Jfreechart generates different statistical charts

Package com. jfc. ww. servlet;

Import java. AWT. color;
Import java. AWT. Font;
Import java. Io. file;
Import java. Io. ioexception;
Import java. Io. printwriter;
Import java. Text. dateformat;
Import java. Text. decimalformat;
Import java. Text. numberformat;
Import java. Text. simpledateformat;

Import javax. servlet. servletexception;
Import javax. servlet. http. httpservlet;
Import javax. servlet. http. httpservletrequest;
Import javax. servlet. http. httpservletresponse;
Import javax. servlet. http. httpsession;

Import org. jfree. Chart. chartfactory;
Import org. jfree. Chart. chartframe;
Import org. jfree. Chart. chartrenderinginfo;
Import org. jfree. Chart. chartutilities;
Import org. jfree. Chart. jfreechart;
Import org. jfree. Chart. axis. categoryaxis;
Import org. jfree. Chart. axis. dateaxis;
Import org. jfree. Chart. axis. datetickunit;
Import org. jfree. Chart. axis. datetickunittype;
Import org. jfree. Chart. axis. numberaxis;
Import org. jfree. Chart. axis. valueaxis;
Import org. jfree. Chart. entity. standardentitycollection;
Import org. jfree. Chart. Labels. itemlabelanchor;
Import org. jfree. Chart. Labels. itemlabelposition;
Import org. jfree. Chart. Labels. standardcategoryitemlabelgenerator;
Import org. jfree. Chart. Labels. standardpiesectionlabelgenerator;
Import org. jfree. Chart. Plot. categoryplot;
Import org. jfree. Chart. Plot. pieplot;
Import org. jfree. Chart. Plot. plotorientation;
Import org. jfree. Chart. Plot. xyplot;
Import org. jfree. Chart. Renderer. Category. barrenderer;
Import org. jfree. Chart. Renderer. Category. barrenderer3d;
Import org. jfree. Chart. Renderer. Category. lineandshaperenderer;
Import org. jfree. Chart. servlet. servletutilities;
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. datasetgroup;
Import org. jfree. Data. General. datasetutilities;
Import org. jfree. Data. General. defaultpiedataset;
Import org. jfree. Data. Time. Day;
Import org. jfree. Data. Time. Timeseries;
Import org. jfree. Data. Time. timeseriescollection;
Import org. jfree. Data. XY. xydataset;
Import org. jfree. Date. serialdateutilities;
Import org. jfree. UI. textanchor;

Public class jfreecharservilet extends httpservlet {
 

Public void doget (httpservletrequest request, httpservletresponse response ){
Response. setcontenttype ("text/html ");
This. dopost (request, response );
}

 
Public void dopost (httpservletrequest request, httpservletresponse response ){
Response. setcontenttype ("text/html ");
Httpsession session = request. getsession ();
String filetype = request. getparameter ("filetype ");
String filename = NULL;
If (filetype. Equals ("pie ")){
Filename = This. pietest (session );
} Else if (filetype. Equals ("bar ")){
Filename = This. bartest (session );
} Else if (filetype. Equals ("stackedbar ")){
Filename = This. stackedbartest (session );
} Else if (filetype. Equals ("line ")){
Filename = This. linetest (session );
} Else if (filetype. Equals ("Timeseries ")){
Filename = This. timeseriestest (session );
}
Request. setattribute ("FILENAME", filename );
Try {
Request. getrequestdispatcher ("content. jsp"). Forward (request, response );
} Catch (servletexception e ){
E. printstacktrace ();
} Catch (ioexception e ){
E. printstacktrace ();
}
}
 
// Pie chart
Public String pietest (httpsession session ){
String filename = NULL;
Defaultpiedataset DFD = new defaultpiedataset ();
DFD. setvalue ("Zhang San", 10 );
DFD. setvalue ("Li Si", 15 );
DFD. setvalue ("CCC", 30 );
DFD. setvalue ("DDD", 25 );
DFD. setvalue ("eee", 5 );
Jfreechart jfc = chartfactory. createpiechart3d ("pie chart Statistics", DFD, true );
Jfc. gettitle (). setfont (new font ("", Font. Bold, 20); // set the title Font to prevent Chinese garbled characters
Pieplot plot = (pieplot) jfc. getplot (); // set the font in the pie to prevent Chinese garbled characters
Plot. setlabelfont (new font ("", Font. Bold, 20 ));
Plot. setnodatamessage ("no data ");
Plot. setcircular (true );
Plot. setlabelgenerator (New standardpiesectionlabelgenerator ("{0} {2}", numberformat. getnumberinstance (), new decimalformat ("0.00% ")));
Plot. setforegroundalpha (0.7f); // transparency
Legendtitle = jfc. getlegend (0); // set the low-column font to prevent Chinese garbled characters
Legendtitle. setitemfont (new font ("", Font. italic, 20 ));
Chartrenderinginfo info = new chartrenderinginfo (New standardentitycollection ());
Try {
Filename = servletutilities. savechartaspng (jfc, 800,500, info, session );
} Catch (ioexception e ){
E. printstacktrace ();
}
Return filename;
}
 
