redis springboot

springboot怎么使用redis注解

小亿
93
2023-08-23 08:03:10
栏目: 云计算

在Spring Boot中使用Redis注解,需要完成以下步骤:

  1. 添加Redis依赖:在pom.xml文件中添加Redis相关依赖,例如:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
  1. 配置Redis连接:在application.properties文件中配置Redis连接信息,包括主机、端口、密码等。例如:
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=
  1. 创建Redis配置类:创建一个配置类,用于配置Redis连接工厂和Redis模板等。例如:
@Configuration
@EnableCaching
public class RedisConfig {
@Bean
public RedisConnectionFactory redisConnectionFactory() {
RedisStandaloneConfiguration configuration = new RedisStandaloneConfiguration();
configuration.setHostName("127.0.0.1");
configuration.setPort(6379);
configuration.setPassword(RedisPassword.none());
LettuceConnectionFactory factory = new LettuceConnectionFactory(configuration);
factory.afterPropertiesSet();
return factory;
}
@Bean
public RedisTemplate<Object, Object> redisTemplate() {
RedisTemplate<Object, Object> template = new RedisTemplate<>();
template.setConnectionFactory(redisConnectionFactory());
template.setDefaultSerializer(new GenericJackson2JsonRedisSerializer());
return template;
}
}
  1. 在需要使用Redis的类或方法上添加注解:可以使用@Cacheable@CachePut@CacheEvict等注解来实现缓存操作。例如:
@Service
public class UserService {
@Autowired
private UserRepository userRepository;
@Cacheable(value = "users", key = "#id")
public User getUserById(Long id) {
return userRepository.findById(id).orElse(null);
}
@CachePut(value = "users", key = "#user.id")
public User saveUser(User user) {
return userRepository.save(user);
}
@CacheEvict(value = "users", key = "#id")
public void deleteUser(Long id) {
userRepository.deleteById(id);
}
}
  1. 启用缓存:在启动类上添加@EnableCaching注解,开启缓存功能。例如:
@SpringBootApplication
@EnableCaching
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

这样,就可以在Spring Boot中使用Redis注解进行缓存操作了。

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