IDEA不必使用JAVA_HOME变量.在项目设置中设置项目SDK(在您的情况下为JDK):文件->项目结构，在项目SDK中设置正确的路径.

IDEA doesn't necessary use JAVA_HOME variable. The project SDK (JDK in your case) is setup in the project settings: File -> Project Structure, Project SDK and set up the proper path there.