jfreechart 的各种图类封装
上代码：
package com.myc.app.common;
import java.awt.Color;
import java.awt.Font;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.struts2.ServletActionContext;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
/***
?* Jfreechart
?*
?* @author 朱湘鄂
?*
?*/
public class JfreeChart {
?// 2D饼图方法
?public static String generatePieChart(DefaultPieDataset dataset, String title,int w, int h) {??
???? HttpServletRequest? request=ServletActionContext.getRequest();
??????? HttpSession session = request.getSession();?
??????? StringWriter strWriter=new StringWriter();
??????? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
???// 2D图
???JFreeChart chart = ChartFactory.createPieChart(
?????title, // 图表标题
?????dataset, // 数据集
?????true, // 是否显示图例
?????true, // 是否生成工具
?????false // 是否生成URL链接
?????);
???chart.setBackgroundPaint(Color.pink);
???try {
????// ------得到chart的保存路径----
????ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
????filename = ServletUtilities.saveChartAsJPEG(chart, w, h,info, session);
????// ------使用printWriter将文件写出----
????ChartUtilities.writeImageMap(pw, filename, info, true);
????pw.flush();
????pw.close();
???} catch (IOException e) {
????e.printStackTrace();
???}
???fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??return fname;
?}
?
?// 3D饼图方法
?public static String generatePieChart3D(DefaultPieDataset dataset, String title,int w, int h) {??
???? HttpServletRequest? request=ServletActionContext.getRequest();
??????? HttpSession session = request.getSession();?
??????? StringWriter strWriter=new StringWriter();
??????? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
???// 3D图
???? JFreeChart chart = ChartFactory.createPieChart3D(
?????title, // 图表标题
?????dataset, // 数据集
?????true, // 是否显示图例
?????true, // 是否生成工具
?????false // 是否生成URL链接
?????);
???chart.setBackgroundPaint(Color.pink);
???try {
????// ------得到chart的保存路径----
????ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
????filename = ServletUtilities.saveChartAsJPEG(chart, w, h,info, session);
????// ------使用printWriter将文件写出----
????ChartUtilities.writeImageMap(pw, filename, info, true);
????pw.flush();
????pw.close();
???} catch (IOException e) {
????e.printStackTrace();
???}
???fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??return fname;
?}
?
?// 3D水平柱状图
?public static String generateBarChart3D(CategoryDataset dataset,String title,String catalog,String valueaxis,int w, int h) {??
??HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
??String filename = "";
??String fname="";
??? ?JFreeChart chart = ChartFactory.createBarChart3D(
??? ???title, // 图表标题
??? ???catalog, //目录轴的显示标签
????valueaxis, //数值轴的显示标签
????dataset, // 数据集
????PlotOrientation.HORIZONTAL, // 图表方向：水平
????true, // 是否显示图例(对于简单的柱状图必须是false)
????false, // 是否生成工具
????false // 是否生成URL链接
????);
??try {
???// 得到chart的保存路径
???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
???filename = ServletUtilities.saveChartAsPNG(chart, w, h, info,session);
???// 使用printWriter将文件写出
???ChartUtilities.writeImageMap(pw, filename, info, true);
???pw.flush();
???pw.close();
??} catch (IOException e) {
???// TODO 自动生成 catch 块
???e.printStackTrace();
??}
??fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??return fname;
?}
?
?// 2D水平柱状图
?public static String generateBarChart2D(CategoryDataset dataset,String title,String catalog,String valueaxis,int w, int h) {??
??HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
??String filename = "";
??String fname="";
??? ?JFreeChart chart = ChartFactory.createBarChart(
??? ???title, // 图表标题
??? ???catalog, //目录轴的显示标签
????valueaxis, //数值轴的显示标签
????dataset, // 数据集
????PlotOrientation.HORIZONTAL, // 图表方向：水平
????true, // 是否显示图例(对于简单的柱状图必须是false)
????false, // 是否生成工具
????false // 是否生成URL链接
????);
??try {
???// 得到chart的保存路径
???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
???filename = ServletUtilities.saveChartAsPNG(chart, w, h, info,session);
???// 使用printWriter将文件写出
???ChartUtilities.writeImageMap(pw, filename, info, true);
???pw.flush();
???pw.close();
??} catch (IOException e) {
???// TODO 自动生成 catch 块
???e.printStackTrace();
??}
??fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??return fname;
?}
?// 3D纵向柱状图
?public static String generateBarChartHeng3D(CategoryDataset dataset,String title,String catalog,String valueaxis,int w, int h) {??
??HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
??String filename = "";
??String fname="";
??? ?JFreeChart chart = ChartFactory.createBarChart3D(
??? ???title, // 图表标题
??? ???catalog, //目录轴的显示标签
????valueaxis, //数值轴的显示标签
????dataset, // 数据集
????PlotOrientation.VERTICAL, // 图表方向：纵向
????true, // 是否显示图例(对于简单的柱状图必须是false)
????false, // 是否生成工具
????false // 是否生成URL链接
????);
??try {
???// 得到chart的保存路径
???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
???filename = ServletUtilities.saveChartAsPNG(chart, w, h, info,session);
???// 使用printWriter将文件写出
???ChartUtilities.writeImageMap(pw, filename, info, true);
???pw.flush();
???pw.close();
??} catch (IOException e) {
???// TODO 自动生成 catch 块
???e.printStackTrace();
??}
??fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??return fname;
?}
?
?// 2D纵向柱状图
?public static String generateBarChartHeng2D(CategoryDataset dataset,String title,String catalog,String valueaxis,int w, int h) {??
??HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
??String filename = "";
??String fname="";
??? ?JFreeChart chart = ChartFactory.createBarChart(
??? ???title, // 图表标题
??? ???catalog, //目录轴的显示标签
????valueaxis, //数值轴的显示标签
????dataset, // 数据集
????PlotOrientation.VERTICAL, // 图表方向：水平
????true, // 是否显示图例(对于简单的柱状图必须是false)
????false, // 是否生成工具
????false // 是否生成URL链接
????);
??try {
???// 得到chart的保存路径
???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
???filename = ServletUtilities.saveChartAsPNG(chart, w, h, info,session);
???// 使用printWriter将文件写出
???ChartUtilities.writeImageMap(pw, filename, info, true);
???pw.flush();
???pw.close();
??} catch (IOException e) {
???// TODO 自动生成 catch 块
???e.printStackTrace();
??}
??fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??return fname;
?}
?
? //区域图
?? public static String generateAddressChart(CategoryDataset createDataset,String title,String hengTitle,String zongtitle,int w,int h){
????? HttpServletRequest? request=ServletActionContext.getRequest();
????? HttpSession session = request.getSession();?
????? StringWriter strWriter=new StringWriter();
????? PrintWriter pw=new PrintWriter(strWriter);
???String filename = "";
???String fname="";
???? JFreeChart chart = ChartFactory.createAreaChart(????????
???? title,???????? //图表标题???????????????
???? hengTitle,???????????????????? //横轴标题????????????
???? zongtitle,?????????????????? //纵轴标题????????????????
???? createDataset,?????? //绘图数据集?????????
???? PlotOrientation.VERTICAL,? //定义区域图的方向为纵向???????????
???? true,?????????????????????????? //是否显示图例标识???????????
???? true,?????????????????????????? //是否显示tooltips???????
???? false);???????????????????? //是否支持超链接????????? //设置标题字体?????
??? chart.getTitle().setFont(new Font("隶书", Font.BOLD, 25));???????
??? //设置图例类别字体???????
??? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
??? //设置背景色?????
??? chart.setBackgroundPaint(new Color(160,214,248));?????
??? //获取绘图区对象????
??? @SuppressWarnings("unused")
??CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsPNG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;
??? return fname;
?? }
?
?? //3D纵向堆栈图
?? public static String generateStockChartZong3D(CategoryDataset dataset,String title,String hengTitle,String zongtitle,int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
??? JFreeChart chart = ChartFactory.createStackedBarChart3D(????????
????? title,???????? //图表标题???????????????
????? hengTitle,?????????????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.VERTICAL,? //定义区域图的方向为纵向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接????????? //设置标题字体?????
??? chart.getTitle().setFont(new Font("隶书", Font.BOLD, 25));???????
??? //设置图例类别字体???????
??? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
??? //设置背景色?????
??? chart.setBackgroundPaint(new Color(160,214,248));?????
??? //获取绘图区对象????
??? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }
??
?? //3D横向堆栈图
?? public static String generateStockChartHeng3D(CategoryDataset dataset,String title,String hengTitle,String zongtitle,int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
??? JFreeChart chart = ChartFactory.createStackedBarChart3D(????????
????? title,???????? //图表标题???????????????
????? hengTitle,?????????????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.HORIZONTAL,? //定义区域图的方向为横向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接????????? //设置标题字体?????
??? chart.getTitle().setFont(new Font("隶书", Font.BOLD, 25));???????
??? //设置图例类别字体???????
??? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
??? //设置背景色?????
??? chart.setBackgroundPaint(new Color(160,214,248));?????
??? //获取绘图区对象????
??? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }
??
?? //2D纵向堆栈图
?? public static String generateStockChartZong2D(CategoryDataset dataset,String title,String hengTitle,String zongtitle,int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
??? JFreeChart chart = ChartFactory.createStackedBarChart(????????
????? title,???????? //图表标题???????????????
????? hengTitle,?????????????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.VERTICAL,? //定义区域图的方向为纵向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接????????? //设置标题字体?????
??? chart.getTitle().setFont(new Font("隶书", Font.BOLD, 25));???????
