我确实已经安装了openjfx(通过dnf)，并且我相信它正在寻找的jar是在以下路径中安装的jar:
/usr/lib/jvm/openjfx/lib/ant-javafx.jar
显然，我想避免像这样对jar路径进行硬编码，但是我什至没有找到使用该路径的方法。这是gradle输出:
$ gradle tasks
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'testproj'.
> Couldn't find Ant-JavaFX-library, please make sure you've installed some JDK which includes JavaFX (e.g. OracleJDK or OpenJDK and OpenJFX), and JAVA_HOME is set properly.
* 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.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/4.9/userguide/command_line_interface.html#sec:command_line_warnings
BUILD FAILED in 0s
和
gradle --version:WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/home/travis/opt/gradle/4.9/lib/groovy-all-2.4.12.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
------------------------------------------------------------
Gradle 4.9
------------------------------------------------------------
Build time: 2018-07-16 08:14:03 UTC
Revision: efcf8c1cf533b03c70f394f270f46a174c738efc
Kotlin DSL: 0.18.4
Kotlin: 1.2.41
Groovy: 2.4.12
Ant: Apache Ant(TM) version 1.9.11 compiled on March 23 2018
JVM: 10.0.2 ("Oracle Corporation" 10.0.2+13)
OS: Linux 4.18.9-200.fc28.x86_64 amd64
最佳答案
似乎没有一个好的答案，除了暂时坚持使用Java 8。
正如Some Guy在评论中提到的那样，某个新的Gradle插件可能会在某个时候取代该插件，但作者FibreFoX writes表示“请尽可能长时间使用该插件的当前状态”。这似乎意味着被卡在类路径中随JavaFX一起提供的Java的旧版本上了。
顺便说一句，考虑到新的java依赖DAG系统，维护插件的问题可能与打包有关。 8是使用旧类路径系统的最新版本。
我很高兴找到一个更好的答案。
关于gradle - 我正在使用javafx-gradle-plugin，构建失败并显示 “Couldn'找不到Ant-JavaFX-library。如何指定JavaFX位置？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52655216/