mall-front-app/pages/index/login.vue

<!-- 微信公众号的登录回调页 -->
<template>
	<!-- 空登陆页 -->
	<view />
	<view>
		登录
	</view>
</template>

<script setup>
	import sheep from '@/sheep';
	import {
		onLoad
	} from '@dcloudio/uni-app';
	import {
		showAuthModal, 
		closeAuthModal,
	} from '@/sheep/hooks/useModal';

	onLoad(async (options) => {
		// #ifdef H5
		// 将 search 参数赋值到 options 中，方便下面解析
		new URLSearchParams(location.search).forEach((value, key) => {
			options[key] = value;
		});
		const event = options.event;
		const code = options.code;
		const state = options.state;
		if (event === 'login') { // 场景一：登录
			await sheep.$platform.useProvider().login(code, state).then((res)=>{
				console.log(res)
				if (!res) {
					console.log("返回第一次登录了", res)
					showAuthModal("officialAccountFirstLogin")
				}
			});
			return false
		} else if (event === 'bind') { // 场景二：绑定
			sheep.$platform.useProvider().bind(code, state);
		}

		// 检测 H5 登录回调
		let returnUrl = uni.getStorageSync('returnUrl');
		if (returnUrl) {
			uni.removeStorage('returnUrl');
			location.replace(returnUrl);
		} else {
			uni.switchTab({
				url: '/',
			});
		}
		// #endif
	});
</script>