关于用struts组件上传文件抛出的异常问题求救!!!

请各位高手解决一下,万分感激!实在搞不定了
严重: Failed to parse multipart requestorg.apache.commons.fileupload.FileUploadException: Processing of multipart/form-data request failed. EOF after reading only: '0' of: '1855632' promised bytes, out of which at least: '0' were already buffered at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:429) at org.apache.struts.upload.CommonsMultipartRequestHandler.handleRequest(CommonsMultipartRequestHandler.java:233) at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1209) at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6981) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)