辠aultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(y轴,x轴,时光); dataset.addValue(y轴,x轴,时光); dataset.addValue(y轴,x轴,时光); String title =用户拜访统计; JFreeChart chart = ChartFactory.createBarChart3D(title, , 拜访人数, dataset, PlotOrientation.VERTICAL, true, false, false); String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, null, session); String graphURL = request.getContextPath() /servlet/DisplayChart吗filename= filename; % P ALIGN=left img src=%=graphURL % width=500 height=300 border=0 usemap=#%= filename % /P你换一个办法就行,这个好象是柱型图 查看原帖>>
满意请采纳