CentOS下安装JDK和Tomcat

1.查看CentOS自带的JDK是否安装，如果已经安装卸载

#rpm –qa | grep jdk

#rpm –qa | grep gcj

#yum –y remove java-*-gcj-comat

2.安装JDK

下载jdk-6u18-linux-i586.bin或者jdk-6u18-linux-i586-rpm.bin，本次安装使用jdk-6u18-linux-i586.bin

#mkdir /usr/local/java

#cd .usr/local/java

#chmod +x jdk-6u18-linux-i586.bin

#./jdk-6u18-linux-i586.bin

选择YES

3.配置环境变量

#vi /etc/profile

在最后加入以下几行

export JAVA_HOME=/usr/local/java/jdk1.6.0_18
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

4.#reboot

5.检查

[root@nagios conf]# echo $JAVA_HOME
/usr/local/java/jdk1.6.0_18

[root@nagios conf]# echo $PATH
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/java/jdk1.6.0_18/bin:/root/bin

[root@nagios conf]# echo $CLASSPATH
.:/usr/local/java/jdk1.6.0_18/jre/lib/rt.jar:/usr/local/java/jdk1.6.0_18/lib/dt.jar:/usr/local/java/jdk1.6.0_18/lib/tools.jar

[root@nagios conf]# java -version
java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing)

6.下载tomcat

#tar –zxvf  apache-tomcat-6.0.18.tar.gz

#mv apache-tomcat-6.0.18 /usr/local/tomcat

启动tomcat

[root@nagios conf]# /usr/local/tomcat/bin/startup.sh
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/jdk1.6.0_18

默认访问http://localhost:8080,出现默认页面，说明安装成功

注册自己的项目，放到/usr/local/tomcat/webapps

把短信机发送程序sms.war放在 /usr/local/tomcat/webapps

修改默认端口可以在/usr/localtomcat/conf/server.xml中

关闭tomcat

[root@nagios conf]# /usr/local/tomcat/bin/shutdown.sh
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/jdk1.6.0_18

#vi /etc/rc.d/rc.local

JAVA_HOME=/usr/local/java/jdk1.6.0_18

export JAVA_HOME

/usr/local/tomcat/bin/shutdown.sh  开机启动