Linux系统Nginx+Tomcat+Redis实现Session共享

用户：root

Nginx版本：nginx-1.10.0

Tomcat版本：apache-tomcat-7.0.52

Redis版本：redis-3.0.7

下载安装

• 下载tomcat使用redis做为session存储的插件
• 官网地址：https://github.com/jcoleman/tomcat-redis-session-manager，下载tomcat-redis-session-manager-master.zip，上传至Linux系统，并解压

• [root@localhost session]# pwd
  /home/listen/session
  [root@localhost session]# ll
  total 44
  drwxrwxr-x. 9 listen listen  4096 May 10 01:23 tomcat-redis-session-manager-master
  -rw-rw-r--. 1 listen listen 40891 May 10 00:42 tomcat-redis-session-manager-master.zip
  [root@localhost session]#

   

• 编辑编译的构建文件build.gradle

• [root@localhost tomcat-redis-session-manager-master]# pwd
  /home/listen/session/tomcat-redis-session-manager-master
  [root@localhost tomcat-redis-session-manager-master]# ll
  total 36
  drwxr-xr-x. 7 listen listen    75 May 10 01:23 build
  -rw-rw-r--. 1 listen listen  2852 May 10 00:44 build.gradle
  -rw-rw-r--. 1 listen listen  2726 May 10 00:43 build.gradle.bak
  drwxr-xr-x. 2 listen listen  4096 May 10 03:26 dist
  drwxrwxr-x. 3 listen listen    57 Apr  8  2015 example-app
  -rw-rw-r--. 1 listen listen    70 Apr  8  2015 Gemfile
  -rw-rw-r--. 1 listen listen   592 Apr  8  2015 Gemfile.lock
  -rw-rw-r--. 1 listen listen  1061 Apr  8  2015 license.txt
  -rw-rw-r--. 1 listen listen 11057 Apr  8  2015 README.markdown
  drwxrwxr-x. 4 listen listen    56 Apr  8  2015 spec
  drwxrwxr-x. 3 listen listen    17 Apr  8  2015 src
  drwxrwxr-x. 3 listen listen    33 Apr  8  2015 vagrant
  [root@localhost tomcat-redis-session-manager-master]# vi build.gradle

   内容为：

• apply plugin: 'java'
  apply plugin: 'maven'
  apply plugin: 'signing'
    
  group = 'com.orangefunction'
  version = '2.0.0'
    
  repositories {
    mavenCentral()
  }
    
  compileJava {
    sourceCompatibility = 1.7
    targetCompatibility = 1.7
  }
    
  dependencies {
    compile group: 'org.apache.tomcat', name: 'tomcat-catalina', version: '7.0.61'
    compile group: 'redis.clients', name: 'jedis', version: '2.7.3'
    compile group: 'org.apache.commons', name: 'commons-pool2', version: '2.2'
    //compile group: 'commons-codec', name: 'commons-codec', version: '1.9'
    
    testCompile group: 'junit', name: 'junit', version: '4.+'
    testCompile 'org.hamcrest:hamcrest-core:1.3'
    testCompile 'org.hamcrest:hamcrest-library:1.3'
    testCompile 'org.mockito:mockito-all:1.9.5'
    testCompile group: 'org.apache.tomcat', name: 'tomcat-coyote', version: '7.0.61'
  }
    
  task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from 'build/docs/javadoc'
  }
    
  task sourcesJar(type: Jar) {
    from sourceSets.main.allSource
    classifier = 'sources'
  }
    
  artifacts {
    archives jar
    
    archives javadocJar
    archives sourcesJar
  }
    
  //signing {
  //  sign configurations.archives
  //}
    
  task copyJars(type: Copy) {
    from configurations.runtime
    into 'dist'  
  }
    
  uploadArchives {
    repositories {
      mavenDeployer {
        beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
    
        //repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
        //  authentication(userName: sonatypeUsername, password: sonatypePassword)
        // }
        //repository(url: "https://oss.sonatype.org/content/repositories/snapshots") {
        //  authentication(userName: sonatypeUsername, password: sonatypePassword)
        //}
    
        pom.project {
          name 'tomcat-redis-session-manager'
          packaging 'jar'
          description 'Tomcat Redis Session Manager is a Tomcat extension to store sessions in Redis'
          url 'https://github.com/jcoleman/tomcat-redis-session-manager'
    
          issueManagement {
            url 'https://github.com:jcoleman/tomcat-redis-session-manager/issues'
            system 'GitHub Issues'
          }
    
          scm {
            url 'https://github.com:jcoleman/tomcat-redis-session-manager'
            connection 'scm:git:git://github.com/jcoleman/tomcat-redis-session-manager.git'
            developerConnection 'scm:git:git@github.com:jcoleman/tomcat-redis-session-manager.git'
          }
    
          licenses {
            license {
              name 'MIT'
              url 'http://opensource.org/licenses/MIT'
              distribution 'repo'
            }
          }
    
          developers {
            developer {
              id 'jcoleman'
              name 'James Coleman'
              email 'jtc331@gmail.com'
              url 'https://github.com/jcoleman'
            }
          }
        }
      }
    }
  }

