常用API之string

public static void main(String[] args) {
        Jedis jedis = new Jedis("127.0.0.1",6379);
        jedis.auth("12345");

        System.out.println("==================增加数据==================");
        System.out.println(jedis.set("key1","value1"));
        System.out.println(jedis.set("key2","value2"));
        System.out.println(jedis.set("key3","value3"));
        System.out.println("删除键key2："+jedis.del("key2"));
        System.out.println("获取键值key2："+jedis.get("key2"));
        System.out.println("修改key1："+jedis.set("key1","value1Changed"));
        System.out.println("获取键值key1："+jedis.get("key1"));
        System.out.println("在key3后面加入值："+jedis.append("key3","End"));
        System.out.println("获取键值key3："+jedis.get("key3"));
        System.out.println("增加多个键值对："+jedis.mset("key01","value01","key02","value02"));
        System.out.println("获取多个键值对："+jedis.mget("key01","key02","key03"));
        System.out.println("获取多个键值对："+jedis.mget("key01","key02","key03","key04"));
        System.out.println("删除多个键值对："+jedis.del("key01","key02","key03"));
        System.out.println("获取多个键值对："+jedis.mget("key01","key02","key03"));

        jedis.flushDB();
        System.out.println("=====================新增键值对防止覆盖原先值=====================");
        System.out.println(jedis.setnx("key1","value1"));
        System.out.println(jedis.setnx("key2","value2"));
        System.out.println(jedis.setnx("key2","value2-new"));
        System.out.println(jedis.get("key1"));
        System.out.println(jedis.get("key2"));

        System.out.println("=====================新增键值对并设置有效时间=====================");
        System.out.println(jedis.setex("key3",2,"value3"));
        System.out.println(jedis.get("key3"));
        try {
            TimeUnit.SECONDS.sleep(3);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(jedis.get("key3"));

        System.out.println("=====================获取原值，更新为新值=====================");
        System.out.println(jedis.getSet("key2","key2GetSet"));
        System.out.println(jedis.get("key2"));

        System.out.println("截取key2的值："+jedis.getrange("key2",2,4));
    }