https://www.cnblogs.com/bincoding/p/6164569.html
单个连接:
public class testRedisSingle {
static String constr = "127.0.0.1" ;
public static Jedis getRedis(){
Jedis jedis = new Jedis(constr) ;
jedis.auth("");
return jedis ;
}
public static void main(String[] args){
Jedis j = testRedisSingle.getRedis() ;
String output ;
j.set( "hello", "world" ) ;
output = j.get( "hello") ;
System. out.println(output) ;
}
}
连接池:
public final class testRedisPool {
//Redis服务器IP
private static String ADDR = "127.0.0.1";
//Redis的端口号
private static int PORT = 6379;
//访问密码
private static String AUTH ="";
//可用连接实例的最大数目,默认值为8;
//如果赋值为-1,则表示不限制;如果pool已经分配了maxActive个jedis实例,则此时pool的状态为exhausted(耗尽)。
private static int MAX_ACTIVE = 1024;
//控制一个pool最多有多少个状态为idle(空闲的)的jedis实例,默认值也是8。
private static int MAX_IDLE = 200;
//等待可用连接的最大时间,单位毫秒,默认值为-1,表示永不超时。如果超过等待时间,则直接抛出JedisConnectionException;
private static int MAX_WAIT = 10000;
private static int TIMEOUT = 10000;
//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 boolean TEST_ON_BORROW = true;
private static JedisPool jedisPool = null;
/**
* 初始化Redis连接池
*/
static {
try {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(MAX_ACTIVE);
config.setMaxIdle(MAX_IDLE);
config.setMaxWaitMillis(MAX_WAIT);
config.setTestOnBorrow(TEST_ON_BORROW);
jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT,AUTH);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 获取Jedis实例
* @return
*/
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 lTrim(byte[] key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.ltrim(key,0,-1);
} catch (Exception e) {
//释放redis对象
jedis.close();
e.printStackTrace();
} finally {
//返还到连接池
jedis.close();
}
}
/**
* 存储REDIS队列 顺序存储
* @param key reids键名
* @param value 键值
*/
public static void lPush(byte[] key, byte[] value) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.lpush(key, value);
} catch (Exception e) {
//释放redis对象
jedis.close();
e.printStackTrace();
} finally {
//返还到连接池
jedis.close();
}
}
/**
* 获取队列数据
* @param key 键名
* @return
*/
public static byte[] rPop(byte[] key) {
byte[] bytes = null;
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
bytes = jedis.rpop(key);
} catch (Exception e) {
//释放redis对象
jedis.close();
e.printStackTrace();
} finally {
//返还到连接池
jedis.close();
}
return bytes;
}
public static long lLen(byte[] key) {
long len = 0;
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
len = jedis.llen(key);
} catch (Exception e) {
//释放redis对象
jedis.close();
e.printStackTrace();
} finally {
//返还到连接池
jedis.close();
}
return len;
}