除了String类型，实战中我们还经常会在Redis中存储对象，这时候我们就会想是否可以使用类似RedisTemplate<String, User>来初始化并进行操作。但是Spring Boot并不支持直接使用，需要我们自己实现RedisSerializer<T>接口来对传入对象进行序列化和反序列化，下面我们通过一个实例来完成对象的读写操作。

• 创建要存储的对象：User

  public class User implements Serializable {private static final long serialVersionUID = -1L;private String username;private Integer age;public User(String username, Integer age) {this.username = username;this.age = age;}// 省略getter和setter}
  

  　　

• 实现对象的序列化接口

  public class RedisObjectSerializer implements RedisSerializer<Object> {private Converter<Object, byte[]> serializer = new SerializingConverter();private Converter<byte[], Object> deserializer = new DeserializingConverter();static final byte[] EMPTY_ARRAY = new byte[0];public Object deserialize(byte[] bytes) {if (isEmpty(bytes)) {return null;}try {return deserializer.convert(bytes);} catch (Exception ex) {throw new SerializationException("Cannot deserialize", ex);}}public byte[] serialize(Object object) {if (object == null) {return EMPTY_ARRAY;}try {return serializer.convert(object);} catch (Exception ex) {return EMPTY_ARRAY;}}private boolean isEmpty(byte[] data) {return (data == null || data.length == 0);}
  }

  　　

• 配置针对User的RedisTemplate实例

  @Configuration
  public class RedisConfig {@BeanJedisConnectionFactory jedisConnectionFactory() {return new JedisConnectionFactory();}@Beanpublic RedisTemplate<String, User> redisTemplate(RedisConnectionFactory factory) {RedisTemplate<String, User> template = new RedisTemplate<String, User>();template.setConnectionFactory(jedisConnectionFactory());template.setKeySerializer(new StringRedisSerializer());template.setValueSerializer(new RedisObjectSerializer());return template;}}

  　　

• 完成了配置工作后，编写测试用例实验效果

  @RunWith(SpringJUnit4ClassRunner.class)
  @SpringApplicationConfiguration(Application.class)
  public class ApplicationTests {@Autowiredprivate RedisTemplate<String, User> redisTemplate;@Testpublic void test() throws Exception {// 保存对象User user = new User("超人", 20);redisTemplate.opsForValue().set(user.getUsername(), user);user = new User("蝙蝠侠", 30);redisTemplate.opsForValue().set(user.getUsername(), user);user = new User("蜘蛛侠", 40);redisTemplate.opsForValue().set(user.getUsername(), user);Assert.assertEquals(20, redisTemplate.opsForValue().get("超人").getAge().longValue());Assert.assertEquals(30, redisTemplate.opsForValue().get("蝙蝠侠").getAge().longValue());Assert.assertEquals(40, redisTemplate.opsForValue().get("蜘蛛侠").getAge().longValue());}}
  

  　　

  当然spring-data-redis中提供的数据操作远不止这些，本文仅作为在Spring Boot中使用redis时的配置参考，更多对于redis的操作使用，请参考Spring-data-redis Reference。

• 源码来源