   

• 编译构建项目

• [root@localhost tomcat-redis-session-manager-master]# gradle build -x test copyJars

   若是发现gradle命令不能识别，请先安装gradle工具，请参考Linux系统Nginx安装配置

• 生成的jar包

• 拷贝替换jar包

• 拷贝dist目录下面全部的jar包及build/libs目录下的tomcat-redis-session-manager-master-2.0.0.jar包至{tomcat_home} /lib目录下（两台tomcat）

• [root@localhost libs]# cp /home/listen/session/tomcat-redis-session-manager-master/dist/*.jar /home/listen/session/tomcat-redis-session-manager-master/build/libs/tomcat-redis-session-manager-master-2.0.0.jar /home/listen/tomcat/apache-tomcat-7.0.52/lib
  [root@localhost libs]# cp /home/listen/session/tomcat-redis-session-manager-master/dist/*.jar /home/listen/session/tomcat-redis-session-manager-master/build/libs/tomcat-redis-session-manager-master-2.0.0.jar /home/listen/tomcat/apache-tomcat-7.0.52-02/lib

   

• 修改2个tomcat的context.xml配置文件

• [root@localhost tomcat]# pwd 
  /home/listen/tomcat
  [root@localhost tomcat]# vi apache-tomcat-7.0.52/conf/context.xml

   内容为：

• <?xml version='1.0' encoding='utf-8'?>
  <!--
    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
    The ASF licenses this file to You under the Apache License, Version 2.0
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at
  
        http://www.apache.org/licenses/LICENSE-2.0
  
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
  -->
  <!-- The contents of this file will be loaded for each web application -->
  <Context>
  
      <!-- Default set of monitored resources -->
      <WatchedResource>WEB-INF/web.xml</WatchedResource>
  
      <!-- Uncomment this to disable session persistence across Tomcat restarts -->
      <!--
      <Manager pathname="" />
      -->
  
      <!-- Uncomment this to enable Comet connection tacking (provides events
           on session expiration as well as webapp lifecycle) -->
      <!--
      <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
      -->
  
  <!--如下为增长的内容-->
  <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />  
  <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"  
           host="192.168.75.141"  
           port="6379"  
           database="0"  
           maxInactiveInterval="60" />  
  
  </Context>

  能够看出链接的redis为192.168.75.141:6379

• 测试使用Redis实现Tomcat多机的session共享

• 新建test工程，为web模式，修改index.jsp的内容为：

• <%@ page language="java" contentType="text/html; charset=UTF-8"
      pageEncoding="UTF-8"%>
  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  <html>
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Nginx+tomcat负载均衡+redis会话管理</title>
  </head>
  <body>
  <h1><font color="blue">集群节点1</font></h1>
      <table align="centre" border="1">
        <tr>
          <td>Session ID</td>
          <td><%= session.getId() %></td>
        </tr>
        <tr>
          <td>Created on</td>
          <td><%= session.getCreationTime() %></td>
       </tr>
      </table>
   <p>
  </body>
  </html>

  第二台tomcat部署的test工程的index.jsp的内容修改成：

• <%@ page language="java" contentType="text/html; charset=UTF-8"
      pageEncoding="UTF-8"%>
  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  <html>
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>Nginx+tomcat负载均衡+redis会话管理</title>
  </head>
  <body>
  <h1><font color="blue">集群节点2</font></h1>
      <table align="centre" border="1">
        <tr>
          <td>Session ID</td>
          <td><%= session.getId() %></td>
        </tr>
        <tr>
          <td>Created on</td>
          <td><%= session.getCreationTime() %></td>
       </tr>
      </table>
   <p>
  </body>
  </html>

   

• 部署测试session
• 将两个test工程分别部署至两个tomcat实例，而后重启2个tomcat，启动Nginx，（Nginx配置可参考Linux系统Nginx安装配置）而后刷新而后刷新http://192.168.75.141/test/地址 
• 多刷新几回，便可看到两台tomcat的test工程在不一样的切换，可是session id不变，即实现多机Tomcat使用Redis实现session共享。 

over！