GrabzIt API的检索方法

有两种方法可用于从GrabzIt的API检索屏幕截图，表格捕获和GIF动画，这两种方法各有优缺点。

异步方式

也称为回调方法，这是检索捕获的推荐方法。但是，它确实要求所构建的应用程序具有域名或公共可用的IP地址。可以使用此方法的一个示例是Web应用程序。

从该图中可以看出，异步方法的工作原理是将调用发送到GrabzIt，然后等待将调用发送回应用程序，表明屏幕快照已准备就绪。使用此方法的优点是它需要较少的调用，并允许其他进程（例如Web请求）继续进行int爆发。

下面显示了GrabzIt当前支持的每种服务器端语言的异步调用示例。

ASP.NET
Java的
Node.js的
Perl的
PHP
蟒蛇
红宝石

请记住，为了异步调用GrabzIt的API，您将需要实现此ASP.NET 处理器.

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
grabzIt.URLToImage("http://www.spacex.com");
grabzIt.Save("http://www.mywebsite.com/Home/Handler");

请记住，为了异步调用GrabzIt的API，您将需要实现此Java 处理器.

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
grabzIt.URLToImage("http://www.spacex.com");
grabzIt.Save("http://www.mywebsite.com/handler");

请记住，为了异步调用GrabzIt的API，您将需要实现此Node.js。处理器，但是不要将此与Node.js函数回调混淆。这里讨论的回调是通过Internet发送的HTTP回调！

var grabzit = require('grabzit');

var client = new grabzit("Sign in to view your Application Key", "Sign in to view your Application Secret");
client.url_to_image("http://www.spacex.com");
client.save("http://www.example.com/handler", function (error, id){
    if (error != null){
        throw error;
    }
});

请记住，为了异步调用GrabzIt的API，您将需要实现此Perl 处理器.

$grabzIt = GrabzItClient->new("Sign in to view your Application Key", "Sign in to view your Application Secret");
$grabzIt->URLToImage("http://www.spacex.com");
$grabzIt->Save("http://www.mywebsite.com/handler.pl");

请记住，为了异步调用GrabzIt的API，您将需要实现此PHP 处理器.

$grabzIt = new \GrabzIt\GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
$grabzIt->URLToImage("http://www.spacex.com");
$grabzIt->Save("http://www.mywebsite.com/handler.php");

请记住，为了异步调用GrabzIt的API，您将需要实现此Python 处理器.

grabzIt = GrabzItClient.GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret")
grabzIt.URLToImage("http://www.spacex.com")
grabzIt.Save("http://www.mywebsite.com/handler.py")

请记住，为了异步调用GrabzIt的API，您需要实现此Ruby 处理器.

grabzIt = GrabzIt::Client.new("Sign in to view your Application Key", "Sign in to view your Application Secret")
grabzIt.url_to_image("http://www.spacex.com")
grabzIt.save("http://www.mywebsite.com/handler/index")

同步方式

仅在无法使用异步方法的情况下才应使用此方法。同步方法的工作原理是，向GrabzIt发送调用以创建捕获，然后每隔几秒钟轮询一次GrabzIt，直到准备就绪为止，如图所示。

准备就绪后，它将照常下载捕获的内容。该技术的缺点是，它迫使当前进程等待捕获完成，这就是为什么它不适用于Web应用程序的原因。但是，优点是该应用程序不需要域名或IP地址，因此可以从桌面应用程序中使用。

下面显示了GrabzIt当前支持的每种服务器端语言的同步调用示例。

ASP.NET
Java的
JavaScript的
Node.js的
Perl的
PHP
蟒蛇
红宝石

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
grabzIt.URLToImage("http://www.spacex.com");
grabzIt.SaveTo("spacex.jpg");

GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
grabzIt.URLToImage("http://www.spacex.com");
grabzIt.SaveTo("spacex.jpg");

<script src="https://cdn.jsdelivr.net/npm/@grabzit/js@3.4.7/grabzit.min.js"></script>
<script>
GrabzIt("Sign in to view your Application Key").ConvertURL("http://www.spacex.com").Create();
</script>

var grabzit = require('grabzit');

var client = new grabzit("Sign in to view your Application Key", "Sign in to view your Application Secret");
client.url_to_image("http://www.spacex.com");
client.save_to("spacex.jpg", function (error, id){
    if (error != null){
        throw error;
    }
});

$grabzIt = GrabzItClient->new("Sign in to view your Application Key", "Sign in to view your Application Secret");
$grabzIt->URLToImage("http://www.spacex.com");
$grabzIt->SaveTo("spacex.jpg");

$grabzIt = new \GrabzIt\GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
$grabzIt->URLToImage("http://www.spacex.com");
$grabzIt->SaveTo("spacex.jpg");

grabzIt = GrabzItClient.GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret")
grabzIt.URLToImage("http://www.spacex.com")
grabzIt.SaveTo("spacex.jpg")

grabzIt = GrabzIt::Client.new("Sign in to view your Application Key", "Sign in to view your Application Secret")
grabzIt.url_to_image("http://www.spacex.com")
grabzIt.save_to("spacex.jpg")

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