redis.clients.jedis.Jedis#get

Source File: JedisUtil.java From newblog with Apache License 2.0

6 votes

public String get(String key) {
    Jedis jedis = null;
    String result = "";
    try {
        jedis = getJedis();
        if (jedis != null) {
            result = jedis.get(key);
        } else {
            logger.error("get opt connection null error!");
        }
    } catch (JedisConnectionException e) {
        if (jedis != null) {
            jedis.close();
            jedis = null;
        }
        logger.error("get value connect error:", e);
    } finally {
        returnJedisResource(jedis);
    }
    return result;
}

Source File: HandlerImpl.java From tephra with MIT License

6 votes

private <T> T get(String key, boolean remove) {
    Jedis jedis = pool.getResource();
    byte[] k = key.getBytes();
    byte[] bytes = jedis.get(k);
    if (validator.isEmpty(bytes)) {
        jedis.close();

        return null;
    }

    if (remove)
        jedis.del(k);
    T t = unserialize(jedis, k, bytes);
    jedis.close();

    return t;
}

Source File: RedisPoolUtilBAK.java From mmall20180107 with Apache License 2.0

6 votes

public static String get(String key){

        Jedis jedis = null;
        String result = null;

        try {
            jedis = RedisPool.getJedis();
            result = jedis.get(key);
        } catch (Exception e) {
            log.error("get key:{}  error",key,e);
            RedisPool.returnBrokenResource(jedis);
            e.printStackTrace();
        }


        RedisPool.returnResource(jedis);

        return result;

    }

Source File: GetSetBenchmark.java From cachecloud with Apache License 2.0

6 votes

public static void main(String[] args) throws UnknownHostException, IOException {
  Jedis jedis = new Jedis(hnp.getHost(), hnp.getPort());
  jedis.connect();
  jedis.auth("foobared");
  jedis.flushAll();

  long begin = Calendar.getInstance().getTimeInMillis();

  for (int n = 0; n <= TOTAL_OPERATIONS; n++) {
    String key = "foo" + n;
    jedis.set(key, "bar" + n);
    jedis.get(key);
  }

  long elapsed = Calendar.getInstance().getTimeInMillis() - begin;

  jedis.disconnect();

  System.out.println(((1000 * 2 * TOTAL_OPERATIONS) / elapsed) + " ops");
}

Source File: RedisSinkBolt.java From jstorm with Apache License 2.0

6 votes

private byte[] retryGet(byte[] key) {
    int retry = 0;
    byte[] ret;
    while (true) {
        Jedis jedis = null;
        try {
            jedis = pool.getResource();
            ret = jedis.get(key);
            return ret;
        } catch (JedisConnectionException e) {
            if (jedis != null) {
                pool.returnBrokenResource(jedis);
                jedis = null;
            }
            if (retry > retryLimit) {
                throw e;
            }
            retry++;
        } finally {
            if (jedis != null) {
                pool.returnResource(jedis);
            }
        }
    }
}

Source File: RedisClient.java From flycache with Apache License 2.0

5 votes

/**
 * <p>
 * 通过key获取储存在redis中的value
 * </p>
 * <p>
 * 并释放连接
 * </p>
 *
 * @param key
 * @return 成功返回value 失败返回null
 */
public String get(String key) {
    Jedis jedis = null;
    String value = null;
    try {
        jedis = jedisPool.getResource();
        value = jedis.get(key);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        closeJedis(jedis);
    }
    return value;
}

Source File: M2H.java From BigData with GNU General Public License v3.0

5 votes

public static void main(String[] args) throws SQLException, URISyntaxException, IOException {
	fileSystem = getInstance();
	// 从mysql中读取更新的数据，返回ResultSet
	Jedis jedis = new Jedis("192.168.1.107", 6379);
	String num = jedis.get("mark");
	jedis.close();
	int count = 0;
	if (num != null) {
		count = Integer.parseInt(num);
	}
	String sql = "select * from test1 limit ?,99999999";

	// 处理mysql to hdfs
	queryRS(sql, count);
}

Source File: JedisDemo.java From JavaTutorial with Apache License 2.0

5 votes

/**
 * 单机单连接方式。
 */
private static void single() {
    Jedis client = new Jedis("192.168.56.102", 6379);
    String result = client.set("key-string", "Hello, Redis!");
    System.out.println( String.format("set指令执行结果:%s", result) );
    String value = client.get("key-string");
    System.out.println( String.format("get指令执行结果:%s", value) );
}

