springboot2.x整合Redis 之 jedis-蒲公英云

springboot2.x整合Redis 之 jedis

注：SpringBoot2.x之后取消了对Jedis的支持，取而代之的是Lettuce。有关Lecture的学习请参考：https://hcshow.blog.csdn.net/article/details/105863342

第一步：创建项目，添加Maven依赖

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.10</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.10.1</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.10.1</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>2.10.1</version>
</dependency>
<!--        解决java8新日期API反序列化异常：com.fasterxml.jackson.databind.exc.InvalidDefinitionException-->
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
    <exclusions>
        <exclusion>
            <groupId>org.junit.vintage</groupId>
            <artifactId>junit-vintage-engine</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<!--redis默认使用的Lettuce客户端-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!--使用默认的Lettuce时，若配置spring.redis.lettuce.pool则必须配置该依赖-->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-pool2</artifactId>
</dependency>
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>3.2.0</version>
</dependency>

第二步：配置文件application.yml

spring:
    redis:
        database: 0
        host: 127.0.0.1
        port: 6379
#        password: 123456
        jedis:
            pool:
                max-active: 100
                max-idle: 3
                max-wait: -1
                min-idle: 0
        timeout: 1000

第三步：Redis配置文件

@Configuration
public class RedisConfig  { 
    @Bean
    public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory) { 
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(connectionFactory);
        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
        GenericJackson2JsonRedisSerializer serializer = new GenericJackson2JsonRedisSerializer();
        //使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(serializer);
        template.setHashValueSerializer(serializer);//设置值的序列化方式，默认是二进制
        template.afterPropertiesSet();
        return template;
    }
    @Bean
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory factory) { 
        StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();
        stringRedisTemplate.setConnectionFactory(factory);
        return stringRedisTemplate;
    }
}

第四步：测试代码

@SpringBootTest
public class HashDemoTest { 
    @Resource
    private RedisTemplate redisTemplate;
    @Test
    public void fun0(){ 
        redisTemplate.opsForHash().put("sss","k1","v1");
        //设置指定key过期时间
        redisTemplate.expire("sss",2,TimeUnit.MINUTES);
    }
    @Test
    public void fun1(){ 
        System.out.println(redisTemplate);
        Map<String, String> map = new HashMap<>();
        map.put("key1", "value1");
        map.put("key2", "value2");
        map.put("key3", "value3");
        map.put("key4", "value4");
        map.put("key5", "value5");
        redisTemplate.opsForHash().putAll("map1", map);
        redisTemplate.expire("map1",30, TimeUnit.HOURS);
    }
    @Test
    public void fun2(){ 
        String value = (String) redisTemplate.opsForHash().get("map1", "key1");
        System.out.println("value:" + value);
        Map<String, String> resultMap = redisTemplate.opsForHash().entries("map1");
        System.out.println("resultMap:" + resultMap);
        Set<String> keys = redisTemplate.opsForHash().keys("map1");
        System.out.println("keys:" + keys);
        List<String> values = redisTemplate.opsForHash().values("map1");
        System.out.println("values:" + values);
    }
    @Test
    public void fun3(){ 
        //删除Hash中指定的key
        Long delete = redisTemplate.opsForHash().delete("map1", "key1");
        System.out.println(delete);
        Map<String, String> resultMap = redisTemplate.opsForHash().entries("map1");
        System.out.println("resultMap:" + resultMap);
    }
}