Spring Redis（3）序列化

以你之姓@ 2022-06-17 00:18 234阅读 0赞

# 序列化 #

Spring Data Redis支持JDK序列化、Json序列化、XML序列化  
\- JDK序列化：默认采用JDK序列化方式的类JdkSerializationRedisSerializer，速度快但占用空间较大,对象必须实现java.io.Serializable接口  
\- Json序列化：空间占用小，包括GenericJackson2JsonRedisSerializer和Jackson2JsonRedisSerializer 两种，其中GenericJackson2JsonRedisSerializer无需为各种类型单独定义Bean  
\- XML序列化：OxmSerializer ，速度慢空间占用较大

<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" p:connection-factory-ref="jedisConnectionFactory" />
        
        <bean id="serializedRedisTemplate" class="org.springframework.data.redis.core.RedisTemplate" p:connection-factory-ref="jedisConnectionFactory" p:keySerializer-ref="genericJackson2JsonRedisSerializer" p:valueSerializer-ref="genericJackson2JsonRedisSerializer" p:hashKeySerializer-ref="genericJackson2JsonRedisSerializer" p:hashValueSerializer-ref="genericJackson2JsonRedisSerializer" />
        
        <bean id="jdkSerializationRedisSerializer" class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
        
        
        
        <bean id="genericJackson2JsonRedisSerializer" class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer" />

也可以在代码中设置序列化方式

@RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration({ "/spring/spring-context.xml" })
    public class SerializedRedisTemplateTest { 
    
        // inject the actual template
        @Autowired
        @Qualifier("serializedRedisTemplate")
        private RedisTemplate<String, Student> redisTemplate;
    
        /** * Description: 展示序列化Value值功能及手动置顶序列化方法<br> * Create By: <br> * Create Date: 2017年3月20日 上午9:05:02 */
        @Test
        public void testValueOperations() {
            String key = "SerializedRedisTemplateTest:TEST:String:1";
            ValueOperations<String, Student> valueOp = redisTemplate.opsForValue();
            redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<Student>(Student.class));
            Student stu = new Student("1", 1);
            valueOp.set(key, stu);
            Assert.assertEquals(stu, valueOp.get(key));
            redisTemplate.delete(key);
            Assert.assertNull(valueOp.get(key));
    
        }
    
        /** * Description: 展示序列化HashValue值功能<br> * Create By: <br> * Create Date: 2017年3月20日 上午9:05:48 */
        @Test
        public void testHashOperations() {
            String key = "SerializedRedisTemplateTest:TEST:Hash:1";
            HashOperations<String, String, Student> op = redisTemplate.opsForHash();
            Student stu1 = new Student("1", 1);
            op.put(key, "1", stu1);
    
            Map<String, Student> map = new HashMap<String, Student>();
            Student stu2 = new Student("2", 1);
            map.put("2", stu2);
            Student stu3 = new Student("3", 1);
            map.put("3", stu3);
            Student stu4 = new Student("4", 1);
            map.put("4", stu4);
            Student stu5 = new Student("5", 1);
            map.put("5", stu5);
    
            op.putAll(key, map);
    
            Assert.assertEquals(stu4, op.get(key, stu4.getName()));
    
            Assert.assertEquals(5, op.entries(key).size());
    
            op.delete(key, "4", "5");
            Assert.assertEquals(3, op.entries(key).size());
    
            redisTemplate.delete(key);
            Assert.assertEquals(0, op.entries(key).size());
    
        }
    
    }