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詳細錯誤資訊

HTTP Status 500 - javax.servlet.ServletException
 
: java.lang.OutOfMemoryError: PermGen spacetype Exception reportmessage javax.servlet.ServletException: java.lang.OutOfMemoryError: PermGen spacedescription The server encountered an internal error that prevented it from fulfilling this request.exceptionorg.apache.jasper.JasperException: javax.servlet
 
.ServletException: java.lang.OutOfMemoryError: PermGen space    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455)    org.apache.jasper
 
.servlet.JspServlet.serviceJspFile(JspServlet.java:390)    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)    com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:115)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)root causejavax.servlet.ServletException: java.lang.OutOfMemoryError: PermGen space    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:916)    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:845)    org.apache.jsp.index_jsp._jspService(index_jsp.java:1102)    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)    com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:115)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)root causejava.lang.OutOfMemoryError: PermGen space    java.lang.Class.getDeclaredConstructors0(Native Method)    java.lang.Class.privateGetDeclaredConstructors(Unknown Source)    java.lang.Class.getConstructor0(Unknown Source)    java.lang.Class.newInstance(Unknown Source)    org.apache.jasper.runtime.TagHandlerPool.get(TagHandlerPool.java:120)    org.apache.jsp.index_jsp._jspx_meth_c_005fset_005f0(index_jsp.java:1115)    org.apache.jsp.index_jsp._jspService(index_jsp.java:85)    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)    com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:115)    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)note The full stack trace of the root cause is available in the Apache Tomcat/7.0.54 logs.Apache Tomcat/7.0.54
   

    
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PermGen space

PermGen space的全稱是Permanent Generation space,是指記憶體的永久儲存區域OutOfMemoryError: PermGen space從表面上看就是記憶體益出，解決方法也一定是加大記憶體。說說為什麼會記憶體益出：這一部分用於存放Class和Meta的資訊,Class在被 Load的時候被放入PermGen space區域，它和和存放Instance的Heap區域不同,GC(Garbage Collection)不會在主程式執行期對PermGen space進行清理，所以如果你的APP會LOAD很多CLASS的話,就很可能出現PermGen space錯誤。這種錯誤常見在web伺服器對JSP進行pre compile的時候。

解決方法

只需要在Tomcat的bin目錄下的“catalina.sh”檔案中新增一行就可以解決問題

JAVA_OPTS='-Xms512m -Xmx2048m -XX:PermSize=128M -XX:MaxNewSize=256m -XX:MaxPermSize=256m'
   

    
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具體位置如下圖：

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