jFreeChart问题100分

jFreeChart是我见过的参数最多的开元项目

有没有详细介绍jfreechart的使用的
我要用做毕业设计的画图

<%@ page language="java" contentType="image/png;charset=GB2312"
import="java.awt.*"
import="org.jfree.chart.*"
import="org.jfree.chart.servlet.*"
import="org.jfree.chart.plot.*"
import="org.jfree.chart.renderer.*"
import="org.jfree.chart.entity.*"
import="org.jfree.chart.title.*"
import="org.jfree.chart.axis.*"
import="org.jfree.chart.renderer.category.LineAndShapeRenderer"
import="org.jfree.data.*"
import="org.jfree.data.general.*"
import="org.jfree.data.category.*"
import="org.jfree.ui.*"
import="org.jfree.util.*"
%>
<%!

String bookTitle[] = {"Python", "JAVA", "C#", "Perl", "PHP"};
String category[] = {"第1周", "第2周", "第3周", "第4周" };
double bookSales;
String chartTitle = "JFreeChart实例11: 自定义线段图"; // 创建数据集
public CategoryDataset createDataset()
{
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        for (int i=0; i < bookTitle.length; i++)
{
for (int j=0; j < category.length; j++ )
{
bookSales = 1 +  (Math.random() * 100);
dataset.addValue(bookSales, bookTitle[i], category[j]);
}
}
        return dataset;
    } public JFreeChart createChart(CategoryDataset dataset)
{
// 创建图表对象
JFreeChart chart = ChartFactory.createLineChart
(
chartTitle, // 图表标题
"销售时间:2005年2月", // 坐标标题
"销售量",                  // 坐标标题
dataset,                  // 定义绘制数据
PlotOrientation.VERTICAL, // 直方图的方向
true,                     // 定义图表是否包含图例
true,                     // 定义图表是否包含提示
false                     // 定义图表是否包含URL
);
return chart;
}
%>
<%
// 创建一个 500X375 的图像
int width=500, height=375;         CategoryDataset dataset = createDataset();
        JFreeChart chart = createChart(dataset);
        // 开始自定义图表绘制的相关属性

        // 设置图表的背景颜色
        chart.setBackgroundPaint(new Color(205, 241, 197)); // 自定义图表的标题的字体和颜色
TextTitle title = chart.getTitle();
title.setFont(new Font("汉真广标", Font.BOLD, 25));        // 获得图表对象的引用，用于设置更多的自定义绘制属性
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        GradientPaint bg = new GradientPaint(0, 50, new Color(248, 253, 255),
0, 250, new Color(205, 237, 252));
        plot.setBackgroundPaint(bg);
        plot.setDomainGridlinePaint(Color.BLACK);
        plot.setDomainGridlinesVisible(true);
        plot.setRangeGridlinePaint(Color.RED);

        // 设置横轴标题的字体
CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setLabelFont(new Font("黑体", Font.BOLD, 15));

        // 设置纵轴标题文字的字体及其旋转方向
ValueAxis rangeAxis = plot.getRangeAxis();
rangeAxis.setLabelFont(new Font("黑体", Font.BOLD, 15));
rangeAxis.setLabelAngle(Math.PI/2);

// 自定义图例的显示风格
StandardLegend legend = (StandardLegend) chart.getLegend();
        legend.setDisplaySeriesShapes(true);
        legend.setShapeScaleX(1.5);
        legend.setShapeScaleY(1.5);
        legend.setDisplaySeriesLines(true);        // 获取渲染对象
        LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();

// 自定义线段的绘制颜色
Color color[] = new Color[bookTitle.length];
color[0] = new Color(99,99,0);
color[1] = new Color(255,169,66);
color[2] = new Color(33,255, 66);
color[3] = new Color(33,0,255);
color[4] = new Color(255,0,66);
for (int i = 0; i < color.length; i++)
{
renderer.setSeriesPaint(i, color[i]);
} // 自定义线段的绘制风格
BasicStroke bs ;
for (int i = 0; i < bookTitle.length; i++)
{
float dashes[] = {10.0f};
bs = new BasicStroke(2.0f, BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND, 10.f, dashes, 0.0f);
if (i % 2 != 0)
renderer.setSeriesStroke(i, bs);
else
renderer.setSeriesStroke(i, new BasicStroke(2.0f));
}

// 结束自定义图表绘制的相关属性

ChartRenderingInfo info =
   new ChartRenderingInfo(new StandardEntityCollection()); // 设置图片生成格式
        String fileName =
   ServletUtilities.saveChartAsPNG(chart, width, height, info, session);

