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Java报表之JFreeChart-第二讲

2016-09-26 19:15 375 查看

1.   CategoryDataset分类数据引入

第一步：导入jfreeChart的jar包



第二步：在web.xml配置jfreechart

<span style="font-family:FangSong_GB2312;font-size:18px;"><?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>JFreeChartDemo</display-name>
<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-mapping>
<servlet-name>DisplayChart</servlet-name>
<url-pattern>/DisplayChart</url-pattern>
</servlet-mapping>
</web-app>
</span>

第三步：新建一个JFreeChart3的类创建代码如下：

<span style="font-family:FangSong_GB2312;font-size:18px;">package com.xp.jfreechart.bar;

import javax.servlet.http.HttpSession;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;

public class BarChart3 {
public static String genBarChart(HttpSession session) throws Exception {
//创建一个二维数组来存放数据
double [][]data=new double[][]{{1320},{720},{830},{400}};
String []rowKeys={"苹果","香蕉","橘子","梨子"};//定义行的值
String []columnKeys={"深圳"};
CategoryDataset dataset=DatasetUtilities.createCategoryDataset(rowKeys,columnKeys ,data);
JFreeChart chart=ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset,
PlotOrientation.VERTICAL, true, true, true);
String fileName=ServletUtilities.saveChartAsPNG(chart, 700, 500, null,session);
return fileName;
}
}
</span>


第四步：新建一个jsp页面用来展示网页版的饼状图
<span style="font-family:FangSong_GB2312;font-size:18px;"><%@page import="com.xp.jfreechart.bar.BarChart3"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
String fileName=BarChart3.genBarChart(session);
System.out.println(fileName);
%>
<img src="DisplayChart?filename=<%=fileName %>" width="700" height="500" />
</body>
</html>
</span>

第五步：效果图如下



2.利用JFreeChart
创建按颜色分类并且按地区分类水果销售报表

package com.xp.jfreechart.bar;

import javax.servlet.http.HttpSession;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;

public class BarChart4 {
public static String genBarChart(HttpSession session) throws Exception {
double [][]data=new double[][]{{1320,1110,1123,321},{720,210,1423,1321},{830,1310,123,521},{400,1110,623,321}};
String []rowKeys={"苹果","香蕉","橘子","梨子"};
String []columnKeys={"深圳","北京","上海","南京"};
CategoryDataset dataset=DatasetUtilities.createCategoryDataset(rowKeys,columnKeys ,data);
JFreeChart chart=ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset,
PlotOrientation.VERTICAL, true, true, true);
String fileName=ServletUtilities.saveChartAsPNG(chart, 700, 500, null,session);
return fileName;
}
}
效果图如下：



3.
利用
JFreeChart
创建自定义
3D
柱状报表

CategoryPlot指定标题字的方向以及字体的设定
package com.xp.jfreechart.bar;

import java.awt.Color;

import javax.servlet.http.HttpSession;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.TextAnchor;

public class BarChart5 {

public static String genBarChart(HttpSession session) throws Exception {
double [][]data=new double[][]{{1320,1110,1123,321},{720,210,1423,1321},{830,1310,123,521},{400,1110,623,321}};
String []rowKeys={"苹果","香蕉","橘子","梨子"};
String []columnKeys={"深圳","北京","上海","南京"};
CategoryDataset dataset=DatasetUtilities.createCategoryDataset(rowKeys,columnKeys ,data);
JFreeChart chart=ChartFactory.createBarChart3D("水果销售统计图", "水果", "销售", dataset,
PlotOrientation.VERTICAL, true, true, true);

CategoryPlot plot=chart.getCategoryPlot();
// 设置网格背景颜色
plot.setBackgroundPaint(Color.white);
// 设置网格竖线颜色
plot.setDomainGridlinePaint(Color.pink);
// 设置网格横线颜色
plot.setRangeGridlinePaint(Color.pink);

// 显示每个柱的数值，并修改该数值的字体属性
BarRenderer3D renderer=new BarRenderer3D();
renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
renderer.setBaseItemLabelsVisible(true);

renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_LEFT));
renderer.setItemLabelAnchorOffset(10D);

// 设置平行柱的之间距离
renderer.setItemMargin(0.4);

plot.setRenderer(renderer);

String fileName=ServletUtilities.saveChartAsPNG(chart, 700, 500, null,session);
return fileName;
}
}


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标签：  jfreechart jsp web.xml 报表
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