在64位Ubuntu下搭建Java web +mysql_MySQL
Ubuntu
今天搭建了一个ubuntu 64位的tomcat + java + mysql的环境，现在总结一下：
1.下载jdk
地址:
http://download.oracle.com/otn-pub/java/jdk/7u51-b13/jdk-7u51-linux-x64.tar.gz?AuthParam=1394967394_1531ce17d13be0962e25ec8fe3e45f1d
安装:
tar xvf 解压刚下载的jdk压缩包。
然后到/etc/profile（注释：使用vi命令）文件中，配置环境变量（注释:假设jdk解压后目录为/softsetupdir/jdk1.7.0_51)
将下面三行内容放到profile文件的尾部，并保存
export JAVA_HOME=/softsetupdir/jdk1.7.0_51
export PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre/bin
export CLASSPATH=$JAVA_HONE/lib;$JAVA_HONE/jre/lib:.
要这些配置马上生效，需要执行:
source /etc/profile
测试：
此时，你在命令行中输入java,javac命令应该就可以了，也说明你的jdk已经配置好了
2.下载tomcat
地址:
http://mirrors.cnnic.cn/apache/tomcat/tomcat-8/v8.0.3/bin/apache-tomcat-8.0.3.tar.gz
安装:
放心，tomcat下载下来后，解压缩就可以了，然后在解压的bin目录中执行脚本startup.sh就启动tomcat服务了
测试:
http://ip地址:8080
看浏览器能否出现tomcat的docs文档，如果能，则说明tomcat好了。
3.按照mysql
sudo apt-get install mysql-server
安装完毕后，mysql环境变量自己也即配置完了。
测试:
输入:
mysql -p
输入密码
如果能连接上mysql，则说明mysql好了
扩展：mysql服务的启动与停止
service mysql stop
service mysql start
service mysql restart
4.配置域名
在域名中心将域名帮定到该机器的Ip地址
例子：只需要修改xxx.xxx.xxx.xxx为自己的ip地址就行了，随便给我自己的域名打个广告
主机名 (A)(最多允许20条) IP 地址 TTL 操作 帮助
www.uhdesk.com
xxx.xxx.xxx.xxx 3600 修改 - 删除
5.此时发现需要输入域名的同时，还要加上端口才能访问该机tomcat的webapps/root下的index.htm
为了解决这个问题，需要将tomcat提供Http的服务端口改为80.
原因：浏览器发出http请求的时候，默认端口是80.
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