接口定义

var UNDEFINED = 'undefined';
var FUNCTION = 'function';
var NUMBER = 'number';
var GLOBAL = 'global';
var ARGUMENTS = 'arguments';
var DATE = 'date';
var ERROR = 'error';
var NULL = 'null';
var OBJECT = 'object';
var STRING = 'string';
var ARRAY = 'array';
var REGEXP = 'regexp';
var BOOLEAN = 'boolean';

module.exports = {
  //获取当前用户信息
  getUserInfo: {
    url: 'api/user/getUserInfo',
    method: 'get',
    params: {
      withFavs: {
        type: BOOLEAN,
        required: false
      },
      useCache: {
        type: BOOLEAN,
        default:false,
        required: false
      }
    }
  },

  //获取推荐列表    
  recomThreads: {
    url: 'api/recommendList',
    method: 'post',
    params: {
      recordTime: {
        type: STRING,
        required: true
      },
      cityName: {
        type: STRING,
        required: true
      },
      page: {
        type: NUMBER,
        default: 1,
        required: false
      },
      perPage: {
        type: NUMBER,
        default: 50,
        required: false
      }
    },
    showLoading: true
  },
}

接口实现

/* 
 * init.js 接口文件
 * 接口请求promise实现
 * 通过API['接口名称']['请求方法']调用接口 如API.publishContent.get(data).then(success, error)
 * 接口配置统一放置 ./index.js
 * 通过var API = require('./index.js') 获取API对象
 * 
 */
module.exports = function() {
  Object.keys(config).forEach((key) => {
    let item = config[key];
    const method = item.method;
    item[method] = (data, showLoading) => {
      if (item.params) {
        //参数校验
        let params = item.params;
        Object.keys(params).forEach((key) => {
          const item2 = params[key];
          if (item2.required) {
            let value = data[key] === false ? false : (data[key] || item2.default);
            if (value !== false && !value) {
              console.error(item.url + ' -' + key + ' :is required');
            } else {
              if (typies(value) !== item2.type) {
                console.error(item.url + ' -' + key + ' :type must be ' + item2.type);
              }
            }
          } else {
            if (data[key] === false || data[key]) {
              if (typies(data[key]) !== item2.type) {
                console.error(item.url + ' -' + key + ' :type must be ' + item2.type);
              }
            }
          }
        })
      }
      return asyncCreateFactory(item.url, method.toUpperCase(), data || {}, showLoading === false ? false : (item.showLoading || showLoading))
    }
  })
}

//返回 promise
function asyncCreateFactory(url, method, data, showLoading) {
  if (showLoading) {
    wx.showLoading({
      title: '加载中'
    })
  }
  return new Promise(function(resolve, reject) {
    request({
      method: method,
      path: url,
      data: data,
      success: function(res) {
        resolve(res.data);
        if (showLoading) {
          wx.hideLoading()
        }
      },
      fail: function(error) {
        reject(error);
        if (showLoading) {
          wx.hideLoading()
        }
      }
    })
  })
}

接口使用

//只要调用一次
var initApi = require('./init.js');
initApi();

//使用的地方调用
var API = require('./index.js')
API.getUserInfo.get({
  withFavs:true,
  useCache:false
}).then(function(data) {
  console.log("此处已经拿到用户信息，可以做其他处理:"+da ta)
})