Source File: JedisClient.java From belling-redis-id-generator with Apache License 2.0

5 votes

/**
 * @Description 
 * 
 * @author butterfly
 * @param key
 * @return
 * @throws Exception
 */
public String get(String key) throws Exception {
	Jedis jedis = null;
	try {
		jedis = jedisPool.getResource();
		return jedis.get(key);
	} catch (Exception ex) {
		throw ex;
	} finally {
		// 返还到连接池
		if (null != jedis)
			jedis.close();
	}
}

Source File: RedisManager.java From jee-universal-bms with Apache License 2.0

5 votes

/**
 * 通过key获取储存在redis中的value
 * 并释放连接
 * @param key
 * @return 成功返回value 失败返回null
 */
public String get(String key) {
    Jedis jedis = null;
    String value = null;
    try {
        jedis = pool.getResource();
        value = jedis.get(key);
    } catch (Exception e) {
        pool.returnBrokenResource(jedis);
        e.printStackTrace();
    } finally {
        returnResource(pool, jedis);
    }
    return value;
}

Source File: CommonCache.java From MicroCommunity with Apache License 2.0

5 votes

/**
 * 获取值(用户ID)
 *
 * @returne
 */
public static String getAndRemoveValue(String key) {
    Jedis redis = null;
    String value = "";
    try {
        redis = getJedis();
        value = redis.get(key);
        removeValue(key);
    } finally {
        if (redis != null) {
            redis.close();
        }
    }
    return value;
}

Source File: RedisPoolUtil.java From redis-distributed-lock with Apache License 2.0

5 votes

public static String get(String key){
    Jedis jedis = null;
    String result = null;
    try {
        jedis = RedisPool.getJedis();
        result = jedis.get(key);
    } catch (Exception e){
        e.printStackTrace();
    } finally {
        if (jedis != null) {
            jedis.close();
        }
        return result;
    }
}

Source File: RedisStore.java From datacollector with Apache License 2.0

5 votes

public LookupValue get(Pair<String, DataType> pair) {
  Jedis jedis = pool.getResource();
  LookupValue values;

  // check the type
  DataType type = pair.getRight();
  String key = pair.getLeft();
  switch (type) {
    case STRING:
      values = new LookupValue(jedis.get(key), type);
      break;
    case LIST:
      values = new LookupValue(jedis.lrange(key, 0, jedis.llen(key)), type);
      break;
    case HASH:
      values = new LookupValue(jedis.hgetAll(key), type);
      break;
    case SET:
      values = new LookupValue(jedis.smembers(key), type);
      break;
    default:
      values = null;
  }
  jedis.close();

  return values;
}

Source File: JedisCacheService.java From springbootexamples with Apache License 2.0

5 votes

/**
 * 获取缓存中的对象
 * @param key
 * @return
 */
public Object getObject(String key) {
    Jedis jedis = null;
    Object object = null;
    try {
        jedis = jedisPool.getResource();
        byte[] ObjectByteArray = jedis.get(key.getBytes());
        object = unserialize(ObjectByteArray);
    }catch (Exception e){
        e.printStackTrace();
    }finally {
        close(jedis);
    }
    return object;
}

Source File: JWTCache.java From MicroCommunity with Apache License 2.0

5 votes

/**
 * 获取值(用户ID)
 * @returne
 */
public static String getValue(String jdi){
    Jedis redis = null;
    try {
        redis = getJedis();
        return redis.get(jdi);
    }finally {
        if(redis != null){
            redis.close();
        }
    }
}

Source File: JedisTest.java From cachecloud with Apache License 2.0

5 votes

@Test
public void connectWithShardInfo() {
  JedisShardInfo shardInfo = new JedisShardInfo("localhost", Protocol.DEFAULT_PORT);
  shardInfo.setPassword("foobared");
  Jedis jedis = new Jedis(shardInfo);
  jedis.get("foo");
}

