一种方法:
From the terminal and run the following command
sudo apt-get install tomcat7 tomcat7-docs tomcat7-admin tomcat7-examples
Answer yes at the prompt to install tomcat. This will install Tomcat and its dependencies, such as Java, and it will also create the tomcat7 user. It also starts Tomcat with its default settings.
another方法:http://my.oschina.net/amoswork/blog/387121
Ubuntu14.04 kylin 安装配置Tomcat7服务器：
放入当前登录用户根目录: ~
1、依旧是解压
tar –xzf apache-tomcat-7.0.40.tar.gz
得到apache-tomcat-7.0.40文件夹
2、改个名字，不然敲着蛋疼：
mv apache-tomcat-7.0.40 tomcat
3、放入/usr/local/
sudo mv tomcat /usr/local/
4、进入/usr/local/tomcat
cd /usr/local/tomcat
5、更改用户(安全第一嘛)
sudo chown -R root .
sudo chgrp -R root .
6、加环境变量
sudo su -
vi /etc/profile
最下方加入：
CATALINA_HOME=/usr/local/tomcat
export CATALINA_HOME
保存退出
7、进入$CATALINA_HOME/bin
cd $CATALINA_HOME/bin
8、修改catalina.sh
vi catalina.sh , 找到
# OS specific support. $var _must_ be set to either true or false.
在这行上面再定义一次CATALINA_HOME以及JAVA_HOME：
CATALINA_HOME=/usr/local/tomcat
JAVA_HOME=/usr/local/java/jdk1.7.0_21
保存退出
9、退出root登录，并尝试启动tomcat
logout
sudo ./bin/startup.sh
如果显示如下且无任何异常，则表示启动成功：
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/local/java/jdk1.7.0_21
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
10、停止tomcat： sudo ./bin/shutdown.sh
11、安装tomcat服务：
sudo cp bin/catalina.sh /etc/init.d/tomcat
查看服务：
sudo service tomcat status
列出一堆操作选项，即表示服务安装正常。
12、让tomcat开机启动
sudo update-rc.d –f tomcat defaults
13、通过服务启动个试试
sudo service tomcat start