CN101968812A - Method and device for automatically generating cartogram by calling database data - Google Patents

Method and device for automatically generating cartogram by calling database data Download PDF

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Publication number
CN101968812A
CN101968812A CN 201010523629 CN201010523629A CN101968812A CN 101968812 A CN101968812 A CN 101968812A CN 201010523629 CN201010523629 CN 201010523629 CN 201010523629 A CN201010523629 A CN 201010523629A CN 101968812 A CN101968812 A CN 101968812A
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chart
solicited message
data
control layer
request
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高万林
张树亮
臧金玉
卢帅州
赵佳宁
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China Agricultural University
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China Agricultural University
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Abstract

The invention discloses a method and a device for automatically generating a cartogram by calling database data. The method comprises the steps of: receiving a request of displaying specific contents by a logic control layer, wherein the request is sent from a JSP page; processing the request, returning a processing result to the JSP interface; determining chart request information according to the returned processing result of the JSP page and sending the chart request information to the logic control layer; inquiring in a database by the logic control layer according to the chart request information and transmitting the packaged query result to a Jfreechart; and automatically generating a statistical chart by the Jfreechart according to the received packaged query result. According to the invention, the prior art is integrated, developed and utilized for storing, processing and packaging a large quantity of data, thus batch processing of the charts can be realized.

