CN201813411U - WebGIS (Web Geographic Information System) in mixed modes of vector mode and grid mode - Google Patents
WebGIS (Web Geographic Information System) in mixed modes of vector mode and grid mode Download PDFInfo
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- CN201813411U CN201813411U CN2010205584001U CN201020558400U CN201813411U CN 201813411 U CN201813411 U CN 201813411U CN 2010205584001 U CN2010205584001 U CN 2010205584001U CN 201020558400 U CN201020558400 U CN 201020558400U CN 201813411 U CN201813411 U CN 201813411U
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Abstract
The utility model relates to a WebGIS (Web Geographic Information System) in mixed modes of a vector mode and a grid mode, comprising a client, a Web server and an application server as well as a GIS (Geographic Information System) server, a data server and an EJB (Enterprise JavaBean) server. The client is connected with the Web server through the Internet, the Web server is arranged on the application server which is connected with the GIS server, and the GIS server is respectively connected with the data server and the EJB server. Compared with the prior art, the utility model has the advantages that the client capability of processing vector data is ensured, the data transmission quantity is controlled to the minimum, and the like.
Description
Technical field
The utility model relates to a kind of WebGIS system, especially relates to a kind of arrow pattern and raster mode and mixes the WebGIS system that uses.
Background technology
The system structure of GIS has experienced following four-stage: single cpu mode, hubbed mode, client/server (C/s) pattern and browser/server (B/s) pattern.Traditional GIS mainly adopts first three kind pattern, and wherein C/S model is the highest form of its development.C/S model has made full use of the resource of client computer, and all calculating are all carried out in client computer, and client-server is kept stable connection, and server centered is used for access data.This is obvious for distributed enterprise-level GIS application limit: a large amount of public users can't be kept stable being connected with server, also do not have enough bandwidth successfully to duplicate and transmit data; In addition, it also need install special GIS software separately in client.
Current WebGIS based on Internet mainly adopts browser/server (B/S) pattern.Different according to browser end and server end information transmitted (and packing manner of information) can further be subdivided into WebGIS thin-client, medium client and three kinds of patterns of Fat Client.Data flow with WebGIS in the OpenGIS standard is summarised as four-stage, this four-stage and three kinds of client modes right
Under the thin-client pattern, server end is an image to the browser end transmission, as GIF, JPEG, PNG, browser end is only finished integration of user interaction functionality, all all are placed on server end to user's request responding and carry out under medium client mode, server end is at first learned processing according to client-requested with carrying out, extract feature set, then feature set is converted to vector graphics (learn attribute information), as simple vector graphics (SVG) form of W3C (worldwide we consor-tium) and the formulation of numerous manufacturer, VRML form, SWF form etc. with having.Server end is the vector graphics of uniform format to browser end transmission, like this in client except handing over request, can also handle as amplifying, dwindle, roam the figures function, alleviated load of server.Under the Fat Client pattern, server only carries out data filter, then result set is fed back to client, and the family end can carry out GIS and analyze.OpenGIS advocates result set and adopts GML (geographicmarkup language) form in transmission over networks.
Raster mode the processing capacity of client too a little less than, frequent with server interaction, but data quantity transmitted is less relatively; Arrow pattern is stronger at client functionality, and is few with the server interaction number of times, but a data quantity transmitted is bigger.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of arrow pattern and raster mode to mix the WebGIS system that uses for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of arrow pattern and raster mode mix the WebGIS system that uses, comprise client, Web server, application server, it is characterized in that, also comprise the GIS server, data server, the EJB server, described client is connected with Web server by Internet, described Web server is located on the application server, described application server is connected with the GIS server, described GIS server respectively with data server, the EJB server connects, described GIS server is categorized into background data and thematic data to map datum, described GIS sends to Web server with sorted background data and thematic data, described Web server is transferred to client with thematic data by approach vector, and described Web server downloads in the client after background data is generated image earlier again.
Be provided with EJB Container (Enterprise Java Bean container) in the described GIS server, be provided with EJB Component (EJB assembly) among this EJB Container.
Described data server is provided with file server interface, relational database server interface, other database server connectors.
Described client is provided with browser, GIS processor.
Compared with prior art, the utlity model has geodata is divided into two classes: background data and thematic data, be used for participating in figure layer that GIS analyzes computing as thematic data, adopt the approach vector transmission; Other lot of background data generate image at server earlier, download to client again, have so both guaranteed the ability of client process vector data, will count transmission quantity again and control to minimum.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model embodiment 2.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
In order to contend with Microsoft, Sun Microsystems has issued the EJB standard, and is subjected to the support of large quantities of companies such as IBM, Oracle, BEA and tissue.Follow the EJB standard and make the Application developer needn't understand the rudimentary API of details, multithreading, resource-sharing and other complexity of the affairs of low level and condition managing, thereby be absorbed in the exploitation of service logic, easily make up distributed application program.Fall the model of B owing to adopted pure Java technology based on J2EE, thus it than COM+ model more attractive a bit be its professional platform independence, promptly " once write, everywhere operation ".But should see that also because Java adopts virtual machine mechanism, when realizing same GIS function, the efficient of JavaBean is less than the C0M+ object.
