下面我将为你详细讲解Spring Boot集成Redis,并自定义对象序列化操作的攻略:
1. 集成Redis
1.1 添加依赖
首先需要在maven项目中添加Redis的依赖,这里以Spring Boot 2.x版本为例,添加以下依赖:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
1.2 配置Redis连接信息
配置redis连接信息,包括redis的host、port、password等,以application.yml为例,示例如下:
spring:
redis:
host: localhost
port: 6379
password: 123456
1.3 配置RedisTemplate
在SpringBoot中,我们可以使用RedisTemplate对Redis进行操作。在代码中,我们需要定义RedisTemplate,并设置序列化方式。
这里将RedisTemplate泛型定义为\
以下为配置RedisTemplate的示例:
@Configuration
public class RedisConfig {
@Autowired
private RedisConnectionFactory redisConnectionFactory;
@Bean
public RedisTemplate<String, Object> redisTemplate() {
RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(redisConnectionFactory);
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(Object.class));
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
redisTemplate.setHashValueSerializer(new Jackson2JsonRedisSerializer<>(Object.class));
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
}
1.4 测试Redis
最后,在代码中使用RedisTemplate进行测试即可:
@Autowired
private RedisTemplate<String, Object> redisTemplate;
@Test
public void test() {
redisTemplate.opsForValue().set("key", "value");
String value = (String) redisTemplate.opsForValue().get("key");
System.out.println(value);
}
2. 自定义对象序列化操作
默认情况下,Spring Boot使用JdkSerializationRedisSerializer来对对象进行序列化操作。这种方式不仅效率较低,而且存在安全性问题。因此,我们需要使用更加高效、安全的序列化方式,如Jackson2JsonRedisSerializer。
下面,我将介绍如何使用自定义序列化操作:
2.1 创建自定义序列化类
首先,创建一个自定义序列化类,实现RedisSerializer接口,示例代码如下:
public class ObjectRedisSerializer implements RedisSerializer<Object> {
private final ObjectMapper objectMapper;
public ObjectRedisSerializer() {
this.objectMapper = new ObjectMapper();
}
public Object deserialize(byte[] bytes) throws SerializationException {
try {
return (bytes == null ? null : objectMapper.readValue(bytes, Object.class));
} catch (Exception ex) {
throw new SerializationException("Could not deserialize: " + ex.getMessage(), ex);
}
}
public byte[] serialize(Object object) throws SerializationException {
try {
return (object == null ? null : objectMapper.writeValueAsBytes(object));
} catch (Exception ex) {
throw new SerializationException("Could not serialize: " + ex.getMessage(), ex);
}
}
}
2.2 配置RedisTemplate
配置RedisTemplate,使用自定义的序列化方式,示例代码如下:
@Configuration
public class RedisConfig {
@Autowired
private RedisConnectionFactory redisConnectionFactory;
@Bean
public RedisTemplate<String, Object> redisTemplate() {
RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(redisConnectionFactory);
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(new ObjectRedisSerializer());
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
redisTemplate.setHashValueSerializer(new ObjectRedisSerializer());
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
}
2.3 测试Redis
最后,在代码中使用自定义序列化类进行测试即可:
public class User {
private String name;
private int age;
// Getter / Setter...
}
@Test
public void test() {
redisTemplate.opsForValue().set("user", new User("Tom", 18));
User user = (User) redisTemplate.opsForValue().get("user");
System.out.println(user.getName()); // 输出 Tom
}
以上就是Spring Boot集成Redis,并自定义对象序列化操作的攻略。希望对你有所帮助。
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