一般接口容错方法集

const fetch = require("node-fetch");
const config = require("../config");
//统一代码 处理容错
class SafeRequest {
  constructor(url) {
    this.url = url;
    // this.options = options;
    this.baseURL = config.baseUrl;
  }
  fetch(options) {
    return new Promise((resolve, reject) => {
      //失败
      let result = {
        code: 0, //正常请求状态
        message: "",
        data: [],
      };
      let myfetch = fetch(this.baseURL + this.url);
      if (options.params) {
        myfetch = fetch(this.baseURL + this.url, {
          method: options.method,
          body: options.params,
        });
      }
      myfetch
        .then((res) => {
            try {
                return res.json();
            } catch (error) {
                result.code = 1;
                result.message = "解析Json失败";
                reject(result)
            }
        )
        .then((json) => {
          result.data = json;
          resolve(result);
        })
        .catch((error) => {
          result.code = 1;
          //mail 服务器 直接打电话 发邮件
          result.message = "node-fetch请求失败，后端报警!";
          reject(result);
        });
    });
  }
}
module.exports = SafeRequest;