s2sh框架
热点生成方法:
- Java code
public static String getFileName(HttpSession session,int h,int w,JFreeChart chart) throws IOException{ // HttpServletResponse response = ServletActionContext.getResponse(); StandardEntityCollection sec = new StandardEntityCollection(); ChartRenderingInfo info = new ChartRenderingInfo(sec); response.setContentType("text/html"); PrintWriter write1 = response.getWriter(); String filename=ServletUtilities.saveChartAsPNG(chart, w, h,info, session); ChartUtilities.writeImageMap(write1, filename, info, true); write1.flush(); System.out.println("标记下"); System.out.println(info); return filename; }
action方法:
- Java code
public String createDataset() throws IOException{ System.out.println("进入createDataset方法"); int cid=Integer.parseInt(request.getParameter("cid")); System.out.println(cid); List<Pouringgirder1> list=this.prg1Biz.findPouringgirder1ByHql(cid); System.out.println(list.size()); DefaultPieDataset dataset=new DefaultPieDataset(); for(int i=0;i<list.size();i++){ dataset.setValue(list.get(i).getPgrId().toString(),list.get(i).getEvaluation()); } JFreeChart chart=JChartUtil.createPieChart2D("评价", dataset); String filename=JChartUtil.getFileName(request.getSession(), 200, 300, chart); String graphURL = request.getContextPath()+ "/servletDisplayChart?filename=" + filename; request.setAttribute("filename", filename); request.setAttribute("graphURL", graphURL); return "succ"; }jsp代码:
- Java code
<img src="${request.graphURL }" border=0 usemap="#${request.filename }"/>页面的class代码：
- Java code
<map id="jfreechart-22399.png" name="jfreechart-22399.png"><area shape="poly" coords="173,152,156,157,139,156,123,151,109,141,98,127,92,111,91,94,95,77,104,62,117,50,132,43,150,40,150,98,150,98" onMouseOver="return overlib('3: (85, 57%)');" onMouseOut="return nd();" nohref="nohref"/><area shape="poly" coords="150,40,160,41,169,43,178,47,186,53,193,60,199,68,204,77,207,86,208,96,207,106,205,116,202,125,196,133,190,141,182,147,173,152,150,98,150,98" onMouseOver="return overlib('2: (65, 43%)');" onMouseOut="return nd();" nohref="nohref"/></map><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>center4</title><link rel="stylesheet" href="../../css/c.css" type="text/css"></link></head><body onload="doshow(0)" > <div class="all"> <div class="right"> <div class="chart"> chart<br/> <img src="/suomeng1/servletDisplayChart?filename=jfreechart-22399.png" border=0 usemap="#jfreechart-22399.png"/> </div> </div> </div></body></html>在class代码中，map信息跑到了页面头部，热点信息不显示,鼠标停留无反应！
求解决办法!
------解决方案--------------------
没整过jfreechat 一直用chartDirector
------解决方案--------------------
这样看不出啥效果啊，建议去找个已经实现功能了的例子先参考一下。