Jedis操作Redis模型

对于外部程序,想要访问Redis首先需要对Redis进行两个设置
在Redis配置文件redis.conf中配置如下

1. 注释掉bang 127.0.0.1，否则只能本机访问 2. 关闭redis的保护模式

不推荐使用new jedis这样的操作,因为操作一次都要对redis进行远程访问,会大量的消耗资源
推荐使用连接池,其中有三个非常重要的类

JedisPoolConfig：设置和读取配置文件JedisPool：Jedis连接池Jedis：Jedis操作对象

首先先来一个new jedis的栗子

package jedisdemo;import redis.clients.jedis.Jedis;/** * Jedis 操作 Redis */public class JedisTest {    private static Jedis jedis;    public static void main(String[] args) {        jedis = new Jedis("192.168.242.161", 6379);        jedis.set("name", "zhangsan");        String value = jedis.get("name");        System.out.println("name = " + value);    }}

Console输出name = zhangsan

下面是使用连接池的栗子

package jedisdemo;import static org.junit.Assert.*;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Set;import org.junit.After;import org.junit.Before;import org.junit.Test;import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisPool;import redis.clients.jedis.JedisPoolConfig;/** * Jedis 操作 Redis（使用连接池） */public class JedisPoolTest {    private static int MAX_TOTAL = 20; // 最大连接数，默认为8，-1表示不限制    private static int MAX_IDLE = 10; // 最大空闲连接数，默认为8    private static int MIN_IDLE = 5; // 初始化连接数    private static int MAX_WAIT = 10000; // 最大等待时间，单位为毫秒，默认-1，永不超时，如果超时，抛出异常 JedisConnectionException    private static boolean TEST_ON_BORROW = true; // 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；    private static String HOST = "192.168.242.161"; // IP    private static int PORT = 6379; // 端口，默认6379    private static String AUTH = "admin"; // redis 密码    private static int TIMEOUT = 1000; // 超时时间    private static Jedis jedis = null;    private JedisPool jedisPool = null;    @Before    public void init() throws Exception {        JedisPoolConfig poolConfig = new JedisPoolConfig();        poolConfig.setMaxTotal(MAX_TOTAL);        poolConfig.setMaxIdle(MAX_IDLE);        poolConfig.setMinIdle(MIN_IDLE);        poolConfig.setMaxWaitMillis(MAX_WAIT);        poolConfig.setTestOnBorrow(TEST_ON_BORROW);        // 如果有密码，需要设置        // JedisPool jedisPool = new JedisPool(poolConfig, HOST, PORT, TIMEOUT, AUTH);        jedisPool  = new JedisPool(poolConfig, HOST, PORT);        jedis = jedisPool .getResource();    }    // Redis String 字符串    @Test    public void testString() throws Exception {        // set get        jedis.set("address", "HeBei");        System.out.println("address = " + jedis.get("address"));        // append        jedis.append("address", " tangsan");        System.out.println("address = " + jedis.get("address"));        // del        jedis.del("address");        System.out.println("address = " + jedis.get("address"));    }    // Redis List 列表    @Test    public void testList() throws Exception {        // lpush lrange         jedis.lpush("dblist", "mysql", "oracle", "db2");         System.out.println("dblist = " + jedis.lrange("dblist", 0, -1));        // rpush lrange        jedis.rpush("dblist", "mongodb", "redis");        System.out.println("dblist = " + jedis.lrange("dblist", 0, -1));        // lpop lrange        jedis.lpop("dblist");        System.out.println("dblist = " + jedis.lrange("dblist", 0, -1));        // llen        System.out.println(jedis.llen("dblist"));    }    // Redis Set 无序集合    @Test    public void testSet() throws Exception {        // sadd smembers        jedis.sadd("myset", "peach", "pear", "banana");        System.out.println("myset = " + jedis.smembers("myset"));        // srem smembers        jedis.srem("myset", "banana");        System.out.println("myset = " + jedis.smembers("myset"));        // scard        System.out.println(jedis.scard("myset"));    }    // Redis Hash 哈希    @Test    public void testHash() throws Exception {        // hset        Map<String, String> hash = new HashMap<String, String>();        hash.put("name", "tom");        hash.put("age", "20");        hash.put("address", "ShangHai");        jedis.hmset("user", hash);        // hdel        jedis.hdel("user", "address");        // hexists        System.out.println(jedis.hexists("user", "address"));        // hkeys         Set<String> hkeys = jedis.hkeys("user");        for (String str : hkeys) {            System.out.println(str);        }        // hvals        List<String> hvals = jedis.hvals("user");        for (String str : hvals) {            System.out.println(str);        }        // hgetall        Map<String, String> map = jedis.hgetAll("user");        for(Map.Entry<String, String> entry : map.entrySet()) {            System.out.println(entry.getKey() + " = " + entry.getValue());        }    }    // Redis ZSet 有序集合    @Test    public void testZSet() throws Exception {        // zadd zrange        Map<String, Double> scoreMembers = new HashMap<String, Double>();        scoreMembers.put("math", 90.0);        scoreMembers.put("english", 87.5);        scoreMembers.put("sports", 94.0);        scoreMembers.put("music", 67.0);        scoreMembers.put("politics", 97.0);        jedis.zadd("score_set", scoreMembers);        System.out.println(jedis.zrange("score_set", 0, -1));        System.out.println(jedis.zrangeWithScores("score_set", 0, -1));        // zrem         jedis.zrem("score_set", "sports");        System.out.println(jedis.zrange("score_set", 0, -1));        // zcard        System.out.println(jedis.zcard("score_set"));        // zrank        System.out.println(jedis.zrank("score_set", "math"));    }    // Java对象存储到Redis（使用序列化）    @Test    public void testSerialize() throws Exception {        User user = new User(1, "张三", "河北");        jedis.set("user".getBytes(), SerializeUtil.serialize(user));    }    // Redis 反序列化后转为Java对象    @Test    public void testDeSerialize() throws Exception {        byte[] bytes = jedis.get("user".getBytes());        System.out.println((User)SerializeUtil.deSerialize(bytes));    }    // 释放资源    @After    public void destory() throws Exception {        if (jedis != null) {            jedis.close();        }    }}

序列化和反序列化工具类

package jedistest;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;public class SerializeUtil {    /**     * 序列化对象     */    public static byte[] serialize(Object obj) {        byte[] bytes = null;        try {            ByteArrayOutputStream baos = new ByteArrayOutputStream();            ;            ObjectOutputStream oos = new ObjectOutputStream(baos);            oos.writeObject(obj);            bytes = baos.toByteArray();            baos.close();            oos.close();        } catch (IOException e) {            e.printStackTrace();        }        return bytes;    }    /**     * 反序列化对象     */    public static Object deSerialize(byte[] bytes) {        Object obj = null;        try {            ByteArrayInputStream bais = new ByteArrayInputStream(bytes);            ObjectInputStream ois = new ObjectInputStream(bais);            obj = ois.readObject();        } catch (Exception e) {            e.printStackTrace();        }        return obj;    }}