Description

Call the method and apparatus that database data generates statistical graph automatically
Technical field
The present invention relates to the processing data information technical field, relate in particular to a kind of method and apparatus that database data generates statistical graph automatically that calls.
Background technology
JfreeChart is a Java project on certain open source code website at present, it also is the free graphics package that certain website provides, utilize it can be with generating various charts, these charts mainly comprise: column diagram, broken line graph, pie chart, area-graph, distribution plan, combination chart and some meter diagrams or the like.These not in specie chart can satisfy present various statistical graph requirements basically.Use JfreeChart can also directly generate the picture of various forms such as PNG, JPG.
The JSP technology uses the JAVA programming language to write tags and the scriptlets of class XML, encapsulates the processing logic that produces dynamic web page.Webpage can also be present in the applied logic of the resource of service end by tags and scriptlets visit.JSP supports reusable design based on assembly with webpage logical and webpage design and display separation, exploitation based on the application program of Web is become rapidly and easily.
Hibernate is the Object Relation Mapping framework of an open source code, and it has carried out the very object encapsulation of lightweight to JDBC, makes java applet person arbitrary use object programming thinking to come the manipulation data storehouse.Hibernate can be applied in the occasion of any use JDBC, both can use at the client-side program of Java, use in also can using at the Web of Servlet/JSP, tool revolution meaning be, Hibernate can replace CMP in the J2EE framework of using EJB, finish the important task of data persistence.
In summary, above several technology all be independent technology, wherein JfreeChart can't oneself deposit, handle, the encapsulation mass data comes to generate in batches chart.Do not have special technology that these several technology are carried out the integration and development utilization, be used for deposit, handle, encapsulate the next chart that generates in batches of mass data.
Summary of the invention
The object of the present invention is to provide a kind of method and apparatus that database data generates statistical graph automatically that calls.Based on the present invention, can carry out integration and development and utilization to prior art, to realize the automatic generation of chart.
The present invention is a kind of to call the method that database data generates statistical graph automatically, comprises the steps: request step, and the logic control layer receives the request that send, that will show particular content of the JSP page; Described request is handled, result is returned the described JSP page; Chart solicited message determining step is determined the chart solicited message according to the result of returning the JSP page, and this chart solicited message is sent to the logic control layer; Query steps, described logic control layer is inquired about in database according to described chart solicited message, and with after the Query Result encapsulation, passes to jfreechart; Statistical graph generates step automatically, and described Jfreechart generates statistical graph automatically according to Query Result that receive, after the encapsulation.
The method of above-mentioned automatic generation statistical graph in the preferred described request step, describedly is treated to described request:
The method of above-mentioned automatic generation statistical graph, preferred described logic control layer processes said request carried out data manipulation by Hibernate, finishes mutual with database; And pass to the described JSP page after the data encapsulation that Hibernate is returned.
The method of above-mentioned automatic generation statistical graph, in the preferred described chart solicited message determining step, described basis is returned the result of the JSP page and is determined before the chart solicited message, comprises that also the JSP page shows the step of the data that Hibernate returns.
The method of above-mentioned automatic generation statistical graph, in the preferred described query steps, the described inquiry in database according to described chart solicited message is specially: described logic control layer is handled the described chart solicited message that receives, and utilizes Hibernate to inquire about from database and obtains and the corresponding data message of described chart solicited message.
The method of above-mentioned automatic generation statistical graph in the preferred described product news step, describedly is encapsulated as Query Result: the data message of described chart solicited message correspondence is packaged into the information data type that jfreechart needs.
The present invention is a kind of to call the device that database data generates statistical graph automatically, comprising: request module, chart solicited message determination module, enquiry module and statistical graph automatically-generating module.Wherein, request module is used for the request that send, that will show particular content of the logic control layer reception JSP page; Described request is handled, result is returned the described JSP page; Chart solicited message determination module is used for determining the chart solicited message according to the result of returning the JSP page, and this chart solicited message is sent to the logic control layer; Enquiry module is used for described logic control layer to be inquired about at database according to described chart solicited message, and with after the Query Result encapsulation, passes to jfreechart; The statistical graph automatically-generating module is used for described Jfreechart according to Query Result that receive, after the encapsulation, generates statistical graph automatically.
The device of above-mentioned automatic generation statistical graph in the preferred described request module, describedly is treated to described request: described logic control layer processes said request, carry out data manipulation by Hibernate, and finish mutual with database; And pass to the described JSP page after the data encapsulation that Hibernate is returned.
The device of above-mentioned automatic generation statistical graph, preferred described chart solicited message determination module are also with supplying also to show the data that Hibernate returns in the JSP page.
The device of above-mentioned automatic generation statistical graph, in the preferred described enquiry module, the described inquiry in database according to described chart solicited message is specially: described logic control layer is handled the described chart solicited message that receives, and utilizes Hibernate to inquire about from database and obtains and the corresponding data message of described chart solicited message.
The device of above-mentioned automatic generation statistical graph in the preferred described product news module, describedly is encapsulated as Query Result: the data message of described chart solicited message correspondence is packaged into the information data type that jfreechart needs.
In terms of existing technologies, the present invention integrates, develops and utilize prior art, with deposit, processing, encapsulation mass data, can realize the batch processing of chart.
Description of drawings
Fig. 1 calls the flow chart of steps that database data generates the method for statistical graph automatically for the present invention;
Fig. 2 calls the method embodiment schematic diagram that database data generates statistical graph automatically for the present invention;
Fig. 3 calls the process flow diagram that database data generates the method embodiment of statistical graph automatically for the present invention;
Fig. 4 calls the structural representation that database data generates the device embodiment of statistical graph automatically for the present invention is a kind of.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The main invention thought of invention is logical to be that the user clicks that selection need show and the information data of needs generation chart, the logic control layer is handled various requests then, mutual by Hibernate and database, inquiry obtains the corresponding information data, the information data that inquiry is obtained by the logic control layer is packaged into the information data type that jfreechart needs again, stores after generating chart automatically by jfreechart.
With reference to Fig. 1, Fig. 1 calls the flow chart of steps that database data generates the method for statistical graph automatically for the present invention.Comprise: request step S110, the logic control layer receives the request that send, that will show particular content of the JSP page; Described request is handled, result is returned the described JSP page; Chart solicited message determining step S120 determines the chart solicited message according to the result of returning the JSP page, and this chart solicited message is sent to the logic control layer; Query steps S130, described logic control layer is inquired about in database according to described chart solicited message, and with after the Query Result encapsulation, passes to jfreechart; Statistical graph generates step S140 automatically, and described Jfreechart generates statistical graph automatically according to Query Result that receive, after the encapsulation.
