各位大虾们，俺是java初学者，新建的项目测试都没通过，帮俺看看这是啥错误，感觉是环境变量有问题

Question

本帖最后由 seizetoday 于 2010-05-28 09:59:14 编辑

Answer 1

2010-5-28 9:49:44 org.apache.jasper.compiler.Compiler generateClass
严重: Javac execption 
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
at org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:139)
at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:835)
at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:682)
at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:390)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:455)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:555)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:300)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:293)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:286)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:258)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:256)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:210)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:196)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:175)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:207)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:647)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:497)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:575)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:649)
at java.lang.Thread.run(Unknown Source)

Answer 2

楼主的环境变量配置有问题哦
建议在命令窗口先输入javac测试看看如果说找不到该命令，则需配置环境变量
配置环境变量google一下很多的如果楼主已经配置好了，还出现这问题，尝试将jdk/lib/tools.jar 拷贝到 tomcat/common/lib下重新启动tomcat若还有问题，再联系，祝好运

Answer 3

javac 命令到是有，谢谢了，我先试下第二个方法。再次感谢