[Push]百度消息推送的应用

推送技术是指通过客户端与服务器端建立长链接，客户端可以接收由服务器端不定时发送的消息,在客户机/服务器的应用程序中，推送技术能够向客户机传送数据而无需其发出请求，例如发送电子邮件。相比较而言，万维网却是基于拉技术(Pull Technology)，因此客户机浏览器必须事先向网页发出请求，所需信息才能被传送过来。

手机推送服务的原理很简单，就是通过建立一条手机与服务器的连接链路，当有消息需要发送到手机时，通过此链路发送即可

/**  * 初始化百度推送 * @return */public static BaiduPushClient initPushClient(){String apiKey=""; String secretKey=""; //需要去百度云推送平台申请PushKeyPair pair = new PushKeyPair(apiKey, secretKey); //设置两个属性BaiduPushClient pushClient = new BaiduPushClient(pair, BaiduPushConstants.CHANNEL_REST_URL);//实例化BaiduPushClient对象pushClient.setChannelLogHandler(new YunLogHandler() {@Overridepublic void onHandle(YunLogEvent arg0) {System.out.println(arg0.getMessage());}});return pushClient;}/** * 消息推送 * @return */public static int pushOnlyMessage(String content,int pushType,int devType){BaiduPushClient pushClient=initPushClient();    //得到百度推送PushMsgToSingleDeviceRequest request=new PushMsgToSingleDeviceRequest();request.addMsgExpires(new Integer(3600))//消息有效时间request.addDeviceType(devType);  // devType => 1: web 2: pc 3:android 4:ios 5:wprequest.addChannelId(""); // 广播IDrequest.addMessageType(pushType);//request.addMessage(content);try {PushMsgToSingleDeviceResponse response=pushClient.pushMsgToSingleDevice(request);System.out.println("推送成功"+response.getMsgId());} catch (PushClientException e) {e.printStackTrace();} catch (PushServerException e) {e.printStackTrace();}return 0;}

实例代码:

//向安卓移动端推送public String sendAndroidMessage(String messageTitle, String messageContent, String[] channelIds)throws PushClientException,PushServerException {        //1. 创建PushKeyPair用于app的合法身份认证apikey和secretKey可在应用详情中获取PushKeyPair pair = new PushKeyPair(apiKeyForAndorid, secretKeyForAndorid);// 2. 创建BaiduPushClient，访问SDK接口BaiduPushClient pushClient = new BaiduPushClient(pair,BaiduPushConstants.CHANNEL_REST_URL);// 3. 注册YunLogHandler，获取本次请求的交互信息pushClient.setChannelLogHandler(new YunLogHandler() {@Overridepublic void onHandle(YunLogEvent event) {log.debug(event.getMessage());}});try {// 4. 设置请求参数，创建请求实例//创建Android通知JSONObject notification = new JSONObject();notification.put("title", messageTitle);//标题notification.put("description",messageContent);//内容notification.put("notification_builder_id", 0);//客户端自定义通知样式，如果没有设置默认为0notification.put("notification_basic_style", 4);//只有notification_builder_id为0时才有效，才需要设置,notification.put("open_type", 2);//点击通知后的行为(打开Url：1; 自定义行为：2：其它值则默认打开应用;)notification.put("pkg_content", "#Intent;launchFlags=0x10000000;"      + "component=com.gasj.cp/.ui.MessageInfoActivity;"      + "S.descrip="+messageContent+";"      + "B.ispush=true;S.title="+messageTitle+";end");PushBatchUniMsgRequest request = new PushBatchUniMsgRequest().addChannelIds(channelIds)//频道.addMsgExpires(new Integer(3600))//设置消息的有效时间,单位秒,默认3600*5..addMessageType(1)//通知类型 0 透传，1通知.addMessage(notification.toString()).addDeviceType(3)//客户端类型 3，安卓 4 ios.addTopicId("BaiduPush");// 设置类别主题        // 5. 执行Http请求PushBatchUniMsgResponse response = pushClient.pushBatchUniMsg(request); // 6. Http请求返回值解析log.info(String.format("msgId: %s, sendTime: %d",response.getMsgId(), response.getSendTime()));result="已发送";} catch (PushClientException e) {log.error(e.getMessage());result="发送失败";} catch (PushServerException e) {log.error(String.format("requestId: %d, errorCode: %d, errorMessage: %s",e.getRequestId(), e.getErrorCode(), e.getErrorMsg()));result="发送失败";}return result;}