arcgis for js实现地图截图、地图打印功能
更新时间:2024年12月21日 12:13:15 作者:我不当帕鲁谁当帕鲁
这篇文章主要介绍了arcgis for js实现地图截图、地图打印功能,本文通过实例代码给大家介绍的非常详细,感兴趣的朋友一起看看吧
地图截图
效果
实现
复制运行即可
要实现复杂的截图保存可以参考 官网案例
<!DOCTYPE html> <html lang="zn"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> #mapview { width: 100vw; height: 100vh; } * { margin: 0; padding: 0; } #btn { position: fixed; right: 30px; top: 10px; z-index: 999; width: 100px; height: 40px; cursor: pointer; } </style> <link rel="stylesheet" href="https://js.arcgis.com/4.23/esri/themes/light/main.css" rel="external nofollow" rel="external nofollow" /> <script src="https://js.arcgis.com/4.23/"></script> </head> <body> <button id="btn">地图截图</button> <div id="mapview"></div> <script> require(['esri/Map', 'esri/views/MapView', 'esri/layers/FeatureLayer'], function ( Map, MapView, FeatureLayer ) { // 初始化底图 window.map = new Map({ basemap: 'dark-gray-vector' }) // 创建2维视图 let view = new MapView({ container: 'mapview', map: map, zoom: 11, center: [104.783916597735, 32.55699155692144] // 设置地图的初始化中心点坐标 }) document.querySelector('#btn').addEventListener('click', function () { view .takeScreenshot({ area: { x: 0, y: 0, width: view.width, height: view.height }, format: 'png' }) .then(screenshot => { // 直接下载 const base64 = screenshot.dataUrl.toString() // imgSrc 就是base64哈 const byteCharacters = atob(base64.replace(/^data:image\/(png|jpeg|jpg);base64,/, '')) const byteNumbers = new Array(byteCharacters.length) for (let i = 0; i < byteCharacters.length; i++) { byteNumbers[i] = byteCharacters.charCodeAt(i) } const byteArray = new Uint8Array(byteNumbers) const blob = new Blob([byteArray], { type: undefined }) const aLink = document.createElement('a') aLink.download = '图片名称.jpg' //这里写保存时的图片名称 aLink.href = URL.createObjectURL(blob) aLink.setAttribute('crossOrigin', 'anonymous') aLink.click() }) }) }) </script> </body> </html>
地图打印
使用arcgis自带的打印组件,可自选导出格式,方向等等
缺点是如果地图上有MapImageLayer等图层就会失效
效果
实现
<!DOCTYPE html> <html lang="zn"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> #mapview { width: 100vw; height: 100vh; } * { margin: 0; padding: 0; } #btn { position: fixed; right: 30px; top: 10px; z-index: 999; width: 100px; height: 40px; cursor: pointer; } </style> <link rel="stylesheet" href="https://js.arcgis.com/4.23/esri/themes/light/main.css" rel="external nofollow" rel="external nofollow" /> <script src="https://js.arcgis.com/4.23/"></script> </head> <body> <button id="btn">地图打印</button> <div id="mapview"></div> <script> require([ 'esri/Map', 'esri/views/MapView', 'esri/layers/FeatureLayer', 'esri/Graphic', 'esri/widgets/Print' ], function (Map, MapView, FeatureLayer, Graphic, Print) { // 初始化底图 window.map = new Map({ basemap: 'dark-gray-vector' }) // 创建2维视图 let view = new MapView({ container: 'mapview', map: map, zoom: 11, center: [104.783916597735, 32.55699155692144] // 设置地图的初始化中心点坐标 }) document.querySelector('#btn').addEventListener('click', function () { const print = new Print({ view: view, label: '提取', // 最好指定为自己的打印服务 printServiceUrl: 'https://utility.arcgisonline.com/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task' }) // 将小部件添加到视图的右下角 view.ui.add(print, 'bottom-right') }) }) </script> </body> </html>
注意
打印服务最好使用自己的arcgisServer服务, 如何开启自行百度,当然这种事直接呼叫公司gis工程师咯
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