關於Servlet class org.apache.jasper.servlet.JspServlet for servlet debugjsp could not be loaded

環境：JBuilder+Weblogic

問題：訪問JSP頁面時出現下面的錯誤

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)

錯誤原因: Jbuilder工具會自動在web.xml里加一段代碼

 <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>

解決方法：

1.註釋掉這段XML

2.找到org.apache.jasper.servlet.JspServlet，打到包裏面。