不能用gradle和jdk 11构建jar

Question

当我尝试使用gradle和jdk 11创建jar构建时，总是会出现以下错误：

10:53:41: Executing task 'build'...

> Task :compileJava
> Task :compileJava UP-TO-DATE
> Task :processResources UP-TO-DATE
> Task :classes UP-TO-DATE
> Task :bootJar UP-TO-DATE
> Task :jar SKIPPED
> Task :assemble UP-TO-DATE
> Task :compileTestJava UP-TO-DATE
> Task :processTestResources NO-SOURCE
> Task :testClasses UP-TO-DATE
> Task :test FAILED
> Task :jacocoTestReport UP-TO-DATE

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':test'.
> failed to read class file /home/rodrigo/Projetos/Gaia/apipessoas/build/classes/java/test/com/rjdesenvolvimento/apipessoas/ApipessoasApplicationTests.class

* 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

Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
See https://docs.gradle.org/4.8.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 1m 9s
6 actionable tasks: 1 executed, 5 up-to-date
Unsupported class file major version 55
10:54:50: Task execution finished 'build'.

我迷路了，需要帮助。我尝试将mavencentral（）存储库更改为jcenter，但没有成功。

任务：更新类

任务：bootjar更新

任务：JAR

警告：发生非法反射访问操作警告：org.springframework.cglib.core.reflectutils$1（文件：/home/rodrigo/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.0.9.release/9f9a828936d81afd493bda9cc1aed863a0d85/spring-core-5.0.9.release.jar)对方法java.lang.classloader.defineClass(java.lang.string,byte[],int,ingframework.cglib.core.reflectutils$1警告：使用--illegal-access=warn启用进一步非法反射访问操作的警告警告：所有非法访问操作都将在以后的版本中被拒绝

com.rjdesenvolvimento.apipessoas.apipessoasApplicationTests>contextLoads失败

IllegalStateException

由：org.springframework.beans.factory.UnsatisfiedDependencyException引起

由：org.springframework.beans.factory.UnsatisfiedDependencyException引起

由：org.springframework.beans.factory.BeanCreationException引起

任务：测试失败任务：JacocoTestReport

失败：生成失败，出现异常。

错误：任务“：test”执行失败。有失败的测试。请参见：file：///home/rodrigo/projetos/gaia/apipessoas/build/reports/tests/test/index.html

Answer 1

你使用的是哪个版本的Gradle？通过查看日志，我可以猜测是4.8.1。根据GitHub上的问题，他们修复了Gradle，使其能够在4.10.2版本中与Java11一起工作，所以您所要做的就是将Gradle升级到这个版本或更高的版本。如果使用Gradle包装器，则只需编辑项目中的Gradle/wrapper/gradle-wrapper.properties文件，然后将distributionURL更新为以下文件：

distributionUrl=https://services.gradle.org/distributions/gradle-4.10.2-all.zip

很可能，您也可以在项目目录中以以下方式进行：

gradle wrapper --gradle-version 4.10.2

它应该更新或创建gradle-wrapper.properties文件。

完成后，可以调用包装器：

./gradlew clean build