代码：    

         https://github.com/viakiba/redis 

package com.viakiba.redis.step3;import org.junit.Test;import redis.clients.jedis.Jedis;public class App9 {	static interface RedisConfig {		public final static String HOST = "127.0.0.1";		public final static int PORT = 6379;	}		/**	 * @description: 测试连接是否通过	 * @author: viakiba	 * @throws Exception	 */	@Test	public void test1() throws Exception {		//连接测试是否通过		Jedis jedis = new Jedis(RedisConfig.HOST,RedisConfig.PORT);		System.out.println(jedis.ping());//pong则通过		jedis.close();	}		/**	 * @description: INCR/INCRBY/INCRBYFLOAT	 * @author: viakiba	 * @throws Exception	 */	@Test	public void test2() throws Exception {		Jedis jedis = new Jedis(RedisConfig.HOST,RedisConfig.PORT);				jedis.flushAll();		jedis.set("k", "10");				System.out.println(jedis.get("k"));		jedis.incr("k");		System.out.println(jedis.get("k"));		jedis.incrBy("k", 5);		System.out.println(jedis.get("k"));		jedis.incrByFloat("k", 10.52);		System.out.println(jedis.get("k"));		jedis.close();	}}