Below by Fig. 2 and concrete embodiment, technical scheme of the present invention is described in further detail.
Clicking the page with the user, to generate certain chart be example:
Fig. 2 calls the schematic flow sheet that database data generates chart automatically for enforcement of the present invention provides, and as shown in Figure 2, the database data that calls of present embodiment generates chart automatically and may further comprise the steps:
Step 001: the user by the page after the content that to need click to select query display, sends to the logic control layer and to want solicited message in the JSP page.With webpage logical and webpage design and display separation, become a web user interface by JSP with the html label configurations.The user enters system demonstration behind the page and goes out data list in the database, the user by click select after, also the page is submitted to the logic control layer with the information that the user selects.
Step 002: the logic control layer is handled after receiving 001 solicited message of sending.When the logic control layer receives the solicited message of sending in 001, analysis request information draws to be called Hibernate after the information that the user need show and carries out data query.
Step 003: carry out data manipulation by Hibernate, finish mutual with database, return and ask the information corresponding data.Hibernate carries out mutual with database in the back of calling that receives the logic control layer by its inner class libraries and method sessionFactory, openSession, beginTransaction, createQuery etc., finish query manipulation, thereby obtain and solicited message information corresponding data.
Step 004: pass to the JSP page after the information data encapsulation that the logic control layer returns Hibernate in 003.When Hibernate in 003 obtain with solicited message information corresponding data after, the logic control layer with these information datas handle be encapsulated into the JSP page can data information displayed, then it is passed to the JSP page.
The step 005:JSP page receives in 004 after the information data of transmitting its demonstration.After the JSP page receives the information data that passes in 004, be shown in the page for the user and check selection with forms such as tabulation, drop-down menu, radio box, multiselect frames.
Step 006: after the user clicked in the JSP page and selects to need to generate the data of chart, the JSP page sent the solicited message that generates chart to the logic control layer.The user clicks the information data of selecting to need to generate chart by browsing the information data that demonstrates in the JSP page, and the information of after the click on submission button user being selected sends to the logic control layer.
Step 007: the logic control layer is handled after receiving and sending solicited message in 006, utilizes Hibernate to inquire about from database to obtain the information data that needs.Send solicited message in 006 through the logic control layer analysis, analyzing needs to generate the chart-information data, calls Hibernate and carries out database manipulation.Hibernate by as 003 in the class libraries and the method for the inside mentioned from database, inquire about the information data that obtains needs.
Step 008: the information data that Hibernate in 007 is returned passes to jfreechart after being packaged into the information data type that jfreechart needs.The logic control layer is treated as the corresponding informance data according to jfreechart needs parameter and data type with it after receiving the data that Hibernate returns.These information datas can be provided with the various attributes of chart, such as layout type of font and picture size and color, chart etc.Inner class libraries of Jfreechart and method have JFreeChart, XXXDateset, XXXPlod, XXXAxis, XXXRenderer, XXXURLGenerator, XXXToolTipGenerator etc.
Step 009:jfreechart generates chart automatically with the information data of transmitting in 008 and is stored in user's designated directory.The logic control layer calls the Jfreechart internalist methodology, the data of transmitting in 008 is composed to these methods generated chart automatically, and the subtype of generation comprises column diagram, broken line graph, pie chart, area-graph, distribution plan, combination chart and some meter diagrams or the like.The method of wherein using has ChartFactory, createBarChart, createLineChart, createPieChart, BarRenderer, CategoryPlot, CategoryAxis, CategoryAxis, PiePlot, DefaultPieDataset, DefaultDrawingSupplier, createDataset, LineChartDemo5 etc.
Data derive the flow process that generates statistical graph: as Fig. 3, the JSP page sends the request that will show particular content to the logic control layer; The logic control layer is handled request; Carry out data manipulation by Hibernate, finish mutual with database; The data encapsulation that Hibernate is returned passes to the JSP page afterwards; The JSP page receives after the data of transmission its demonstration; After the user selected to generate chart data, the JSP page sent to the logic control layer and generates the chart solicited message; The logic control layer is handled and is received solicited message, utilizes Hibernate to inquire about from database and obtains the data message corresponding with solicited message; The information data that Hibernate is returned passes to jfreechart after being packaged into the information data type that jfreechart needs; Jfreechart generates chart and storage after receiving the information data that passes in 008 automatically.
With reference to Fig. 4, Fig. 4 calls the structural representation that database data generates the device embodiment of statistical graph automatically for the present invention is a kind of.Comprise: first request module 40, first package module 41, display module 42, second request module 43, enquiry module 44, second package module 45 and icon generate and memory module 46.Wherein:
First request module 40 is used for the JSP page and sends the request that will show particular content to the logic control layer; First package module, 41 described logic control layer processes said request are carried out data manipulation by Hibernate, finish mutual with database; And pass to the described JSP page after the data encapsulation that Hibernate is returned; After display module 42 is used for the described JSP page and receives described data encapsulation, video data; Second request module 43 is used for the user after data presented is selected chart data, sends to the logic control layer by the described JSP page and generates the chart solicited message; Enquiry module 44 is used for described logic control layer and handles the described chart solicited message that receives, and utilizes Hibernate to inquire about from database and obtains and the corresponding data message of described chart solicited message; After second package module 45 is used for data message with described chart solicited message correspondence and is packaged into the information data type of jfreechart needs, pass to jfreechart; Icon generates and memory module 46 is used for Jfreechart according to the data message that receives, and generates chart and storage automatically.
In sum, the present invention has following characteristics:
The first, utilize method provided by the invention information to display to be presented in the JSP page by demand.Information is shown to the JSP page asks to realize by logic control layer processing page transmission user, mutual by Hibernate and database, inquiry needing to obtain display message; After treatment it is shown in the JSP page.
The second, the user selects to generate the information data of chart, and the generation figure table button of clicking in the page can be stored in the local disk of user's appointment according to the information data generation chart that the user selects.Generating chart according to data is to handle the request that the JSP page transmits by the logic control layer; Mutual by Hibernate and database, inquiry obtains needing corresponding information data; It is encapsulated into passes to jfreechart after the data type that jfreechart needs and become chart and store.
Need to prove that here the principle of device embodiment is identical with method embodiment, relevant part does not repeat them here mutually with reference to getting final product.
More than a kind ofly call the method and apparatus that database data generates statistical graph automatically and describe in detail provided by the present invention, used specific embodiment herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part in specific embodiments and applications all can change.In sum, this description should not be construed as limitation of the present invention.

