Java的spring boot链接redis的代码

下面是Java的Spring Boot链接Redis的代码示例：

1. 首先，在pom.xml文件中添加依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

2. 在application.properties文件中添加Redis配置：

spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=
spring.redis.database=0

3. 创建Redis配置类：

@Configuration
public class RedisConfig {

    @Value("${spring.redis.host}")
    private String host;

    @Value("${spring.redis.port}")
    private int port;

    @Value("${spring.redis.password}")
    private String password;

    @Value("${spring.redis.database}")
    private int database;

    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory();
        lettuceConnectionFactory.setHostName(host);
        lettuceConnectionFactory.setPort(port);
        lettuceConnectionFactory.setPassword(password);
        lettuceConnectionFactory.setDatabase(database);
        return lettuceConnectionFactory;
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory());
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

}

4. 在需要使用Redis的类中注入RedisTemplate：

@Service
public class RedisService {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    public void set(String key, Object value) {
        redisTemplate.opsForValue().set(key, value);
    }

    public Object get(String key) {
        return redisTemplate.opsForValue().get(key);
    }

}

以上就是Java的Spring Boot链接Redis的代码示例，其中使用了Lettuce作为Redis的客户端。