vue将前端的json文件上传到后台对应目录

前端方法代码：

/**
   * 
   * @param {*} fileName 文件名
   * @param {*} data 要保存的json对象
   * @returns 
   */
  saveJsonFileToLocal(fileName, data) {
    let file = new File([JSON.stringify(data)], `${fileName}.json`, {
      type: "application/json",
    });
    let savePath = 要保存的路径地址;
    let formdata = new FormData();
    formdata.append("file", file);
    formdata.append("savePath", savePath);
    let requesUrl = "/jsonServiceApi/jsonSave";
    return new Promise((resolve, reject) => {
      axios({
        method: "post",
        url: requesUrl,
        headers: {
          "Content-Type": "multipart/form-data",
        },
        transformRequest: [
          function(data, headers) {
            // 去除post请求默认的Content-Type
            delete headers.post["Content-Type"];
            return data;
          },
        ],
        data: formdata,
      })
        .then((res) => {
          resolve(res);
        })
        .catch((err) => {
          reject(err);
        });
    });
  }

后台代码（java）：

@RestController
@CrossOrigin
@RequestMapping("JsonSaveService ")public class JsonSaveService {
    @RequestMapping("/jsonSave")
    public Object jsonSave() {
        try {
            ServletRequestAttributes context = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
            Map<String, String[]> map = context.getRequest().getParameterMap();
            String savePath = map.get("savePath")[0];
            //如果没有目标目录，则创建
            File fileDir = new File(savePath);
            if (!fileDir.exists()) {
                fileDir.mkdirs();
            }
            Part file = context.getRequest().getPart("file");
            file.write(savePath + file.getSubmittedFileName());
        } catch (Exception e) {
            e.printStackTrace();
        }        return true;
    }
}

参考文章：http://blog.ncmem.com/wordpress/2023/11/09/vue将前端的json文件上传到后台对应目录/