AJAX和Servlet文件进度条显示

1：weblogic8.1下，commons-fileupload-1.2.jar 和 commons-io-1.1.jar报了如下异常。
java.lang.NoSuchMethodError: parseRequest
        at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(Ljavax.servlet.http.HttpServletRequest;)Ljava.util.List;(ServletFileUp
load.java:126)
        at com.pingan.mysystem.mytest.web.controller.Upload.upload(Ljavax.servlet.http.HttpServletRequest;)V(Upload.java:49)
        at com.pingan.mysystem.mytest.web.controller.Upload.doPost(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(U
pload.java:38)
        at javax.servlet.http.HttpServlet.service(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(HttpServlet.java:7
60)
        at javax.servlet.http.HttpServlet.service(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(HttpServlet.java:853)
        at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run()Ljava.lang.Object;(ServletStubImpl.java:996)
        at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;Lweblogic.servlet.inte
rnal.FilterChainImpl;)V(ServletStubImpl.java:419)
        at weblogic.servlet.internal.TailFilter.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;Ljavax.servlet.FilterChain;)V(Ta
ilFilter.java:28)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(FilterChainImpl.java:27)

        at com.paic.pafa.app.web.filter.CharacterEncodingFilter.doFilterInternal(Ljavax.servlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServle
tResponse;Ljavax.servlet.FilterChain;)V(CharacterEncodingFilter.java:73)
        at com.paic.pafa.app.web.filter.OncePerRequestFilter.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;Ljavax.servlet.Filt
erChain;)V(OncePerRequestFilter.java:73)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(Ljavax.servlet.ServletRequest;Ljavax.servlet.ServletResponse;)V(FilterChainImpl.java:27)

        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run()Ljava.lang.Object;(WebAppServletContext.java:6458)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Lweblogic.security.subject.AbstractSubject;Ljava.security.PrivilegedAction;)Ljava.
lang.Object;(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(Lweblogic.security.acl.internal.AuthenticatedSubject;Lweblogic.security.acl.internal.Authen
ticatedSubject;Ljava.security.PrivilegedAction;)Ljava.lang.Object;(SecurityManager.java:118)
        at weblogic.servlet.internal.WebAppServletContext.invokeServlet(Lweblogic.servlet.internal.ServletRequestImpl;Lweblogic.servlet.internal.Servl
etResponseImpl;)V(WebAppServletContext.java:3661)
        at weblogic.servlet.internal.ServletRequestImpl.execute(Lweblogic.kernel.ExecuteThread;)V(ServletRequestImpl.java:2630)
        at weblogic.kernel.ExecuteThread.execute(Lweblogic.kernel.ExecuteRequest;)V(ExecuteThread.java:219)
        at weblogic.kernel.ExecuteThread.run()V(ExecuteThread.java:178)
        at java.lang.Thread.startThreadFromVM(Ljava.lang.Thread;)V(Unknown Source)
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