 
// Bar chart
Public String bartest (httpsession session ){
String filename = NULL;
Defaultcategorydataset dataset = new defaultcategorydataset ();
Dataset. addvalue (300, "Guangzhou", "apple ");
Dataset. addvalue (200, "Guangzhou", "Pears ");
Dataset. addvalue (500, "Guangzhou", "grape ");
Dataset. addvalue (340, "Guangzhou", "Mango ");
Dataset. addvalue (280, "Guangzhou", "litchi ");
Jfreechart jfc = chartfactory. createbarchart3d ("bar chart Statistics", "Fruit", "sales", dataset, plotorientation. Vertical, true );
Jfc. settitle (New texttitle ("bar chart Statistics", new font ("", Font. Bold + font. italic, 20 )));
Categoryplot plot = (categoryplot) jfc. getplot ();
Categoryaxis domainaxis = plot. getdomainaxis ();
Domainaxis. setvisible (true );
Domainaxis. setlowermargin (0.1 );
Domainaxis. setuppermargin (0.1 );
Domainaxis. setlabelfont (new font ("", Font. Bold, 12); // horizontal axis coordinate title Font
Domainaxis. setticklabelfont (new font ("", Font. Bold, 12); // horizontal bar title Font
Numberaxis = (numberaxis) plot. getrangeaxis ();
Numberaxis. setlabelfont (new font ("", Font. Bold, 12); // font of the vertical axis coordinate title
Valueaxis = plot. getrangeaxis ();
Valueaxis. setpositivearrowvisible (true); // whether to display the Y axis coordinates. Only the headers are required.
Barrenderer Renderer = (barrenderer) plot. getrenderer ();
// Display the value of each column and modify the font attribute of the value
Renderer. setitemlabelgenerator (New standardcategoryitemlabelgenerator ());
Renderer. setitemlabelfont (new font ("", Font. Plain, 9 ));
Renderer. setitemlabelsvisible (true );
Plot. setrenderer (Renderer );
Plot. setforegroundalpha (0.8f); // transparency
Legendtitle = jfc. getlegend (0); // set the low-column font to prevent Chinese garbled characters
Legendtitle. setitemfont (new font ("", Font. italic, 20 ));
Try {
Filename = servletutilities. savechartaspng (jfc, 800,500, null, session );
} Catch (ioexception e ){
E. printstacktrace ();
}
Return filename;
}
 
 
// Heap column chart
Public String stackedbartest (httpsession session ){
String filename = NULL;
Double [] [] DATA = new double [] [] {365,321,257,156,147}, {369,214,587,263,666}, {236,987,546,258,418}, {369,258,147,456,122}, {759,153,751,359,951 }};
String [] rowkeys = {"apple", "Pear", "grape", "banana", "orange "};
String [] columnkeys = {"Beijing", "Shanghai", "Guangzhou", "Shenzhen", "Dalian "};
Categorydataset dataset = datasetutilities. createcategorydataset (rowkeys, columnkeys, data );
Jfreechart jfc = chartfactory. createstackedbarchart3d ("heap bar chart Statistics", "Fruit", "sales", dataset, plotorientation. Vertical, true );
Jfc. settitle (New texttitle ("heap bar chart Statistics", new font ("", Font. italic + font. italic, 20 )));
Categoryplot plot = (categoryplot) jfc. getplot ();
Categoryaxis domainaxis = plot. getdomainaxis ();
Domainaxis. setvisible (true );
Domainaxis. setlowermargin (0.05 );
Domainaxis. setuppermargin (0.05 );
Domainaxis. setlabelfont (new font ("", Font. Bold, 12); // horizontal axis coordinate title Font
Domainaxis. setticklabelfont (new font ("", Font. Bold, 12); // horizontal bar title Font
Numberaxis = (numberaxis) plot. getrangeaxis ();
Numberaxis. setlabelfont (new font ("", Font. Bold, 12); // font of the vertical axis coordinate title
Valueaxis = plot. getrangeaxis ();
Valueaxis. setpositivearrowvisible (true); // whether to display the vertical axis coordinates pointing to the scissors
Barrenderer Renderer = new barrenderer3d ();
Renderer. setmaximumbarwidth (0.5); // The width of the bar.
Renderer. setitemmargin (0.05); // group column Interval
// Display the value of each column and modify the font attribute of the value
Renderer. setitemlabelgenerator (New standardcategoryitemlabelgenerator ());
Renderer. setitemlabelfont (new font ("", Font. Bold, 8); // bold on the 6 th
Renderer. setitemlabelpaint (color. Black); // The font is black.
Renderer. setitemlabelsvisible (true );
// Display the value of each column and modify the font attribute of the value
Renderer. setitemmargin (0.01 );
Plot. setrenderer (Renderer );
Plot. setforegroundalpha (0.8f); // transparency
Legendtitle = jfc. getlegend (0); // set the low-column font to prevent Chinese garbled characters
Legendtitle. setitemfont (new font ("", Font. italic, 20 ));
Try {
Filename = servletutilities. savechartaspng (jfc, 800,500, null, session );
} Catch (ioexception e ){
E. printstacktrace ();
}
Return filename;
}
 
