@Test
public void HashOperations() {
    Person person = new Person("kobe","byrant");
    person.setAddress(new Address("洛杉磯","美國(guó)"));
    //使用hash的方法存儲(chǔ)對(duì)象數(shù)據(jù)（一個(gè)屬性一個(gè)屬性的存，下節(jié)教大家簡(jiǎn)單的方法）
    hashOperations.put("hash:player","firstname",person.getFirstname());
    hashOperations.put("hash:player","lastname",person.getLastname());
    hashOperations.put("hash:player","address",person.getAddress());

    String firstName = (String)hashOperations.get("hash:player","firstname");
    System.out.println(firstName);
}

import static org.junit.jupiter.api.Assertions.assertEquals;

@SpringBootTest
public class RedisConfigTest3 {

    @Resource(name="redisTemplate")
    private HashOperations<String, String, Object> jacksonHashOperations;
    //注意這里的false，下文會(huì)講解
    private HashMapper<Object, String, Object> jackson2HashMapper = new Jackson2HashMapper(false);

    @Test
    public void testHashPutAll(){

        Person person = new Person("kobe","bryant");
        person.setId("kobe");
        person.setAddress(new Address("洛杉磯","美國(guó)"));

        //將對(duì)象以hash的形式放入redis數(shù)據(jù)庫(kù)
        Map<String,Object> mappedHash = jackson2HashMapper.toHash(person);
        jacksonHashOperations.putAll("player:" + person.getId(), mappedHash);

        //將對(duì)象從數(shù)據(jù)庫(kù)取出來(lái)
        Map<String,Object> loadedHash = jacksonHashOperations.entries("player:" + person.getId());
        Object map = jackson2HashMapper.fromHash(loadedHash);
        Person getback = new ObjectMapper().convertValue(map,Person.class);

        //Junit5,驗(yàn)證放進(jìn)去的和取出來(lái)的數(shù)據(jù)一致
        assertEquals(person.getFirstname(),getback.getFirstname());
    }
}

@RedisHash("people")   //注意這里的person，下文會(huì)說(shuō)明
public class Person {
  @Id
  String id;
  
  //其他和上一節(jié)代碼一樣

}

//泛型第二個(gè)參數(shù)是id的數(shù)據(jù)類(lèi)型
public interface PersonRepository extends CrudRepository<Person, String> {
 // 繼承CrudRepository，獲取基本的CRUD操作
}

@SpringBootTest
public class RedisRepositoryTest {

    @Resource
    PersonRepository personRepository;

    @Test
    public void test(){

        Person rand = new Person("zimug", "漢神");
        rand.setAddress(new Address("杭州", "中國(guó)"));
        personRepository.save(rand);  //存

        Optional<Person> op = personRepository.findById(rand.getId()); //取
        Person p2 = op.get();

        personRepository.count(); //統(tǒng)計(jì)Person的數(shù)量
        personRepository.delete(rand);  //刪除person對(duì)象rand
    }
}