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. 自定义 RedisTemplate 模板** ```java @Configuration public class CustomRedisConfig { @Bean("stuRedisTemplate") public RedisTemplate<String, Student> stuRedisTemplate(RedisConnectionFactory factory) { RedisTemplate<String, 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; } } ```  <br/> **2. 使用自定义的模板类操作 Redis 数据库** ```java @SpringBootTest class RedisApplicationTests { @Autowired @Qualifier("stuRedisTemplate") private RedisTemplate<String, Student> stuRedisTemplate; @Test public void redisTest3() { Student student = new Student(99, "王五", 24); stuRedisTemplate.opsForValue().set("student02", student); Student student2 = stuRedisTemplate.opsForValue().get("student02"); System.out.println(student2); ///Student(id=99, name=王五, age=24) } } ``` :-:  保存到 Redis 的 JSON 字符串