Based on the implementation framework of the WebGIS of J2EE/EJB as shown in Figure 1, comprise client 1, Web server 2, application server 3, GIS server 4, data server 6, EJB server 5, described client 1 is connected with Web server 2 by Internet, described Web server 2 is located on the application server 3, described application server 3 is connected with GIS server 4, described GIS server 4 respectively with data server 6, EJB server 5 connects, described GIS server 4 is categorized into background data and thematic data to map datum, described GIS sends to Web server 2 with sorted background data and thematic data, be used for participating in GIS and analyze the figure layer of computing as thematic data, described Web server 2 is transferred to client 1 with thematic data by approach vector, and described Web server 2 downloads in the client 1 after background data is generated image earlier again.Be provided with EJB Container in the described GIS server 4, be provided with EJB Component among this EJB Container.Described data server 6 is provided with file server interface, relational database server interface, other database server connectors, described file server interface is connected with file server 7, described relational database server interface is connected with relational database server 8, described other database server connectors are connected with other database servers 9, and described client 1 is provided with browser, GIS processor.
As shown in Figure 2, be the logic diagram of functions such as the map issue that realizes certain website, information inquiry, Shortest Path Analysis, buffer zone analysis, thematic map making.
Function and performance test have been carried out in the website, particularly the concurrent user visits test, be requisite link before the issue of enterprise-level WebGIS system. use business software WebPer-formance2.0 that performance test has been carried out in the website, the result shows, because adopted technology such as object pool, instant activation, metadata cache, system supports 400 user concurrent access and 4000 users to continue 10min with every 1s speed once and clicks amplifieroperation.
Claims (4)
1. arrow pattern and raster mode mix the WebGIS system that uses, comprise client, Web server, application server, it is characterized in that, also comprise GIS server, data server, EJB server, described client is connected with Web server by Internet, described Web server is located on the application server, and described application server is connected with the GIS server, and described GIS server is connected with data server, EJB server respectively.
2. a kind of arrow pattern according to claim 1 and raster mode mix the WebGIS system that uses, and it is characterized in that, are provided with EJB Container in the described GIS server, are provided with EJBComponent among this EJB Container.
3. a kind of arrow pattern according to claim 1 and raster mode mix the WebGIS system that uses, and it is characterized in that described data server is provided with file server interface, relational database server interface, other database server connectors.
4. a kind of arrow pattern according to claim 1 and raster mode mix the WebGIS system that uses, and it is characterized in that described client is provided with browser, GIS processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205584001U CN201813411U (en) | 2010-10-12 | 2010-10-12 | WebGIS (Web Geographic Information System) in mixed modes of vector mode and grid mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205584001U CN201813411U (en) | 2010-10-12 | 2010-10-12 | WebGIS (Web Geographic Information System) in mixed modes of vector mode and grid mode |
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| CN201813411U true CN201813411U (en) | 2011-04-27 |
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| CN2010205584001U Expired - Fee Related CN201813411U (en) | 2010-10-12 | 2010-10-12 | WebGIS (Web Geographic Information System) in mixed modes of vector mode and grid mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368259A (en) * | 2011-10-10 | 2012-03-07 | 北京百度网讯科技有限公司 | Electronic map data storage and query method, device and system |
| CN102508763A (en) * | 2011-10-11 | 2012-06-20 | 工业和信息化部计算机与微电子发展研究中心（中国软件评测中心） | Performance test system of GIS (Geographic Information System) platform |
| CN103078958A (en) * | 2013-02-05 | 2013-05-01 | 北京四方继保自动化股份有限公司 | Real-time monitoring supervising method for WEB mode of power SCADA (Supervisory Control And Data Acquisition) on basis of combining SVG (Scalable Vector Graphics) with RIA (Rich Internet Application) |
| CN103279526A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院国家天文台 | WebGIS three-dimensional lunar system based on ActiveX and realizing method of WebGIS three-dimensional lunar system |
| CN104063406A (en) * | 2013-03-18 | 2014-09-24 | 杜庆峰 | Temporality-based large-scale SVG (scalable vector graphics) format GIS (geographic information system) data quick compare technology |
-
2010
- 2010-10-12 CN CN2010205584001U patent/CN201813411U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368259A (en) * | 2011-10-10 | 2012-03-07 | 北京百度网讯科技有限公司 | Electronic map data storage and query method, device and system |
| CN102508763A (en) * | 2011-10-11 | 2012-06-20 | 工业和信息化部计算机与微电子发展研究中心（中国软件评测中心） | Performance test system of GIS (Geographic Information System) platform |
| CN103078958A (en) * | 2013-02-05 | 2013-05-01 | 北京四方继保自动化股份有限公司 | Real-time monitoring supervising method for WEB mode of power SCADA (Supervisory Control And Data Acquisition) on basis of combining SVG (Scalable Vector Graphics) with RIA (Rich Internet Application) |
| CN103078958B (en) * | 2013-02-05 | 2015-07-22 | 北京四方继保自动化股份有限公司 | Real-time monitoring supervising method for WEB mode of power SCADA (Supervisory Control And Data Acquisition) on basis of combining SVG (Scalable Vector Graphics) with RIA (Rich Internet Application) |
| CN104063406A (en) * | 2013-03-18 | 2014-09-24 | 杜庆峰 | Temporality-based large-scale SVG (scalable vector graphics) format GIS (geographic information system) data quick compare technology |
| CN104063406B (en) * | 2013-03-18 | 2017-10-27 | 同济大学 | SVG form GIS data rapid comparison methods based on tense |
| CN103279526A (en) * | 2013-05-30 | 2013-09-04 | 中国科学院国家天文台 | WebGIS three-dimensional lunar system based on ActiveX and realizing method of WebGIS three-dimensional lunar system |
| CN103279526B (en) * | 2013-05-30 | 2016-08-24 | 中国科学院国家天文台 | A kind of WebGIS three-dimensional moon system based on ActiveX and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20131012 |