<%@ page language="java" pageEncoding="UTF-8"%>
<!-- 导入jfreechart 包 -->
<%@ page import="org.jfree.chart.ChartFactory,
java.awt.Color,
java.awt.Font,
org.jfree.chart.JFreeChart,
org.jfree.chart.axis.ValueAxis,
org.jfree.chart.labels.StandardCategoryItemLabelGenerator,
org.jfree.chart.plot.CategoryPlot,
org.jfree.chart.plot.PlotOrientation,
org.jfree.chart.renderer.category.*,
org.jfree.chart.servlet.ServletUtilities,
org.jfree.data.category.CategoryDataset,
org.jfree.data.category.DefaultCategoryDataset,
java.util.ArrayList"
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>信息分类统计</title>
</head>
<body>
<%
CategoryDataset dataset;
String category="江苏营业厅";
dataset=this.getDataSet();
String title=category+"业务缴费总金额统计";
JFreeChart chart = ChartFactory.createBarChart(title,
"城市",
"业务缴费总金额",
dataset,
PlotOrientation.VERTICAL,
true,
false,
false);
String filename = ServletUtilities.saveChartAsPNG(chart,750, 350, null, session);
String graphURL = request.getContextPath() + "/servlet/DisplayChart?filename=" + filename;
%>
<P ALIGN="CENTER">
<img src="<%=graphURL%>" border=0 usemap="#<%= filename %>">
</P>
<%!
public static CategoryDataset getDataSet()
{
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
for(int i=0;i<3;i++)
{
dataset.addValue(10,"nj", "");
dataset.addValue(30,"zj", "");
dataset.addValue(30,"xz", "");
dataset.addValue(20,"sz", "");
}
return dataset;
}
%>
</body>
</html>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>DisplayChart</servlet-name>
<servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
</servlet>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>JasperServlet</servlet-name>
<servlet-class>com.jasper.JasperServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DisplayChart</servlet-name>
<url-pattern>/servlet/DisplayChart</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>JasperServlet</servlet-name>
<url-pattern>/servlet/JasperServlet</url-pattern>
</servlet-mapping>
<!-- ireport -->
<servlet>
<servlet-name>ImageServlet</servlet-name>
<servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ImageServlet</servlet-name>
<url-pattern>/servlets/image</url-pattern>
</servlet-mapping>
</web-app>
