jfreechart

action:

package com.bplow.look.jfreechartTest.web;

import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.io.PrintWriter;
import java.util.Map;

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

import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.interceptor.SessionAware;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DatasetRenderingOrder;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.urls.StandardCategoryURLGenerator;
import org.jfree.chart.urls.StandardPieURLGenerator;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;

import com.opensymphony.xwork2.ActionSupport;

@Namespace("/wmc")
public class DualaxisAction extends ActionSupport implements  SessionAware, ServletRequestAware,ServletResponseAware{
    
    Map<String, Object> session;
    HttpServletRequest request;
    HttpServletResponse response;
    
    public int width=500;
    public int height=300;
    
    JFreeChart chart=null;
    
    public String drawImage(){
       
        final CategoryDataset dataset1 = createDataset1();

        // create the chart...  创建一个图表
        chart = ChartFactory.createBarChart(
            "王明超jfreechart",        // chart title 标题
            "王明超Category",               // domain axis label 横坐标
            "王明超Value",                  // range axis label 纵坐标
            dataset1,                 // data 数据
            PlotOrientation.VERTICAL, // 竖直图表
            true,                     // include legend 是否显示legend
            true,                     // tooltips? 是否显示tooltip
            true                     // URL generator?  Not required... 是否使用url链接
        );
        //设置宽度、高度
        width=800;
        height=300;
        chart.getTitle().setFont(new Font("宋体", Font.BOLD, 16));//设置title的字体类型，防止中文乱码
        chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));//设置图表底部的字体类型，防止中文乱码
        chart.setBackgroundPaint(Color.white);    //设定背景色为白色
        final CategoryPlot plot = chart.getCategoryPlot();//获得 plot：3dBar为CategoryPlot
        plot.getDomainAxis().setLabelFont(new Font("宋体", Font.PLAIN, 12));//设置x轴的字体类型，防止中文乱码
        plot.getRangeAxis().setLabelFont(new Font("sans-serif", Font.PLAIN, 11));//设置y轴的字体类型，防止中文乱码
        plot.getDomainAxis().setTickLabelFont(new Font("sans-serif", Font.PLAIN, 11));//设置x轴的值的字体类型，防止中文乱码
        plot.setBackgroundPaint(new Color(0xEE, 0xEE, 0xFF));//设定图表数据显示部分背景色
        plot.setDomainAxisLocation(AxisLocation.BOTTOM_OR_RIGHT);//设置X轴的显示位置
        
        BarRenderer renderer1= (BarRenderer)plot.getRenderer();//获取renderer
        renderer1.setBaseItemURLGenerator(new StandardCategoryURLGenerator("index.action"));//设定链接
        
        //设置各个柱形的间隔
        int k = dataset1.getColumnCount();
        if (k == 1) {  
            plot.getDomainAxis().setLowerMargin(0.26); 
            plot.getDomainAxis().setUpperMargin(0.66);
        } else if (k < 6) { 
            double margin = (1.0 - k * 0.08) / 3; 
            plot.getDomainAxis().setLowerMargin(margin); 
            plot.getDomainAxis().setUpperMargin(margin); 
            // domainAxis.setCategoryMargin(0.1); 
            renderer1.setItemMargin(margin);
        } else { 
            renderer1.setItemMargin(0.1);
        }
        
        //设置颜色
        GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, new Color(172, 255, 255),0.0F, 0.0F, new Color(86, 255, 255)); //设定特定颜色
        GradientPaint gradientpaint1 = new GradientPaint(0.0F, 0.0F, new Color(154, 255, 154),0.0F, 0.0F, Color.green);
        GradientPaint gradientpaint2 = new GradientPaint(0.0F, 0.0F, new Color(255, 168, 255),0.0F, 0.0F, new Color(255, 86, 255));
        renderer1.setSeriesPaint(0, gradientpaint); //给series1 Bar设定上面定义的颜色
        renderer1.setSeriesPaint(1, gradientpaint1); //给series2 Bar 设定上面定义的颜色
        renderer1.setSeriesPaint(2, gradientpaint2); //给series3 Bar 设定上面定义的颜色
        
        final CategoryDataset dataset2 = createDataset2();//创建数据集
        plot.setDataset(1, dataset2);//设置数据
        plot.mapDatasetToRangeAxis(1, 1);//将绘图数据集映射到附加轴上
        final CategoryAxis domainAxis = plot.getDomainAxis();//获取横坐标
        domainAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);//设置 横坐标 垂直角度
        final ValueAxis axis2 = new NumberAxis("王明超Secondary");// 创建附加轴对象
        plot.setRangeAxis(1, axis2);//把附加轴添加到绘图区

        final LineAndShapeRenderer renderer2 = new LineAndShapeRenderer();//创建renderer
        renderer2.setSeriesPaint(0, Color.red);//设置颜色
        renderer2.setSeriesPaint(1, Color.blue);//设置颜色
        renderer2.setToolTipGenerator(new StandardCategoryToolTipGenerator());//设置tooltip
        renderer2.setBaseItemURLGenerator(new StandardCategoryURLGenerator("barview.action"));//设定链接
        plot.setRenderer(1, renderer2);
     // change the rendering order so the primary dataset appears "behind" the other datasets...
        plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
        
        request.setAttribute("chart", chart);
        request.setAttribute("width", width);
        request.setAttribute("height", height);
        
        return "dualAxisChart";
    }
    
    private CategoryDataset createDataset1() {

        // row keys...
        final String series1 = "First王";
        final String series2 = "Second";
        final String series3 = "Third";

