环境：JBuilder+Weblogic
问题：访问JSP页面时出现下面的错误
Error 500--Internal Server Error
javax.servlet.ServletException: [HTTP:101250][ServletContext(id=21648788,name=sp,context-path=/sp)]: Servlet class org.apache.jasper.servlet.JspServlet for servlet debugjsp could not be loaded because a class on which it depends was not found in the classpath E:/MyProjects/Projects/SP/web/sp/sp;E:/bea/user_projects/domains/mydomain/./../../../../MyProjects/Projects/SP/web/sp/sp/WEB-INF/classes;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-beanutils8457.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-collections8458.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-digester8459.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-fileupload8460.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-lang8461.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-logging8462.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/commons-validator8463.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/jakarta-oro8464.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/jstl8465.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/saxpath8466.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/standard8467.jar;E:/bea/user_projects/domains/mydomain/./myserver/.wlnotdelete/extract/myserver_JBuilder_WebRun_sp/jarfiles/WEB-INF/lib/struts8468.jar. java.lang.NoClassDefFoundError: org/apache/jasper/JasperException. at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:800) at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:504) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:349) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6310) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3622) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2569) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170) |
错误原因: Jbuilder工具会自动在web.xml里加一段代码
<servlet>
<servlet-name>debugjsp</servlet-name>
<description>Added to compile JSPs with debug info</description>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>classdebuginfo</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>3</load-on-startup>
</servlet>
解决方法：
1.注释掉这段XML
2.找到org.apache.jasper.servlet.JspServlet，打到包里面。