present specification, the description of the term "one embodiment", "some embodiments", "examples", "specific examples" or "some examples", etc., means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the claims should be construed to include preferred embodiments and all changes and modifications that fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention should also include such modifications and variations.
Claims (10)
1. A WebGIS-based B/S architecture multi-expert online negotiation plotting system is characterized by comprising: the system comprises a server and a plurality of clients in communication connection with the server;
the server comprises: the system comprises a user function module, a GIS function module, a plotting symbol library module, a negotiation plotting function module and a scheme management function module;
the user function module is used for controlling the client side to enable a user login interface to be displayed in a visual interface of the client side;
the user function module is also used for receiving verification information input by a user in a visual interface of a client display user login interface, and performing user registration, user login, user addition or user deletion according to the verification information.
2. The system of claim 1,
the GIS function module is used for controlling the client to display a preset map in a visual interface of the client;
the preset map consists of a work base map and a work mark drawing layer;
the work base map is an OpenStreetMap map;
the work base map includes: vector diagrams, remote sensing diagrams and traffic base diagrams;
the job ticket drawing layer is a WFS and WMS service chart issued by GeoServer;
the GIS function module is also used for receiving an operation instruction of a user on a map in a visual interface of a client for displaying a preset map, and translating, rotating, amplifying and reducing the map in the visual interface of the client according to the operation instruction;
the GIS function module is also used for receiving a selection instruction in a preset work base map in a visual interface of a client for displaying the preset map by a user, and displaying the corresponding work base map in the visual interface of the client according to the selection instruction.
3. The system of claim 2,
the plotting symbol library module is used for controlling the client side to enable a static plotting interface or a dynamic plotting interface or a plotting style modifying interface to be displayed in a visual interface of the client side;
the plotting symbol library module is also used for receiving a management instruction of a user for static plotting in a visual interface of a static plotting interface displayed by a client, and performing corresponding operation according to the management instruction;
the management instruction comprises: the method comprises the following steps of symbol adding, symbol storing, symbol editing and symbol deleting operation instructions;
the static plot includes a disaster type plot, an emergency rating plot, and an emergency type plot;
disaster type plots include fire plots, traffic accident plots, geological disaster plots, building collapse plots, flood disaster plots, landslide plots, and seismic disaster plots;
the emergency grade plotting comprises an emergency grade I plotting, an emergency grade II plotting, an emergency grade III plotting and an emergency grade IV plotting;
the emergency type plotting comprises an emergency power supply plotting, an emergency water supply plotting, an emergency parking plotting, an emergency communication plotting, an emergency maintenance plotting, an emergency material plotting, an emergency hospital plotting, an emergency refuge plotting, an emergency fire fighting plotting, an emergency vehicle plotting and an emergency resource plotting;
the plotting symbol library module is also used for receiving a management instruction of a user for dynamic plotting in a visual interface of a dynamic plotting interface displayed by a client, and carrying out corresponding operation according to the management instruction;
the dynamic plot includes an arrow plot, a line plot, and a planar plot;
arrow plots include single arrow plots, double arrow plots, squad plots, clinch plots;
line plotting includes curve plotting, polyline plotting, free line plotting, and flood line plotting;
area plotting includes free-surface plotting, plot of aggregate, sector plotting, circle plotting, rectangle plotting, and closed-surface plotting;
the plotting symbol library module is also used for receiving a command for modifying the plotting style in a visual interface of a plotting style modification interface displayed by a client by a user, modifying the plotting according to the modification command and acquiring a corresponding modification result.
4. The system of claim 3,
the negotiation plotting functional module comprises a conference functional unit, a communication functional unit and a collaborative editing and concurrency control unit;
the conference function unit is used for controlling the client side, and enabling a plotting group interface to be displayed and created, added into and quit from in a visual interface of the client side;
the conference function unit is also used for receiving a creation instruction in a visual interface which is displayed by a user at a client and used for creating a plotting group interface, and acquiring the plotting group according to the creation instruction;
map content in the visual interfaces of the clients within the plotting group is consistent;
the conference function unit is also used for receiving a conference entering instruction in a visual interface which is displayed by a user at a client and is added into a plotting group interface, and entering the plotting group according to the conference entering instruction;
the conference function unit is also used for receiving a conference quitting instruction in a visual interface of a plotting group quitting interface displayed by a client, and quitting the plotting group according to the conference quitting instruction.
