Question

java-SpringMVC 后台怎么获取前台jsp页面中file中的文件

Answer 1

1. 页面表单设置类型：enctype="multipart/form-data"

2. 后台通过org.springframework.web.multipart.MultipartFile处理上传
   

Answer 2

@RequestMapping("presentAction/addPicture")
public void addPicture(HttpSession session,HttpServletRequest request,HttpServletResponse response,
@RequestParam(value = "presentId", required = true) int presentId)
{
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;     
      // 获得文件：     
      MultipartFile file = multipartRequest.getFile("up_img"); 
      if (!file.isEmpty()) {  
          try {  
              // 文件保存路径  
              String filePath = request.getSession().getServletContext().getRealPath("/uploadImages")+"/" 
                      + file.getOriginalFilename();  
              // 转存文件  
              String path2="uploadImages/"+ file.getOriginalFilename();
                   System.out.println(filePath);
              presentService.addPicture(path2,presentId);
              file.transferTo(new File(filePath));  
              hashMap.put("code", "200");
              printe(response);
          } catch (Exception e) {  
              e.printStackTrace();  
          }  
      }  
 
}

Answer 3

MultipartFile file = request.getFile("fileId");