??? //设置图例类别字体???????
??? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
??? //设置背景色?????
??? chart.setBackgroundPaint(new Color(160,214,248));?????
??? //获取绘图区对象????
??? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }
??
?? //2D横向堆栈图
?? public static String generateStockChartHeng2D(CategoryDataset dataset,String title,String hengTitle,String zongtitle,int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
??? JFreeChart chart = ChartFactory.createStackedBarChart(????????
????? title,???????? //图表标题???????????????
????? hengTitle,?????????????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.HORIZONTAL,? //定义区域图的方向为纵向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接????????? //设置标题字体?????
??? chart.getTitle().setFont(new Font("隶书", Font.BOLD, 25));???????
??? //设置图例类别字体???????
??? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
??? //设置背景色?????
??? chart.setBackgroundPaint(new Color(160,214,248));?????
??? //获取绘图区对象????
??? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }
??
? //2D线性图?
?? public static String generateLineChart2D(CategoryDataset dataset,String title,String hengTitle,String zongtitle, int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
???? JFreeChart chart = ChartFactory.createLineChart(???????
????? title,???????????????? //图表标题???????????????
????? hengTitle,???????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.VERTICAL,? //定义区域图的方向为纵向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接???
??????? //设置标题字体?????
???? chart.getTitle().setFont(new Font("隶书",Font.BOLD, 25));???????
???? //设置图例类别字体???????
???? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
???? //设置背景色?????
???? chart.setBackgroundPaint(new Color(160,214,248));?????
???? //获取绘图区对象????
???? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }?
??
?//2D线性图? 纵轴不从0起
?? public static String generateLineChart2Ds(CategoryDataset dataset,String title,String hengTitle,String zongtitle, int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
???? JFreeChart chart = ChartFactory.createLineChart(???????
????? title,???????????????? //图表标题???????????????
????? hengTitle,???????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.VERTICAL,? //定义区域图的方向为纵向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接?
???? CategoryPlot categoryplot = (CategoryPlot)chart.getPlot();//获得 plot：3dBar为CategoryPlot
???? NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis();
???//numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
???numberaxis.setAutoRangeIncludesZero(false);//设置Y轴的数据自动范围，不从0开始
???numberaxis.setAutoTickUnitSelection(false); //不自动设置刻度
???numberaxis.setAutoRangeMinimumSize(0.5d);
???//numberaxis.seta
???NumberTickUnit ntu= new NumberTickUnit(0.1d); //设置Y轴的刻度
???numberaxis .setTickUnit(ntu);
??????? //设置标题字体?????
???? chart.getTitle().setFont(new Font("隶书",Font.BOLD, 25));???????
???? //设置图例类别字体???????
???? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
???? //设置背景色?????
???? chart.setBackgroundPaint(new Color(160,214,248));?????
???? //获取绘图区对象????
???? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }?
??
?//3D线性图?
?? public static String generateLineChart3D(CategoryDataset dataset,String title,String hengTitle,String zongtitle, int w,int h){
???? HttpServletRequest? request=ServletActionContext.getRequest();
???? HttpSession session = request.getSession();?
???? StringWriter strWriter=new StringWriter();
???? PrintWriter pw=new PrintWriter(strWriter);
???? String filename = "";
???? String fname="";
???? JFreeChart chart = ChartFactory.createLineChart3D(???????
????? title,???????????????? //图表标题???????????????
????? hengTitle,???????????? //横轴标题????????????
????? zongtitle,?????????????????? //纵轴标题????????????????
????? dataset,??????????????????? //绘图数据集?????????
????? PlotOrientation.VERTICAL,? //定义区域图的方向为纵向???????????
????? true,?????????????????????????? //是否显示图例标识???????????
????? true,?????????????????????????? //是否显示tooltips???????
????? false);???????????????????? //是否支持超链接????????? //设置标题字体?????
???? chart.getTitle().setFont(new Font("隶书",Font.BOLD, 25));???????
???? //设置图例类别字体???????
???? chart.getLegend().setItemFont(new Font("宋体", Font.BOLD, 15));????
???? //设置背景色?????
???? chart.setBackgroundPaint(new Color(160,214,248));?????
???? //获取绘图区对象????
???? CategoryPlot plot = chart.getCategoryPlot();?
?? ??try {
? ???//------得到chart的保存路径----?
? ???ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
? ???filename = ServletUtilities.saveChartAsJPEG(chart, w, h, info,session);
? ???//------使用printWriter将文件写出----
? ???ChartUtilities.writeImageMap(pw, filename, info, true);
? ???pw.flush();
? ???pw.close();
? ??} catch (IOException e) {
? ???// TODO 自动生成 catch 块
? ???e.printStackTrace();
? ??}
? ?? fname=request.getContextPath() + "/servlet/DisplayChart?filename="+filename ;?
??? return fname;
?? }?
}
