求助org.apache.jasper.JasperException: Unable to compile class for JSP

ruoshui_sanqian 2010-04-05 06:03:59
test.jsp
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="org.jfree.chart.JFreeChart"%>
<%@ page import="org.jfree.chart.ChartUtilities"%>
<%@ page import="org.jfree.chart.ChartFactory"%>
<%@ page import="org.jfree.data.general.DefaultPieDataset"%>
<html>
<body>
<%
String dataName[]=new String[]{"0-30岁","30-50岁","50-70岁","70岁以上"};//显示数据系列
int dataValueCount[]={4,5,4,6};//数据系列对应的值
//------创建数据集,并设置值------
DefaultPieDataset pieDataset = new DefaultPieDataset();
for(int i=0;i<dataName.length;i++)
pieDataset.setValue(dataName[i],dataValueCount[i]);
String titleString="用户年龄阶段分布统计图";//图的标题
JFreeChart chart = ChartFactory.createPieChart(titleString,pieDataset,true,true,false);
ChartUtilities.writeChartAsJPEG(response.getOutputStream(),chart,500,300);
%>
</body>
</html>
}
错误提示
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

Generated servlet error:
Only a type can be imported. org.jfree.chart.JFreeChart resolves to a package

Generated servlet error:
Only a type can be imported. org.jfree.chart.ChartUtilities resolves to a package

Generated servlet error:
Only a type can be imported. org.jfree.chart.ChartFactory resolves to a package

Generated servlet error:
Only a type can be imported. org.jfree.data.general.DefaultPieDataset resolves to a package

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
DefaultPieDataset cannot be resolved to a type

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
DefaultPieDataset cannot be resolved to a type

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
JFreeChart cannot be resolved to a type

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
ChartFactory cannot be resolved

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
ChartUtilities cannot be resolved


org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root cause

org.apache.jasper.JasperException: Unable to compile class for JSP

Generated servlet error:
Only a type can be imported. org.jfree.chart.JFreeChart resolves to a package

Generated servlet error:
Only a type can be imported. org.jfree.chart.ChartUtilities resolves to a package

Generated servlet error:
Only a type can be imported. org.jfree.chart.ChartFactory resolves to a package

Generated servlet error:
Only a type can be imported. org.jfree.data.general.DefaultPieDataset resolves to a package

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
DefaultPieDataset cannot be resolved to a type

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
DefaultPieDataset cannot be resolved to a type

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
JFreeChart cannot be resolved to a type

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
ChartFactory cannot be resolved

An error occurred at line: 8 in the jsp file: /pieChart.jsp
Generated servlet error:
ChartUtilities cannot be resolved


org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.


--------------------------------------------------------------------------------

Apache Tomcat/5.5.17

--------------------------------------------------------------------------------
配置
jdk1.5
Tomcat 5.5

请各位高人指点指点吧，毕业设计啊，好几天了一直报这个错误，先在此谢过了

上一个问题（org.apache.jasper.JasperException: /test.jsp(10,0) UseBean has invalid attribute: name
）忘了改分，不好意思啊，请多多帮忙啊
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dj1004092453 2012-10-10
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请问lz问题是怎么解决的？我也出现同样的问题了
jimmyblood007 2010-06-01
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什么问题呢？
ruoshui_sanqian 2010-04-05
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谢谢各位啊，问题已经解决了
ruoshui_sanqian 2010-04-05
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[Quote=引用 12 楼 xyylove520 的回复:]
你的问题应该跟他遇到的一样，

http://blog.csdn.net/thamsyangsw/archive/2009/08/25/4481754.aspx

问题不大，仔细检查一下吧。

good luck
[/Quote]
不对啊 ，他那个都是自己写的java文件，但是我的是引用的java库文件啊，这种是没有问题的啊
哀 2010-04-05
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你的问题应该跟他遇到的一样，

http://blog.csdn.net/thamsyangsw/archive/2009/08/25/4481754.aspx

问题不大，仔细检查一下吧。

good luck
ruoshui_sanqian 2010-04-05
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[Quote=引用 10 楼 xyylove520 的回复:]
DefaultPieDataset pieDataset = new DefaultPieDataset();
是这行初始化的时候报错了吧 应该就是缺少jar包

请LZ在部署后 看看工程里有 jfreechart的相关jar包不
[/Quote]
我的工程下边这些包都有啊
哀 2010-04-05
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DefaultPieDataset pieDataset = new DefaultPieDataset();
是这行初始化的时候报错了吧 应该就是缺少jar包

请LZ在部署后 看看工程里有 jfreechart的相关jar包不
ruoshui_sanqian 2010-04-05
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[Quote=引用 7 楼 tubage408 的回复:]
肯定是缺少了jar包，你在发布后的工程里看看有jfreechart相关的jar包不？
[/Quote]
我在eclipse的工作状态下都能看到我的jfreechart包啊
tubage408 2010-04-05
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还有一种可能是因为你jsp里引的类与jar包里对应的类的全路径不一致，也就是版本问题了。
tubage408 2010-04-05
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肯定是缺少了jar包，你在发布后的工程里看看有jfreechart相关的jar包不？
ruoshui_sanqian 2010-04-05
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那个test.jsp不是jsp文件名写错了，文件名是pieChart.jsp
ruoshui_sanqian 2010-04-05
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[Quote=引用 3 楼 xyylove520 的回复:]
Only a type can be imported. org.jfree.data.general.DefaultPieDataset resolves to a package应该是少包

An error occurred at line: 8 in the jsp file: /pieChart.jsp
这一行是什么
[/Quote]
pieChart.jsp
是jsp的名字，好像是提示错误在pieChart.jsp
的第8行吧，我也不知道啊
ruoshui_sanqian 2010-04-05
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可是在我的library下的web app library下有jfreechart-1.0.13-experimental.jar,jfreechart-1.0.13-swt.jar和jfreechart-1.0.13.jar呀
哀 2010-04-05
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Only a type can be imported. org.jfree.data.general.DefaultPieDataset resolves to a package应该是少包

An error occurred at line: 8 in the jsp file: /pieChart.jsp
这一行是什么
jisg_57 2010-04-05
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没有引入jfreechart包吧？
owen_008 2010-04-05
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给楼主顶一个·~~~~~~~~~~~~~~~~~~~~~~~~~哈哈
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