Jfreechart encapsulation Tool

Package COM. wasu. ITV. common. util; import Java. AWT. basicstroke; import Java. AWT. color; import Java. AWT. font; import Java. io. file; import Java. io. fileoutputstream; import Java. io. ioexception; import Java. SQL. timestamp; import Java. text. decimalformat; import Java. text. numberformat; import Java. text. simpledateformat; import Java. util. iterator; import Java. util. list; import javax. servlet. HTTP. httpservletrequest; import Org. codehaus. xfire. addressing. randomguid; import Org. jfree. chart. chartfactory; import Org. jfree. chart. chartutilities; import Org. jfree. chart. jfreechart; import Org. jfree. chart. axis. categoryaxis; import Org. jfree. chart. labels. standardcategoryitemlabelgenerator; import Org. jfree. chart. labels. standardpiesectionlabelgenerator; import Org. jfree. chart. labels. standardpietooltipgenerator; import Org. jfree. chart. plot. categoryplot; import Org. jfree. chart. plot. pieplot; import Org. jfree. chart. plot. plotorientation; import Org. jfree. chart. renderer. category. barrenderer; import Org. jfree. chart. title. legendtitle; import Org. jfree. chart. title. texttitle; import Org. jfree. data. category. categorydataset; import Org. jfree. data. category. defaultcategorydataset; import Org. jfree. data. general. defaultpiedataset; import Org. jfree. util. rotation; public class jfreechartutils {/*** step2: Create a piechart chart ** @ Param dataset * @ return */Private Static jfreechart createpiechart (defaultpiedataset dataset, String title, Boolean is3d) {jfreechart chart = NULL; If (is3d) {chart = chartfactory. createpiechart3d (title, // chart title dataset, // dataset true, // whether to display the legend true, // whether to display the tool prompt true // whether to generate a URL );} else {chart = chartfactory. createpiechart (title, // chart title dataset, // dataset true, // whether to display the legend true, // whether to display the tool prompt true // whether to generate a URL );} // set the title Font = to prevent Chinese garbled characters: You must set the font chart. settitle (New texttitle (title, new font ("", Font. italic, 22); // set the font of the legend = to prevent Chinese garbled characters: You must set the font chart. getlegend (). setitemfont (new font ("", Font. bold, 12); // obtain the plot object of the pie chart (actual chart) pieplot plot = (pieplot) chart. getplot (); // graphic border color plot. setbasesectionoutlinepaint (color. gray); // graphic Border width (PLOT. setbasesectionoutlinestroke (New basicstroke (0.0f); // you can set the orientation of the pie chart, which can be drawn clockwise or counterclockwise. setdirection (rotation. anticlockwise); // set the drawing angle (image rotation angle) plot. setstartangle (70); // set the highlighted data block // plot. setexplodepercent ("one", 0.1d); // sets the background color transparency. setbackgroundalpha (0.7f); // sets the foreground transparency. setforegroundalpha (0.65f); // set the font of the block label ==to prevent Chinese garbled characters: The font plot must be set. setlabelfont (new font ("", Font. plain, 12); // slice separation display, not effective for 3D images if (is3d) plot. setexplodepercent (Dataset. getkey (3), 0.1d); // legend display percentage: Custom mode. {0} indicates the option, {1} indicates the value, and {2} indicates the proportion, two plot digits after the decimal point. setlabelgenerator (New standardpiesectionlabelgenerator ("{0 }:{ 1} \ r \ n ({2})", numberformat. getnumberinstance (), new decimalformat ("0.00%"); // The percentage displayed in the legend // plot. setlegendlabelgenerator (new // standardpiesectionlabelgenerator ("{0 }={ 1} ({2})"); // specify the pie chart to show as circle (true) or an elliptical (false) plot. setcircular (true); // The content displayed when no data exists. setnodatamessage ("available data not found... "); // set the cursor hover prompt to plot. settooltipgenerator (New standardpietooltipgenerator (); // set the hotspot link // plot. seturlgenerator (New standardpieurlgenerator ("detail. JSP "); Return chart;} Private Static jfreechart createbarchart (categorydataset dataset, String title, string X, string y, Boolean is3d) {jfreechart