jedis连接redis

1 pom引用

<dependency>   <groupId>org.springframework</groupId>   <artifactId>spring-aop</artifactId>   <version>4.3.7.RELEASE</version></dependency><dependency>   <groupId>redis.clients</groupId>   <artifactId>jedis</artifactId>   <version>2.9.0</version></dependency><dependency>   <groupId>cglib</groupId>   <artifactId>cglib</artifactId>   <version>3.2.5</version></dependency><dependency>   <groupId>org.aspectj</groupId>   <artifactId>aspectjrt</artifactId>   <version>1.8.10</version></dependency><dependency>   <groupId>org.aspectj</groupId>   <artifactId>aspectjweaver</artifactId>   <version>1.8.10</version></dependency>

2 配置文件

#--------------------------------------------------------## 缓存配置#--------------------------------------------------------##redis.address = 111.111.111.111#redis.password = redis#哨兵配置redis.sentinel.address = 111.111.111.111:26379,111.111.111.112:26379,111.111.111.113:26378redis.sentinel.password = redisredis.master.name = master8025

3 jedis配置

这里用了很多spring的注解，jar的引入缺少不了spring。

这里配置的是哨兵机制的，如果只有一个节点的服务器的话，这里面的配置也有，但在init 、destroy等地方需要调整一下，setJedisSentinelPool改为setJedisPool

import org.apache.commons.lang.StringUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisPool;import redis.clients.jedis.JedisPoolConfig;import redis.clients.jedis.JedisSentinelPool;import javax.annotation.PostConstruct;import javax.annotation.PreDestroy;import java.util.HashSet;import java.util.Set;@Componentpublic class JedisUtil{    private Logger logger = LoggerFactory.getLogger(this.getClass());    @Value("${redis.master.name:}")    private String masterName;    @Value("${redis.sentinel.address:}")    private String sentinelAddress;    @Value("${redis.sentinel.password:}")    private String sentinelPassword;    //Redis服务器IP    @Value("${redis.address:}")    private String address;    //Redis的端口号    @Value("${redis.port:6379}")    private int port;    //访问密码    @Value("${redis.password:}")    private String password;    //可用连接实例的最大数目，默认值为8；    //如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。    @Value("${redis.maxTotal:60}")    private int maxTotal;    //控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值也是8。    @Value("${redis.maxIdle:20}")    private int maxIdle;    //控制一个pool最少有多少个状态为idle(空闲的)的jedis实例，默认值也是0。    @Value("${redis.minIdle:10}")    private int minIdle;    //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException；    @Value("${redis.maxWaitMillis:3000}")    private int maxWaitMillis;    @Value("${redis.timeout:3000}")    private int timeout;    //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；    @Value("${redis.testOnBorrow:true}")    private boolean testOnBorrow;    private JedisPool jedisPool;    private JedisSentinelPool jedisSentinelPool;    private JedisPoolConfig config;    public void initJedisPoolConfig(){        config = new JedisPoolConfig();        config.setMaxTotal(maxTotal);        config.setMaxIdle(maxIdle);        config.setMinIdle(minIdle);        config.setMaxWaitMillis(maxWaitMillis);        config.setTestOnBorrow(testOnBorrow);    }    public void setJedisPool(JedisPool jedisPool){        this.jedisPool = jedisPool;    }    public void setJedisSentinelPool(JedisSentinelPool jedisSentinelPool){        this.jedisSentinelPool = jedisSentinelPool;    }    public JedisPool getJedisPool(){        try {            initJedisPoolConfig();            return new JedisPool(config, address, port, timeout, password);        } catch (Exception e) {            logger.error("redis未连接成功",e);            return null;        }    }    public JedisSentinelPool getJedisSentinelPool(){        try {            initJedisPoolConfig();            Set<String> sentinelSet = new HashSet<String>();            String[] sentinelString = sentinelAddress.split(",");            for (String sentinelAddr : sentinelString){                sentinelSet.add(sentinelAddr);                System.out.println(sentinelAddr);            }            return new JedisSentinelPool(masterName,sentinelSet,config,timeout,sentinelPassword);        } catch (Exception e) {            logger.error("redis未连接成功",e);            return null;        }    }    public void reloadJedisPool(){        this.setJedisPool(this.getJedisPool());    }    public void reloadJedisSentinelPool(){        this.setJedisSentinelPool(this.getJedisSentinelPool());    }    /**     * 初始化Redis连接池     */    @PostConstruct    public void init(){        if (StringUtils.isNotBlank(sentinelAddress)){            jedisSentinelPool = this.getJedisSentinelPool();        }else {            logger.info("redis连接池未初始化：sentinelAddress = [{}]",sentinelAddress);        }    }    /**     * 销毁Redis连接池     */    @PreDestroy    public void destroy(){        if (jedisSentinelPool != null){            jedisSentinelPool.close();        }    }    /**     * 获取Jedis实例     * @return     */    public synchronized Jedis getJedis() {        try {            if (jedisSentinelPool != null) {                Jedis resource = jedisSentinelPool.getResource();                return resource;            } else {                logger.info("jedisPool为null");                return null;            }        } catch (Exception e) {            logger.error("redis服务器没有连接上,获取redis资源出现异常",e);            return null;        }    }    /**     * 释放jedis资源     * @param jedis     */    public void closeJedis(Jedis jedis) {        if (jedis != null) {            jedis.close();        }    }        public static void main(String[] args) {        Logger logger = LoggerFactory.getLogger(JedisUtil.class);        Set<String> sentinelSet = new HashSet<String>();        sentinelSet.add("111.111.80.26:26379");        sentinelSet.add("111.111.80.25:26379");        sentinelSet.add("111.111.80.26:26378");        sentinelSet.add("111.111.80.25:26378");        JedisSentinelPool pool =  new JedisSentinelPool("master8025",sentinelSet,"redis");        Jedis jedis = null;        try {            jedis = pool.getResource();            jedis.set("5","5");            jedis.expire("5",300);        }catch (Exception e){            logger.error(e.getMessage(),e);        }finally {            System.out.println("finally");            if (jedis != null){                jedis.close();            }            pool.close();        }    }}

