文件上传upload.parseRequest(request)解析为空

Question

JSP+servlet实现，没有用到框架

jsp：
< form action= "${pageContext.request.contextPath}/CourseUpload"
method = "post" enctype="multipart/form-data" >

servlet：
DiskFileItemFactory factory = new DiskFileItemFactory();
String path = request.getSession().getServletContext().getRealPath("/upload");
System.out.println(path);
factory.setRepository(new File(path));
factory.setSizeThreshold(1024 * 1024);

    ServletFileUpload upload = new ServletFileUpload(factory);
    upload.setFileSizeMax(-1);

    try {
        List< FileItem> list = upload.parseRequest(request);
        System.out.println(list);
        for (FileItem item : list) {
            if (item.isFormField()) {
                realpath = item.getName();
                System.out.println(realpath);
            }else{
                realpath = item.getName();
                System.out.println(realpath);
            }
        }
    } catch (FileUploadException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

Answer 1

ServletFileUpload upload = new ServletFileUpload(factory);
upload.setFileSizeMax(-1);//去掉这行