1、检查java版本信息

java -version
java version "1.7.0_65"
OpenJDK Runtime Environment (rhel-2.5.1.2.el6_5-x86_64 u65-b17)
OpenJDK 64-Bit Server VM (build 24.65-b04,mixed mode)

2、如果没有则yum -y install java-1.7.0-openjdk下载并解压缩tomcat

cd /tmp
wget http://www.us.apache.org/dist/tomcat/tomcat-7/v7.0.54/bin/apache-tomcat-7.0.82.tar.gz
tar xzf apache-tomcat-7.0.54.tar.gz
mv apache-tomcat-7.0.54 /usr/local/tomcat7

3、启动tomcat

cd /usr/local/tomcat7
./bin/startup.sh

[输出样例]
Using CATALINA_BASE:  /usr/local/tomcat7
Using CATALINA_HOME:  /usr/local/tomcat7
Using CATALINA_TMPDIR: /usr/local/tomcat7/temp
Using JRE_HOME:        /opt/jdk1.8.0_05/jre
Using CLASSPATH:      /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar
Tomcat started.