java Tomcat与Intellij IDEA的结合：没有可用的编译器

Question

我只是将Intellij IDEA与Arch Linux上的Tomcat 7服务器结合起来进行测试

在启动Tomcat时，我得到了标准的Tomcat页面

sudo /etc/rc.d/tomcat start

我刚刚使用了http://wiki.jetbrains.net/intellij/Creating_a_simple_Web_application_and_deploying_it_to_Tomcat的教程来配置Intellij

只是一个空白项目，但运行Tomcat并在Webbrowser中打开localhost:8080会导致以下异常：

Feb 22, 2012 11:38:57 AM org.apache.catalina.core.StandardWrapperValve invoke
Schwerwiegend: Servlet.service() for servlet [jsp] in context with path [] threw exception [java.lang.IllegalStateException: No Java compiler available] with root cause
java.lang.IllegalStateException: No Java compiler available
at org.apache.jasper.JspCompilationContext.createCompiler(JspCompilationContext.java:228)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:638)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$SocketWithOptionsProcessor.run(AprEndpoint.java:1763)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

我不知道为什么java编译器不见了。Java Home在Tomcat conf中设置为

 /opt/java

有人能帮我吗

Answer 1

这个错误有误导性，它找不到Jasper JSP编译器，而不是Java编译器

它是org.apache.jasper.compiler.JDTCompiler，不能从类路径加载，这意味着很可能由于某种原因，带有它的JAR文件（jasper.jar）没有到达那里

您是从apache下载/解包Tomcat，还是从Linux发行版repo安装它？分发包有时会损坏包结构