linux上安装tomca和JDK
1安装JDK
1. 查看是否已经安装过JDK，登录linux运行命令：java –version
如果显示：
java version "1.6.0_25"
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
Java HotSpot(TM) Server VM (build 20.0-b11, mixed mode)
说明已经安装了系统自带的JDK。
2. 查看已安装JDK信息，运行命令：rpm -qa|grep java
显示：
java-1.4.2-gcj-compat-1.4.2.0-27jpp
gcc-java-3.4.6-3
3. 删除已安装JDK，运行命令：rpm –e --nodeps ******(代表已安装的jdk和jdk相关类库)
删除原JDK。
4. 安装JDK，上传jdk安装程序至服务器，在jdk所在目录运行命令：chmod +x jdk-6u23-linux-i586-rpm.bin (jdk文件名称)，更改执行权限。继续运行命令：./jdk-6u23-linux-i586-rpm.bin
显示：
Unpacking...
Checksumming...
Extracting...
UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (Zip-Bugs@lists.wku.edu).
inflating: jdk-6u23-linux-i586.rpm
inflating: sun-javadb-common-10.5.3-0.2.i386.rpm
inflating: sun-javadb-core-10.5.3-0.2.i386.rpm
inflating: sun-javadb-client-10.5.3-0.2.i386.rpm
inflating: sun-javadb-demo-10.5.3-0.2.i386.rpm
inflating: sun-javadb-docs-10.5.3-0.2.i386.rpm
inflating: sun-javadb-javadoc-10.5.3-0.2.i386.rpm
Preparing... ########################################### [100%]
1:jdk ########################################### [100%]
Unpacking JAR files...
rt.jar...
jsse.jar...
charsets.jar...
tools.jar...
localedata.jar...
plugin.jar...
javaws.jar...
deploy.jar...
Installing JavaDB
Preparing... ########################################### [100%]
1:sun-javadb-common ########################################### [ 17%]
2:sun-javadb-core ########################################### [ 33%]
3:sun-javadb-client ########################################### [ 50%]
4:sun-javadb-demo ########################################### [ 67%]
5:sun-javadb-docs ########################################### [ 83%]
6:sun-javadb-javadoc ########################################### [100%]
Java(TM) SE Development Kit 6 successfully installed.
Product Registration is FREE and includes many benefits:
* Notification of new versions, patches, and updates
* Special offers on Oracle products, services and training
* Access to early releases and documentation
Product and system data will be collected. If your configuration
supports a browser, the JDK Product Registration form will
be presented. If you do not register, none of this information
will be saved. You may also register your JDK later by
opening the register.html file (located in the JDK installation
directory) in a browser.
For more information on what data Registration collects and
how it is managed and used, see:
http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html
Press Enter to continue.....
说明JDK已经安装成功。
5. 修改JDK运行目录，运行命令：vi /etc/profile
添加如下内容：
export JAVA_HOME=/root/jdk1.6.0_18(JDK所在目录)
export CLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
export JRE_HOME=$JAVA_HOME/jre
6. 验证JDK，运行命令：java –version
显示：
java version "1.6.0_25"
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
Java HotSpot(TM) Server VM (build 20.0-b11, mixed mode)
说明JDK已经安装成功。
2安装Tomcat
1. 上传tomcat至服务器，运行命令：chmod +x apache-tomcat-6.0.29.tar.gz
2. 解压tomcat，运行命令：tar –zxvf apache-tomcat-6.0.29.tar.gz
3. 运行tomcat，运行命令：cd apache-tomcat-6.0.29/bin | ./startup.sh
4. 打开浏览器输入服务器tomcat地址验证tomcat是否启动成功。