一、spring boot 集成Redis方法
- 依赖
<!--redis--><dependency> ???<groupId>org.springframework.boot</groupId> ???<artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency> ???<groupId>org.apache.commons</groupId> ???<artifactId>commons-pool2</artifactId></dependency>
- Redis自定义序列化
@Configurationpublic class RedisConfig { ???@Bean(name = "strRedisTemplate") ???public RedisTemplate<String, String> strRedisTemplate(RedisConnectionFactory factory) { ???????RedisTemplate<String, String> redisTemplate = new RedisTemplate<>(); ???????redisTemplate.setConnectionFactory(factory); ???????// 使用Jackson2JsonRedisSerialize 替换默认序列化(默认采用的是JDK序列化) ???????Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class); ???????ObjectMapper om = new ObjectMapper(); ???????om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); ???????om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); ???????jackson2JsonRedisSerializer.setObjectMapper(om); ???????redisTemplate.setKeySerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setValueSerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setHashKeySerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer); ???????return redisTemplate; ???} ???@Bean(name = "intRedisTemplate") ???public RedisTemplate<String, Integer> intRedisTemplate(RedisConnectionFactory factory) { ???????RedisTemplate<String, Integer> redisTemplate = new RedisTemplate<>(); ???????redisTemplate.setConnectionFactory(factory); ???????// 使用Jackson2JsonRedisSerialize 替换默认序列化(默认采用的是JDK序列化) ???????Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class); ???????ObjectMapper om = new ObjectMapper(); ???????om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); ???????om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); ???????jackson2JsonRedisSerializer.setObjectMapper(om); ???????redisTemplate.setKeySerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setValueSerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setHashKeySerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer); ???????return redisTemplate; ???}}- 使用代码
@Servicepublic class RedisServiceImpl implements IRedisService { ???@Resource(name = "intRedisTemplate") ???private RedisTemplate<String, Integer> intTemplate; ???@Resource(name = "strRedisTemplate") ???private RedisTemplate<String, String> strTemplate; ???@Override ???public void incrHash(String key, String field, Integer value) { ???????intTemplate.opsForHash().increment(key, field, value); ???} ???@Override ???public void incrKey(String key, Integer value) { ???????if(null == key || null == value){ ???????????return; ???????} ???????intTemplate.opsForValue().increment(key,value); ???} ???@Override ???public Integer getInteger(String key) { ???????if(null == key){ ???????????return null; ???????} ???????return intTemplate.opsForValue().get(key); ???}}五、出现问题
使用的时候，发现一个问题，如果我用IntegerTemplate存储值到Redis，会进行序列化，自动为String类型的键和值添加双引号，这是Jackson2JsonRedisSerializer特性，但是使用StringTemplate，存储的String类型的键和值都不带双引号
六、几种序列化对比
这是别人总结的Redis常见的几种序列化方式特性，详细见：参考文章
以下内容引用别人博客
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
我们这里针对StringRedisSerializer，Jackson2JsonRedisSerializer和JdkSerializationRedisSerializer进行测试。
下面是，把3种Serializer保存到Redis中的结果：
1,所有的KeySerializer和HashKeySerializer都使用StringRedisSerializer，用其它Serializer的没有什么意义，就像最上面的例子一样。
2,上面序列化后的值，是保存到redis中的值，从Redis中读取回Java中后，值的内容都是一样的。
从上面的结果不难看出，
1，用StringRedisSerializer进行序列化的值，在Java和Redis中保存的内容是一样的
2，用Jackson2JsonRedisSerializer进行序列化的值，在Redis中保存的内容，比Java中多了一对双引号。
3，用JdkSerializationRedisSerializer进行序列化的值，对于Key-Value的Value来说，是在Redis中是不可读的。对于Hash的Value来说，比Java的内容多了一些字符。
（如果Key的Serializer也用和Value相同的Serializer的话，在Redis中保存的内容和上面Value的差异是一样的，所以我们保存时，只用StringRedisSerializer进行序列化）
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
七、问题原因
出现“存储Integer类型数据，自动序列化（加双引号），存储String类型，序列化失败（没有双引号）”的原因是：
我在设置自定义序列化的时候，为Bean起了个名称叫："StringRedisTemplate",这个名称和StringRedisTemplate重名了，spring注入的时候，注入的是StringRedisTemplate，不是我更改过序列化方式后的Template对象。
@Bean(name = "stringRedisTemplate") ???public RedisTemplate<String, String> strRedisTemplate(RedisConnectionFactory factory) { ???????RedisTemplate<String, String> redisTemplate = new RedisTemplate<>(); ???????redisTemplate.setConnectionFactory(factory); ???????// 使用Jackson2JsonRedisSerialize 替换默认序列化(默认采用的是JDK序列化) ???????Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class); ???????ObjectMapper om = new ObjectMapper(); ???????om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); ???????om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); ???????jackson2JsonRedisSerializer.setObjectMapper(om); ???????redisTemplate.setKeySerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setValueSerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setHashKeySerializer(jackson2JsonRedisSerializer); ???????redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer); ???????return redisTemplate; ???}真是个傻逼错误
redis使用Jackson2JsonRedisSerializer序列化问题
原文地址：https://www.cnblogs.com/donfaquir/p/10594199.html