SSH使用Spring中MultipartHttpServletRequest实现文件上传

Question

HttpServletRequest request = ServletActionContext.getRequest();
String UserStr = HttpServletRequestUtil.getString(request,"Userstr");
System.out.println("UserStr:"+UserStr);
MultipartHttpServletRequest multipartRequest = null;
MultipartFile profileImg = null;
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
System.out.println("multipartResolver.isMultipart(request):"+multipartResolver.isMultipart(request));
if (multipartResolver.isMultipart(request)) {
multipartRequest = multipartResolver.resolveMultipart(request);
profileImg = (MultipartFile) multipartRequest.getFile("fileupload");
}

HttpServletRequest request = ServletActionContext.getRequest();
String UserStr = HttpServletRequestUtil.getString(request,"Userstr");
System.out.println("UserStr:"+UserStr);
MultipartHttpServletRequest multipartRequest = null;
MultipartFile profileImg = null;
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
System.out.println("multipartResolver.isMultipart(request):"+multipartResolver.
问题：
multipartRequest.getFile("fileupload")为null
有时form表单中的Userstr也为null

Answer 1

实现文件上传，需要3个条件，form表单中要post请求， enctype="multipart/form-data"，input中type="file"

你的可以上传1M以下的，这个应该不对吧 默认是能上传2M以下的，而且你也可以修改这个默认文件的大小