在Spring 4中干涸通用RedisTemplate

Question

public abstract class RedisService<T> implements InitializingBean {

private final String VALUE_KEY_PREFIX;
private final String SET_KEY;

@Autowired
private RedisTemplate<String, T> valueTemplate;

@Autowired
private StringRedisTemplate stringTemplate;

private SetOperations<String, String> setOperations;
private ValueOperations<String, T> valueOperations; 
// and so on...
}

@Bean
public RedisTemplate<String, MyTypeA> myTypeARedisTemplate() {
    RedisTemplate<String, MyTypeA> template = new RedisTemplate<>();

    template.setKeySerializer(stringRedisSerializer());
    template.setHashKeySerializer(stringRedisSerializer());
    template.setValueSerializer(new Jackson2JsonRedisSerializer<>(MyTypeA.class));
    template.setConnectionFactory(jedisConnectionFactory());

    return template;
}

@Bean
public RedisTemplate<String, MyTypeB> myTypeBRedisTemplate() {
    RedisTemplate<String, MyTypeB> template = new RedisTemplate<>();

    template.setKeySerializer(stringRedisSerializer());
    template.setHashKeySerializer(stringRedisSerializer());
    template.setValueSerializer(new Jackson2JsonRedisSerializer<>(MyTypeB.class));
    template.setConnectionFactory(jedisConnectionFactory());

    return template;
}
// ... for N MyType classes.

@Service
public class MyTypeAService extends RedisService<MyTypeA> { 

有没有更干练的方法可以用我的Java配置创建这些RedisTemplate@bean？

Answer 1

我也有同样的问题。您可以为此创建一个泛型bean，并使用GenricJackson2JsonRedisserializer。问题是，通过使用这一点，json将保存一些额外的数据，以便以后进行反序列化。

另一种方法是使用Jackson2JsonRedisSerializer，但它需要泛型类型的类实例才能工作，我不知道如何获得。

@Bean("objectRedisTemplate")
public <T> RedisTemplate<String, T> objectRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
    RedisTemplate<String, T> redisTemplate = new RedisTemplate<>();

    redisTemplate.setConnectionFactory(redisConnectionFactory);

    RedisSerializer<String> serializer = new StringRedisSerializer();
    redisTemplate.setKeySerializer(serializer);
    redisTemplate.setHashKeySerializer(serializer);

    redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());

    return redisTemplate;
}

cache类上的用法：

@Autowired
@Qualifier("objectRedisTemplate")
private RedisTemplate<String, MyTypeA> redisTemplate;