ionic3 获取微信授权登录

ionic3 获取微信授权登录，虽然插件齐全，但是还是遇到了不少坑。完整的亲测有效代码如下：

import { Wechat } from '@ionic-native/wechat';
import { HTTP } from '@ionic-native/http';

上面这两个插件就不用说了，能找到这里的都知道这两个是什么插件。主要是为什么要用HTTP这个插件，因为这个插件解决了获取微信授权跨域的问题，囧。


  //登录
  tapLogin() {
    try {
      // 1. 获取code
      let scope = "snsapi_userinfo";
      let state = "_" + (+new Date());
//1.先用插件获取到code
      Wechat.auth(scope, state, (response) => {
        console.log("获取code", response);
        alert("获取code:" + JSON.stringify(response));
        let appId = "";//你自己的id
        let appSecret = "";//你自己的
        let accessTokenUrl = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' + appId + '&secret=' + appSecret + '&code=' + response.code + '&grant_type=authorization_code'
//2.获取token，openid，等        
this.http.get(accessTokenUrl, {}, {})
          .then(data => {
            console.log(data.status);
            console.log(data.data); // data received by server
            console.log(data.headers);
            alert("data==" + JSON.stringify(data));

            //这个自己解析获取正确的accessToken
            let accessToken = data.data.access_token;
            let openId = data.data.openid;
            //3.获取个人信息
            let userInfoUrl = `https://api.weixin.qq.com/sns/userinfo?access_token=${accessToken}&openid=${openId}`;
            this.http.get(userInfoUrl, {}, {}).then(data => {
              console.log(data)
              alert("data2==" + JSON.stringify(data));

            }).catch(error => {
              alert("error==" + JSON.stringify(error))
              console.log(error.status);
              console.log(error.error); // error message as string
              console.log(error.headers);
            });
          })
          .catch(error => {
            alert("error==" + JSON.stringify(error))

            console.log(error.status);
            console.log(error.error); // error message as string
            console.log(error.headers);

          });
      }, (reason) => {
        alert("Failed: " + reason);
      });
    } catch (error) {
      alert("Failed: " + error);

      console.log(error);
    }

  }