一. tomcat安装配置
1. 什么是tomcat
Tomcat就是用来解析jsp程序的一个软件
Tomcat是Apache 软件基金会（Apache Software Foundation）的Jakarta项目中的一个核心项目，由Apache、Sun和其他一些公司及个人共同开发而成。
Tomcat是一个轻量级应用服务器，在中小型系统和并发访问用户不是很多的场合下被普遍使用，是开发和调试JSP程序的首选。
2.安装GDK
JDK(Java Development Kit) 是 Java 语言的软件开发工具包(SDK)。没有JDK的话，无法编译Java程序。
下载jdk 本篇使用的版本为jdk-8u45-linux-i586.tar.gz
[root@webserver ~]# tar zxvf jdk-8u45-linux-i586.tar.gz
[root@webserver ~]# mv jdk1.8.0_45 /usr/local/
[root@webserver ~]# vi /etc/profile.d/java.sh
JAVA_HOME=/usr/local/jdk1.8.0_45
JAVA_BIN=/usr/local/jdk1.8.0_45/bin
JRE_HOME=/usr/local/jdk1.8.0_45/jre
PATH=$PATH:/usr/local/jdk1.8.0_45/bin:/usr/local/jdk1.8.0_45/jre/bin
CLASSPATH=/usr/local/jdk1.8.0_45/jre/lib:/usr/local/jdk1.8.0_45/lib:/usr/local/jdk1.8.0_45/jre/lib/charsets.jar
[root@webserver ~]# . /etc/profile.d/java.sh
[root@webserver ~]# java -version //查看安装java的版本
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) Client VM (build 25.45-b02, mixed mode)
3.安装tomcat
[root@webserver ~]# cd /usr/local/src/
[root@webserver src]# wget http://apache.fayea.com/tomcat/tomcat-7/v7.0.62/bin/apache-tomcat-7.0.62.tar.gz
[root@webserver src]# tar zxf apache-tomcat-7.0.62.tar.gz
[root@webserver src]# mv apache-tomcat-7.0.62 /usr/local/tomcat
[root@webserver src]# cp -pv /usr/local/tomcat/bin/catalina.sh /etc/init.d/tomcat
"/usr/local/tomcat/bin/catalina.sh" -> "/etc/init.d/tomcat"
[root@webserver src]# vi /etc/init.d/tomcat //从第二行加入
# chkconfig: 2345 63 37
# description: tomcat server init script
# Source Function Library
. /etc/init.d/functions
JAVA_HOME=/usr/local/jdk1.8.0_31
CATALINA_HOME=/usr/local/tomcat
[root@webserver src]# chmod 755 /etc/init.d/tomcat
[root@webserver src]# chkconfig --add tomcat
[root@webserver src]# chkconfig tomcat on
[root@webserver src]# service tomcat start
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/local/jdk1.8.0_45
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.
[root@webserver src]# ps aux |grep tomcat
root 1518 10.0 4.7 339000 48932 pts/1 Sl 04:03 0:04 /usr/local/jdk1.8.0_45/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat/endorsed -classpath /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/local/tomcat/temp org.apache.catalina.startup.Bootstrap start
root 1536 0.0 0.0 5980 728 pts/1 S+ 04:03 0:00 grep tomcat
4.配置tomcat
更改默认启动端口：
[root@webserver src]# cd /usr/local/tomcat
[root@webserver conf]# vim conf/server.xml //把Connector port=“8080” 改为 Connector port="80"
-->
<Connector port="80" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
5.配置新虚拟主机：
[root@webserver conf]# vi /usr/local/tomcat/conf/server.xml //找到</Host>下一行插入新的<Host>内容如下:
<Host name="www.111.com" appBase="/data/tomcatweb"
unpackWARs="false" autoDeploy="true" xmlValidation="false"
xmlNamespaceAware="false">
<Context path="" docBase="./" debug="0" reloadable="true" crossContext="true"/>
</Host>
[root@webserver conf]# mkdir /data/tomcatweb
[root@webserver conf]# /etc/init.d/tomcat stop
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/local/jdk1.8.0_45
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
[root@webserver conf]# /etc/init.d/tomcat start
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr/local/jdk1.8.0_45
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.
[root@webserver conf]# netstat -lnp |grep 80
tcp 0 0 ::ffff:127.0.0.1:8005 :::* LISTEN 2966/java
tcp 0 0 :::8009 :::* LISTEN 2966/java
tcp 0 0 :::80 :::* LISTEN 2966/java
[root@webserver conf]# cd /data/tomcatweb/
[root@webserver tomcatweb]# vi time.jsp
<html><body><center>
Now time is: <%=new java.util.Date()%>
</center></body></html>
[root@webserver tomcatweb]# curl -xlocalhost:80 www.111.com/time.jsp
<html><body><center>
Now time is: Fri May 29 05:14:48 CST 2015
</center></body></html>
[root@webserver tomcatweb]# date
2015年 05月 29日 星期五 05:14:54 CS
