分布式day09_05-分布式Session解决方案

最新推荐文章于 2025-05-05 08:42:33 发布

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本文介绍如何通过配置Spring Session和Redis解决分布式环境下Session共享问题。详细步骤包括修改pom文件引入依赖，创建SessionConfig类配置Redis连接，以及创建SessionInitializer进行初始化。

修改pom文件

<dependencies>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<!-- <exclusions> <exclusion> <groupId>com.fasterxml.jackson.core</groupId> 
				<artifactId>jackson-databind</artifactId> </exclusion> </exclusions> -->
		</dependency>
		<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.47</version>
		</dependency>
		<!-- Testing Dependencies -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-redis</artifactId>
		</dependency>
		<!--spring session 与redis应用基本环境配置,需要开启redis后才可以使用，不然启动Spring boot会报错 -->
		<dependency>
			<groupId>org.springframework.session</groupId>
			<artifactId>spring-session-data-redis</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-pool2</artifactId>
		</dependency>
		<dependency>
			<groupId>redis.clients</groupId>
			<artifactId>jedis</artifactId>
		</dependency>

	</dependencies>

创建SessionConfig类

package com.itmayiedu.session;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

//这个类用配置redis服务器的连接
//maxInactiveIntervalInSeconds为SpringSession的过期时间（单位：秒）
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 1800)
public class SessionConfig {

	// 冒号后的值为没有配置文件时，制动装载的默认值
	@Value("${redis.hostname:localhost}")
	String HostName;
	@Value("${redis.port:6379}")
	int Port;
	@Value("${redis.password}")
	String password;

	@Bean
	public JedisConnectionFactory connectionFactory() {
		JedisConnectionFactory connection = new JedisConnectionFactory();
		connection.setPort(Port);
		connection.setHostName(HostName);
		connection.setPassword(password);
		return connection;
	}
}

创建SessionInitializer

package com.itmayiedu.session;

import org.springframework.session.web.context.AbstractHttpSessionApplicationInitializer;

//初始化Session配置
public class SessionInitializer extends AbstractHttpSessionApplicationInitializer {
	public SessionInitializer() {
		super(SessionConfig.class);
	}
}

重启项目就可以，启动8081和8082