我正在尝试使用html2canvas捕获必应地图的屏幕截图。据我所知,我需要使用代理来允许捕获外部图像。我看到这个建议的用途。但我真的没有看到任何关于如何使用它的建议(例如一个例子(。有人有例子吗?我正在使用带有承诺的最新版本。谢谢!
嗨,
我在解决这个问题,在我的情况下,地图工作完美,要配置代理,只需在 html2canvas 脚本中添加此行:
function makeScreenshot()
{
html2canvas(document.getElementById("bingMap"), {
proxy:'',
type: 'view',
logging: true,
userCORS: true,
ignoreElements:(showDashboard)=>{return false},
Timeout:(5000)
})
.then(canvas =>
{
canvas.id = "canvasID";
var main = document.getElementById("main");
//while (main.firstChild) { main.removeChild(main.firstChild); }
setTimeout(function(){main.appendChild(canvas);},5000);
});
}
document.getElementById("a-make").addEventListener('click', function()
{
document.getElementById("a-make").style.display = "none";
makeScreenshot();
document.getElementById("a-download").style.display = "inline";
}, false);
document.getElementById("a-download").addEventListener('click', function()
{
this.href = document.getElementById("canvasID").toDataURL();
this.download = "canvas-map.png";
}, false);
"代理"可以是空白的,也可以阅读这个(HTML2canvas PHP proxy(,在必应地图的脚本中,你需要启用CORS:
var loc = new Microsoft.Maps.Location(urlatmap, urlngmap)
mapOptions = {
credentials: bingkey,
center: loc,
zoom: 16,
mapTypeId: Microsoft.Maps.MapTypeId.aerial,
showDashboard: false,
enableCORS: true//for canvas img
}