RedisUtil

package com.fengqing.rushbuy.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;

@Component
public class RedisUtil {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    //添加数据
    public void set(String key, String value){
        this.stringRedisTemplate.opsForValue().set(key, value);
    }

    //添加数据(带超时时间)
    public void setex(String key, String value, Long seconds){
        this.stringRedisTemplate.opsForValue().set(key, value, seconds, TimeUnit.SECONDS);
    }

    //删除
    public void delete(String key){
        this.stringRedisTemplate.delete(key);
    }

    //判断key是否存在
    public boolean hasKey(String key){
        return this.stringRedisTemplate.hasKey(key);
    }

    //获取
    public String get(String key){
        return this.stringRedisTemplate.opsForValue().get(key);
    }

    //加锁
    public boolean lock(String key, Long expire){
        RedisConnection redisConnection = this.stringRedisTemplate.getConnectionFactory().getConnection();
        //加锁成功设置超时时间
        if(redisConnection.setNX(key.getBytes(), "fengqing".getBytes())){//加锁成功
            this.stringRedisTemplate.expire(key, expire, TimeUnit.SECONDS);
            redisConnection.close();
            return true;
        } else { //加锁失败
            redisConnection.close();
            return false;
        }
    }

    //解锁
    public void unlock(String key){
        this.stringRedisTemplate.delete(key);
    }
}

 

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