Could not find tools.jar when build gradle project

参考网址：https://stackoverflow.com/questions/45456210/could-not-find-tools-jar-when-build-gradle-project

执行：

gradlew.bat clean build -x test

出错信息：

Parallel execution with configuration on demand is an incubating feature.
> Task :compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Could not find tools.jar. Please check that D:Javajre contains a valid JDK installation.

解决：

在根目录下新建一个gradle.properties，在其中加上一行即可：

org.gradle.java.home=C:/path/to/your/jdk