Source File: UrlUtil.java From BigData with GNU General Public License v3.0

5 votes

public static void juageUrl(String userHref) {
	// 用户url去重
	String md5 = MD5Filter.md5(userHref);
	Jedis jedis = JedisUtil.getJedis();
	if (jedis.get(md5) == null) {
		jedis.append(md5, "md5url");
		jedis.lpush(JedisUtil.urlkey, userHref);
		JedisUtil.returnResource(jedis);
	} else {
		JedisUtil.returnResource(jedis);
	}
}

Source File: WxQrcodePay.java From pay-spring-boot with GNU General Public License v3.0

4 votes

/**
 * 预支付
 * @param trade
 * @return
 * @throws DocumentException
 */
private String prepay(WxTrade trade) throws DocumentException {
    Jedis redis = null;
    try{
        redis = CommonConfig.getJedisPool().getResource();
        String codeUrlKey = "pay:wx:out_trade_no:".concat(trade.getOutTradeNo()).concat(":code_url");

        /**
         * 从缓存中寻找二维码链接
         */
        String reply = redis.get(codeUrlKey);
        if(StringUtils.isNotBlank(reply)){
            return reply;
        }

        /**
         * 远程请求二维码链接
         */
        log.info("[微信支付]开始预支付");

        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", trade.getAppid());
        params.put("mch_id", trade.getMchid());
        params.put("nonce_str", trade.getNonceStr());
        params.put("body", trade.getBody());
        params.put("detail", trade.getDetail());
        params.put("out_trade_no", trade.getOutTradeNo());
        params.put("total_fee", trade.getTotalFee());
        params.put("spbill_create_ip", trade.getSpbillCreateIp());
        params.put("notify_url", trade.getNotifyUrl());
        params.put("trade_type", trade.getTradeType());
        params.put("product_id", trade.getProductId());
        params.put("sign", signMD5(params));

        log.info("[微信支付]预支付参数构造完成\n" + JSON.toJSONString(params));

        Document paramsDoc = buildDocFromMap(params);

        log.info("[微信支付]预支付XML参数构造完成\n" + paramsDoc.asXML());

        log.info("[微信支付]开始请求微信服务器进行预支付");

        SimpleResponse response = HttpClient.getClient().post(WxPayConfig.getUnifiedorderURL(), paramsDoc.asXML());
        if(response.getCode() != 200){
            throw new RuntimeException("请求预支付通信失败, HTTP STATUS[" + response.getCode() + "]");
        }
        String responseBody = response.getStringBody();

        log.info("[微信支付]预支付通信成功\n" + responseBody);

        /**
         * 解析响应数据
         */
        Document responseDoc = DocumentHelper.parseText(responseBody);
        Element codeUrlElement = responseDoc.getRootElement().element("code_url");
        if(codeUrlElement == null){
            throw new RuntimeException("请求预支付未找到二维码链接(code_url)");
        }
        String codeUrl = codeUrlElement.getTextTrim();

        log.info("[微信支付]成功获取二维码链接[" + codeUrl + "]");

        /**
         * 缓存二维码链接
         */
        redis.set(codeUrlKey, codeUrl);
        redis.expire(codeUrlKey, 7170);

        return codeUrl;
    }finally{
        if(redis != null){
            redis.close();
            redis = null;
        }
    }
}

Source File: WxMobilePay.java From pay-spring-boot with GNU General Public License v3.0

4 votes

/**
 * 预支付
 * @param trade
 * @return
 * @throws DocumentException
 */
private String prepay(WxTrade trade) throws DocumentException {
    Jedis redis = null;
    try{
        redis = CommonConfig.getJedisPool().getResource();
        String prepayidKey = "pay:wx:out_trade_no:".concat(trade.getOutTradeNo()).concat(":prepay_id");

        /**
         * 从缓存中寻找预支付id
         */
        String reply = redis.get(prepayidKey);
        if(StringUtils.isNotBlank(reply)){
            return reply;
        }

        /**
         * 远程请求预支付id
         */
        log.info("[微信支付]开始预支付");

        Map<String, String> params = new HashMap<String, String>();
        params.put("appid", trade.getAppid());
        params.put("mch_id", trade.getMchid());
        params.put("nonce_str", trade.getNonceStr());
        params.put("body", trade.getBody());
        params.put("detail", trade.getDetail());
        params.put("out_trade_no", trade.getOutTradeNo());
        params.put("total_fee", trade.getTotalFee());
        params.put("spbill_create_ip", trade.getSpbillCreateIp());
        params.put("notify_url", trade.getNotifyUrl());
        params.put("trade_type", trade.getTradeType());
        params.put("sign", signMD5(params));

        log.info("[微信支付]预支付参数构造完成\n" + JSON.toJSONString(params));

