1、uniapp官网webview地址

2、uniapp中vue文件代码

uniapp通过路由传值给网页

<template>
	<view class="content" style="z-index: 9999999;">
		<view class="status-bar"></view>
		<web-view :src="htmlUrl" @message="handleMessage"></web-view>
	</view>
</template>

<script>
	var wv = null;
	export default {
		data() {
			return {
				htmlUrl: getApp().globalData.webUrl + "/#/dcim-device-map?token=" + uni.getStorageSync(lifeData).token +
					"&refreshToken=" + uni.getStorageSync("refreshToken") + "&expiresIn=" + uni.getStorageSync(
						"expiresIn")
			}
		},
		onReady() {
			// #ifdef APP-PLUS
			var currentWebview = this.$scope
				.$getAppWebview() //此对象相当于html5plus里的plus.webview.currentWebview()。在uni-app里vue页面直接使用plus.webview.currentWebview()无效
			setTimeout(function() {
				wv = currentWebview.children()[0]
				wv.setStyle({
					top: 25
				})
			}, 1000); //如果是页面初始化调用时，需要延时一下
			// #endif
		},
		mounted() {
			// 强制横屏
			plus.screen.lockOrientation(landscape-primary);
			console.log(this.htmlUrl)
		},
		methods:{
			handleMessage(res){
				console.log("成功接收到网页传的消息：",res)
			}
		},
		// 监听返回键
		onBackPress() {
			if (wv != "" && wv != null) {
				wv.close();
				wv = null;
			}
			uni.$u.route({
				type: redirect,
				url: pages/home/index
			})
		},
		beforeDestroy() {
			plus.screen.lockOrientation(portrait-primary);
			if (wv != "" && wv != null) {
				wv.close();
				wv = null;
			}
		}
	}
</script>

<style scoped>
	body,
	html {
		background-color: rgb(0, 19, 39);
	}

	.status-bar {
		height: var(--status-bar-height);
		min-height: var(--status-bar-height);
		width: 100%;
	}

	.content {
		height: 100%;
		width: 100%;
		margin: 0;
		padding: 0;
		background-color: rgb(0, 19, 39);
	}
</style>

3、webview链接的远程网页代码

<template>
  <div class="overview">
    <!--更换空间-->
    <el-row>
      <el-col :lg="8" :md="8" :sm="8" :xl="8" :xs="8" style="text-align: right">
        <div style="line-height: 40px;vertical-align: center;margin-right: 1.3vw" @click="closeMapToDcimApp">
          <img src="../../../assets/images/dcim_app_h5/mapBack.png">
          <a class="pointer text-white" style="margin-left: 5px;">退出地图</a>
        </div>
      </el-col>
    </el-row>

  </div>
</template>

<script>

export default {
  name: "Overview",
  data() {
    return {
      
    };
  },
  methods: {
    // 退出地图
    closeMapToDcimApp() {
      this.$confirm(确定要退出地图地图吗？, {
        cancelButtonText: 取消,
        confirmButtonText: 确定,
        callback: action => {
          if (action === confirm) {
            // eslint-disable-next-line no-undef
            uni.postMessage({
              data: {
                name:"小明",
                age:"20"
              },
            })
          }
        }
      })
    }
  }
}
</script>

<style scoped>
</style>

4、vue引入uniapp的JS 

<script type="text/javascript" src="https://unpkg.com/@dcloudio/uni-webview-js@0.0.3/index.js"></script>

最新uniapp JS以官方文档为准

5、到此uniapp使用webview内置网页与app通讯就实现了