尝试在jsp页面中显示xy图时出错

时间:2013-04-24 07:13:18

标签: java mysql jsp servlets graph

嗨我有数据库表job_status有字段日期,时间和速度。我想在jsp页面上显示速度和时间之间的图表,但我收到错误,所以在这里发布问题。请帮助我

<%// required packages  %>
<%@ page import ="DB.*" %>
<%@ page import="java.awt.Image" %>
<%@ page import="java.awt.*"%>
<%@ page import="java.text.SimpleDateFormat"%>
<%@ page import="java.awt.BasicStroke"%>
<%@ page import ="org.jfree.ui.ApplicationFrame"%>
<%@ page import="java.io.*" %>
<%@ page import="java.io.File"%>
<%@ page import="org.jfree.chart.*" %>
<%@ page import="org.jfree.chart.axis.*" %>
<%@ page import="org.jfree.chart.entity.*" %>
<%@ page import="org.jfree.chart.labels.*" %>
<%@ page import="org.jfree.chart.plot.*" %>
<%@ page import="org.jfree.chart.renderer.category.*" %>
<%@ page import="org.jfree.chart.urls.*" %>
<%@ page import="org.jfree.data.category.*" %>
<%@ page import="org.jfree.data.general.*" %>
<%@ page import="org.jfree.data.time.Minute"%>
<%@ page import="org.jfree.data.time.Hour"%>
<%@ page import="org.jfree.data.time.TimeSeries"%>
<%@ page import="org.jfree.data.time.TimeSeriesCollection"%>
<%@ page import="org.jfree.data.xy.XYDataset"%>
<%@ page import="org.jfree.chart.plot.XYPlot"%>
<%@ page import="org.jfree.chart.renderer.xy.StandardXYItemRenderer"%>
<%@ page import="org.jfree.chart.renderer.xy.XYItemRenderer"%>
 <%@ page import=  "java.sql.Connection" %>
<%@ page import  ="java.sql.DriverManager" %>
<%@ page import = "java.sql.SQLException" %>
<%@ page import = "java.sql.PreparedStatement" %>
<%@ page import = "java.sql.ResultSet" %>
<%@ page import = "java.sql.Statement" %>
 <%@ page import=  "javax.servlet.*" %>
<%@ page import  ="javax.servlet.http.*" %>

<%@ page import="java.awt.image.BufferedImage"%>
<%
 try
 {
 File image = File.createTempFile("image", "tmp");

 //chart class instance
Fms fm = new Fms("Graph");

