单张图片上传与回显

来源：互联网发布：阿里云邮件服务器设置编辑：程序博客网时间：2024/05/21 01:28

js代码：

/**
           * 上传并回显轮播图
           * @returns
           */
           doUpload:function(){
               var formData = new FormData($("#uploadForm")[0]);
                $.ajax({
                     url: '../banner/upPic.do' ,
                     type: 'POST',
                     data: formData,
                     async: false,
                     cache: false,
                     contentType: false,
                     processData: false,
                     success: function (data) {
                       banner.defaultOption.img=data.resData;
                       $("#scrollPic").attr("src","../upload/"+data.resData);
                     },
                     error: function (returndata) {
                         console.log(returndata);
                     }
                });
           },

后台代码

@RequestMapping(value = "/headPic")
   public String headPic(HttpServletRequest request) throws Exception {

       log.info(GlobalContract.LOG_BEGIN);
       ResultVO resultVO = null;

       //获取图片类
       MultipartRequest muRequest = (MultipartRequest) request;
       MultipartFile muFile = muRequest.getFile("headPic");
       if (!muFile.isEmpty()) {

           //创建文件储存路径
           String uploadPath = request.getSession().getServletContext()
                   .getRealPath("/upload");

           //获取原始文件名
           String originalName = muFile.getOriginalFilename();

           //切割保留后缀名，起新名
           int beginIndex = originalName.lastIndexOf(".");
           String suffix = originalName.substring(beginIndex);
           String newName = new Date().getTime() + suffix;

           //文件写入
           File uploadFile = new File(uploadPath + File.separator + newName);
           try {
               FileUtils.copyInputStreamToFile(muFile.getInputStream(),
                       uploadFile);
               resultVO=new ResultVO();

               //返回新文件名
               resultVO.setResData(newName);
           } catch (IOException e) {
               e.printStackTrace();
               resultVO = new ResultVO(GlobalMessage.MSG_01);
               log.error("错误参数：" + originalName);
               log.error("错误信息：" + e.getMessage());
           }
       } else {
           resultVO=new ResultVO();
           resultVO.setResData("defeat");
       }

       log.info(GlobalContract.LOG_END);
       return JSONObject.fromObject(resultVO).toString();
   }

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