废话不多说

直接代码

<template>
	<div id="cesiumContainer" style="height: 100vh;"></div>
	<div id="toolbar" style="position: fixed;top:20px;left:220px;">
		<el-breadcrumb>
			<el-breadcrumb-item>地形示例</el-breadcrumb-item>
			<el-breadcrumb-item>arcgis地形</el-breadcrumb-item>
		</el-breadcrumb>
	</div>
</template>
<script setup>
import {onMounted} from "vue";
import * as Cesium from "cesium";
import InitCesium from "../js/InitCesium.js";

onMounted(async () => {
	let initCesium = new InitCesium('cesiumContainer')
	let viewer = initCesium.initViewer({
		infoBox: false
	});

	viewer.scene.terrainProvider = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl('https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer')
})
</script>
<style scoped>
#cesiumContainer {
	overflow: hidden;
}
</style>
<style>
.el-breadcrumb__inner {
	color: #ffffff !important;
}
</style>

InitCesium.js

import * as Cesium from "cesium";

class InitCesium {

    constructor(cesiumContainer, options) {
        this.cesiumContainer = cesiumContainer;
    }

    initViewer(options) {
        Cesium.Ion.defaultAccessToken = 'token';
        return new Cesium.Viewer(this.cesiumContainer, options);
    }
}

export default InitCesium