Springboot统一给redis缓存的Key加前缀

第一步：配置redis

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.keyvalue.core.mapping.KeyPrefix;
import org.springframework.data.keyvalue.core.query.KeyValueQuery;
import java.time.Duration;
 
@Configuration
public class RedisConfig {
    public static final String redisPrefix="xxxx:"; 
    @Bean
    public RedisTemplate<String, String> redisTemplate(StringRedisTemplate stringRedisTemplate) {
        RedisTemplate<String, String> template = new RedisTemplate<>();
        template.setKeySerializer(stringRedisTemplate.getKeySerializer());
        template.setValueSerializer(stringRedisTemplate.getValueSerializer());
        template.setHashKeySerializer(stringRedisTemplate.getHashKeySerializer());
        template.setHashValueSerializer(stringRedisTemplate.getHashValueSerializer());
        template.setEnableTransactionSupport(true);
        template.setConnectionFactory(stringRedisTemplate.getConnectionFactory());
 
        // 设置key的前缀
        KeyPrefix keyPrefix = new KeyPrefix() {
            @Override
            public byte[] prefix(String key) {
                return (redisPrefix + ":" + key).getBytes();
            }
        };
        template.setKeyGenerator(keyPrefix);
 
        return template;
    }
}

第二步：在使用

//在代码中注入RedisTemplate
@Autowired
private RedisTemplate<String, String> redisTemplate;
 
//写个方法调用
public void setValue(String key, String value) {
   // //使用，添加一个缓存，添加后使用redis管理工具查看，此时会发现key将会自动加上前缀"redisPrefix:"
    redisTemplate.opsForValue().set(key, value, Duration.ofMinutes(300));
   
}