上传图片或文档 二进制文档流方式上传

问题： 接口上传图片 需要将图片以二进制得格式 与其他字段一块传给后端

方案： 改变接口传递类型  application/x-www-form-urlencoded

 let params = {
        thaliId: this.editData.thaliId,
        thaliPrice: this.editData.thaliPrice,
        salesInstructions: this.editData.salesInstructions,
        imgFile: this.titleFile, //图片二进制格式
      };
      if (!this.titleFile) {
        delete params.imgFile;
      }
      let data = this.stringify(params); //将参数转换成功 formdata 接收格式
      payConfig
        .updateOpThali(data, "application/x-www-form-urlencoded")
        .then((res) => {
          if (res.code != 0) {
            this.$message.error(res.errorMsg);
            this.loading = false;
            return;
          }
     });

 // 将参数转换成功 formdata 接收格式
    stringify(data) {
      const formData = new FormData();
      for (const key in data) {
        // eslint-disable-next-line no-prototype-builtins
        if (data.hasOwnProperty(key)) {
          if (data[key]) {
            if (data[key].constructor === Array) {
              if (data[key][0]) {
                if (data[key][0].constructor === Object) {
                  formData.append(key, JSON.stringify(data[key]));
                } else {
                  data[key].forEach((item, index) => {
                    formData.append(key + `[${index}]`, item);
                  });
                }
              } else {
                formData.append(key + "[]", "");
              }
            } else if (data[key].constructor === Object) {
              formData.append(key, JSON.stringify(data[key]));
            } else {
              formData.append(key, data[key]);
            }
          } else {
            if (data[key] === 0) {
              formData.append(key, 0);
            } else if (data[key] === null) {
              formData.append(key, null);
            } else {
              formData.append(key, "");
            }
          }
        }
      }
      return formData;
    },