CentOS下配置安装Tomcat并配置JDK环境
第一步、下载JDK、Tomcat
下载JDK
https://edelivery.oracle.com/otn-pub/java/jdk/7u45-b18/jdk-7u45-linux-x64.rpm
或者：#wget https://edelivery.oracle.com/otn-pub/java/jdk/7u45-b18/jdk-7u45-linux-x64.rpm
版本：jdk-7u45-linux-x64.rpm
安装JDK
[root@thinkpig007 ss]# rpm �Civhjdk-7u45-linux-x64.rpm
下载tomcat7
http://apache.fayea.com/apache-mirror/tomcat/tomcat-7/v7.0.47/bin/apache-tomcat-7.0.47.tar.gz
或者：
#wget http://apache.fayea.com/apache-mirror/tomcat/tomcat-7/v7.0.47/bin/apache-tomcat-7.0.47.tar.gz
版本：apache-tomcat-7.0.47.tar.gz
第二步、卸载系统老的tomcat
卸载使用yum自动安装的tomcat6
#yum remove tomcat6
查看本机的jdk本版
#java �Cversion
[root@thinkpig007 ss]# java-version
java version"1.6.0_24"
OpenJDK Runtime Environment(IcedTea6 1.11.13) (rhel-1.65.1.11.13.el6_4-x86_64)
OpenJDK 64-Bit Server VM(build 20.0-b12, mixed mode)
[root@thinkpig007 ss]#
查看本机已经安装的JDK版本
[root@thinkpig007 ss]# cd/usr/java/
default/ jdk1.7.0_45/ latest/
注意：这里的jdk目录就是我们修改/etc/profile环境变量是所要填写路径及目录名称，如下
exportJAVA_HOME=/usr/java/jdk1.7.0_45
（详解：“第三步、安装tomcat7”中的“(4) 添加tomcat环境变量”）
[root@thinkpig007 ss]# cd/usr/java/
[root@thinkpig007jdk1.7.0_45]# cat release
JAVA_VERSION="1.7.0"
OS_NAME="Linux"
OS_VERSION="2.6"
OS_ARCH="amd64"
SOURCE=" .:f0cdb08a4624corba:80f65a8f5850 deploy:2b1995e2c8f5 hotspot:12374864c655hotspot/make/closed:2c0b7ecdd92d hotspot/src/closed:b8a50da977b6hotspot/test/closed:47eee40b7622 install:99193876e329 jaxp:4beb90ab48f7jaxws:65b0f3ccdc8b jdk:c5ca4daec23b jdk/make/closed:917a8e455dc3jdk/src/closed:b6127fd9ff72 jdk/test/closed:e3c74041acc5 langtools:ba3ff27d4082pubs:476da1da84f7 sponsors:c732b1a6f43b"
BUILD_TYPE=commercial
第三步、安装tomcat7
安装tomcat
(1)解压apache-tomcat-7.0.47.tar.gz
[root@thinkpig007 ss]# tar-zxvf apache-tomcat-7.0.47.tar.gz
(2)复制解压后的目录apache-tomcat-7.0.47到/usr/local下并重命名为tomcat7
[root@thinkpig007 ss]# cp -Rapache-tomcat-7.0.47 /usr/local/tomcat7
注意：/usr/local/tomcat7就是后面我们要修改环境变量时需要填写的目录路径
(3)进入bin目录
[root@thinkpig007 ss]# cd/usr/local/tomcat7/
[root@thinkpig007 tomcat7]# cdbin/
[root@thinkpig007 bin]#
没修改环境变量前，启动tomcat出错
[root@thinkpig007 bin]#./startup.sh
Cannot find ”/usr/local/tomcat”/bin/setclasspath.sh
(4)添加tomcat环境变量
# [root@thinkpig007 ~]# vi/etc/profile
加入下代码
#set environment variable
exportJAVA_HOME=/usr/java/jdk1.7.0_45
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
exportTOMCAT_HOME=/usr/local/tomcat7
exportCATALINA_HOME=/usr/local/tomcat7
exportPATH=$PATH:$JAVA_HOME/bin
(5)修改应用环境变量，是配置生效
[root@thinkpig007 bin]# source/etc/profile
(6)修改环境变量后重新启动tomcat启动成功
This file is needed to runthis program
[root@thinkpig007 bin]# ./startup.sh
Using CATALINA_BASE: /usr/local/tomcat7
Using CATALINA_HOME: /usr/local/tomcat7
Using CATALINA_TMPDIR:/usr/local/tomcat7/temp
Using JRE_HOME: /usr/java/jdk1.7.0_45
Using CLASSPATH: /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar
(7)关闭tomcat
[root@thinkpig007 bin]#./shutdown.sh
Using CATALINA_BASE: /usr/local/tomcat7
Using CATALINA_HOME: /usr/local/tomcat7
Using CATALINA_TMPDIR:/usr/local/tomcat7/temp
Using JRE_HOME: /usr/java/jdk1.7.0_45
Using CLASSPATH: /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar
[root@thinkpig007 bin]#
第四步、添加管理权限
默认情况下，Tomcat并没提供具有管理权限的账号，所以需要添加具有这种权限的账号。角色manager-gui具有这种权限，但在系统用户控制文件tomcat-users.xml中并没有设置这两种角色和对应的用户，所以需要添加这种角色和用户，方法是打开tomcat-users.xml文件，添加如下内容：
<rolerolename="manager-gui"/>
<userusername="manager" password="manager"roles="manager-gui"/>
然后重启 Tomcat 服务器，文件修改生效。本文出自 “飞翔的猪” 博客，请务必保留此出处http://thinkpig007.blog.51cto.com/971471/1332782