ireport4.5+javabean做饼图

    因为javaeye不好上图，所以全部打包在附件了。如果看到显示不了的图片可以按照顺序在附件额图片里面看到

    接到一个手机web报表开发的需求，用flash的报表试了一下，结果发现有些手机，有些浏览器看不了，只好用ireport试试生成图片格式的，测试通过。于是做了个饼图的小示例。

    当最新的的ireport4.5。

 

1、傻瓜式的软件安装，就不说了

2、基础文件

几个源码文件

Pie.java

package com.chart.domain;

import java.io.Serializable;

public class Pie implements Serializable {

 
 private static final long serialVersionUID = 1804559352204689761L;
 private String name;
 private double money;

 public Pie() {
 }

 public Pie(String name, double money) {
  super();
  this.name = name;
  this.money = money;
 }

 public String getName() {
  return name;
 }

 public void setName(String name) {
  this.name = name;
 }

 public double getMoney() {
  return money;
 }

 public void setMoney(double money) {
  this.money = money;
 }

}

PieDataSource.java

package com.chart.source;
import java.util.ArrayList;
import java.util.List;

import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRField;

import com.chart.domain.Pie;

public class PieDataSource implements JRDataSource {

 private int index;
 private List<Pie> dataList;

 public PieDataSource() {
  this(new ArrayList<Pie>());
 }

 public PieDataSource(List<Pie> dataList) {
  this.index = -1;
  this.dataList = dataList;
 }

 public Object getFieldValue(JRField arg0) throws JRException {

  Object o = null;
  String sName = arg0.getName();
  Pie result = dataList.get(index);

  if (result == null)
   return null;

  if (sName.equals("name")) {
   o = result.getName();
  } else if (sName.equals("money")) {
   o = result.getMoney();
  }
  return o;
 }

 public boolean next() throws JRException {
  index++;
  return (index < dataList.size());
 }

}

 

PieDataSourceprovider.java:

package com.chart.provider;
import java.util.ArrayList;
import java.util.List;

import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRAbstractBeanDataSourceProvider;

import com.chart.domain.Pie;
import com.chart.source.PieDataSource;

public class PieDataSourceProvider extends JRAbstractBeanDataSourceProvider {

 @SuppressWarnings("rawtypes")
 public PieDataSourceProvider(Class arg0) {
  super(arg0);
 }

 public PieDataSourceProvider() {
  super(Pie.class);
 }

 public JRDataSource create(JasperReport arg0) throws JRException {
  PieDataSource ds = new PieDataSource(getQueryResult());
  return ds;
 }

 public void dispose(JRDataSource arg0) throws JRException {
 }

 public static List<Pie> getQueryResult() {

  List<Pie> List = new ArrayList<Pie>();
  
  Pie pie1=new Pie("新浪",100000);  
        List.add(pie1);
  
  Pie pie2=new Pie("网易",200000);  
        List.add(pie2);
  
  Pie pie3=new Pie("搜狐",300000);  
        List.add(pie3);
  
  Pie pie4=new Pie("阿里巴巴",400000);  
        List.add(pie4);
  
  Pie pie5=new Pie("腾讯",500000);  
        List.add(pie5);
  return List;

 }

}

 

PieServlet.java

package com.chart.servlet;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.export.JRHtmlExporter;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.j2ee.servlets.ImageServlet;

import com.chart.domain.Pie;
import com.chart.provider.PieDataSourceProvider;
import com.chart.source.PieDataSource;

public class PieServlet extends HttpServlet {

 
 private static final long serialVersionUID = -1418314965002997292L;

 public void service(HttpServletRequest request, HttpServletResponse response)
   throws IOException, ServletException {
  PrintWriter out = response.getWriter();
  try {

   // 获得报表数据。这里使用ireport的测试数据。
   @SuppressWarnings("static-access")
   List<Pie> dataList = new PieDataSourceProvider().getQueryResult();

   // 载入报表模板，一定要指对路径和文件名
   File reportFile = new File(this.getServletContext().getRealPath(
     "/WEB-INF/classes/pieChart.jasper"));

   if (!reportFile.exists())
    throw new JRRuntimeException(
      "File WebappReport.jasper not found. The report design must be compiled first.");

   JasperReport jasperReport = (JasperReport) JRLoader
     .loadObject(reportFile.getPath());

   // 导入报表数据，并生成报表
   Map<String, Object> parameters = null;
   JasperPrint jasperPrint = JasperFillManager.fillReport(
     jasperReport, parameters, new PieDataSource(dataList));
   request.getSession().setAttribute(
     ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
     jasperPrint);

   // 输出html 用JRHtmlExporter
   JRHtmlExporter exporter = new JRHtmlExporter();

   exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
   exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
   // 设置报表图片的地址为"image?image="，因此要给image此地址安排一个servlet来输出图片，详细看web.xml文件。
   exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,
     "image?image=");
   exporter.exportReport();
  }

  catch (JRException e) {
   e.printStackTrace();
   out.println("<html>");
   out.println("<head>");
   out.println("<body>");
   out.println("JasperReports encountered this error:<br/> "
     + e.getMessage());
   out.println("</body>");
   out.println("</html>");
  }

 }

}
web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <servlet>
    <servlet-name>JasperReportImageServlet</servlet-name>
    <servlet-class>
   net.sf.jasperreports.j2ee.servlets.ImageServlet
  </servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>JasperReportImageServlet</servlet-name>
    <url-pattern>/image</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>PieServlet</servlet-name>
    <servlet-class>com.chart.servlet.PieServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>PieServlet</servlet-name>
    <url-pattern>/3dpie</url-pattern>
  </servlet-mapping>
</web-app>

以上文件的包看源码进行生成和项目搭建，注意项目要进行编译或者部署在tomcat，让其生成class文件。

项目包：

 

3、配置classpath

然后将项目build到ireport的classpath中去，注意不要选错文件夹。

4、配置domain，如果read attributes出错，返回上面的classpath重做，类文件没有加入到classpath中。

5、新建一个项目，按提示进行

选择模板Blank A4

填写报表名称—》

选择数据源

将自己写的provider放上去，测试是否成功

将domain的字段添加进field：

下一步选择group1:name

下一步 创建成功。

 

3、删除不用的column

6、打开组件面板，选择pie 3D，拖放到summary，将图形放大至合适大小

7、点击pie，右键chart Data

8、按下图配置field，注意不要弄错。

9、点击preview

11、查看结果，成功了。