// Line chart
Public String linetest (httpsession session ){
String filename = NULL;
Defaultcategorydataset linedataset = new defaultcategorydataset ();
// Curve name
String Series1 = "refrigerator ";
String series2 = "Color TV ";
String series3 = "washing machine ";

// Horizontal axis name (column name)
String type1 = "January ";
String type2 = "February ";
String type3 = "March ";
String type4 = "April ";
String type5 = "May ";
String type6 = "June ";

Linedataset. addvalue (0.0, Series1, type1 );
Linedataset. addvalue (4.2, Series1, type2 );
Linedataset. addvalue (3.9, Series1, type3 );
Linedataset. addvalue (3.5, Series1, type4 );
Linedataset. addvalue (5.4, Series1, type5 );
Linedataset. addvalue (8.0, Series1, type6 );

Linedataset. addvalue (1.0, series2, type1 );
Linedataset. addvalue (5.2, series2, type2 );
Linedataset. addvalue (7.9, series2, type3 );
Linedataset. addvalue (2.2, series2, type4 );
Linedataset. addvalue (9.0, series2, type5 );
Linedataset. addvalue (3.5, series2, type6 );

Linedataset. addvalue (2.0, series3, type1 );
Linedataset. addvalue (9.2, series3, type2 );
Linedataset. addvalue (8.9, series3, type3 );
Linedataset. addvalue (5.4, series3, type4 );
Linedataset. addvalue (4.1, series3, type5 );
Linedataset. addvalue (2.8, series3, type6 );

Jfreechart jfc = chartfactory. createlinechart ("line chart", "time", "sales (millions)", linedataset, plotorientation. Vertical, true, true, false );
Jfc. settitle (New texttitle ("line chart Statistics", new font ("", Font. Bold + font. italic, 20 )));
Categoryplot plot = (categoryplot) jfc. getplot ();
Categoryaxis domainaxis = plot. getdomainaxis ();
Domainaxis. setvisible (true );
Domainaxis. setlowermargin (0.05 );
Domainaxis. setuppermargin (0.05 );
Domainaxis. setlabelfont (new font ("", Font. Bold, 12); // horizontal axis coordinate title Font
Domainaxis. setticklabelfont (new font ("", Font. Bold, 12); // horizontal bar title Font
Numberaxis = (numberaxis) plot. getrangeaxis ();
Numberaxis. setlabelfont (new font ("", Font. Bold, 12); // font of the vertical axis coordinate title
Numberaxis. setstandardtickunits (numberaxis. createintegertickunits ());
Numberaxis. setautorangeincludeszero (true );
Numberaxis. setuppermargin (0.10 );
Numberaxis. setlabelangle (math. PI/2.0 );
Valueaxis = plot. getrangeaxis ();
Valueaxis. setpositivearrowvisible (true); // whether to display the vertical axis coordinates pointing to the scissors
Legendtitle = jfc. getlegend (0); // set the low-column font to prevent Chinese garbled characters
Legendtitle. setitemfont (new font ("", Font. italic, 20 ));
// Set the discount point to be highlighted
Lineandshaperenderer Renderer = (lineandshaperenderer) plot. getrenderer ();
Renderer. setshapesvisible (true );
Renderer. setdrawoutlines (true );
Renderer. setusefillpaint (true );
Renderer. setfillpaint (Java. AWT. color. White );
// Display the discount value
Renderer. setitemlabelgenerator (New standardcategoryitemlabelgenerator ());
Renderer. setitemlabelfont (new font ("", Font. Bold, 10); // bold on the 6 th
Renderer. setitemlabelpaint (color. Black); // The font is black.
Renderer. setitemlabelsvisible (true );
Try {
Filename = servletutilities. savechartaspng (jfc, 800,500, null, session );
} Catch (ioexception e ){
E. printstacktrace ();
}
Return filename;
}
 
