react native是否支持jdk 17？

Question

因此，在android上启动最初的react原生模板项目时，我遇到了一些问题。在咨询某人之后，我被告知jdk 17不受支持。但我真的不想降级，因为这可能会破坏我已经拥有和处理的其他东西。具体来说，这是我得到的错误：

> Task :app:processDebugMainManifest FAILED
11 actionable tasks: 2 executed, 9 up-to-date

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugMainManifest'.
> Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @7ec6bc9b

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. 

* Get more help at https://help.gradle.org

BUILD FAILED in 20s

error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081


* What went wrong:
Execution failed for task ':app:processDebugMainManifest'.
> Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @7ec6bc9b

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. 
* Get more help at https://help.gradle.org

BUILD FAILED in 20s

    at makeError (C:\Users\karti\Desktop\ShoppingList\node_modules\execa\index.js:174:9)
    at C:\Users\karti\Desktop\ShoppingList\node_modules\execa\index.js:278:16
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async runOnAllDevices (C:\Users\karti\Desktop\ShoppingList\node_modules\@react-native-community\cli-platform-android\build\commands\runAndroid    at async Command.handleAction (C:\Users\karti\Desktop\ShoppingList\node_modules\@react-native-community\cli\build\index.js:192:9)

我已经看了这个，没有任何工作。Gradle：任务执行失败：进程DebugManifest

Answer 1

所以我通过在我的系统上安装JDK 16解决了这个问题，一切都解决了，运行良好。我不知道问题是出在Gradle还是JDK还是反应本机上，但希望将来jdk 17得到支持。

如果你有同样的问题，那么你可以去： jdk 16

1）下载并安装JDK 16。

2） 将路径添加到系统环境变量path中的jdk中。

3）打开cmd并执行java-version，您应该会看到类似的内容

java version "16.0.2" 2021-07-20
Java(TM) SE Runtime Environment (build 16.0.2+7-67)
Java HotSpot(TM) 64-Bit Server VM (build 16.0.2+7-67, mixed mode, sharing)

Answer 2

要知道这是否与java版本有关，需要检查Gradle版本。

目前只有Gradle 7.3版支持java 17。

您可以检查gradle兼容性矩阵以进行检查。

您可以通过输入gradlew.bat-version来检查您的版本

如果您的Gradle是7.3版，那么它与JDK版本无关。