如何修复Gradle在Linux上无法识别Java 10？

Question

在Linux上使用Java 10的最新Gradle版本时,它无法将Java的版本号标识为10作为有效的Java版本.如何在Linux机器上解决这个问题？在此处记录错误的详细信息

这是完整的错误报告(NB正在运行gradle --version或gradle -v也提供相同的输出:

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine java version from '10'.

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

编辑:输出 gradle --stacktrace

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine java version from '10'.

* Try:
Run with --info or --debug option to get more log output.

* Exception is:
java.lang.IllegalArgumentException: Could not determine java version from '10'.
at org.gradle.api.JavaVersion.toVersion(JavaVersion.java:70)
at org.gradle.api.JavaVersion.current(JavaVersion.java:80)
at org.gradle.internal.jvm.UnsupportedJavaRuntimeException.assertUsingVersion(UnsupportedJavaRuntimeException.java:29)
at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:32)
at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:210)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:174)
at org.gradle.launcher.Main.doAction(Main.java:33)
at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:60)
at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:37)
at org.gradle.launcher.GradleMain.main(GradleMain.java:23)

输出java --version

java 10 2018-03-20
Java(TM) SE Runtime Environment 18.3 (build 10+46)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10+46, mixed mode)

Answer 1

您需要升级Gradle.4.5.1及更高版本肯定支持Java 10.

如果您认为已经安装了4.5.1或更高版本,但gradle -version仍然无法运行,那么当您gradle在命令行输入时,由于某种原因,它仍然可以运行旧版本.

做一个共同点是别名gradle来./gradlew,以便在摇篮项目的情况下,你会使用包装摇篮,而不是系统的摇篮.这通常很有帮助,但在这种情况下,它会适得其反.您应该能够确定已安装的系统Gradle which:

> which gradle
/usr/local/bin/gradle
> $(which gradle) -version

------------------------------------------------------------
Gradle 4.6
------------------------------------------------------------

Build time:   2018-02-28 13:36:36 UTC
Revision:     8fa6ce7945b640e6168488e4417f9bb96e4ab46c

Groovy:       2.4.12
Ant:          Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM:          10.0.1 ("Oracle Corporation" 10.0.1+10)
OS:           Mac OS X 10.13.4 x86_64

(我已经省略了一些关于非法反射访问的警告,如果你得到它们,不要担心它们.)

如果$(which gradle) -version仍然无法运行,则需要升级系统gradle.但如果确实如此,要更新Gradle包装器,您可以编辑build.gradle-

task wrapper(type: Wrapper) {
  gradleVersion = '4.6'
}

- 然后使用系统Gradle重新运行wrapper任务:

> $(which gradle) wrapper
Starting a Gradle Daemon (subsequent builds will be faster)

BUILD SUCCESSFUL in 7s
1 actionable task: 1 executed
> ./gradlew -version
Downloading https://services.gradle.org/distributions/gradle-4.6-bin.zip
......................................................................

[etc.]

------------------------------------------------------------
Gradle 4.6
------------------------------------------------------------

Build time:   2018-02-28 13:36:36 UTC
Revision:     8fa6ce7945b640e6168488e4417f9bb96e4ab46c

Groovy:       2.4.12
Ant:          Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM:          10.0.1 ("Oracle Corporation" 10.0.1+10)
OS:           Mac OS X 10.13.4 x86_64