RedisTemplate 默认使用的序列化机制为 JdkSerializationRedisSerializer，序列化后的值一般如下图。  <br/> 我们可以自定义序列化机制，比如将对象序列化为 JSON 字符串。步骤如下： **1. 配置类中自定义RedisTemplate模板** ```java @Configuration public class CustomRedisConfig { @Bean("stuRedisTemplate") public RedisTemplate<Object, Student> stuRedisTemplate(RedisConnectionFactory factory) throws UnknownHostException { RedisTemplate<Object, Student> template = new RedisTemplate<>(); template.setConnectionFactory(factory); //采用JSON的序列化机制 Jackson2JsonRedisSerializer<Student> ser = new Jackson2JsonRedisSerializer<>(Student.class); template.setDefaultSerializer(ser); return template; } } ``` **2. 使用自定义的模板类操作Redis数据库** ```java @RunWith(SpringRunner.class) @SpringBootTest public class Redis01ApplicationTests { @Autowired @Qualifier("stuRedisTemplate") private RedisTemplate<Object, Student> stuRedisTemplate; @Test public void test03() { Student student1 = new Student(200, "张三", 25); stuRedisTemplate.opsForValue().set("stu-02", student1); Student student2 = (Student) stuRedisTemplate.opsForValue().get("stu-02"); System.out.println(student2); //Student(id=200, name=张三, age=25) } } ``` **3. 保存到Redis数据库的JSON字符串**