        // 设置图片生成路径
String graphURL =
   request.getContextPath() + "/servlet/DisplayChart?filename=" + fileName; %>
<HTML>
<HEAD>
       <TITLE><%=chartTitle%></TITLE>
</HEAD>
<BODY>
       <P ALIGN="CENTER">
       <img src="<%=graphURL %>" border="1" >
       </P>
</BODY>
</HTML>

<%@ page language="java" contentType="image/png;charset=GB2312"
import="java.awt.*"
import="java.text.*"
import="org.jfree.chart.*"
import="org.jfree.chart.axis.*"
import="org.jfree.chart.servlet.*"
import="org.jfree.chart.plot.*"
import="org.jfree.chart.renderer.*"
import="org.jfree.chart.axis.*"
import="org.jfree.chart.entity.*"
import="org.jfree.chart.labels.*"
import="org.jfree.chart.title.*"
import="org.jfree.chart.renderer.xy.*"
import="org.jfree.data.*"
import="org.jfree.data.xy.*"
import="org.jfree.data.time.*"
import="org.jfree.ui.*"
import="org.jfree.util.*"
%>
<%!
String bookTitle[] = {"Python", "JAVA"};
String chartTitle = "计算机编程类图书2004年月销售量时序统计图"; // 创建数据集
public XYDataset createDataset()
{
TimeSeriesCollection dataset = new TimeSeriesCollection();
TimeSeries ts[] = new TimeSeries[bookTitle.length];
        int bookSales = 0;
for (int i =0; i< bookTitle.length; i++)
{
ts[i] = new TimeSeries(bookTitle[i], Month.class);
for (int month = 1; month <= 12; month++)
{
bookSales = 70 + (int)(Math.random() * 100);
ts[i].add(new Month(month, 2004), bookSales);
}
dataset.addSeries(ts[i]);
}

        return dataset;
    } public JFreeChart createChart(XYDataset dataset)
{
// 创建图表对象
JFreeChart chart = ChartFactory.createTimeSeriesChart
(
chartTitle, // 图表标题
"统计时间",                // 坐标标题
"月销售量",                  // 坐标标题
dataset,                  // 定义绘制数据
true,                     // 定义图表是否包含图例
true,                     // 定义图表是否包含提示
false                     // 定义图表是否包含URL
);
return chart;
}
%>
<%
// 创建一个 500X375 的图像
int width=500, height=375;         XYDataset dataset = createDataset();
        JFreeChart chart = createChart(dataset);        // 开始自定义图表绘制的相关属性        // 设置整个图表的背景颜色
GradientPaint bgGP = new GradientPaint(0, 0, Color.LIGHT_GRAY,
  0, height, Color.WHITE, false);
        chart.setBackgroundPaint(bgGP);        // 设置图表对象的绘制属性
        XYPlot plot = chart.getXYPlot();

// 自定义图例
StandardLegend sl = (StandardLegend) chart.getLegend();
        sl.setDisplaySeriesShapes(true);        // 设置横轴上的时间刻度的显示格式
DateAxis domainAxis = new DateAxis("统计时段:2004年");
DateFormat df = new SimpleDateFormat("yyyy-MM");
        DateTickUnit unit = new DateTickUnit(DateTickUnit.MONTH, 1, df);
domainAxis.setTickUnit(unit);
domainAxis.setVerticalTickLabels(true);
plot.setDomainAxis(domainAxis);     StandardXYItemRenderer renderer =
(StandardXYItemRenderer) plot.getRenderer();
        renderer.setPlotShapes(true);
        renderer.setSeriesShapesFilled(0, Boolean.TRUE);
        renderer.setSeriesShapesFilled(1, Boolean.FALSE); // 结束自定义图表绘制的相关属性

ChartRenderingInfo info =
   new ChartRenderingInfo(new StandardEntityCollection()); // 设置图片生成格式
        String fileName =
   ServletUtilities.saveChartAsPNG(chart, width, height, info, session);

        // 设置图片生成路径
String graphURL =
   request.getContextPath() + "/servlet/DisplayChart?filename=" + fileName;
%>
<HTML>
<HEAD>
       <TITLE><%=chartTitle%></TITLE>
</HEAD>
<BODY>
       <P ALIGN="CENTER">
       <img src="<%=graphURL %>" border="1" >
       </P>
</BODY>
</HTML>

调试易

jFreeChart问题100分

解决方案 »