4 提供对redis调用的接口

这里是一些对redis调用封装的接口，其中lifespan设置的是在redis中生命周期

import com.cache.service.IJedisService;import com.cache.util.JedisUtil;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.util.CollectionUtils;import redis.clients.jedis.Jedis;import java.io.*;import java.util.List;import java.util.Map;import java.util.Set;@Servicepublic class JedisServiceImpl implements IJedisService{    @Autowired    private JedisUtil jedisUtil;    @Override    public void add(String key, String value) {        Jedis jedis = jedisUtil.getJedis();        if (jedis != null) {            jedis.set(key, value);            jedisUtil.closeJedis(jedis);        }    }    @Override    public void add(String key, String value,int lifespan) {        Jedis jedis = jedisUtil.getJedis();        if (jedis != null) {            jedis.setex(key, lifespan, value);            jedisUtil.closeJedis(jedis);        }    }    @Override    public String get(String key) {        Jedis jedis = jedisUtil.getJedis();        if (jedis == null){            return null;        }        String value = jedis.get(key);        jedisUtil.closeJedis(jedis);        return value;    }    @Override    public void addList(String key, List<String> value) {        if (!CollectionUtils.isEmpty(value)){            Jedis jedis = jedisUtil.getJedis();            if (jedis != null) {                for (String s : value) {                    jedis.lpush(key, s);                }                jedisUtil.closeJedis(jedis);            }        }    }    @Override    public List<String> getList(String key) {        Jedis jedis = jedisUtil.getJedis();        if (jedis == null){            return null;        }        List<String> value = jedis.lrange(key,0,-1);        jedisUtil.closeJedis(jedis);        return value;    }    @Override    public List<String> getList(String key,long start, long end) {        Jedis jedis = jedisUtil.getJedis();        if (jedis == null){            return null;        }        List<String> value = jedis.lrange(key,start,end);        jedisUtil.closeJedis(jedis);        return value;    }    @Override    public void addMap(String key, Map<String, String> value) {        if (!CollectionUtils.isEmpty(value)){            Jedis jedis = jedisUtil.getJedis();            if (jedis != null) {                jedis.hmset(key, value);                jedisUtil.closeJedis(jedis);            }        }    }    @Override    public Map<String,String> getMap(String key) {        Jedis jedis = jedisUtil.getJedis();        if (jedis == null){            return null;        }        Map<String,String> value = jedis.hgetAll(key);        jedisUtil.closeJedis(jedis);        return value;    }    @Override    public void addSet(String key, Set<String> value) {        if (!CollectionUtils.isEmpty(value)){            Jedis jedis = jedisUtil.getJedis();            if (jedis != null) {                for (String s : value) {                    jedis.sadd(key, s);                }                jedisUtil.closeJedis(jedis);            }        }    }    @Override    public Set<String> getSet(String key) {        Jedis jedis = jedisUtil.getJedis();        if (jedis == null){            return null;        }        Set<String> value = jedis.smembers(key);        jedisUtil.closeJedis(jedis);        return value;    }    @Override    public void addObject(String key, Object value) throws IOException {        Jedis jedis = jedisUtil.getJedis();        if (jedis != null) {            ByteArrayOutputStream bos = new ByteArrayOutputStream();            ObjectOutputStream oos = new ObjectOutputStream(bos);            oos.writeObject(value);            byte[] byteArray = bos.toByteArray();            oos.close();            bos.close();            jedis.set(key.getBytes(), byteArray);            jedisUtil.closeJedis(jedis);        }    }    @Override    public Object getObject(String key) throws IOException, ClassNotFoundException {        Jedis jedis = jedisUtil.getJedis();        if (jedis == null){            return null;        }        byte [] bs = jedis.get( key.getBytes());        if (bs == null){            jedisUtil.closeJedis(jedis);            return null;        }        ByteArrayInputStream bis =  new ByteArrayInputStream(bs);        ObjectInputStream inputStream =  new ObjectInputStream(bis);        Object value = inputStream.readObject();        inputStream.close();        bis.close();        jedisUtil.closeJedis(jedis);        return value;    }    @Override    public void setLifespan(String key, int lifespan) {        Jedis jedis = jedisUtil.getJedis();        if (jedis != null) {            jedis.expire(key, lifespan);            jedisUtil.closeJedis(jedis);        }    }    @Override    public void setObjectLifespan(String key, int lifespan) {        Jedis jedis = jedisUtil.getJedis();        if (jedis != null) {            jedis.expire(key.getBytes(), lifespan);            jedisUtil.closeJedis(jedis);        }    }}

最后总结一下，整合redis的方式有很多，这里采用的是jedis直接连接，看懂并修改代码，实践出结果。