spring-boot-starter-data-redis 操作 Redis

zhuangjinxin commented 4 years ago

今日收获：

知道了 spring boot redis 默认使用的连接池是：lettuce；还可以自己切换到 Jedis；
第一次看到RedisAutoConfigration类的源码，知道了Redis自动配置做了哪些事情；
知道了针对key的操作在RedisTemplate中(如：过期时间)，针对value的操作需要先找到opsForXxx；
RedisTemplate 的默认序列化是JdkSerializationRedisSerializer；StringRedisTemplate默认的序列化方案是：StringRedisSerializer；也可以自行修改：redisTemplate.setKeySerializer(new StringRedisSerializer());

zhuangjinxin commented 4 years ago

添加依赖：

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-pool2</artifactId>
    </dependency>
</dependencies>

添加配置：

spring.redis.database=0
spring.redis.password=123
spring.redis.port=6379
spring.redis.host=192.168.66.128
spring.redis.lettuce.pool.min-idle=5
spring.redis.lettuce.pool.max-idle=10
spring.redis.lettuce.pool.max-active=8
spring.redis.lettuce.pool.max-wait=1ms
spring.redis.lettuce.shutdown-timeout=100ms

自动配置：

@Configuration
@ConditionalOnClass(RedisOperations.class)
@EnableConfigurationProperties(RedisProperties.class)
@Import({ LettuceConnectionConfiguration.class, JedisConnectionConfiguration.class })
public class RedisAutoConfiguration {
        @Bean
        @ConditionalOnMissingBean(name = "redisTemplate")
        public RedisTemplate<Object, Object> redisTemplate(
                        RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
                RedisTemplate<Object, Object> template = new RedisTemplate<>();
                template.setConnectionFactory(redisConnectionFactory);
                return template;
        }
        @Bean
        @ConditionalOnMissingBean
        public StringRedisTemplate stringRedisTemplate(
                        RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
                StringRedisTemplate template = new StringRedisTemplate();
                template.setConnectionFactory(redisConnectionFactory);
                return template;
        }
}

使用方法：

@Service
public class HelloService {
    @Autowired
    RedisTemplate redisTemplate;
    public void hello() {
        ValueOperations ops = redisTemplate.opsForValue();
        ops.set("k1", "v1");
        Object k1 = ops.get("k1");
        System.out.println(k1);
    }
}

zhuangjinxin commented 4 years ago

参考文章： Spring Boot 操作 Redis，三种方案全解析！ Spring Boot 2.X(六)：Spring Boot 集成 Redis

zhuangjinxin / study

spring-boot-starter-data-redis 操作 Redis #1