Spring Boot笔记之Redis

一时失言乱红尘 2022-04-16 07:05 197阅读 0赞

**摘要**：Spring Boot整合redis，jedis。使用Redis服务实现SpringSession。

## pom添加 ##

pom.xml：

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
            </dependency>
    		<dependency>
                <groupId>org.springframework.session</groupId>
                <artifactId>spring-session-data-redis</artifactId>
            </dependency>
    		<dependency>
                <groupId>redis.clients</groupId>
                <artifactId>jedis</artifactId>
                <version>2.9.0</version>
            </dependency>

## application配置 ##

application.properties

spring.redis.database=1
    spring.redis.host=localhost
    spring.redis.port=6379
    spring.redis.password=123456
    spring.redis.timeout=10000
    spring.redis.jedis.pool.max-active=8
    spring.redis.jedis.pool.max-idle=8
    spring.redis.jedis.pool.max-wait=-1
    spring.redis.jedis.pool.min-idle=0
    spring.session.store-type=redis
    server.servlet.session.cookie.domain=localhost
    server.servlet.session.cookie.path=/
    server.servlet.session.cookie.name=JSessionID

至此项目的Spring session配置完毕，web端访问时使用`localhost`的Cookie，生产环境因该配置server.servlet.session.cookie.domain\`为域名，仅使用域名访问时才有session。

## JedisPool Bean配置 ##

如果程序中需要使用redis存储、读取一些自定义的键值需要配置`JedisPool`Bean：

import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
    import redis.clients.jedis.JedisPool;
    import redis.clients.jedis.JedisPoolConfig;
    
    @Configuration
    @EnableRedisHttpSession
    public class RedisConfiguration { 
        @Autowired
        private RedisProperties properties;
    
        /** * 注入jedisPool * 用于手动调用jedisPool.getResource().set()/get() * * @return */
        @Bean
        public JedisPool getJedisPool() { 
            JedisPoolConfig config = new JedisPoolConfig();
            config.setMaxIdle(properties.getJedis().getPool().getMaxIdle());
            config.setMaxTotal(properties.getJedis().getPool().getMaxActive());
            config.setMaxWaitMillis(properties.getJedis().getPool().getMaxWait().toMillis());
            JedisPool pool = new JedisPool(config, properties.getHost(), properties.getPort(), 100, properties.getPassword(), properties.getDatabase());
            return pool;
        }
    }

JedisPool的使用

import com.my.demo.Application;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    import redis.clients.jedis.JedisPool;
    
    @RunWith(SpringRunner.class)
    @SpringBootTest(classes = { Application.class})
    public class JedisPoolTest { 
        @Autowired
        private JedisPool jedisPool;
    
        @Test
        public void testSet() { 
            String result = jedisPool.getResource().set("hello", "Hello World :-)");
            System.out.println(result);// OK
        }
    
        @Test
        public void testGet() { 
            String result = jedisPool.getResource().get("hello");
            System.out.println(result);// Hello World :-)
        }
    }