redis序列化设置

redis序列化设置

redis序列化设置，通过自定义redisTemplate配置

@Component
public class RedisConfig {
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        StringRedisSerializer strRedisSerializer = new StringRedisSerializer();
        //序列化key值
        redisTemplate.setKeySerializer(strRedisSerializer);

        //解决value的序列化方式
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);

        return redisTemplate;
    }
}

到这若测试没问题，下面就不用看了

序列化对象里有org.joda.time.DateTime

1）、报错内容如下

org.springframework.data.redis.serializer.SerializationException: Could not write JSON: Joda date/time type org.joda.time.DateTime not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-joda" to enable handling

org.springframework.data.redis.serializer.SerializationException: Could not write JSON: Joda date/time type `org.joda.time.DateTime` not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-joda" to enable handling (through reference chain: com.xx.XXModel["BBModel"]->com.xx.XXModel["startDate"]);  
...

2）、解决方案：分别自定义时间的序列化和反序列化，以对象形式关联到redisTemplate

分别自定义一个org.joda.time.DateTime的序列化和发序列化类，然后关联到自定义的redisTemplate，代码如下：
1、DateTimeJsonDeserializer

 public class DateTimeJsonDeserializer extends JsonDeserializer<DateTime> {
    @Override
    public DateTime deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JacksonException {
        String dateString = jsonParser.readValueAs(String.class);
        DateTimeFormatter formatter= DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss");

        return DateTime.parse(dateString, formatter);
    }
}

2、DateTimeJsonSerializer

public class DateTimeJsonSerializer extends JsonSerializer<DateTime> {
    @Override
    public void serialize(DateTime dateTime, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        jsonGenerator.writeString(dateTime.toString());
    }
}

3、RedisConfig

@Component
public class RedisConfig {
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        StringRedisSerializer strRedisSerializer = new StringRedisSerializer();
        redisTemplate.setKeySerializer(strRedisSerializer);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper=new ObjectMapper();
        SimpleModule simpleModule=new SimpleModule();
        simpleModule.addSerializer(DateTime.class, new DateTimeJsonSerializer());
        simpleModule.addDeserializer(DateTime.class, new DateTimeJsonDeserializer());
        objectMapper.registerModule(simpleModule);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        return redisTemplate;
    }
}