Claims (10)

1. one kind is called the method that database data generates statistical graph automatically, it is characterized in that, comprises the steps:
Request step, the logic control layer receives the request that send, that will show particular content of the JSP page; Described request is handled, result is returned the described JSP page;
Chart solicited message determining step is determined the chart solicited message according to the result of returning the JSP page, and this chart solicited message is sent to the logic control layer;
Query steps, described logic control layer is inquired about in database according to described chart solicited message, and with after the Query Result encapsulation, passes to jfreechart;
Statistical graph generates step automatically, and described Jfreechart generates statistical graph automatically according to Query Result that receive, after the encapsulation.
2. the method for automatic generation statistical graph according to claim 1 is characterized in that, in the described request step, described described request is treated to:
Described logic control layer processes said request carried out data manipulation by Hibernate, finishes mutual with database; And pass to the described JSP page after the data encapsulation that Hibernate is returned.
3. the method for automatic generation statistical graph according to claim 2 is characterized in that,
In the described chart solicited message determining step, described basis is returned the result of the JSP page and is determined before the chart solicited message, comprises that also the JSP page shows the step of the data that Hibernate returns.
4. the method for automatic generation statistical graph according to claim 3 is characterized in that,
In the described query steps, the described inquiry in database according to described chart solicited message is specially:
Described logic control layer is handled the described chart solicited message that receives, and utilizes Hibernate to inquire about from database and obtains and the corresponding data message of described chart solicited message.
5. the method for automatic generation statistical graph according to claim 4 is characterized in that, in the described product news step, described Query Result is encapsulated as:
The data message of described chart solicited message correspondence is packaged into the information data type that jfreechart needs.
6. one kind is called the device that database data generates statistical graph automatically, it is characterized in that, comprising:
Request module is used for the logic control layer and receives the request that send, that will show particular content of the JSP page; Described request is handled, result is returned the described JSP page;
Chart solicited message determination module is used for determining the chart solicited message according to the result of returning the JSP page, and this chart solicited message is sent to the logic control layer;
Enquiry module is used for described logic control layer and inquires about at database according to described chart solicited message, and with after the Query Result encapsulation, passes to jfreechart;
The statistical graph automatically-generating module is used for described Jfreechart according to Query Result that receive, after the encapsulation, generates statistical graph automatically.
7. the device of automatic generation statistical graph according to claim 6 is characterized in that, in the described request module, described described request is treated to:
Described logic control layer processes said request carried out data manipulation by Hibernate, finishes mutual with database; And pass to the described JSP page after the data encapsulation that Hibernate is returned.
8. the device of automatic generation statistical graph according to claim 7 is characterized in that,
Described chart solicited message determination module is also with supplying also to show the data that Hibernate returns in the JSP page.
9. the device of automatic generation statistical graph according to claim 8 is characterized in that,
In the described enquiry module, the described inquiry in database according to described chart solicited message is specially: described logic control layer is handled the described chart solicited message that receives, and utilizes Hibernate to inquire about from database and obtains and the corresponding data message of described chart solicited message.
10. the device of automatic generation statistical graph according to claim 9 is characterized in that, in the described product news module, described Query Result is encapsulated as:
The data message of described chart solicited message correspondence is packaged into the information data type that jfreechart needs.
CN 201010523629 2010-10-25 2010-10-25 Method and device for automatically generating cartogram by calling database data Pending CN101968812A (en)

