【Redis】Redis序列化处理

1、在Jave中，需要考虑到对象的序列化问题，毕竟Redis的读写速度是非常快的，如果不能进行对象的存储，那么这样的意义就不大了

2、准备一个对象的序列化处理类，通过对象的形式进行存储

此程序类有如下实现要求 实现RedisSerializer

//此时定义的序列化操作表示可以序列化所有类的对象
public class RedisObjectSerializer implements RedisSerializer<Object> {
    //为了方便对象与数组的转换，所以准备出俩个转换器
  private Converter<Object, byte[]> serializingConverter = new SerializingConverter();
    private Converter<byte[], Object> deserializingConverter = new DeserializingConverter();
    private static final byte[] EMPTY_BYTE_ARRAY = new byte[0];

    @Override
    public byte[] serialize(Object obj) throws SerializationException {
        if (obj == null) {//
            return this.EMPTY_BYTE_ARRAY;
        }
        return this.serializingConverter.convert(obj);//将对象转换为字节数组
    }

    @Override
    public Object deserialize(byte[] data) throws SerializationException {
        if (data == null || data.length == 0) {
            return null;
        }
        return deserializingConverter.convert(data);//将字节数组转换为对象
    }
}

3、想要让RedisTemplate操作模板知道有这样一个序列化程序类存在，那么久不能采用RedisTemplate的默认形式，需要准备一个单独的程序类进行处理

@ITestOrConfiguration
public class RedisConfig {
    @Bean
    public RedisTemplate<String, Object> getRedisTemplate(RedisConnectionFactory factory){
        RedisTemplate<String, Object> redisTemplate=new RedisTemplate<String, Object>();
        redisTemplate.setConnectionFactory(factory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());//key的序列化类型
        redisTemplate.setValueSerializer(new RedisObjectSerializer());//value的序列化类型
        return redisTemplate;
    }
}

4、定义Member.java类，需要实现Serializable

@SuppressWarnings("serial")
public class Member implements Serializable {
    private String hid;
    private Integer age;
    private Double salary;
    private Date birthday;
}

5、定义测试类

@SpringBootTest(classes = StartSpringBootMain.class)
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
public class TestRedis {
    @Resource
    private RedisTemplate<String, Object> redisTemplate;
    @Test
    public void testSet() {
        Member vo=new Member();
        vo.setHid("测试一");;
        vo.setAge(20);
        vo.setSalary(23123.231);
        vo.setBirthday(new Date());
        this.redisTemplate.opsForValue().set("hhj",vo);
    }
    @Test
    public void testGet() {
        Member vo=(Member) this.redisTemplate.opsForValue().get("hhj");
        System.out.println(vo.getAge());
    }
}

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