问题描述：

配置flutter环境时，会使用flutter doctor命令来检查运行flutter的相关依赖是否配好。能看到还差 Android license status unknown.未解决。

C:\Users\ipkiss.wu>flutter doctor
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure you trust this source!
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.10.6, on Microsoft Windows [版本 10.0.19043.2006], locale zh-CN)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    X Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
[X] Visual Studio - develop for Windows
    X Visual Studio not installed; this is necessary for Windows development.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2022.2)
[√] VS Code
[√] Connected device (3 available)
[√] Network resources

! Doctor found issues in 2 categories.

在运行命令 flutter doctor --android-licenses 时报错

Microsoft Windows [版本 10.0.19043.2006]
(c) Microsoft Corporation。保留所有权利。

C:\Users\ipkiss.wu>flutter doctor --android-licenses
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure you trust this source!
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/sdklib/tool/sdkmanager/SdkManagerCli has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:632)
Android sdkmanager tool was found, but failed to run
(C:\Users\ipkiss.wu\AppData\Local\Android\sdk\cmdline-tools\latest\bin\sdkmanager.bat): "exited code 1".
Try re-installing or updating your Android SDK,
visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions.

C:\Users\ipkiss.wu>

主要问题：

has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 52.0

翻译：已由较新版本的Java运行时(类文件版本61.0)编译，此版本的Java运行时仅识别类文件版本52.0

因为我安装的flutter是最新版本的，而JDK是1.8版本，大胆猜测是jdk版本不兼容的问题。

C:\Users\ipkiss.wu>flutter --version
Flutter 3.10.6 • channel unknown • unknown source
Framework • revision f468f3366c (3 weeks ago) • 2023-07-12 15:19:05 -0700
Engine • revision cdbeda788a
Tools • Dart 3.0.6 • DevTools 2.23.1