SpringBoot简单的直接连接Redis数据库+操作redis数据库存取值

左手的ㄟ右手 2022-05-13 06:44 184阅读 0赞

import com.fasterxml.jackson.annotation.JsonAutoDetect;
    import com.fasterxml.jackson.annotation.PropertyAccessor;
    import com.fasterxml.jackson.databind.ObjectMapper;
    import org.springframework.cache.CacheManager;
    import org.springframework.cache.annotation.CachingConfigurerSupport;
    import org.springframework.cache.annotation.EnableCaching;
    import org.springframework.cache.interceptor.KeyGenerator;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.cache.RedisCacheManager;
    import org.springframework.data.redis.connection.RedisConnectionFactory;
    import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.core.StringRedisTemplate;
    import org.springframework.data.redis.serializer.GenericToStringSerializer;
    import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
    import org.springframework.data.redis.serializer.StringRedisSerializer;
    
    @Configuration
    @EnableCaching
    public class RedisConfig  {
    
            @Bean
            public RedisConnectionFactory redisCF(){
                //如果什么参数都不设置，默认连接本地6379端口
                JedisConnectionFactory factory = new JedisConnectionFactory();
                factory.setPort(端口);
               factory.setHostName("IP地址");
            
                factory.setPassword("密码");
             //设置超时时间 
           factory.setTimeout(100000);
    
                return factory;
            }
    
      /*  @Bean
        public RedisTemplate redisTemplate(RedisConnectionFactory factory){
            //创建一个模板类
            RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
            //将刚才的redis连接工厂设置到模板类中
            template.setConnectionFactory(factory);
            return template;
        }*/
    
    
    
      @Bean
        public RedisTemplate redisTemplate(RedisConnectionFactory factory) {
          StringRedisTemplate template = new StringRedisTemplate(factory);
          //定义key序列化方式
          //RedisSerializer<String> redisSerializer = new StringRedisSerializer();//Long类型会出现异常信息;需要我们上面的        自定义key生成策略，一般没必要
          //定义value的序列化方式
          Jackson2JsonRedisSerializer 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);
    
          // template.setKeySerializer(redisSerializer);
          template.setValueSerializer(jackson2JsonRedisSerializer);
          template.setHashValueSerializer(jackson2JsonRedisSerializer);
          template.afterPropertiesSet();
          return template;
        }
        }

使用方式：

以下为伪代码，仅作自学记录。

创建一个controller，

@Autowired
    private RedisConnectionFactory factory;
    
    @RequestMapping("/test1")
    public void testRedis() {
        //得到一个连接
        RedisConnection conn = factory.getConnection();
        //conn.set("hello".getBytes(), "world".getBytes());
        conn.set("siwei".getBytes(), "test1".getBytes());
        System.out.println(new String(conn.get("siwei".getBytes())));
    }

@Autowired
    StringRedisTemplate template;

Map<Object, Object> resultMap = template.opsForHash().entries(RedisKey);
    // System.out.println("resultMap:" + resultMap);
    String value1 = (String) template.opsForHash().get(RedisKey, 里面的Key);

// System.out.println("value:" + value1);

JSONObject jsonObjectData = JSON.parseObject(value1);
    // System.out.println(jsonObjectData);
    
    String 取数据 = jsonObjectData.getString(字段值名称);