java对redis的操作

需要两个包的支持

jedis-2.1.0.jar

commons-pool-1.5.4.jar

一个连接池一个工具类

pool代码

public class RedisUtil {
    
    private static String ADDR = "127.0.0.1";
    
    private static int PORT = 6379;
    
    private static String AUTH = "123456789";
    
    private static int MAX_ACTIVE = 1024;
    
    private static int MAX_IDLE = 200;
    
    private static int MAX_WAIT = 10000;
    
    private static int TIMEOUT = 10000;
    
    private static boolean TEST_ON_BORROW = true;
    
    private static JedisPool jedisPool = null;

    static {
        try {
            JedisPoolConfig config = new JedisPoolConfig();
            config.setMaxActive(MAX_ACTIVE);
            config.setMaxIdle(MAX_IDLE);
            config.setMaxWait(MAX_WAIT);
            config.setTestOnBorrow(TEST_ON_BORROW);
            jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT, AUTH);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public synchronized static Jedis getJedis() {
        try {
            if (jedisPool != null) {
                Jedis resource = jedisPool.getResource();
                return resource;
            } else {
                return null;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    
    public static void returnResource(final Jedis jedis) {
        if (jedis != null) {
            jedisPool.returnResource(jedis);
        }
    }
}

工具类的代码

 public void tools() {
        //连接redis服务器
        jedis = new Jedis("127.0.0.1", 6379);
        //权限认证
        jedis.auth("123456789");  
        //-----添加数据----------  
        jedis.set("name","xinxin");//向key-->name中放入了value-->xinxin  
        System.out.println(jedis.get("name"));//执行结果：xinxin  
        
        jedis.append("name", " is my lover"); //拼接
        System.out.println(jedis.get("name")); 
        
        jedis.del("name");  //删除某个键
        System.out.println(jedis.get("name"));
 }

实际上

set就包括插入修改的功能

get查询，一定有结果，应用时应判断查询结果是不是null

del删除