JFreeChart chart = fm.createChart(fm.dataset);
 ChartUtilities.saveChartAsPNG(image, chart, 500, 400);
//get input stream
 FileInputStream fileInStream = new FileInputStream(image);
//output stream foe returning chart as image
 OutputStream outStream = response.getOutputStream();
 long fileLength;
 byte[] byteStream;
 fileLength = image.length();
 byteStream = new byte[(int)fileLength];
//read chart image
 fileInStream.read(byteStream, 0, (int)fileLength);
//returns chart image whenever called
 response.setContentType("image/png");
 response.setContentLength((int)fileLength);
 response.setHeader("Cache-Control","no-store,no-cache, must-revalidate, post-check=0, pre-check=0");
 response.setHeader("Pragma", "no-cache");
 fileInStream.close();
 outStream.write(byteStream);
 outStream.flush();
 outStream.close();
 }
 catch (IOException e)
 {
 System.err.println("Problem occurred creating chart.");
 }
%>
<%! public class Fms extends ApplicationFrame {  
//Main class
   XYDataset dataset= null;
   public Fms(final String title) {
        super(title);
      dataset= createDataset();
        final JFreeChart chart = createChart(dataset);
        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));
        chartPanel.setMouseZoomable(true, false);
        setContentPane(chartPanel);
    }
//chart creation method
   JFreeChart createChart(final XYDataset dataset) {
        final JFreeChart chart = ChartFactory.createTimeSeriesChart(
            "Speed Chart",
            "Time",
            "Speed",
            dataset,
            true,
            true,
            false
        );
        chart.setBackgroundPaint(Color.white);
       final XYPlot plot = chart.getXYPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
        plot.setDomainCrosshairVisible(true);
        plot.setRangeCrosshairVisible(false);
        final XYItemRenderer renderer = plot.getRenderer();
        if (renderer instanceof StandardXYItemRenderer) {
            final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
            rr.setShapesFilled(true);
            renderer.setSeriesStroke(0, new BasicStroke(1.0f));
            renderer.setSeriesStroke(1, new BasicStroke(1.0f));
           }      
        final DateAxis axis = (DateAxis) plot.getDomainAxis();
        axis.setDateFormatOverride(new SimpleDateFormat("dd:MM"));
        try{
        final ChartRenderingInfo info = new ChartRenderingInfo
(new StandardEntityCollection());
final File file1 = new File("/barchart.png");
ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);
        }catch(Exception e){}
        return chart;
    }  
//data set generation method
    private XYDataset createDataset() {
        final TimeSeriesCollection dataset = new TimeSeriesCollection();
        dataset.setDomainIsPointsInTime(true);      
        final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);
         int str = 0;
         int i =0,j= 0 ;
         String str1 = null;
        try{         
            DataBaseConnection db= new DataBaseConnection();
      Connection con=db.connet();
      PreparedStatement st;  
      Statement stmt = con.createStatement();
      String query = "Select * from Job_Status";
      stmt.executeQuery(query);
       ResultSet rs = stmt.executeQuery(query);      
           while( rs.next() )
        {                
         str1= rs.getString("Time");
         String sa = str1.substring(11,13);
         String ha = str1.substring(14,16);
        str= rs.getInt("Speed");
        j=Integer.parseInt(sa);
        i=Integer.parseInt(ha);
        String date = rs.getString("Date");
        String y = date.substring(0,4);
         String m = date.substring(5,7);
          String d = date.substring(8,10);
         s1.add(new Minute(i, j, Integer.parseInt(d), Integer.parseInt(m), Integer.parseInt(y)), str);
          }
          }
          catch(Exception e)
          {            
          }
         System.out.println(str1.substring(11,13));
          System.out.println(str1.substring(14,16)+"\t"+str1);                
        dataset.addSeries(s1);  
        return dataset;
    }
    }
%>

错误是

HTTP Status 500 - Unable to compile class for JSP:

type Exception report

message Unable to compile class for JSP:

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: [19] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.ui.ApplicationFrame resolves to a package

An error occurred at line: [31] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.data.time.Minute resolves to a package

An error occurred at line: [32] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.data.time.Hour resolves to a package

An error occurred at line: [33] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.data.time.TimeSeries resolves to a package

An error occurred at line: [34] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.data.time.TimeSeriesCollection resolves to a package

An error occurred at line: [35] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.data.xy.XYDataset resolves to a package

An error occurred at line: [36] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.chart.plot.XYPlot resolves to a package

An error occurred at line: [37] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.chart.renderer.xy.StandardXYItemRenderer resolves to a package

An error occurred at line: [38] in the generated java file: [/home/sukanth/workspace1/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/work/Catalina/localhost/project1/org/apache/jsp/chart_jsp.java]
Only a type can be imported. org.jfree.chart.renderer.xy.XYItemRenderer resolves to a package

An error occurred at line: 73 in the jsp file: /chart.jsp
ApplicationFrame cannot be resolved to a type
70:  System.err.println("Problem occurred creating chart.");
71:  }
72: %>
73: <%! public class Fms extends ApplicationFrame {  
74: //Main class
75:    XYDataset dataset= null;
76:    public Fms(final String title) {


An error occurred at line: 75 in the jsp file: /chart.jsp
XYDataset cannot be resolved to a type
72: %>
73: <%! public class Fms extends ApplicationFrame {  
74: //Main class
75:    XYDataset dataset= null;
76:    public Fms(final String title) {
77:         super(title);
78:       dataset= createDataset();


An error occurred at line: 78 in the jsp file: /chart.jsp
dataset cannot be resolved to a variable
75:    XYDataset dataset= null;
76:    public Fms(final String title) {
77:         super(title);
78:       dataset= createDataset();
79:         final JFreeChart chart = createChart(dataset);
80:         final ChartPanel chartPanel = new ChartPanel(chart);
81:         chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));


An error occurred at line: 78 in the jsp file: /chart.jsp
The method createDataset() is undefined for the type chart_jsp.Fms
75:    XYDataset dataset= null;
76:    public Fms(final String title) {
77:         super(title);
78:       dataset= createDataset();
79:         final JFreeChart chart = createChart(dataset);
80:         final ChartPanel chartPanel = new ChartPanel(chart);
81:         chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));


