Tomcat多个项目部署，通过Nginx反向代理分别配置二级域名的流程

1. 购买域名。示例：example.com

2. 设置多个二级域名。如图：

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3. 配置tomcat文件：

   1. 修改tomcat/conf目录下的server.xml文件：

      1. 如下配置配置了3个容器，使用三个不同的端口。
      2. 请注意三点：①端口号：Connector port；②容器名称：portservice name；③项目存放地址：Host appBase；
      3. 示例配置如下，可直接使用。

         <Service name="Catalina">
             <Connector port="8080" protocol="HTTP/1.1"
                        connectionTimeout="20000"
                        redirectPort="8443" />
             <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
             <Engine name="Catalina" defaultHost="localhost">
               <Realm className="org.apache.catalina.realm.LockOutRealm">
                 <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
                        resourceName="UserDatabase"/>
               </Realm>
               <Host name="localhost"  appBase="webapps"
                     unpackWARs="true" autoDeploy="true">
                 <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
                        prefix="localhost_access_log" suffix=".txt"
                        pattern="%h %l %u %t &quot;%r&quot; %s %b" />
               </Host>
             </Engine>
           </Service>
         
           <Service name="Catalina1">
             <Connector port="8081" protocol="HTTP/1.1"
                        connectionTimeout="20000"
                        redirectPort="8443" />
             <Connector port="8010" protocol="AJP/1.3" redirectPort="8443" />
             <Engine name="Catalina1" defaultHost="localhost">
               <Realm className="org.apache.catalina.realm.LockOutRealm">
                 <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
                        resourceName="UserDatabase"/>
               </Realm>
               <Host name="localhost"  appBase="webapps1"
                     unpackWARs="true" autoDeploy="true">
                 <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
                        prefix="localhost_access_log" suffix=".txt"
                        pattern="%h %l %u %t &quot;%r&quot; %s %b" />
               </Host>
             </Engine>
           </Service>
         
           <Service name="Catalina2">
             <Connector port="8082" protocol="HTTP/1.1"
                        connectionTimeout="20000"
                        redirectPort="8443" />
             <Connector port="8011" protocol="AJP/1.3" redirectPort="8443" />
             <Engine name="Catalina1" defaultHost="localhost">
               <Realm className="org.apache.catalina.realm.LockOutRealm">
                 <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
                        resourceName="UserDatabase"/>
               </Realm>
               <Host name="localhost"  appBase="webapps2"
                     unpackWARs="true" autoDeploy="true">
                 <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
                        prefix="localhost_access_log" suffix=".txt"
                        pattern="%h %l %u %t &quot;%r&quot; %s %b" />
               </Host>
             </Engine>
           </Service>

   2. 在tomcat根目录下，复制webapps文件夹，并在tomcat根目录下粘贴两份，分别命名为：webapps1和webapps2。注意此文件夹名称需要与第一步server.xml中添加的Host appBase名称一致。示例图如下：

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   3. 在tomcat/conf文件夹下，复制Catalina，并在tomcat/conf目录下粘贴两份（Catalina文件夹下的localhost文件夹不要更改名称，否则server.xml所添加的配置也需要改动。为不引起麻烦事，建议直接复制Catalina文件夹即可），分别命名为：Catalina1和Catalina2，注意此文件夹命名需要与第一步server.xml中添加的portservice name名称一致。示例图如下：

      • 

4. 配置Nginx反向代理：修改nginx/conf目录下的nginx.conf文件，添加反向代理配置与虚拟主机配置：

   #反向代理
       upstream www.example.com{
           server ;    #主机ip+端口号
       }
       upstream me.example.com{
           server ;
       }
       upstream dev.example.com{
           server ;
       }
   
   #配置虚拟主机
       server {
           listen ;
           server_name www.example.com;
           index index.jsp index.html index.htm; 
   
           #include proxy-pass-php.conf;
   
           location / {
                   proxy_pass http://www.example.com;    #与server_name保持一致
                   proxy_set_header Host $http_host;
                   proxy_set_header X-Real-IP $remote_addr;
                   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           }
           access_log  /home/wwwlogs/www.example.com.log;
       } 
   
       server {
           listen ;
           server_name me.example.com;
           index index.jsp index.html index.htm; 
   
           #include proxy-pass-php.conf;
   
           location / {
                   proxy_pass http://me.example.com;
                   proxy_set_header Host $http_host;
                   proxy_set_header X-Real-IP $remote_addr;
                   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           }
           access_log  /home/wwwlogs/me.example.com.log;
       } 
   
       server {
           listen ;
           server_name dev.example.com;
           index index.jsp index.html index.htm; 
   
           #include proxy-pass-php.conf;
   
           location / {
                   proxy_pass http://dev.example.com;
                   proxy_set_header Host $http_host;
                   proxy_set_header X-Real-IP $remote_addr;
                   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           }
           access_log  /home/wwwlogs/dev.example.com.log;
       }  
   
   include vhost/*.conf;

5. 完成配置后，在tomcat中分别于webapps、webapps1、webapps2文件夹下部署三个不同的项目，项目名称都命名为ROOT.war。启动tomcat，分别访问www.example.com、me.example.com、dev.example.com即可。