        Document paramsDoc = buildDocFromMap(params);

        log.info("[微信支付]预支付XML参数构造完成\n" + paramsDoc.asXML());

        log.info("[微信支付]开始请求微信服务器进行预支付");

        SimpleResponse response = HttpClient.getClient().post(WxPayConfig.getUnifiedorderURL(), paramsDoc.asXML());
        if(response.getCode() != 200){
            throw new RuntimeException("请求预支付通信失败, HTTP STATUS[" + response.getCode() + "]");
        }
        String responseBody = response.getStringBody();

        log.info("[微信支付]预支付通信成功\n" + responseBody);

        /**
         * 解析响应数据
         */
        Document responseDoc = DocumentHelper.parseText(responseBody);
        Element prepayIdElement = responseDoc.getRootElement().element("prepay_id");
        if(prepayIdElement == null){
            throw new RuntimeException("请求预支付未找到预支付id(prepay_id)");
        }
        String prepayid = prepayIdElement.getTextTrim();

        log.info("[微信支付]成功获取预支付id[" + prepayid + "]");

        /**
         * 缓存预支付id
         */
        redis.set(prepayidKey, prepayid);
        redis.expire(prepayidKey, 7170);

        return prepayid;
    }finally{
        if(redis != null){
            redis.close();
            redis = null;
        }
    }
}

Source File: SeckillServiceImpl.java From jseckill with Apache License 2.0

4 votes

/**
 * @param seckillId
 * @param userPhone
 * @param md5
 * @return
 * @throws SeckillException
 * @TODO 先在redis里处理，然后发送到mq，最后减库存到数据库
 */
private SeckillExecution handleSeckillAsync(long seckillId, long userPhone, String md5)
        throws SeckillException {
    if (md5 == null || !md5.equals(getMD5(seckillId))) {
        logger.info("seckill_DATA_REWRITE!!!. seckillId={},userPhone={}", seckillId, userPhone);
        throw new SeckillException(SeckillStateEnum.DATA_REWRITE);
    }

    Jedis jedis = jedisPool.getResource();
    String inventoryKey = RedisKeyPrefix.SECKILL_INVENTORY + seckillId;
    if (jedis.sismember(RedisKey.SECKILLED_USER, String.valueOf(userPhone))) {
        //重复秒杀
        logger.info("seckill REPEATED. seckillId={},userPhone={}", seckillId, userPhone);
        throw new SeckillException(SeckillStateEnum.REPEAT_KILL);
    } else {
        String inventoryStr = jedis.get(inventoryKey);
        int inventory = Integer.valueOf(inventoryStr);
        if (inventory <= 0) {
            throw new SeckillException(SeckillStateEnum.SOLD_OUT);
        }
        jedis.watch(inventoryKey);
        Transaction tx = jedis.multi();
        tx.decr(inventoryKey);
        tx.sadd(RedisKey.SECKILLED_USER, String.valueOf(userPhone));
        List<Object> resultList = tx.exec();
        jedis.unwatch();
        if (resultList != null && resultList.size() == 2) {
            // 秒杀成功，后面异步更新到数据库中
            // 发送消息到消息队列
            SeckillMsgBody msgBody = new SeckillMsgBody();
            msgBody.setSeckillId(seckillId);
            msgBody.setUserPhone(userPhone);
            mqProducer.send(JSON.toJSONString(msgBody));

            // 立即返回给客户端，说明秒杀成功了
            SuccessKilled successKilled = new SuccessKilled();
            successKilled.setUserPhone(userPhone);
            successKilled.setSeckillId(seckillId);
            successKilled.setState(SeckillStateEnum.SUCCESS.getState());
            return new SeckillExecution(seckillId, SeckillStateEnum.SUCCESS, successKilled);
        } else {
            throw new SeckillException(SeckillStateEnum.RUSH_FAILED);
        }
    }
}

Java Code Examples for redis.clients.jedis.Jedis#get()