An error occurred at line: 79 in the jsp file: /chart.jsp
JFreeChart cannot be resolved to a type
76:    public Fms(final String title) {
77:         super(title);
78:       dataset= createDataset();
79:         final JFreeChart chart = createChart(dataset);
80:         final ChartPanel chartPanel = new ChartPanel(chart);
81:         chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));
82:         chartPanel.setMouseZoomable(true, false);


An error occurred at line: 79 in the jsp file: /chart.jsp
dataset cannot be resolved to a variable
76:    public Fms(final String title) {
77:         super(title);
78:       dataset= createDataset();
79:         final JFreeChart chart = createChart(dataset);
80:         final ChartPanel chartPanel = new ChartPanel(chart);
81:         chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));
82:         chartPanel.setMouseZoomable(true, false);


An error occurred at line: 80 in the jsp file: /chart.jsp
ChartPanel cannot be resolved to a type
77:         super(title);
78:       dataset= createDataset();
79:         final JFreeChart chart = createChart(dataset);
80:         final ChartPanel chartPanel = new ChartPanel(chart);
81:         chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));
82:         chartPanel.setMouseZoomable(true, false);
83:         setContentPane(chartPanel);


An error occurred at line: 80 in the jsp file: /chart.jsp
ChartPanel cannot be resolved to a type
77:         super(title);
78:       dataset= createDataset();
79:         final JFreeChart chart = createChart(dataset);
80:         final ChartPanel chartPanel = new ChartPanel(chart);
81:         chartPanel.setPreferredSize(new java.awt.Dimension(700, 570));
82:         chartPanel.setMouseZoomable(true, false);
83:         setContentPane(chartPanel);


An error occurred at line: 86 in the jsp file: /chart.jsp
JFreeChart cannot be resolved to a type
83:         setContentPane(chartPanel);
84:     }
85: //chart creation method
86:    JFreeChart createChart(final XYDataset dataset) {
87:         final JFreeChart chart = ChartFactory.createTimeSeriesChart(
88:             "Speed Chart",
89:             "Time",


An error occurred at line: 86 in the jsp file: /chart.jsp
XYDataset cannot be resolved to a type
83:         setContentPane(chartPanel);
84:     }
85: //chart creation method
86:    JFreeChart createChart(final XYDataset dataset) {
87:         final JFreeChart chart = ChartFactory.createTimeSeriesChart(
88:             "Speed Chart",
89:             "Time",


An error occurred at line: 87 in the jsp file: /chart.jsp
JFreeChart cannot be resolved to a type
84:     }
85: //chart creation method
86:    JFreeChart createChart(final XYDataset dataset) {
87:         final JFreeChart chart = ChartFactory.createTimeSeriesChart(
88:             "Speed Chart",
89:             "Time",
90:             "Speed",


An error occurred at line: 87 in the jsp file: /chart.jsp
ChartFactory cannot be resolved
84:     }
85: //chart creation method
86:    JFreeChart createChart(final XYDataset dataset) {
87:         final JFreeChart chart = ChartFactory.createTimeSeriesChart(
88:             "Speed Chart",
89:             "Time",
90:             "Speed",


An error occurred at line: 97 in the jsp file: /chart.jsp
XYPlot cannot be resolved to a type
94:             false
95:         );
96:         chart.setBackgroundPaint(Color.white);
97:        final XYPlot plot = chart.getXYPlot();
98:         plot.setBackgroundPaint(Color.lightGray);
99:         plot.setDomainGridlinePaint(Color.white);
100:         plot.setRangeGridlinePaint(Color.white);


An error occurred at line: 103 in the jsp file: /chart.jsp
XYItemRenderer cannot be resolved to a type
100:         plot.setRangeGridlinePaint(Color.white);
101:         plot.setDomainCrosshairVisible(true);
102:         plot.setRangeCrosshairVisible(false);
103:         final XYItemRenderer renderer = plot.getRenderer();
104:         if (renderer instanceof StandardXYItemRenderer) {
105:             final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
106:             rr.setShapesFilled(true);


