egg-axios-plus/lib/axios_request.js

适用于egg框架完成基本的http请求，支持async/await操作,实现egg框架下agent/app挂载,支持后端请求

'use strict';
/*
 * @Description: axios对象实例化
 * @Version: Beta1.0
 * @Author: 【B站&公众号】Rong姐姐好可爱
 * @Date: 2021-03-20 11:23:45
 * @LastEditors: 【B站&公众号】Rong姐姐好可爱
 * @LastEditTime: 2021-03-20 11:28:48
 */
const axios = require('axios');
const { merge: deepMerge } = require('lodash');

/**
 * @description method enclosure based on axios
 * @param {context} app app context of egg
 * @author Taylor
 * @github https://github.com/mmdapl
 */
function EggAxios(app) {
  this.app = app;
  return this.init(app);
}

/**
 * @description axios prototype default config init load
 * @author Taylor
 * @github https://github.com/mmdapl
 */
EggAxios.prototype.init = function(app) {
  // 默认配置
  const defaultConfig = {
    headers: {
      common: {
        'Content-Type': 'application/json; charset=UTF-8',
      },
    },
    // default 5 seconds timeout
    timeout: 5000,
  };
  // axios对象初始化配置合并
  axios.defaults = deepMerge(
    axios.defaults,
    defaultConfig,
    app.config.axiosPlus
  );
  app.logger.info(
    `[egg-axios-plus] default configs: ${JSON.stringify(axios.defaults)}`
  );
  // 获取插件的配置
  const config = app.config.axiosPlus;
  //  添加请求拦截器
  axios.interceptors.request.use(
    config.requestInterceptorsHandler ||
      function(config) {
        app.coreLogger.debug(
          `[egg-axios-plus] send request, baseURL: ${JSON.stringify(
            config.baseURL
          )}, url: ${config.url}, method: ${
            config.method
          }, data: ${JSON.stringify(config.data)}, headers: ${JSON.stringify(
            config.headers
          )}`
        );
        return config;
      },
    config.requestInterceptorsErrorHandler ||
      function(error) {
        app.coreLogger.error(
          `[egg-axios-plus] send request error, ${error.message}`
        );
        return Promise.reject(error);
      }
  );
  // 响应拦截器
  axios.interceptors.response.use(
    config.responseInterceptorsHandler ||
      function(response) {
        if (
          response.config &&
          (response.config.method.toUpperCase() === 'HEAD' ||
            response.config.method.toUpperCase() === 'options')
        ) {
          return response;
        }
        return response.data;
      },
    config.responseInterceptorsErrorHandler ||
      function(error) {
        app.logger.error(
          `[egg-axios-plus] receive response error, ${error.message}`
        );
        return Promise.reject(error);
      }
  );
  // 返回axios对象
  return axios;
};

module.exports = EggAxios;