// Time sequence diagram
Public String timeseriestest (httpsession session ){
String filename = NULL;
Xydataset timeseriescollection = NULL;
Timeseries = new Timeseries ("data ");
Day = New Day (2010,); // instantiate day
Double D = 3000d;
// Add 365 days of data per year
For (INT I = 0; I <365; I ++ ){
D = d + (math. Random ()-0.5) * 10; // create random data
Timeseries. Add (day, d); // Add data to the dataset
Day = (day) day. Next ();
}
// Create a timeseriescollection object
Timeseriescollection = new timeseriescollection (Timeseries );
Jfreechart jfc = chartfactory. createtimeserieschart ("Sequence Chart Statistics", "sales month", "sales volume (parts)", timeseriescollection, false );
Jfc. settitle (New texttitle ("Sequence Chart Statistics", new font ("", Font. Bold + font. italic, 20 )));
// Set the title Font
Jfc. gettitle (). setfont (new font ("", Font. Bold, 26 ));
// Jfc. setbackgroundpaint (new color (252,175,222); // sets the background color.
Xyplot plot = jfc. getxyplot (); // obtain the chart attributes
Plot. setdomaingridlinesvisible (true); // you can specify that the grid is not displayed.
Dateaxis = (dateaxis) plot. getdomainaxis (); // obtain the timeline object
Dateaxis. setlabelfont (new font ("", Font. italic, 18); // set the timeline font
Dateaxis. setticklabelfont (new font ("", Font. Plain, 12); // set the font of the timeline ruler Value
Dateaxis. setlowermargin (0.0); // you can specify the minimum value displayed on the timeline.
Valueaxis = plot. getrangeaxis (); // obtain the data axis object
Valueaxis. setlabelfont (new font ("", Font. italic, 18); // set the data font
Dateformat format = new simpledateformat ("mm Month"); // create Date Format object
Datetickunit DTU = new datetickunit (datetickunittype. Day, 29, format); // create a datetickunit object
Dateaxis. settickunit (DTU); // you can specify a date tag for a date axis.
Try {
Filename = servletutilities. savechartaspng (jfc, 800,500, null, session );
} Catch (ioexception e ){
E. printstacktrace ();
}
Return filename;
}
 

 

 

/**
Public static void main (string [] ARGs ){
Xydataset timeseriescollection = NULL;
Timeseries = new Timeseries ("data ");
Day = New Day (2010,); // instantiate day
Double D = 3000d;
// Add 365 days of data per year
For (INT I = 0; I <365; I ++ ){
D = d + (math. Random ()-0.5) * 10; // create random data
Timeseries. Add (day, d); // Add data to the dataset
Day = (day) day. Next ();
}
// Create a timeseriescollection object
Timeseriescollection = new timeseriescollection (Timeseries );
Jfreechart jfc = chartfactory. createtimeserieschart ("Sequence Chart Statistics", "sales month", "sales volume (parts)", timeseriescollection, false );
Jfc. settitle (New texttitle ("Sequence Chart Statistics", new font ("", Font. Bold + font. italic, 20 )));
// Set the title Font
Jfc. gettitle (). setfont (new font ("", Font. Bold, 26 ));
// Jfc. setbackgroundpaint (new color (252,175,222); // sets the background color.
Xyplot plot = jfc. getxyplot (); // obtain the chart attributes
Plot. setdomaingridlinesvisible (true); // you can specify that the grid is not displayed.
Dateaxis = (dateaxis) plot. getdomainaxis (); // obtain the timeline object
Dateaxis. setlabelfont (new font ("", Font. italic, 18); // set the timeline font
Dateaxis. setticklabelfont (new font ("", Font. Plain, 12); // set the font of the timeline ruler Value
Dateaxis. setlowermargin (0.0); // you can specify the minimum value displayed on the timeline.
Valueaxis = plot. getrangeaxis (); // obtain the data axis object
Valueaxis. setlabelfont (new font ("", Font. italic, 18); // set the data font
Dateformat format = new simpledateformat ("mm Month"); // create Date Format object
Datetickunit DTU = new datetickunit (datetickunittype. Day, 29, format); // create a datetickunit object
Dateaxis. settickunit (DTU); // you can specify a date tag for a date axis.


Chartframe cf = new chartframe ("jfreechar test", jfc, true );
Cf. Pack ();
Cf. setvisible (true );


}

 
**/
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Receiving page

</Head>
<%
String filename = (string) request. getattribute ("FILENAME ");
String graphurl = request. getcontextpath () + "/servlet/displaychart? Filename = "+ filename;
%>
<Body>

</Body>
</Html>

 

 

 

 

 

 

 

 

 

XML file configuration

<Servlet>
<Servlet-Name> displaychart </servlet-Name>
<Servlet-class> org. jfree. Chart. servlet. displaychart </servlet-class>
</Servlet>
<Servlet-mapping>
<Servlet-Name> displaychart </servlet-Name>
<URL-pattern>/servlet/displaychart </url-pattern>
</Servlet-mapping>