1、Redis安装引用

1）安装

Windows：Windows上安装配置Redis

Linux：Linux上下载安装配置Redis

2）引用

Maven地址：https://mvnrepository.com/artifact/redis.clients/jedis/3.0.0

Maven项目依赖：

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>3.0.0</version>
</dependency>

2、Redis工具类完整代码

1）基类BaseCache

package com.cjavapy.utils.cache;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.net.URI;
import java.util.Set;
/**
 * 缓存基类
 */
public class BaseCache {
    private static JedisPoolConfig jedisPoolConfig;
    protected static Jedis getJedis() {
        JedisPool jedisPool = null;
        if (jedisPoolConfig == null) {
            jedisPoolConfig = new JedisPoolConfig();
            jedisPoolConfig.setMaxTotal(1024);
            jedisPoolConfig.setMaxIdle(100);
            jedisPoolConfig.setMaxWaitMillis(100);
            jedisPoolConfig.setTestOnBorrow(false);//jedis 第一次启动时，会报错
            jedisPoolConfig.setTestOnReturn(true);
        }
        String ip = "192.168.31.22";
        int port = 6379;
        int timeout = 2000;
        String password = "";
        // 初始化JedisPool
        if (password == null || "".equals(password))
            jedisPool = new JedisPool(jedisPoolConfig, ip, port, timeout);
        else
            jedisPool = new JedisPool(jedisPoolConfig, ip, port, timeout, password);
        return jedisPool.getResource();
    }
    /**
     * 删除数据
     *
     * @param pattern
     */
    public static void removeData(String pattern) {
        Jedis redis = null;
        try {
            redis = getJedis();
            Set<String> keys = redis.keys("*" + pattern);
            if (keys == null || keys.size() == 0) {
                return;
            }
            for (String key : keys) {
                redis.del(key);
            }
        } finally {
            if (redis != null) {
                redis.close();
            }
        }
    }
}

2）实现类

package com.cjavapy.utils.cache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.Jedis;
public class CommonCache extends BaseCache {
    private final static Logger logger = LoggerFactory.getLogger(CommonCache.class);
    /**
     * 获取值(用户ID)
     *
     * @returne
     */
    public static String getValue(String key) {
        Jedis redis = null;
        //long startTime = DateUtil.getCurrentDate().getTime();
        try {
            redis = getJedis();
            return redis.get(key);
        } finally {
            if (redis != null) {
                redis.close();
            }
            //logger.debug( key + " redis 耗时：" + (DateUtil.getCurrentDate().getTime() - startTime));
        }
    }
    /**
     * 获取值(用户ID)
     *
     * @returne
     */
    public static String getAndRemoveValue(String key) {
        Jedis redis = null;
        String value = "";
        //long startTime = DateUtil.getCurrentDate().getTime();
        try {
            redis = getJedis();
            value = redis.get(key);
            removeValue(key);
        } finally {
            if (redis != null) {
                redis.close();
            }
            //logger.debug( key + "getAndRemoveValue redis 耗时：" + (DateUtil.getCurrentDate().getTime() - startTime));
        }
        return value;
    }
    /**
     * 保存数据
     *
     * @param key
     */
    public static void setValue(String key, String value, int expireTime) {
        Jedis redis = null;
        try {
            redis = getJedis();
            redis.set(key, value);
            redis.expire(key, expireTime);
        } finally {
            if (redis != null) {
                redis.close();
            }
        }
    }
    /**
     * 保存数据
     *
     * @param key
     */
    public static void setValue(String key, String value) {
        Jedis redis = null;
        try {
            redis = getJedis();
            redis.set(key, value);
        } finally {
            if (redis != null) {
                redis.close();
            }
        }
    }
    public static byte[] getValue(byte[] key) {
        Jedis redis = null;
        //long startTime = DateUtil.getCurrentDate().getTime();
        try {
            redis = getJedis();
            return redis.get(key);
        } finally {
            if (redis != null) {
                redis.close();
            }
            //logger.debug( key + " redis 耗时：" + (DateUtil.getCurrentDate().getTime() - startTime));
        }
    }
    /**
     * 保存数据
     *
     * @param key
     */
    public static void setValue(byte[] key, byte[] value) {
        Jedis redis = null;
        try {
            redis = getJedis();
            redis.set(key, value);
        } finally {
            if (redis != null) {
                redis.close();
            }
        }
    }
    /**
     * 删除记录
     *
     * @param key
     */
    public static void removeValue(String key) {
        Jedis redis = null;
        try {
            redis = getJedis();
            redis.del(key);
        } finally {
            if (redis != null) {
                redis.close();
            }
        }
    }
    /**
     * 重设超时间
     *
     * @param jdi
     * @param expireTime
     */
    public static void resetExpireTime(String jdi, int expireTime) {
        Jedis redis = null;
        try {
            redis = getJedis();
            redis.expire(jdi, expireTime);
        } finally {
            if (redis != null) {
                redis.close();
            }
        }
    }
}