Tomcat7 Redis Session 共享

关于负载均衡，导致需要实现Session共享。大概有两个解决办法：

Nginx里面是有 ip_hash。但是同一局域网发出的请求，通常会是相同的IP地址。
实现不同实例之间Session共享

Tomcat Session 共享

https://github.com/jcoleman/tomcat-redis-session-manager

配置

Tomcat配置 context.xml

<Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
<Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager"
         host="localhost" <!-- optional: defaults to "localhost" -->
         port="6379" <!-- optional: defaults to "6379" -->
         database="0" <!-- optional: defaults to "0" -->
         maxInactiveInterval="60" <!-- optional: defaults to "60" (in seconds) -->
         sessionPersistPolicies="PERSIST_POLICY_1,PERSIST_POLICY_2,.." <!-- optional -->
         sentinelMaster="SentinelMasterName" <!-- optional -->
         sentinels="sentinel-host-1:port,sentinel-host-2:port,.." <!-- optional --> />

将以下jar包，放到 Tomcat 下面的 lib文件夹

tomcat-redis-session-manager-VERSION.jar
jedis-2.5.2.jar
commons-pool2-2.2.jar

构建 tomcat-redis-session-manager

另外两个包比较容易找到。下面自己构建（之前网上找到都会报错）

克隆仓库

git clone git@github.com:jcoleman/tomcat-redis-session-manager.git

修改配置文件

# vim ~/tomcat-redis-session-manager/build.gradle
# 增加 49， 注释57-59
 47 signing {
 48   sign configurations.archives
 49   required = false
 50 }
 51
 52 uploadArchives {
 53   repositories {
 54     mavenDeployer {
 55       beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
 56
 57       //repository(url: "https://oss.sonatype.org/service/local/staging/deploy/maven2/") {
 58       //  authentication(userName: sonatypeUsername, password: sonatypePassword)
 59       //}
 60       //repository(url: "https://oss.sonatype.org/content/repositories/snapshots") {
 61       //  authentication(userName: sonatypeUsername, password: sonatypePassword)
 62       //}

构建

gradle build --stacktrace

得到jar包

build
├── libs
│   ├── tomcat-redis-session-manager-2.0.0-javadoc.jar
│   ├── tomcat-redis-session-manager-2.0.0-sources.jar
│   └── tomcat-redis-session-manager-2.0.0.jar