小程序 获取用户的openid

wx.login({

success: res => {

var code = res.code; //返回code

// 小程序appid

var appId = 'wxd751fc845c90fbd8';

// 小程序密钥

var secret = '6af97b8d384a4c6d7028b77784de997a';

wx.request({

url: 'https://api.weixin.qq.com/sns/jscode2session?appid=' + appId + '&secret=' + secret + '&js_code=' + code + '&grant_type=authorization_code',

data: {},

header: {

'content-type': 'json'

},

success: function (res) {

// console.log(res)

var openid = res.data.openid

// console.log(openid)

that.globalData.userId = openid

}

})

}

});

来源：https://www.cnblogs.com/dianzan/p/7797722.html