Apache Tomcat 配置错误信息解决方法

常青树

　　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
        org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97)
        org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346)
        org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:414)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
        org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root cause

Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK
        org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106)
        org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935)
        org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:764)
        org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
        org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

　　

　　只要把JDK版本的D:\j2sdk1.4.2_08\lib\Tools.jar复制到D:\Tomcat 5.0\common\lib下，重启动Tomcat，就可以配置正确了