电脑环境变量
CLASSPATH
.;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar
JAVA_HOME
H:\Java\jdk1.8.0_152
M2_HOME
J:\apache-maven-3.5.2-bin\apache-maven-3.5.2
Path
%USERPROFILE%\AppData\Local\Microsoft\WindowsApps;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;F:\mysql-5.7.20-winx64\mysql-5.7.20-winx64\bin;%M2_HOME%\bin