有偿求获取微信小程序的code,signature

有偿求获取微信小程序的code,signature，求怎么能够获取微信小程序的code，signature

获取code参考
http://t.csdn.cn/o61Dt
获取signature参考
http://www.ionic.wang/weixin/api/signature.html

现在要获取登录 需要2步骤
wx.getUserProfile({
desc: '微信登录',
success: res => {

    wx.login({
     success(res) {
       console.log('login code',res);
     
           wx.request({
             url: , // 目标服务器url
             header:{'content-type':'application/x-www-form-urlencoded'},
             method:'POST',
             data: {
               ac: 'wx_login',
               nickName: app.globalData.userInfo.nickName,
               logo: app.globalData.userInfo.avatarUrl,
               city: app.globalData.userInfo.city,
               province: app.globalData.userInfo.province,
               encryptedData: res.encryptedData,
               iv: res.iv,
               sign: res.signature, 
               code: res.code,
               
               
             },
             success: (res) => {console.log(res.data)

//登录成功后操作

             }
           }); 
         },

     fail(res) {
       console.log(`login调用失败`);
     }
   });

   }
 })

后台用appid和密匙进行获取即可