安装Xamarin错误？

当我尝试安装Xamarin时，几分钟后我的安装失败了。我得到一个记事本，上面有这个错误：：

由于一个或多个程序包故障，产品无法安装列出的工作负载和组件

Incomplete workloads
    Mobile development with .NET (Microsoft.VisualStudio.Workload.NetCrossPlat,version=15.0.26403.0)

Incomplete components
    Android SDK setup (API level 23) (Component.Android.SDK23,version=15.0.26208.0)
    Google Android Emulator (API Level 23) (Component.Google.Android.Emulator.API23.V2,version=15.0.26208.0)
    Intel Hardware Accelerated Execution Manager (HAXM) (Component.HAXM,version=15.0.26208.0)
    Java SE Development Kit (8.0.1120.15) (Component.JavaJDK,version=15.0.26403.0)

You can search for solutions using the information below, modify your selections for the above workloads and components and retry the installation, or remove the product from your machine.

Following is a collection of individual package failures that led to the incomplete workloads and components above. To search for existing reports of these specific problems, please copy and paste the URL from each package failure into a web browser. If the issue has already been reported, you can find solutions or workarounds there. If the issue has not been reported, you can create a new issue where other people will be able to find solutions or workarounds.

Package 'JavaJDKV2,version=1.8.1,chip=x86' failed to download from 'https://go.microsoft.com/fwlink/?LinkID=842899'.
    Search URL: https://aka.ms/VSSetupErrorReports?q=PackageId=JavaJDKV2;PackageAction=DownloadPackage;ReturnCode=0x80131509
    Impacted workloads
        Mobile development with .NET (Microsoft.VisualStudio.Workload.NetCrossPlat,version=15.0.26403.0)
    Impacted components
        Android SDK setup (API level 23) (Component.Android.SDK23,version=15.0.26208.0)
        Google Android Emulator (API Level 23) (Component.Google.Android.Emulator.API23.V2,version=15.0.26208.0)
        Intel Hardware Accelerated Execution Manager (HAXM) (Component.HAXM,version=15.0.26208.0)
        Java SE Development Kit (8.0.1120.15) (Component.JavaJDK,version=15.0.26403.0)
    Details
        WebClient download failed: The remote server returned an error: (404) Not Found.
        Bits download failed: Error context: BG_ERROR_CONTEXT_REMOTE_FILE, Error code: -2145844844
        WinInet download failed: Url 'http://download.oracle.com/otn-pub/java/jdk/8u112-b15/jdk-8u112-windows-i586.exe?AuthParam=1495491711_f7e41fbdd9ffae16fa075397d1b93914' returned HTTP status code: 404

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Oracle下载链接不起作用。因此，您应该再试一次，或者与您的网络管理员联系以了解原因。Oracle URL似乎发生了更改