study_wxapp/app.js

const {  $Message} = require('/component/iView/base/index');
const md5 = require('./utils/md5.js');
const secret= "117c0743819088468e590246464cc75e"

App({
  globalData: {
    // baseAPI: "http://dev.ndjsxh.cn:8888/weixin/",
    baseAPI:"http://localhost:8000/weixin/",
    pageSize: 10,
    userInfo: {},
  },
  onLaunch: function() {

  },
  doLogin: function(cb){
    let _this = this
    wx.login({
      success(wxres) {
        if (wxres.code) {
          _this.formPost('Auth.wxLogin', {
            "code": wxres.code
          }).then(res => {
            if (res.code == 200) {
              _this.setUserInfo( res.data )
              cb && cb( res.data );
            } else if (res.code == 401) {
              wx.reLaunch({
                url: '/pages/user/register/index',
              });
            } else {
              _this.message(res.message, 'error')
            }
          }).catch(e => {
            _this.message(e, 'error')
          })
        } else {
          _this.message(res.errMsg, 'error')
        }
      }
    })
  
  },
  message: function(content, type) {
    $Message({
      content: content,
      type: type
    });
  },
  reLogin( cb ){
    this.globalData.userInfo = {};
    this.checkLogin( cb )
  },
  checkLogin: function(cb){
    let userInfo = this.globalData.userInfo;
    if (!userInfo || !userInfo.token) {
      this.doLogin( cb  )
    }else{
      cb&&cb( userInfo )
    }
  },
  formPost: function(action, data) {
    let _this = this
    const token = wx.getStorageSync('token')
    const user_id = wx.getStorageSync('userId')||""
		let timestamp = Date.now()
		action = action.toLowerCase()
    let signstr=`weixin_${token}_${action}_${timestamp}_${secret}`
    let signsure = md5.md5( signstr ).toLowerCase()
    let headers = {
      'Content-Type': 'application/json',
      'x-signsure': signsure,
      'x-timestamp': timestamp,
      'x-userId': user_id
    }
    return new Promise(function(resolve, reject) {
      wx.showNavigationBarLoading();
      wx.request({
        url: _this.globalData.baseAPI + action,
        header: headers,
        method: 'POST',
        data,
        success(res) {
          if (res.statusCode !== 200 || typeof res.data !== 'object') {
            reject('网络出错')
            return false;
          }
          if( res.data.code == 200){
            resolve(res.data);
            return true;
          }

          if (res.data.code === 401) {
            wx.reLaunch({
              url: '/pages/user/bind/index',
            });
            return false;
          } 
          reject(res.data.msg)
          return false
        },
        fail(res) {
          reject(res.errMsg)
          return false;
        },
        complete(res) {
          wx.hideNavigationBarLoading();
        }
      })
    })
  },
  setUserInfo:function(userInfo){
    this.globalData.userInfo = userInfo;
    wx.setStorageSync('token', userInfo.token )
    wx.setStorageSync('userId', userInfo.userId)
  }
})