        // column keys...
        final String category1 = "Category王 1";
        final String category2 = "Category 2";
        final String category3 = "Category 3";
        final String category4 = "Category 4";
        final String category5 = "Category 5";
        final String category6 = "Category 6";
        final String category7 = "Category 7";
        final String category8 = "Category 8";

        // create the dataset...
        final DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        dataset.addValue(1.0, series1, category1);
        dataset.addValue(4.0, series1, category2);
        dataset.addValue(3.0, series1, category3);
        dataset.addValue(5.0, series1, category4);
        dataset.addValue(5.0, series1, category5);
        dataset.addValue(7.0, series1, category6);
        dataset.addValue(7.0, series1, category7);
        dataset.addValue(8.0, series1, category8);

        dataset.addValue(5.0, series2, category1);
        dataset.addValue(7.0, series2, category2);
        dataset.addValue(6.0, series2, category3);
        dataset.addValue(8.0, series2, category4);
        dataset.addValue(4.0, series2, category5);
        dataset.addValue(4.0, series2, category6);
        dataset.addValue(2.0, series2, category7);
        dataset.addValue(1.0, series2, category8);

        dataset.addValue(4.0, series3, category1);
        dataset.addValue(3.0, series3, category2);
        dataset.addValue(2.0, series3, category3);
        dataset.addValue(3.0, series3, category4);
        dataset.addValue(6.0, series3, category5);
        dataset.addValue(3.0, series3, category6);
        dataset.addValue(4.0, series3, category7);
        dataset.addValue(3.0, series3, category8);

        
        return dataset;

    }

    /**
     * Creates a sample dataset.
     *
     * @return  The dataset.
     */
    private CategoryDataset createDataset2() {

        // row keys...
        final String series1 = "Fourth";
        final String series2 = "Five";

        // column keys...
        final String category1 = "Category 1";
        final String category2 = "Category 2";
        final String category3 = "Category 3";
        final String category4 = "Category 4";
        final String category5 = "Category 5";
        final String category6 = "Category 6";
        final String category7 = "Category 7";
        final String category8 = "Category 8";

        // create the dataset...
        final DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        dataset.addValue(15.0, series1, category1);
        dataset.addValue(24.0, series1, category2);
        dataset.addValue(31.0, series1, category3);
        dataset.addValue(25.0, series1, category4);
        dataset.addValue(56.0, series1, category5);
        dataset.addValue(37.0, series1, category6);
        dataset.addValue(77.0, series1, category7);
        dataset.addValue(18.0, series1, category8);
        
        dataset.addValue(20.0, series2, category1);
        dataset.addValue(10.0, series2, category2);
        dataset.addValue(40.0, series2, category3);
        dataset.addValue(60.0, series2, category4);
        dataset.addValue(30.0, series2, category5);
        dataset.addValue(39.0, series2, category6);
        dataset.addValue(28.0, series2, category7);
        dataset.addValue(41.0, series2, category8);
        
        

        return dataset;

    }
    

    public void setSession(Map<String, Object> session) {
        this.session = session;
    }
    public void setServletRequest(HttpServletRequest request) {
        this.request = request;
    }
    public void setServletResponse(HttpServletResponse response) {
        this.response = response;
       
    }

    public JFreeChart getChart() {
        return chart;
    }

    public void setChart(JFreeChart chart) {
        this.chart = chart;
    }

    public int getWidth() {
        return width;
    }

    public void setWidth(int width) {
        this.width = width;
    }

    public int getHeight() {
        return height;
    }

    public void setHeight(int height) {
        this.height = height;
    }


}

jsp:

<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@ page contentType="text/html;charset=GBK"%>
<%@ page import="org.jfree.data.general.DefaultPieDataset"%>
<%@ page import="org.jfree.chart.*"%>
<%@ page import="org.jfree.chart.plot.*"%>
<%@ page import="org.jfree.chart.servlet.ServletUtilities"%>
<%@ page import="org.jfree.chart.urls.StandardPieURLGenerator"%>
<%@ page import="org.jfree.chart.entity.StandardEntityCollection"%>
<%@ page import="java.io.*"%>
<html>
<HEAD>
<META http-equiv=Content-Type content="text/html; charset=GBK">
<TITLE>[e-mail]</TITLE>
</HEAD>
<BODY>
<%
JFreeChart chart = (JFreeChart)request.getAttribute("chart");
int width = Integer.parseInt(request.getAttribute("width").toString());
int height = Integer.parseInt(request.getAttribute("height").toString());
StandardEntityCollection sec = new StandardEntityCollection();
ChartRenderingInfo info = new ChartRenderingInfo(sec);

PrintWriter w = new PrintWriter(out);//输出MAP信息
//500是图片长度，300是图片高度
String filename = ServletUtilities.saveChartAsPNG(chart, width, height, info, session);
ChartUtilities.writeImageMap(w, "map0", info, false);

String graphURL = request.getContextPath() + "/servletDisplayChart?filename=" + filename;

%>

<P ALIGN="CENTER">
<img src="<%= graphURL %>" width=<%=width %> height=<%=height %> border=0 usemap="#map0">
</P>
</BODY>
</html>