vue使用formdata上传多个图片,springboot以文件数组的形式接受

vue代码(使用element-ui):

思路:依次遍历fileList数组,将其中的每个图片文件提取出,再加入到formdata中,因为是多文件上传,后端以文件数组的形式接受,

因此每次合并到formdata的key值都为同一值。

    uploadImg() {
        let imgfile = new FormData();
        for (var i = 0; i < this.fileList.length; i++) {
            // files[i] = this.fileList[i].raw;
            imgfile.append("files",this.fileList[i].raw);
        }
        // console.log("文件长度",files.length);
        imgfile.append("id",this.radio);
        console.log("将要上传的文件:",imgfile.get("files"));
        if (this.fileList.length > 0) {
            this.$ajax({
                method: "post",
                url: "/xxxx/xxxx/xxxxxxxx/productImg",
                data: imgfile
            }).then(resp => {
                console.log("返回值:",resp.data.code)
                if (resp.data.code) {
                    this.$message({
                        message: "上传药材图片成功",
                        type: "success"
                    });
                } else {
                    this.$message({
                        message: "上传药材图片失败",
                        type: "warning"
                    })
                }
                this.cleanImg();
                this.dialogUploadPhoto = false;
            })
        } else {
            this.$message({
                message: "请选择需要上传的图片",
                type: "warning"
            });
        }
    }

后端代码:

Controller:

    @PostMapping("productImg")
    public ResponseEntity<Map<String,Object>> uploadImg(@RequestParam("files")MultipartFile[] files, HttpServletRequest request, @RequestParam Map<String, Object> map) {
        return ResponseEntity.status(HttpStatus.CREATED).body(productBaseService.saveImg(files,request,map));
    }

service:

    @Override
    public Map<String, Object> saveImg(MultipartFile[] files, HttpServletRequest request, Map<String, Object> map) {
        Map<String,Object> maps = new HashMap<String, Object>();try {
            // 判断文件数组是否为空
            if (files == null || files.length < 1) {
                maps.put("code",false);
            } else {
                System.out.println("有数据");
                //判断是否有路径
                String path = Constant.IMG_PATH_FILE;
                if (!new File(path).exists()) {
                    new File(path).mkdirs();
                }
                // 遍历图片文件
                for (int i = 0; i < files.length; i++) {
                    MultipartFile file = files[i];
                    // 将图片文件保存到服务器,同时返回上传后图片的名字
                    String image = uploadFile(file,path,map);
                    ProductBaseImg productBaseImg = new ProductBaseImg();
                    productBaseImg.setId(UUIDUtil.uuid());
                    productBaseImg.settImgId(image);
                    productBaseImg.settProductbaseId((String)map.get("id"));
                    productBaseImgMapper.insert(productBaseImg);
                    System.out.println("上传成功");
                }
                maps.put("code",true);
            }
        } catch (IOException e) {
            maps.put("code",false);
            e.printStackTrace();
        }
        return maps;
    }

    public static String uploadFile(MultipartFile file,String path,Map<String, Object> map) throws IOException {
        String name = file.getOriginalFilename();
        String suffixName = name.substring(name.lastIndexOf("."));
        // 生成图片id
        String imgid = UUIDUtil.uuid();
        String fileName = imgid + suffixName;
        File tempFile = new File(path,fileName);
        if(!tempFile.getParentFile().exists()){
            tempFile.getParentFile().mkdir();
        }
        if(tempFile.exists()){
            tempFile.delete();
        }
        tempFile.createNewFile();
        file.transferTo(tempFile);
        return tempFile.getName();
    }
原文地址:https://www.cnblogs.com/flypig666/p/12267718.html