Java 之 Jedis 与jedispool

   1.set  get  setex          2.存储hash       3.list     4.zset      5.set                             JedisPool

1.set  get  setex   

       jedis 构造方法默认不写 就是 本地的

    @Test
    public void test01(){
        Jedis redis = new Jedis("127.0.0.1",6379);
        String set = redis.set("name", "wyc");
        System.out.println(set);                  ok
        System.out.println(redis.get("name"));  wyc 
    }

    setex   设置过期时间

       @Test
    public void test02() throws InterruptedException {
        Jedis redis = new Jedis();
        redis.setex("age",8,"15");         8秒这个键过期
        String ret1 = redis.get("age");  15

        Thread.sleep(10000);    睡10s
        String ret2 = redis.get("age");
        System.out.println(ret2);  null}

2.存储hash 

        @Test
        public void test03() throws InterruptedException {
        Jedis redis = new Jedis();
        redis.hset("user","name","wyc");
        redis.hset("user","age","18");
        redis.hset("user","gender","男");
        String gender = redis.hget("user", "gender");
        System.out.println(gender);  男

        Map users = redis.hgetAll("user");
        System.out.println(users);  {gender=男, name=wyc, age=18}
        
        Set keys = users.keySet();  name ,age, gender
        for (String key : keys) {
            System.out.println(users.get(key));  男   wyc   18
        }

    user :[ "name": "wyc"  ,"age": "18"  ,  "gender":"男"  ]

3.list  

        Jedis redis = new Jedis();
        redis.lpush("list","a","b","c");
        redis.rpush("list","a","b","c");
        List list = redis.lrange("list", 0, -1);  c b a a b c

        String list1 = redis.lpop("list");    c
        String list2 = redis.rpop("list");      c

        System.out.println(redis.lrange("list", 0, -1));   b a a b

4.zset 

         Jedis redis = new Jedis();
        redis.zadd("name",1,"wyc");
        redis.zadd("name",50,"xqy");
        redis.zadd("name",25,"wahaha");
        Set names = redis.zrange("name", 0, -1);
        System.out.println(names);  [wyc, wahaha, xqy]

 5.set  

         public void test05() throws InterruptedException {
        Jedis redis = new Jedis();
        redis.sadd("unique","wyc","xqy","sb","hh");     如果重复返回0

        Set uniqueset = redis.smembers("unique");    [wyc, hh, xqy, sb]
        System.out.println(uniqueset);  

JedisPool

         JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(20);    设置pool的最大连接数
        config.setMaxIdle(5);      最大空闲数
        JedisPool jedisPool = new JedisPool(config,"127.0.0.1",6379);  传入配置
        Jedis redis = jedisPool.getResource();    返回redis客服端

 JedisPoolUtils

    public class JedisPoolUtils {
    private static JedisPool jedisPool;
    
    static {
        InputStream res = JedisPoolUtils.class.getClassLoader().getResourceAsStream("jedis.properties");
        Properties pro = new Properties();

        try {
            pro.load(res);    //加载文件
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        //配置jedispool
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(Integer.parseInt(pro.getProperty("MaxTotal")));
        config.setMaxIdle(Integer.parseInt(pro.getProperty("MaxIdle")));
        
        //初始化jedispool
    jedisPool = new JedisPool(config,pro.getProperty("host"),Integer.parseInt(pro.getProperty("port")));
         
    }
    
    //获取redis 方法
    public static Jedis getJedis(){
        return jedisPool.getResource();
    }}