An error occurred at line: 104 in the jsp file: /chart.jsp
StandardXYItemRenderer cannot be resolved to a type
101:         plot.setDomainCrosshairVisible(true);
102:         plot.setRangeCrosshairVisible(false);
103:         final XYItemRenderer renderer = plot.getRenderer();
104:         if (renderer instanceof StandardXYItemRenderer) {
105:             final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
106:             rr.setShapesFilled(true);
107:             renderer.setSeriesStroke(0, new BasicStroke(1.0f));


An error occurred at line: 105 in the jsp file: /chart.jsp
StandardXYItemRenderer cannot be resolved to a type
102:         plot.setRangeCrosshairVisible(false);
103:         final XYItemRenderer renderer = plot.getRenderer();
104:         if (renderer instanceof StandardXYItemRenderer) {
105:             final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
106:             rr.setShapesFilled(true);
107:             renderer.setSeriesStroke(0, new BasicStroke(1.0f));
108:             renderer.setSeriesStroke(1, new BasicStroke(1.0f));


An error occurred at line: 105 in the jsp file: /chart.jsp
StandardXYItemRenderer cannot be resolved to a type
102:         plot.setRangeCrosshairVisible(false);
103:         final XYItemRenderer renderer = plot.getRenderer();
104:         if (renderer instanceof StandardXYItemRenderer) {
105:             final StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
106:             rr.setShapesFilled(true);
107:             renderer.setSeriesStroke(0, new BasicStroke(1.0f));
108:             renderer.setSeriesStroke(1, new BasicStroke(1.0f));


An error occurred at line: 110 in the jsp file: /chart.jsp
DateAxis cannot be resolved to a type
107:             renderer.setSeriesStroke(0, new BasicStroke(1.0f));
108:             renderer.setSeriesStroke(1, new BasicStroke(1.0f));
109:            }      
110:         final DateAxis axis = (DateAxis) plot.getDomainAxis();
111:         axis.setDateFormatOverride(new SimpleDateFormat("dd:MM"));
112:         try{
113:         final ChartRenderingInfo info = new ChartRenderingInfo


An error occurred at line: 110 in the jsp file: /chart.jsp
DateAxis cannot be resolved to a type
107:             renderer.setSeriesStroke(0, new BasicStroke(1.0f));
108:             renderer.setSeriesStroke(1, new BasicStroke(1.0f));
109:            }      
110:         final DateAxis axis = (DateAxis) plot.getDomainAxis();
111:         axis.setDateFormatOverride(new SimpleDateFormat("dd:MM"));
112:         try{
113:         final ChartRenderingInfo info = new ChartRenderingInfo


An error occurred at line: 113 in the jsp file: /chart.jsp
ChartRenderingInfo cannot be resolved to a type
110:         final DateAxis axis = (DateAxis) plot.getDomainAxis();
111:         axis.setDateFormatOverride(new SimpleDateFormat("dd:MM"));
112:         try{
113:         final ChartRenderingInfo info = new ChartRenderingInfo
114: (new StandardEntityCollection());
115: final File file1 = new File("/barchart.png");
116: ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);


An error occurred at line: 113 in the jsp file: /chart.jsp
ChartRenderingInfo cannot be resolved to a type
110:         final DateAxis axis = (DateAxis) plot.getDomainAxis();
111:         axis.setDateFormatOverride(new SimpleDateFormat("dd:MM"));
112:         try{
113:         final ChartRenderingInfo info = new ChartRenderingInfo
114: (new StandardEntityCollection());
115: final File file1 = new File("/barchart.png");
116: ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);


An error occurred at line: 114 in the jsp file: /chart.jsp
StandardEntityCollection cannot be resolved to a type
111:         axis.setDateFormatOverride(new SimpleDateFormat("dd:MM"));
112:         try{
113:         final ChartRenderingInfo info = new ChartRenderingInfo
114: (new StandardEntityCollection());
115: final File file1 = new File("/barchart.png");
116: ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);
117:         }catch(Exception e){}


An error occurred at line: 116 in the jsp file: /chart.jsp
ChartUtilities cannot be resolved
113:         final ChartRenderingInfo info = new ChartRenderingInfo
114: (new StandardEntityCollection());
115: final File file1 = new File("/barchart.png");
116: ChartUtilities.saveChartAsPNG(file1, chart, 600, 400, info);
117:         }catch(Exception e){}
118:         return chart;
119:     }  


