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import redis.clients.jedis.Jedis;

import redis.clients.jedis.JedisPubSub;

/**

* author: LongDuping

* date : 2017-07-27 11:36

* email : 610215675@qq.com

* --------------------------------------------------

* function: 推送客户端

*/

public class PushClient {

// Redis服务器地址

private String host = null;

// Redis服务端口

private int port = 6379;

// Redis连接密码，如果没有则设为null

private String pass = null;

// 监听的频道 默认为“push”

private String channel = null;

// 消息到达后处理接口，由使用者自己实现

private OnPushMessageListener onPushMessageListener;

// 监听线程

private Thread pushLisenter = null;

public PushClient(OnPushMessageListener onPushMessageListener) {

this.onPushMessageListener = onPushMessageListener;

}

public PushClient setAddress(String host, int port) {

this.host = host;

this.port = port;

return this;

}

public PushClient setAddress(String host) {

this.host = host;

return this;

}

public PushClient setPass(String pass) {

this.pass = pass;

return this;

}

public PushClient setChannel(String channel) {

this.channel = channel;

return this;

}

/**

* 开始监听

*

* @return

*/

public PushClient listen() {

if (host == null) {

throw new RuntimeException("你必须指定host!");

}

if (onPushMessageListener == null) {

throw new RuntimeException("你必须实现处理接口onPushMessageListener，不然意义在哪里？");

}

if (channel == null){

throw new RuntimeException("你必须指定订阅的频道channel!");

}

if (pushLisenter != null) {

return this;

}

pushLisenter = new Thread(new Runnable() {

@Override

public void run() {

Jedis jedis = new Jedis(host, port);

if (pass != null && !"".equals(pass)) {

jedis.auth(pass);

}

System.out.println("PushClient:to start listen '" + channel + "' | " + host + ":" + port);

jedis.subscribe(new JedisPubSub() {

@Override

public void onMessage(String channel, String message) {

onPushMessageListener.onMesssage(message);

}

}, channel);

jedis.close();

}

});

pushLisenter.start();

return this;

}

/**

* 停止监听

*/

public void stop() {

try {

pushLisenter.stop();

pushLisenter = null;

} catch (Exception e) {

e.printStackTrace();

}

}

/**

* 推送消息处理接口

*/

public interface OnPushMessageListener {

/**

* 消息到达

*

* @param message 消息

*/

void onMesssage(String message);

}

}