chart = NULL; If (is3d) {chart = chartfactory. createbarchart3d (// 3D bar chart // jfreechart chart = chartfactory. createlinechart3d (// 3D line chart title, // The Title X of the chart, // The label y for displaying the directory axis, // The label dataset for displaying the value axis, // The dataset plotorientation. vertical, // chart mode: V vertical; H horizontal true, // whether to display the legend false, // whether to display the tool prompt false // whether to generate a URL );} else {chart = chartfactory. createbarchart (// bar chart // jfreechart chart = chartfactory. createlinechart3d (// 3D line chart title, // The Title X of the chart, // The label y for displaying the directory axis, // The label dataset for displaying the value axis, // The dataset plotorientation. vertical, // chart mode: V vertical; H horizontal true, // whether to display the legend false, // whether to display the tool prompt false // whether to generate a URL );} // ====================== to prevent Chinese garbled characters: You must set the font chart. settitle (New texttitle (title, new font ("", Font. italic, 22); legendtitle legend = chart. getlegend (); // obtain the legend. setitemfont (new font ("", Font. bold, 12); // set the font of the legend to prevent Chinese garbled categoryplot plot = (categoryplot) chart. getplot (); // obtain the plot object of the bar chart (actual chart) // set the background color of the bar chart (note, the system needs to use the 16-Bit mode to view the color encoding when taking the color, which is more accurate) plot. setbackgroundpaint (new color (255,255,204); plot. setforegroundalpha (0.65f); // sets the foreground transparency. // sets the horizontal dotted line to be visible. setrangegridlinesvisible (true); // dotted line color plot. setrangegridlinepaint (color. gray); categoryaxis H = plot. getdomainaxis (); // obtain the X axis H. setmaximumcategorylabelwidthratio (1.0f); // whether the lable on the horizontal axis is completely displayed H. setlabelfont (new font ("", Font. bold, 12); // set the font to prevent Chinese garbled characters. setticklabelfont (new font ("", Font. bold, 12); // axis value // H. setcategorylabelpositions (categorylabelpositions. up_45); // 45 degree skewed plot. getrangeaxis (). setlabelfont (new font ("", Font. bold, 12); // set the font on the Y axis to prevent Chinese garbled characters. // barrenderer Renderer = new barrenderer (); // set the column width // Renderer. setmaximumbarwidth (0.05); // set the column height // Renderer. setminimumbarlength (0.2); // set the bar border color Renderer. setbaseoutlinepaint (color. black); // set the bar border to be visible Renderer. setdrawbaroutline (true); // you can specify the Renderer color for each bar. setseriespaint (0, color. blue); Renderer. setseriespaint (1, color. green); Renderer. setseriespaint (2, color. red); // set the distance between parallel columns in each region to Renderer. setitemmargin (0.05); // display the value of each column and modify the font attribute Renderer. setincludebaseinrange (true); Renderer. setbaseitemlabelgenerator (New standardcategoryitemlabelgenerator (); Renderer. setbaseitemlabelsvisible (true); // sets the bar transparency. setforegroundalpha (1.0f); // Add the Renderer to the bar chart. setrenderer (Renderer); // The content displayed when no data exists. setnodatamessage ("available data not found... "); Return chart ;} /***** @ Param data * @ Param title * @ Param x * @ Param y * @ Param width * @ Param heigth * @ Param Request * @ return */public static string generatebarchart (list <object []> data, string title, string X, string y, int width, int heigth, Boolean is3d, httpservletrequest request) {Boolean returnvalue = false; defaultcategorydataset dataset = new defacategcategorydataset (); for (iterator <object []> iterator = data. iterator (); iterator. hasnext ();) {object [] O = (object []) iterator. next (); dataset. setvalue (long) O [1]). intvalue (), O [0] + ":" + O [1], O [2]. tostring ();} jfreechart chart = createbarchart (dataset, title, X, Y, is3d); randomguid guid = new randomguid (); simpledateformat df = new simpledateformat ("/yyyy/mm/DD/"); string subpath = DF. format (New timestamp (system. currenttimemillis () + guid. valueaftermd5 + ". jpg "; string returnpath ="/images/ITV/chart/"+ subpath; file F = new file (request. getsession (). getservletcontext (). getrealpath ("/") + returnpath); F. getparentfile (). mkdirs (); returnvalue = drawtooutputstream (F. getabsolutepath (), chart, width, heigth); Return returnpath;} public static string generatepiechart (list <object []> data, String title, int width, int heigth, httpservletrequest request, boolean is3d) {Boolean returnvalue = false; defaultpiedataset = new defapipiedataset (); For (iterator <object []> iterator = data. iterator (); iterator. hasnext ();) {object [] O = (object []) iterator. next (); dataset. setvalue (O [0]. tostring (), (long) O [1]). doublevalue ();} jfreechart chart = createpiechart (dataset, title, is3d); randomguid guid = new randomguid (); simpledateformat df = new simpledateformat ("/yyyy/mm/DD/"); string subpath = DF. format (New timestamp (system. currenttimemillis () + guid. valueaftermd5 + ". jpg "; string returnpath ="/images/ITV/chart/"+ subpath; file F = new file (request. getsession (). getservletcontext (). getrealpath ("/") + returnpath); F. getparentfile (). mkdirs (); returnvalue = drawtooutputstream (F. getabsolutepath (), chart, width, heigth); Return returnpath;}/*** Step3: output the chart to the specified disk ** @ Param destpath * @ Param chart */Private Static Boolean drawtooutputstream (string destpath, jfreechart chart, int width, int heigth) {fileoutputstream Fos = NULL; boolean returnvalue = true; try {Fos = new fileoutputstream (destpath); chartutilities. writechartaspng (FOS, // specify the target output stream chart, // chart object width, // width heigth, // high null); // chartrenderinginfo} catch (ioexception E) {e. printstacktrace (); returnvalue = false;} finally {try {FOS. close ();} catch (ioexception e) {e. printstacktrace () ;}} return returnvalue;}/*** @ Param ARGs */public static void main (string [] ARGs) {categorydataset dataset = createbardataset2 (); jfreechart chart = createbarchart (dataset, "111111111111111", "2222222", "2222222", true); drawtooutputstream ("D: \ mybook-pie.png", chart, 640,480 );} private Static defapipiedataset createpiedataset1 () {defaultpiedataset dataset = new defaultpiedataset (); dataset. setvalue ("Java programming language", 10000); dataset. setvalue ("JSP basic and case development details", 20000); dataset. setvalue ("struts basics and case development details", 30000); dataset. setvalue ("proficient in JSF", 40000); Return dataset;} Private Static defaultpiedataset createpiedataset2 () {defapipiedataset dataset = new defaultpiedataset (); dataset. setvalue ("market early", new double (10); dataset. setvalue ("project initiation", new double (15); dataset. setvalue ("scheduler", new double (10); dataset. setvalue ("requirement and design", new double (10); dataset. setvalue ("execution control", new double (35); dataset. setvalue ("", new double (10); dataset. setvalue ("O & M", new double (10); Return dataset;}/*** Step1: create a simple DataSet object ** @ return */Private Static categorydataset createbardataset1 () {defacategcategorydataset dataset = new defaultcategorydataset (); dataset. setvalue (10000, "", "corejava"); dataset. setvalue (20000, "", "javaweb"); dataset. setvalue (30000, "", "Easy to use struts"); dataset. setvalue (40000, "", "proficient in JSF"); Return dataset;}/*** combined DataSet object ** @ return */Private Static categorydataset createbardataset2 () {defacategcategorydataset dataset = new defaultcategorydataset (); dataset. setvalue (5000, "Beijing", "corejava"); dataset. setvalue (3000, "Shanghai", "corejava"); dataset. setvalue (2000, "Guangzhou", "corejava"); dataset. setvalue (10000, "Beijing", "javaweb"); dataset. setvalue (6000, "Shanghai", "javaweb"); dataset. setvalue (4000, "Guangzhou", "javaweb"); dataset. setvalue (15000, "Beijing", "Easy to use struts"); dataset. setvalue (5000, "Shanghai", "Easy to use struts"); dataset. setvalue (10000, "Guangzhou", "Easy to use struts"); dataset. setvalue (20000, "Beijing", "JSF proficient"); dataset. setvalue (10000, "Shanghai", "JSF proficient"); dataset. setvalue (10000, "Guangzhou", "JSF proficient"); Return dataset ;}}

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