uniapp怎么申请微信登录

<button  class="confirm-btn" @click="weixinLo">微信登录</button>

weixinLo() {			let that = this;			uni.login({provider: 'weixin',success: function(loginRes) {	that.$queue.showLoading('正在登录中...');	console.error(loginRes.authResult);//获取登录的tokenthat.$queue.setData('weixinToken',loginRes.authResult.access_token);//获取登录的unionid 这个还是在开放平台做了 公众号 小程序 微信登录app关联才会有	that.$queue.setData('unionid', loginRes.authResult.unionid);//获取openid	that.$queue.setData('weixinOpenid', loginRes.authResult.openid);//这里吧数据全部提交给后台核验，有没有注册 注册了 后台代码会请求接口String s = HttpClient.doGet("https://api.weixin.qq.com/sns/userinfo?access_token=" + loginInfo.getToken() + "&openid=" + loginInfo.getOpenid()); 获取头像和昵称	that.$Request.postJson('/user/loginApp', {	token: loginRes.authResult.access_token,	unionid: loginRes.authResult.unionid,	openid: loginRes.authResult.openid}).then(res => {	if (res.status === 0) {		//绑定手机号直接登录		that.getUserInfo(res.data.userId, res.data.uuid);	} else {		//没有绑定手机号让绑定手机号		uni.navigateTo({			url: '/pages/public/wxmobile'		});	}});}			});		},