关于曲线图 我现在想在页面显示 像windows 任务管理器中显示CPU使用率那样走势图或曲线图的效果 时时刻刻监测后台传过来的数据 有沒有什么控件能做到这样的效果啊?如果哪位朋友 有这样的demo的话 麻烦发我邮箱给我看看 感激不尽 [email protected] 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <%@ page contentType="text/html;charset=GBK"%><%@ page import = "org.jfree.chart.ChartFactory, org.jfree.chart.JFreeChart, org.jfree.chart.servlet.ServletUtilities, org.jfree.chart.title.TextTitle, org.jfree.data.time.TimeSeries, org.jfree.data.time.Month, org.jfree.data.time.TimeSeriesCollection, java.awt.Font"%><%//流量统计时间线TimeSeries timeSeries = new TimeSeries("xx网站流量统计", Month.class);//时间曲线数据集合TimeSeriesCollection lineDataset = new TimeSeriesCollection();//构造数据集合timeSeries.add(new Month(1, 2006), 19300);timeSeries.add(new Month(2, 2006), 39390);timeSeries.add(new Month(3, 2006), 33990);timeSeries.add(new Month(4, 2006), 45533);timeSeries.add(new Month(5, 2006), 38799);timeSeries.add(new Month(6, 2006), 41000);timeSeries.add(new Month(7, 2006), 37899);timeSeries.add(new Month(8, 2006), 42999);timeSeries.add(new Month(9, 2006), 50383);timeSeries.add(new Month(10, 2006), 87666);timeSeries.add(new Month(11, 2006), 57897);timeSeries.add(new Month(12, 2006), 69399);lineDataset.addSeries(timeSeries);JFreeChart chart = ChartFactory.createTimeSeriesChart("流量统计时间线", "月份", "访问量", lineDataset, true, true, true);//设置子标题TextTitle subtitle = new TextTitle("2006年度", new Font("黑体", Font.BOLD, 12));chart.addSubtitle(subtitle);//设置主标题chart.setTitle(new TextTitle("xx网站流量统计", new Font("隶书", Font.ITALIC, 15)));chart.setAntiAlias(true);String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, null, session);String graphURL = request.getContextPath() + "/DisplayChart?filename=" + filename;%><img src="<%= graphURL %>" width="500" height="300" border="0" usemap="#<%= filename %>"> 一个菜鸟关于Java参数传递的一个问题 请教一下,怎么把符合XML格式的String类型转换成JDOM的Document?? 跪求...... ###请教高手一个JDK中的棘手问题,先谢啦### 掌握了java的基本语法之后,怎样继续学下去? JScrollpane滚动条和JTree显示问题 怎样产生一随机数,请教 哪有for ms sqlserver的java驱动?好想得到他呀 JB中用了个JWindow,向里面加了panel和label,但为什么显示不了? 请问怎么得到一个颜色的反色和透明颜色 关于垃圾回收的一个题目 50分问题
<%@ page import = "org.jfree.chart.ChartFactory,
org.jfree.chart.JFreeChart,
org.jfree.chart.servlet.ServletUtilities,
org.jfree.chart.title.TextTitle,
org.jfree.data.time.TimeSeries,
org.jfree.data.time.Month,
org.jfree.data.time.TimeSeriesCollection,
java.awt.Font"%>
<%
//流量统计时间线
TimeSeries timeSeries = new TimeSeries("xx网站流量统计", Month.class);
//时间曲线数据集合
TimeSeriesCollection lineDataset = new TimeSeriesCollection();//构造数据集合
timeSeries.add(new Month(1, 2006), 19300);
timeSeries.add(new Month(2, 2006), 39390);
timeSeries.add(new Month(3, 2006), 33990);
timeSeries.add(new Month(4, 2006), 45533);
timeSeries.add(new Month(5, 2006), 38799);
timeSeries.add(new Month(6, 2006), 41000);
timeSeries.add(new Month(7, 2006), 37899);
timeSeries.add(new Month(8, 2006), 42999);
timeSeries.add(new Month(9, 2006), 50383);
timeSeries.add(new Month(10, 2006), 87666);
timeSeries.add(new Month(11, 2006), 57897);
timeSeries.add(new Month(12, 2006), 69399);lineDataset.addSeries(timeSeries);
JFreeChart chart = ChartFactory.createTimeSeriesChart("流量统计时间线", "月份", "访问量", lineDataset, true, true, true);//设置子标题
TextTitle subtitle = new TextTitle("2006年度", new Font("黑体", Font.BOLD, 12));
chart.addSubtitle(subtitle);//设置主标题
chart.setTitle(new TextTitle("xx网站流量统计", new Font("隶书", Font.ITALIC, 15)));
chart.setAntiAlias(true);String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, null, session);
String graphURL = request.getContextPath() + "/DisplayChart?filename=" + filename;
%>
<img src="<%= graphURL %>" width="500" height="300" border="0" usemap="#<%= filename %>">