Insert title here

Tue, 04 Dec 2007 01:57:00 GMT

实现方式�Q�jsp+javabean
版本 �Q�jfreechart-1.0.8
web-inf�Q�设�|?br />=====================================

  DisplayChart

   org.jfree.chart.servlet.DisplayChart


  DisplayChart
  /servlet/DisplayChart

======================================
jsp文�g�Q?br />=========================================================================
<%@ page language="java" contentType="text/html; charset=GBK"
pageEncoding="GBK"%>

Insert title here

class="com.mdcl.fso.homepage.chart.BarChart01" />

<%
String fileName = barchart01.drawPic(request.getSession(), out);
String graphURL = request.getContextPath()
+ "/servlet/DisplayChart?filename=" + fileName;
%>

" border="0" usemap="#<%=fileName %>" />

style="position:absolute; font-family:'宋体'; font-size: 12px;line-height: 20px;background-color:#FFFFEC; border: 1px solid #999999;display:none;left:0px;top:1px;">��试昄��

=========================================================================
java文�g
=========================================================================
package com.mdcl.fso.homepage.chart;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import java.awt.Color;
import java.awt.Font;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;

import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.urls.StandardCategoryURLGenerator;
import org.jfree.chart.urls.StandardPieURLGenerator;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.labels.*;
import org.jfree.ui.*;
import java.util.*;

import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspWriter;

import com.mdcl.fso.homepage.*;

public class BarChart01 {

private static DefaultCategoryDataset dataset = new DefaultCategoryDataset();

private DefaultCategoryDataset getDataset() {// 取数�?/p>

  List expense = new ArrayList();
  String sql = "select ftr.organ_id ,fs.dept_name,ftr.subject_id,fft.finance_type_name,ftr.rpt_date ,ftr.rpt_data "
    + "from fso_t_rpt_expense ftr,fso_sdept fs,fso_finance_type fft "
    + "where ftr.type_id='D' "
    + "and ftr.organ_id=fs.dept_id "
    + "and ftr.rpt_date='2007-08' "
    + "and fft.finance_type_id=ftr.subject_id "
    + "and ftr.organ_id='1140'";

  expense = DBDao.DbQueryExpense(sql);
  for (int i = 0; i < expense.size(); i++) {
   HashMap param = new HashMap();
   param = (HashMap) expense.get(i);

   double dt = Double.parseDouble(String.valueOf(param.get("rpt_data")));
   String a = (String) param.get("organ");
   String b = (String) param.get("subject");

dataset.addValue(dt, a, b);
}

return dataset;

}

public String drawPic(HttpSession session, JspWriter out) {
  String fileName = null;
  JFreeChart chart = ChartFactory.createBarChart3D("2007-08成本�l�计", "费用�c�d��",
    "金额�Q�单位：元）", getDataset(), PlotOrientation.VERTICAL, true, true,
    true);
  chart.setBackgroundPaint(Color.WHITE);

CategoryPlot plot = chart.getCategoryPlot();// 获取�l�图�?/p>

plot.setBackgroundPaint(new Color(255, 255, 255)); // 讄��l�图��景色

plot.setRangeGridlinePaint(Color.gray); // 讄��水��^方向背景�U�K��?/p>

plot.setRangeGridlinesVisible(true); // 讄��是否昄��水��^方向背景�U?默认��gؓTrue

plot.setDomainGridlinePaint(Color.black); // 讄��垂直方向背景�U�K��?/p>

// plot.setDomainGridlinesVisible(true); // 讄��是否昄��垂直方向背景�U?默认��gؓFalse

CategoryAxis domainAxis = plot.getDomainAxis();// 获取�l�计�U�类轴标题（X��_��

plot.setDomainAxis(domainAxis);// ��d��X�?/p>

BarRenderer3D renderer = new BarRenderer3D();// 获得BarRenderer3D�cȝ��实例�Q�目的是讄��柱�Ş的绘制属�?/p>

renderer.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator());//

renderer.setBaseItemURLGenerator(new StandardCategoryURLGenerator("index2.jsp"));// 生成热点,用于链接

renderer.setItemMargin(0.1);// 讄��每个�l�所包含的��^行柱的之间距��?/p>

renderer.setSeriesPaint(0, Color.GREEN);// 讄��柱子的颜�?br /> renderer.setSeriesPaint(1, Color.blue);// 讄��柱子的颜�?/p>

renderer.setBaseOutlinePaint(Color.BLACK);

renderer.setWallPaint(Color.gray);// 讄�� Wall 的颜�?/p>

renderer.setItemLabelAnchorOffset(10D);// 讄��柱�Ş图上的文字偏��d�?/p>

renderer.setBaseItemLabelFont(new Font("arial", Font.PLAIN, 10), true);// 讄��柱�Ş图上的文�?/p>

renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());// //昄��每个��q��数��|��q�修改该数值的字体属�?/p>

renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_CENTER));

renderer.setBaseItemLabelsVisible(true);

renderer.setMaximumBarWidth(0.050000000000000003D);

plot.setRenderer(renderer);

plot.setForegroundAlpha(0.80f);// 讄��q��透明�?/p>

// plot.setDomainAxisLocation(AxisLocation.TOP_OR_RIGHT);//讄��昄��位置

plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_RIGHT);// 讄��昄��位置

try {

PrintWriter pw = new PrintWriter(out);

StandardEntityCollection sec = new StandardEntityCollection();
ChartRenderingInfo info = new ChartRenderingInfo(sec);

   fileName = ServletUtilities.saveChartAsPNG(chart, 640, 400, info,
     session);
   // ChartUtilities.writeChartAsPNG(op,chart, 640, 400, info,true,0);
   ChartUtilities.writeImageMap(pw, fileName, info, true);
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

return fileName;

}

}
=========================================================================

李云�?/a> 2007-12-04 09:57 发表评论

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