1、gradle编译报错
我不是用的ide编译的（因为ide中已经配置了jdk的目录了，所以并不会有问题）。
我是在代码的文件夹下面，使用cmd窗口来执行的命令，报了如下的错误
> Task :common:compileJava FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':common:compileJava'.
> Could not find tools.jar. Please check that C:\Program Files\Java\jre1.8.0_431 contains a valid JDK installation.
* 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
BUILD FAILED in 28s
2、解决方法
找到gradle.properties文件。加上jdk的目录配置
org.gradle.java.home=C:\Program Files\Java\jdk-1.8