有关Jfree 的问题...高分在线等!!!!!

hippowang 2004-10-10 04:52:49

<%@ page import="javax.naming.Context" contentType="text/html; charset=gb2312"%>
<%@ page import="org.jfree.chart.ChartFactory"%>
<%@ page import="org.jfree.chart.ChartUtilities"%>
<%@ page import="org.jfree.chart.JFreeChart"%>
<%@ page import="org.jfree.chart.TextTitle"%>
<%@ page import="org.jfree.chart.axis.NumberAxis"%>
<%@ page import="org.jfree.chart.plot.CategoryPlot"%>
<%@ page import="org.jfree.chart.plot.PiePlot"%>
<%@ page import="org.jfree.data.time.Day"%>
<%@ page import="org.jfree.data.time.Minute"%>
<%@ page import="org.jfree.data.time.Month"%>
<%@ page import="org.jfree.data.DefaultCategoryDataset"%>
<%@ page import="org.jfree.data.DefaultPieDataset"%>
<%@ page import="org.jfree.data.time.TimeSeries"%>
<%@ page import="org.jfree.data.time.TimeSeriesCollection"%>
<%@ page import="org.jfree.data.time.TimeSeriesDataItem"%>
<%@ page import="org.jfree.data.time.TimeSeriesDataItem"%>
<%@ page import="javax.sql.*"%>
<%@ page import="java.awt.GradientPaint"%>
<%@ page import="java.awt.Color"%>
<%@ page import="java.awt.Font"%>
<%@ page import="java.lang.*"%>
<%@ page import="java.text.*"%>
<%@ page import="java.io.*"%>
<%@ page import="java.net.URL"%>
<%@ page import="java.util.*"%>
<%@ page import="java.math.*"%>
<HTML>
<%
// create a default chart based on some sample data...
//曲线图标题
String title = "趋势分析";
//曲线图X轴提示
String domain = "月份走势";
//曲线图Y轴提示
String range = "应收余额";
//曲线图自标题
String subtitleStr = "2003财年分析";
//创建时间数据源
//每一个TimeSeries在图上是一条曲线
TimeSeries ca = new TimeSeries("用友");
for (int i = 1999; i < 2005; i++) {
for (int mon = 0; mon < 12; mon++) {
//ca.add(new Month(mon + 1, i), new Double(500 + Math.random() * 100));
//TimeSeriesDataPair是一个时间点的数值体现
ca.add(
new TimeSeriesDataItem(
new Day(1, mon + 1, i),
new Double(500 + Math.random() * 100)));
}
}

TimeSeries ibm = new TimeSeries("金碟");
for (int i = 1999; i < 2005; i++) {
for (int mon = 0; mon < 12; mon++) {
//ibm.add(new Month(mon+1,i),new Double(400-Math.random()*100));
ibm.add(
new TimeSeriesDataItem(
new Day(1, mon + 1, i),
new Double(400 - Math.random() * 100)));
}
}

//时间曲线数据集合

TimeSeriesCollection dataset = new TimeSeriesCollection();
dataset.addSeries(ca);
dataset.addSeries(ibm);

//时间曲线元素
JFreeChart chart =
ChartFactory.createTimeSeriesChart(
title,
domain,
range,
dataset,
false,
true,
false);
// then customise it a little...
TextTitle subtitle =
new TextTitle(subtitleStr, new Font("黑体", Font.BOLD, 12));
chart.addSubtitle(subtitle);
chart.setTitle(new TextTitle(title, new Font("隶书", Font.ITALIC, 15)));
//pie.setSeriesLabelFont(new Font("黑体", Font.BOLD, 15));
chart.setBackgroundPaint(
new GradientPaint(0, 0, Color.white, 0, 1000, Color.blue));
//sysout
//输出文件到指定目录
//String rfname = MathUtil.getRoundCode(22) + ".jpeg";
String rfname= "12.jpeg";
String fileName = "/home/usr/" + rfname;
try {
//for
//System.out.println();
ChartUtilities.saveChartAsJPEG(new File(fileName), 100, chart, 600, 600);
// log.info("....Create image File:" + fileName);
} catch (IOException exz) {
System.out.print("....Cant't Create image File");
}

%>

<img src="/home/usr/12.jpeg"/>

</html>

程序是这样的...我在TOMCAT下面运行...浏览器下面的进度槽走的很慢,页面也没有什么反应..很久都没有反应,后台也没有什么错误,不知道什么错误,请大家指点一下,....
两个包我都放在LIB下面了

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kingpeak 2004-10-10

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我用你的代码可以执行
我的环境是
jdk1.4.2.05
tomcat5.0.16
jfreechart-0.9.13

你在试试吧

hippowang 2004-10-10

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我看了...配过了...

kingpeak 2004-10-10

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/servlet/DisplayChart
在web.xml中有没有配

pmaster 2004-10-10

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帮顶

hippowang 2004-10-10

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不好意思..贴错程序了....应该是下面的这个程序

<%@ page contentType="text/html;charset=GBK"%>
<%@ page import="org.jfree.data.DefaultPieDataset"%>
<%@ page import="org.jfree.chart.JFreeChart"%>
<%@ page import="org.jfree.chart.plot.PiePlot"%>
<%@ page import="org.jfree.chart.ChartRenderingInfo"%>
<%@ page import="org.jfree.chart.servlet.ServletUtilities"%>
<%@ page import="org.jfree.chart.urls.StandardPieURLGenerator"%>
<%@ page import="org.jfree.chart.entity.StandardEntityCollection"%>
<%

DefaultPieDataset data = new DefaultPieDataset();
data.setValue("六月",500);
data.setValue("七月",580);
data.setValue("八月",828);

PiePlot plot = new PiePlot(data);

JFreeChart chart = new JFreeChart("",JFreeChart.DEFAULT_TITLE_FONT, plot, true);
chart.setBackgroundPaint(java.awt.Color.white);//可选，设置图片背景色
chart.setTitle("www.SenTom.net 网站访问统计表");//可选，设置图片标题

ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
//500是图片长度，300是图片高度

String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, info, session);
String graphURL = request.getContextPath() + "/servlet/DisplayChart?filename=" + filename;

%>
<HTML>
<HEAD>
<TITLE>www.sentom.net</TITLE>
</HEAD>
<BODY>
<P ALIGN="CENTER">
<img src="<%= graphURL %>" width=500 height=300 border=0 usemap="#<%= filename

%>">
</P>
</BODY>
</HTML>