上一篇文章我们已经谈过centos下的php环境lamp的安装，现在我们就来大家jsp的允许环境Nginx+jdk+mysql+tomcat，在centos上有了yum，安装都变得异常的easy。
一、首先使用yum命令安装或者升级所需的程序库
copy以下命令到命令行回车即可。
yum -y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel e2fsprogs e2fsprogs-devel krb5-server krb5-devel libidn libidn-devel openldap openldap-devel nss_ldap openldap-clients openldap-servers
二、安装mysql
三、安装Nginx
根据centos版本安装版本可能有所不同，详情请看http://nginx.org/en/download.html
1、Nginx最新版yum源在EPEL RPM包中，wget下载安装即可
cd /root
[root@AY12122501352213a7156 /]# wget http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm[root@AY12122501352213a7156 /]# rpm -ivh epel-release-5-4.noarch.rpm
2、安装nginx
[root@AY12122501352213a7156 /]# yum install nginx
中途一直输入y即可完成。
3、启动测试nginx
[root@AY12122501352213a7156 /]# service nginx restart
Stopping nginx: [FAILED]
Starting nginx: [emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: still could not bind()
[root@AY12122501352213a7156 /]# ps -ef | grep httpd
apache 25797 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
apache 25798 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
apache 25799 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
apache 25800 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
apache 25801 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
apache 25802 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
apache 25803 1 0 Jan11 ? 00:00:00 /usr/sbin/httpd
root 31068 30852 0 09:57 pts/0 00:00:00 grep httpd
[root@AY12122501352213a7156 /]# killall httpd
Stopping nginx: [FAILED]
Starting nginx: [ OK ]
80端口被占用，我这里是apache服务占用的，将其结束即可。Nginx启动后有两个进程，master为主进程，worker为工作进程.
在启动完NGINX后，我们可以在浏览器中输入http://serverip查看welcome to nginx即算成功。
四、安装jdk
1、首先下载jdk
到官网找到你要下载的jdk地址，然后使用wget下载到本地。
[root@AY12122501352213a7156 /]# wget --no-cookie --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F" http://download.oracle.com/otn-pub/java/jdk/7u10-b18/jdk-7u10-linux-i586.rpm
wget下载Jdk有个小问题，就是wget支持重定向，直接：wget http://download.oracle.com/otn-pub/java/jdk/7u10-b18/jdk-7u10-linux-i586.rpm 这样会出问题
2、安装jdk
[root@AY12122501352213a7156 softdir]# rpm -ivh jdk-7u10-linux-i586.rpm
3、配置环境变量
编辑profile文件 设置开机文件java开机执行环境文件
[root@AY12122501352213a7156]#vi /etc/profile
在文件的末尾增加如下内容
#JDK START==================
JAVA_HOME="/usr/java/jdk1.7.0_10" #jdk安装路径，可以使用where is java查看
CLASS_PATH="$JAVA_HOME/lib:$JAVA_HOME/jre/lib"
PATH=".:$PATH:%JAVA_HOME/bin"
CATALINA_HOME="/usr/local/tomcat"
export JAVA_HOME CATALINA_HOME
#JDK END============
保存并退出vi，执行以下命令使配置生效。
#source /etc/profile
4、测试jdk
[root@AY12122501352213a7156]# java -version
java version "1.7.0_10"
Java(TM) SE Runtime Environment (build 1.7.0_10-b18)
Java HotSpot(TM) Client VM (build 23.6-b04, mixed mode, sharing)
五、安装tomcat
#mkdir /www //建立网页根目录
#cp /usr/share/nginx/html/* /www/
#wget http://apache.etoak.com/tomcat/tomcat-7/v7.0.5-beta/bin/apache-tomcat-7.0.5.tar.gz#tar -zxvf apache-tomcat-7.0.5.tar.gz
#mv apache-tomcat-7.0.5 /usr/local/tomcat
#cp –rf /usr/local/tomcat/webapps/* /www/
2、配置tomcat的server.xml文件，并启动或停止tomcat
#vi /usr/local/tomcat/conf/server.xml
查找appBase=”webapps”,修改为appBase=”/www”,其中/www 即为网页的根目录。
安装完成后，启动tomcat，默认监听端口为8080
#/usr/local/tomcat/bin/startup.sh
停止tomcat可以使用以下命令：
#/usr/local/tomcat/bin/shutdown.sh
3、测试
在流量其中输入http://serverip:8080/ 显示tomcat的主界面说明成功。
六、nginx与tomcat整合
1、Nginx与tomcat的整合其实就是只要配置好nginx.conf文件就可以了。最好先备份一个。
#vi /etc/nginx/nginx.conf //配置好的nginx.conf文件如下（注意红色部分)
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;
events {
use epoll;
worker_connections 65535;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32K;
client_max_body_size 8m;
sendfile on;
tcp_nopush on;
keepalive_timeout 65;
#tomcat add start<<
tcp_nodelay on;
client_body_buffer_size 512k;
proxy_connect_timeout 5;
proxy_read_timeout 60;
proxy_send_timeout 5;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
#tomcat add end>>
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;
#tomcat add start<<
upstream tomcat_server {
server 127.0.0.1:8080;
}
#tomcat add end>>
server {
listen 80;
server_name _;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root /www;
index index.html index.htm index.jsp default.jsp index.do default.do;
}
#tomcat add start<<
if (-d $request_filename)
{
rewrite ^/(.*)([^/])$http://$host/$1$2/ permanent;
}
location ~ \.(jsp|jspx|do)?$ {
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_pass http://tomcat_server;
}
#tomcat add end>>
error_page 404 /404.html;
location = /404.html {
root /www;
}
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /www;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#ocation ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /www$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
# Load config files from the /etc/nginx/conf.d directory
include /etc/nginx/conf.d/*.conf;
}2、测试
#service nginx restart
Nginx启动后，可以访问以下URL中的jsp实例程序，检查jsp程序能否运行。
http://serverip/examples/jsp/注意：nginx与tomcat的工作原理是由nginx代理tomcat输出网页，因此如果开启了防火墙，防火墙不用打开8080端口，也一样可以访问jsp页面。
至此，jsp环境搭建大功告成。
