1.RedisTemplate和StringRedisTemplate的区别
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StringRedisTemplate继承RedisTemplate
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两者的数据是不共通的（默认的序列化机制导致key不一样）
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StringRedisTemplate默认采用的是String的序列化策略
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RedisTemplate默认采用的是JDK的序列化策略，会将数据先序列化成字节数组然后在存入Redis数据库
针对区别的第3点和第4点
查看后执行的后台打印
redis可视化工具中查看数据
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总结
- 当redis数据库里面本来操作的是字符串数据的时候，那使用StringRedisTemplate即可
- 数据是复杂的对象类型，那么使用RedisTemplate是更好的选择
1.1序列化机制
想要改变RedisTemplate生成的key和value，就要使用序列化机制
新建一个配置类RedisTemplateConfiguration
package net.xdclass.xdclassredis.config;import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;@Configuration
public class RedisTemplateConfiguration {@Beanpublic RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();redisTemplate.setConnectionFactory(redisConnectionFactory);// 使用Jackson2JsonRedisSerialize 替换默认序列化
// Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);ObjectMapper objectMapper = new ObjectMapper();objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
// jackson2JsonRedisSerializer.setObjectMapper(objectMapper);Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(objectMapper, Object.class);// 设置key和value的序列化规则redisTemplate.setKeySerializer(new StringRedisSerializer());redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);// 设置hashKey和hashValue的序列化规则redisTemplate.setHashKeySerializer(new StringRedisSerializer());redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);// 设置支持事物//redisTemplate.setEnableTransactionSupport(true);redisTemplate.afterPropertiesSet();return redisTemplate;}}
新建一个实例对象UserDo
package net.xdclass.xdclassredis.model;import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class UserDo{private int id;private String name;private String pwd;}
测试一下
执行这个单元测试，查看redis的可视化工具
如需要代码，可在资源中自取！！！
