Gradle遇错一：Execution failed for task ':compileJava'. Could not find tools.jar

错误现象：

E:\test>gradle build
:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Could not find tools.jar

原因分析：

这个提示很明显是找不到JDK。所以需要设置一下JDK信息。

解决办法：

设置环境变量JAVA_HOME;并添加%JAVA_HOME%/bin到path中。