微信小程序封装的Promise工具类 ES6语法

亦凉 2023-06-16 11:59 14阅读 0赞

这个是工具类的方法，因为首页初次加载要加载很多请求，并且是依次执行。

首页

//首页加载页面的所有执行方法
      executeMethodList() { 
        this.getSysTemConfig().then(() => { //读取配置信息
        this.getBanner().then(() => { //获取轮播图
          this.getGroupOrder().then(() => { //获取拼团列表
                  
          }) 
        })
        })
      },
      //读取配置信息
      getSysTemConfig() { 
        let that = this
        return requestPromiseRes(
          url.url.getSysTemConfig,
          { 
    
          }
        ).then((res) => { 
          app.globalData.defaultCity = res.default_city//默认推广的城市
          pageParams.pageParams.endTimeScope = parseInt(res.group_over_time)//拼团结束的事件
          app.globalData.appointmentTimeDay = res.order_guide_time//推广的天数
        
        }).catch((e) => {  console.log("回调失败" + e); })
      },
      
      //读取轮播图
      getBanner() { 
        let that = this
        return requestPromiseRes(
          url.url.getBanner,
          { 
            tourist_id: app.globalData.touristId,
          }
        ).then((res) => { 
          that.setData({ 
            "bannerList": res.adsense
          })
          }).catch((e) => {  console.log("回调失败" + e); })
      },

首页初次加载获取openId

getAuthKey: function() { 
        var that = this;
        return new Promise(function(resolve, reject) { 
          // 登录从后台读取openId
          wx.login({ 
            success(res) { 
              console.log(res)
              if (res.code) { 
                // 发送 res.code 到后台换取 openId, sessionKey, unionId
                wx.request({ 
                  url: url.url.getOpenId,
                  data: { 
                    code: res.code
                  },
                  success: function(res) { 
                    console.log(res)
                    if (res.data.code == '200') { 
                      //告知页面开始授权访问
                      pageParams.pageParams.isState = "2" //告知页面授权访问
    
                      //openId
                      //将获取的openid赋值到全局变量
                      that.globalData.openId = res.data.openId;
                      //存储tourist对象与touristId 赋值
                      if (res.data.tourist) { 
                        that.globalData.touristId = res.data.tourist.tourist_id;
                        // that.globalData.touristId = "22fc3a89cebc4bb7827faad93d21820e7"
                        that.globalData.tourist = res.data.tourist;
                      }
                      var res = { 
                        status: 200,
                      }
                      resolve(res);
                    } else if (res.data.code == '401' || res.data.code == '402' || res.data.code == '403') { 
                      //将获取的openid赋值到全局变量
                      that.globalData.openId = res.data.openId;
                      console.log("用户未绑定跳转")
                      wx.navigateTo({ 
                        url: '../register/register'
                      });
                    }
                  },
                })
              } else { 
                var res = { 
                  status: 300,
                }
                reject(res);
                console.log("获取参数异常");
              }
            }
          })
        });
      },