An error occurred at line: 121 in the jsp file: /chart.jsp
XYDataset cannot be resolved to a type
118:         return chart;
119:     }  
120: //data set generation method
121:     private XYDataset createDataset() {
122:         final TimeSeriesCollection dataset = new TimeSeriesCollection();
123:         dataset.setDomainIsPointsInTime(true);      
124:         final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);


An error occurred at line: 122 in the jsp file: /chart.jsp
TimeSeriesCollection cannot be resolved to a type
119:     }  
120: //data set generation method
121:     private XYDataset createDataset() {
122:         final TimeSeriesCollection dataset = new TimeSeriesCollection();
123:         dataset.setDomainIsPointsInTime(true);      
124:         final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);
125:          int str = 0;


An error occurred at line: 122 in the jsp file: /chart.jsp
TimeSeriesCollection cannot be resolved to a type
119:     }  
120: //data set generation method
121:     private XYDataset createDataset() {
122:         final TimeSeriesCollection dataset = new TimeSeriesCollection();
123:         dataset.setDomainIsPointsInTime(true);      
124:         final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);
125:          int str = 0;


An error occurred at line: 124 in the jsp file: /chart.jsp
TimeSeries cannot be resolved to a type
121:     private XYDataset createDataset() {
122:         final TimeSeriesCollection dataset = new TimeSeriesCollection();
123:         dataset.setDomainIsPointsInTime(true);      
124:         final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);
125:          int str = 0;
126:          int i =0,j= 0 ;
127:          String str1 = null;


An error occurred at line: 124 in the jsp file: /chart.jsp
TimeSeries cannot be resolved to a type
121:     private XYDataset createDataset() {
122:         final TimeSeriesCollection dataset = new TimeSeriesCollection();
123:         dataset.setDomainIsPointsInTime(true);      
124:         final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);
125:          int str = 0;
126:          int i =0,j= 0 ;
127:          String str1 = null;


An error occurred at line: 124 in the jsp file: /chart.jsp
Minute cannot be resolved to a type
121:     private XYDataset createDataset() {
122:         final TimeSeriesCollection dataset = new TimeSeriesCollection();
123:         dataset.setDomainIsPointsInTime(true);      
124:         final TimeSeries s1 = new TimeSeries("Series 1", Minute.class);
125:          int str = 0;
126:          int i =0,j= 0 ;
127:          String str1 = null;


An error occurred at line: 148 in the jsp file: /chart.jsp
Minute cannot be resolved to a type
145:         String y = date.substring(0,4);
146:          String m = date.substring(5,7);
147:           String d = date.substring(8,10);
148:          s1.add(new Minute(i, j, Integer.parseInt(d), Integer.parseInt(m), Integer.parseInt(y)), str);
149:           }
150:           }
151:           catch(Exception e)


An error occurred at line: 46 in the jsp file: /chart.jsp
JFreeChart cannot be resolved to a type
43:  //chart class instance
44: Fms fm = new Fms("Graph");
45: 
46: JFreeChart chart = fm.createChart(fm.dataset);
47:  ChartUtilities.saveChartAsPNG(image, chart, 500, 400);
48: //get input stream
49:  FileInputStream fileInStream = new FileInputStream(image);


An error occurred at line: 46 in the jsp file: /chart.jsp
dataset cannot be resolved or is not a field
43:  //chart class instance
44: Fms fm = new Fms("Graph");
45: 
46: JFreeChart chart = fm.createChart(fm.dataset);
47:  ChartUtilities.saveChartAsPNG(image, chart, 500, 400);
48: //get input stream
49:  FileInputStream fileInStream = new FileInputStream(image);


An error occurred at line: 47 in the jsp file: /chart.jsp
ChartUtilities cannot be resolved
44: Fms fm = new Fms("Graph");
45: 
46: JFreeChart chart = fm.createChart(fm.dataset);
47:  ChartUtilities.saveChartAsPNG(image, chart, 500, 400);
48: //get input stream
49:  FileInputStream fileInStream = new FileInputStream(image);
50: //output stream foe returning chart as image


Stacktrace:
    org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
    org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:331)
    org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
    org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
    org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.37 logs.

Apache Tomcat/7.0.37

修改没有编译错误只有运行时错误

1 个答案:

答案 0 :(得分:0)

请把它写成一个servlet。 您将获得多种好处,包括显示编译错误的IDE。

您声明“没有Compilations错误,只有运行时错误”,但错误是编译错误,在尝试编译jsp时发生。