代码如下
DefaultCategoryDataset linedataset = new DefaultCategoryDataset();
// 各曲线名称
String series1 = "订单量与时间";
String series2 = "发生金额与时间";
// DefaultCategoryDataset dataset = new DefaultCategoryDataset();
while(rs.next()){
// dataset.addValue(rs.getInt(2),rs.getDate(1)," ");
linedataset.addValue(rs.getInt(2), series1, rs.getDate(1));
linedataset.addValue(rs.getInt(3), series2, rs.getDate(1));
num=num+rs.getInt(2);
money=money+rs.getFloat(3);
%>
<tr>
<td width=45% align="center"><%out.print(rs.getDate(1));%></td>
<td width=30% align="center"><%out.print(rs.getInt(2));%></td>
<td width=30% align="center"><%out.print(rs.getFloat(3));%></td>
</tr>
<%
}
//定义图表对象
JFreeChart chart = ChartFactory.createLineChart("","","",linedataset,PlotOrientation.VERTICAL,false,false,false);
CategoryPlot plot = chart.getCategoryPlot();
/*字体乱码异常解决代码*/
chart.getTitle().setFont(new Font("宋体", Font.BOLD, 15));
chart.getLegend().setItemFont(new Font("黑体", Font.BOLD, 15));
CategoryAxis domainAxis = plot.getDomainAxis();
/*------设置X轴坐标上的文字-----------*/
domainAxis.setTickLabelFont(new Font("黑体", Font.PLAIN, 11));
/*------设置X轴的标题文字------------*/
domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 12));
NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();
/*------设置Y轴坐标上的文字-----------*/
numberaxis.setTickLabelFont(new Font("黑体", Font.PLAIN, 12));
/*------设置Y轴的标题文字------------*/
numberaxis.setLabelFont(new Font("黑体", Font.PLAIN, 12));
/*字体乱码异常解决代码*/
// 各种属性设置...
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero(true);
rangeAxis.setUpperMargin(0.20);
rangeAxis.setLabelAngle(Math.PI / 2.0);
//
String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, null, session);
String graphURL = request.getContextPath() + "/DisplayChart?filename=" + filename;
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 113 in the jsp file: /dingdanjieguo.jsp
The method createLineChart(String, String, String, CategoryDataset, PlotOrientation, boolean, boolean, boolean) in the type ChartFactory is not applicable for the arguments (String, String, String, DefaultCategoryDataset, PlotOrientation, boolean, boolean, boolean)
110: <%
111: }
112: //瀹氫箟鍥捐〃瀵硅薄
113: JFreeChart chart = ChartFactory.createLineChart("","","",linedataset,PlotOrientation.VERTICAL,false,false,false);
114: CategoryPlot plot = chart.getCategoryPlot();
115: /*瀛椾綋涔辩爜寮傚父瑙ｅ喅浠ｇ爜*/
116: chart.getTitle().setFont(new Font("瀹嬩綋", Font.BOLD, 15));
An error occurred at line: 117 in the jsp file: /dingdanjieguo.jsp
The method setItemFont(Font) is undefined for the type Legend
114: CategoryPlot plot = chart.getCategoryPlot();
115: /*瀛椾綋涔辩爜寮傚父瑙ｅ喅浠ｇ爜*/
116: chart.getTitle().setFont(new Font("瀹嬩綋", Font.BOLD, 15));
117: chart.getLegend().setItemFont(new Font("榛戜綋", Font.BOLD, 15));
118: CategoryAxis domainAxis = plot.getDomainAxis();
119: /*------璁剧疆X杞村潗鏍囦笂鐨勬枃瀛�----------*/
120: domainAxis.setTickLabelFont(new Font("榛戜綋", Font.PLAIN, 11));
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:308)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:273)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
是你的Jasper Report的编译不通过，检查一个report的内容与格式，还有数据源等。