小爬虫

JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home JAVA_7_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home MAVEN_HOME=/usr/local/maven/apache-maven-3.5....

mac 系统变量加载顺序； /etc/profile /etc/paths ~/.bash_profile ~/.bash_login ~/.profile ~/.bashrc

终端执行：/usr/libexec/java_home -V liucongdeMacBook-Pro:~ liucong$ /usr/libexec/java_home -V Matching Java Virtual Machines (2): 1.8.0_131, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1...