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CN103700027A (en) * 2013-12-11 2014-04-02 国家电网公司 Method for achieving multi-dimensional bidirectional free-matching visual display of electric power data and graphics
CN104484369A (en) * 2014-12-05 2015-04-01 中国航空工业集团公司第六三一研究所 Method for processing data images of engines on basis of JFreeChart
CN106372190A (en) * 2016-08-31 2017-02-01 华北电力大学(保定) Method and device for querying OLAP (on-line analytical processing) in real time
CN106599013A (en) * 2016-08-31 2017-04-26 重庆车杰盟科技有限公司 Workflow of chart data service management system
CN107085602A (en) * 2017-03-31 2017-08-22 北京知聚科技有限公司 The generation method and computer-readable storage medium of statistical chart
CN107423310A (en) * 2016-06-15 2017-12-01 宁波广播电视集团 The display methods and device of statistics in a kind of broadcast platform
CN112015787A (en) * 2020-08-28 2020-12-01 支付宝(杭州)信息技术有限公司 Data query method and device

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700027A (en) * 2013-12-11 2014-04-02 国家电网公司 Method for achieving multi-dimensional bidirectional free-matching visual display of electric power data and graphics
CN103700027B (en) * 2013-12-11 2018-11-06 国家电网公司 A kind of implementation method that the two-way Self Matching of electric power data figure multidimensional visualizes
CN104484369A (en) * 2014-12-05 2015-04-01 中国航空工业集团公司第六三一研究所 Method for processing data images of engines on basis of JFreeChart
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CN106372190A (en) * 2016-08-31 2017-02-01 华北电力大学(保定) Method and device for querying OLAP (on-line analytical processing) in real time
CN106599013A (en) * 2016-08-31 2017-04-26 重庆车杰盟科技有限公司 Workflow of chart data service management system
CN107085602A (en) * 2017-03-31 2017-08-22 北京知聚科技有限公司 The generation method and computer-readable storage medium of statistical chart
CN107085602B (en) * 2017-03-31 2021-01-22 北京知聚科技有限公司 Statistical graph generation method and computer storage medium
CN112015787A (en) * 2020-08-28 2020-12-01 支付宝(杭州)信息技术有限公司 Data query method and device

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Application publication date: 20110209