jsp页面无法编译，Permission denied
在linux + tomcat 上部署的项目，使用的是root启动项目后，项目可以正常访问，隔了一段时间再访问，就会报这个问题，一般这个页面是启动后没有直接访问到的页面，而是在过一段时间后点到的，如果再次重启服务器页面访问正常，隔一段时间后又会出现这个问题。求大神指导~

Struts Problem Report



Struts has detected an unhandled exception:



Messages:	

/usr/local/apache/tomcat/work/Catalina/localhost/_/org/apache/jsp/user/msg/msg_005ftreehole_jsp.java (Permission denied)

Unable to compile class for JSP

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

File:	org/apache/jasper/JspCompilationContext.java

Line number:	656

Stacktraces



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

    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:548)

    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:379)

    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)

    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)

    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

    org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)

    org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)

    org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)

    org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)

    org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:159)

    org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)

    com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:373)

    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:277)

    com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)

    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)

    com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)

    org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)

    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)

    com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)

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