①java_home:…\jdk7 (jdk安装路径)②classpath: .;%JAVA_HOME%\lib;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar 注意前面的小数点。③path: ;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;参考:https://jingyan.baidu.com/article/ff41162596a77912e4823716.html