Apache在尝试上传文件时返回此错误（我只保留了stacktrace的第一行和根本原因）：

HTTP Status 500 - 
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Exception in JSP: /upload.jsp:40

    37:      
    38:        try {
    39: 
    40:            items = upload.parseRequest(request);
    41:        } catch (FileUploadException e) {
    42:            out.println(e);
    43:        }

Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:451)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

root cause

javax.servlet.ServletException: org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(Lorg/apache/commons/fileupload/RequestContext;)Ljava/util/List;

root cause

java.lang.NoSuchMethodError: org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(Lorg/apache/commons/fileupload/RequestContext;)Ljava/util/List;
    org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126)

这是我的代码：

if(ServletFileUpload.isMultipartContent(request)){
 FileItemFactory factory = new DiskFileItemFactory();
   ServletFileUpload upload = new ServletFileUpload(factory);
   List items = null;


   try {

       items = upload.parseRequest(request);
   } catch (FileUploadException e) {
       out.println(e);
   }
}

我不明白，它似乎找不到parseRequest（）方法，但是ServletFileUpload实例工作正常，所以似乎包在那里但…

任何的想法？所有建议均对您有所帮助！:)