Neither the JAVA_HOME nor the JRE_HOME environment variable is defined At least one of these environment variable is needed to run this program
开启tomcat时出现以上错误
// 进入root帐户 在普通用户也可以
sudo -s
//用编辑器打开.bashrc文件
gedit .bashrc 在普通用户下注意加上sudo
//在最后一行添加环境变量(文件位置根据自己的实际情况)
JAVA_HOME=/usr/local/java/jdk1.7.0_67
CLASSPATH=.:/usr/local/java/jdk1.7.0_67/lib
JRE_HOME=/usr/local/java/jdk1.7.0_67/jre
PATH=$PATH:/usr/local/java/jdk1.7.0_67/bin
//重启生效。
//给tomcat文件夹及所有文件赋予权限777
chmod 777 /opt/tomcat -R
//开启tomcat服务
/opt/tomcat/bin/startup.sh
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