***主意不要在profile和~/.cshrc或~/.bash_profile中重复追加**
这里：
# vi /etc/profile
//java
//如果你安装的j2sdk的路径不一样,请自行修改
JAVA_HOME=/usr/java/jdk1.6.0_01
export JAVA_HOME
CLASSPATH=/usr/java/jdk1.6.0_01/lib:/usr/java/jdk1.6.0_01/jre/lib
export CLASSPATH
PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre/bin
export PATH
JRE=/usr/java/jdk1.6.0_01/jre
export JRE
d：立即生效
//如果你修改的是/etc/profile
# source /etc/profile
//如果你修改的是~/.cshrc
# source ~/.cshrc
//如果你修改的是~/.bash_profile
# source ~/.bash_profile
e：测试成功否
# java -version
Java(TM) SE Runtime Environment (build 1.6.0_01-b06)
Java HotSpot(TM) Client VM (build 1.6.0_01-b06, mixed mode, sharing)
看到这个消息，就ok啦
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tomcat6安装
tomcat6更详细的安装请看blog上tomcat文章
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a.安装tomcat，
# cd /home/xiutuo/software //进入软件包存放目录
# tar -zvxf apache-tomcat-6.0.13.tar.gz //解压
# mv apache-tomcat-6.0.13 /usr/local/tomcat6 //安装
# cd /usr/local/tomcat6/bin/ //进入安装目录
# tar -zvxf jsvc.tar.gz //解压
# cd jsvc-src //进入jsvc-src目录
# autoconf
# ./configure --with-java=/usr/java/jdk1.6.0_01
# configure时切记加java的jdk路径，否则无法使用普通用户开机自动启动tomcat