5. The system of claim 4,
the communication function unit is used for receiving a plotting message input by any client in the plotting group and pushing the plotting message to other clients in the plotting group.
6. The system of claim 5,
the communication function unit is used for acquiring a plotting message input by a user at any client in the plotting group, packaging the plotting message to acquire packaged information, and transmitting the received packaged information to other clients in the plotting group;
and other clients in the plotting group obtain plotting results corresponding to the packaged information on a work map according to the packaged information.
7. The system of claim 6,
performing plotting message packaging on the plotting message to acquire packaged information, specifically comprising:
constructing an XML document, and adopting the plotting message to operate as XML of a root node;
adding operation type XML child nodes, element modification operation type XML child nodes, element deleting operation plotting operation and dividing into element type XML child nodes, element adding operation type XML child nodes, element deleting operation type XML child nodes and object locking operation type XML child nodes;
the elements and the elements have three forms of point, line and plane;
compressing the elements or the elements into a character string form, adding the character string form into an XML child node, and adding preset basic information, graphic attributes, graphic definitions, graphic geometric form attributes and element layer information into the XML child node.
8. The system of claim 7,
other clients in the plotting group obtain plotting results corresponding to the packaged information on a work map according to the packaged information, and the plotting results specifically include: and other clients in the plotting group obtain plotting results of the added elements or the elements, the deleted elements or the elements and the modified elements or the plotting results of the elements on the work map according to the packaged information.
9. The system of claim 8,
the collaborative editing and concurrency control unit is used for locking the selected elements when a user edits the elements at any client in the plotting group to acquire locking processing results of the elements;
the locking processing result of the element is that other clients in the plotting group do not have the authority to edit the element;
the collaborative editing and concurrency control unit is used for unlocking the selected elements when a user finishes editing on the elements at any client in the plotting group to acquire unlocking processing results of the elements;
and the unlocking processing result of the element is that other clients in the plotting group have the authority to edit the element.
10. The system of claim 9,
the scheme management function module is used for acquiring historical emergency plan information matched with the pre-acquired disaster specific information from a pre-set plan library according to the pre-acquired disaster specific information;
the historical emergency plan information comprises information of a processing method of historical emergency disasters;
the scheme management function module is also used for storing, backing up or deleting the established pre-scheme according to the preset rule.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115904575A (en) * | 2022-10-27 | 2023-04-04 | 中科星图数字地球合肥有限公司 | Multi-terminal plotting method, device, equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170329565A1 (en) * | 2015-02-05 | 2017-11-16 | Tencent Technology (Shenzhen) Company Limited | Information processing method, client, server, and computer-readable storage medium |
| CN111177292A (en) * | 2019-12-23 | 2020-05-19 | 中科全维科技(苏州)有限公司 | WebGIS collaborative plotting method and system for emergency incident |
-
2020
- 2020-12-29 CN CN202011595143.3A patent/CN112698774A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170329565A1 (en) * | 2015-02-05 | 2017-11-16 | Tencent Technology (Shenzhen) Company Limited | Information processing method, client, server, and computer-readable storage medium |
| CN111177292A (en) * | 2019-12-23 | 2020-05-19 | 中科全维科技(苏州)有限公司 | WebGIS collaborative plotting method and system for emergency incident |
Non-Patent Citations (3)
| Title |
|---|
| 何帅帅: "协同减灾系统中要素编辑并发控制策略", 《测绘与空间地理信息》 * |
| 邹峥嵘: "多专家协同标绘系统数据更新模式设计", 《地理与地理信息科学》 * |
| 顾小玲: "地图动态协同标绘技术及其在大气污染事故应急中的应用", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115904575A (en) * | 2022-10-27 | 2023-04-04 | 中科星图数字地球合肥有限公司 | Multi-terminal plotting method, device, equipment and storage medium |
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