APNs

APNs是苹果推送通知服务，在设备与苹果的推送通知服务器会保持常连接状态。当你想发送一个推送通知给某个用户的iPhone上的应用程序时，你可以使用APNs 发送一个推送消息给目标设备上已安装的某个应用程序。

流程

1. 当在iPhone上第一次打开某个应用时，iOS设备会跟APNs Service索要deviceToken,
2. 应用程序将上一步得到的deviceToken发送给后台，后台保存好当前用户的deviceToken
3. 服务端向APNs Service发送消息
4. APNs Service将消息发送给iPhone应用程序

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iOS

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- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken{ NSString *deviceTokenString = [NSString stringWithFormat:@"%@", deviceToken]; NSString *string = [deviceTokenString stringByReplacingOccurrencesOfString:@" " withString:@""]; string = [string stringByReplacingOccurrencesOfString:@"<" withString:@""]; string = [string stringByReplacingOccurrencesOfString:@">" withString:@""]; DLog(@"------------------获取deviceToken--------n%@",string);}

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- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void(^)(UIBackgroundFetchResult))completionHandler{ //在这里对收到的消息进行相应的处理 DLog(@"-------------------iOS7以后，消息推送成功后的回调");}

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java 基于二进制

pom.xml加入maven依赖

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<dependency> <groupId>org.bouncycastle</groupId> <artifactId>bcprov-jdk16</artifactId> <version>1.45</version></dependency><dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.0.1</version></dependency><dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.5</version></dependency><dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-slf4j-impl</artifactId> <scope>runtime</scope></dependency><dependency> <groupId>com.github.fernandospr</groupId> <artifactId>javapns-jdk16</artifactId> <version>2.2.1</version></dependency>

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import javapns.devices.Device;import javapns.devices.implementations.basic.BasicDevice;import javapns.notification.AppleNotificationServerBasicImpl;import javapns.notification.PushNotificationManager;import javapns.notification.PushNotificationPayload;import javapns.notification.PushedNotification;import org.apache.commons.lang.StringUtils;import java.util.ArrayList;import java.util.List;public class ApnsSend { public static void main(String[] args) throws Exception { //生产 Boolean isProduction=true; String deviceToken; String alert;//push的内容 int badge ;//图标小红圈的数值 String sound;////铃音 if (isProduction){//生产 deviceToken = "6541acccc39dc8ebe810fe844286684877ea2844c927acfb931507b52d61d966";//生产 alert = "生产证书推送";//push的内容 badge = 10; sound = "default"; } else {//测试 deviceToken = "e90440a91269e2a409f898f4176460ab693d8799d6f3deab822c20125e9e8286";//生产 alert = "测试证书推送";//push的内容 badge = 10; sound = "default"; } List<String> tokens = new ArrayList<String>(); tokens.add(deviceToken); String certificatePath = "/Users/biostime/Desktop/tuisong/push1.p12"; String certificatePassword = "123456";//此处注意导出的证书密码不能为空因为空密码会报错 boolean sendCount = true; try { PushNotificationPayload payLoad = new PushNotificationPayload(); payLoad.addAlert(alert); // 消息内容 payLoad.addBadge(badge); // iphone应用图标上小红圈上的数值 if (!StringUtils.isBlank(sound)) { payLoad.addSound(sound);//铃音 } PushNotificationManager pushManager = new PushNotificationManager(); //true：表示的是产品发布推送服务 false：表示的是产品测试推送服务 pushManager.initializeConnection(new AppleNotificationServerBasicImpl(certificatePath, certificatePassword, isProduction)); List<PushedNotification> notifications = new ArrayList<PushedNotification>(); // 发送push消息 if (sendCount) { Device device = new BasicDevice(); device.setToken(tokens.get(0)); PushedNotification notification = pushManager.sendNotification(device, payLoad, true); notifications.add(notification); } else { List<Device> device = new ArrayList<Device>(); for (String token : tokens) { device.add(new BasicDevice(token)); } notifications = pushManager.sendNotifications(payLoad, device); } List<PushedNotification> failedNotifications = PushedNotification.findFailedNotifications(notifications); List<PushedNotification> successfulNotifications = PushedNotification.findSuccessfulNotifications(notifications); int failed = failedNotifications.size(); int successful = successfulNotifications.size(); System.out.print("failed:"+failed+"n"+"success:"+successful); pushManager.stopConnection(); } catch (Exception e) { e.printStackTrace(); } }}

不过，以上方法会存在一个问题，你会发现，当你发送的内容大于256字节的时候，会发现推送失败，所以就有了下面的方法

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基于HTTP/2

见git地址

java-http2-APNs

在com.APNs.http2.core.Example文件中

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public static void main (String[] args) throws FileNotFoundException { //p12文件的路径 String certificatePath = "/Users/biostime/Documents/java-http2-APNs/push/src/main/webapp/bcenterProduction.p12"; String deviceToken = "9043c7ca7e92eb7f99969ae87d0205e71097d25153cb347cba91a7609e659311"; InputStream inputStream = new FileInputStream(certificatePath); ApnsConfig config = new ApnsConfig(); config.setName("name1");// 推送服务名称 config.setDevEnv(false);// 是否是开发环境 config.setKeyStore(inputStream);// 证书 config.setPassword("123456");// 证书密码 config.setPoolSize(5);// 线程池大小 config.setTimeout(3000);// TCP连接超时时间 config.setTopic("com.biostime.business.center");// 标题,即证书的bundleID ApnsService service= ApnsServiceManager.createService(config); ErrorDispatcher.getInstance().addListener(new ErrorListener() { @Override public void handle(ErrorModel errorModel) { System.out.print("收到错误监听:" + errorModel); } }); Payload payload = new Payload(); payload.setAlert("通知"); payload.setBadge(1); // iphone应用图标上小红圈上的数值 payload.setSound("default"); payload.addParam("module","person_msg"); payload.addParam("sm","BBSN"); payload.addParam("redirectType","native"); payload.addParam("title","你的交流圈话题"); payload.addParam("url","http://test-01.biostime.us/merchant_h5/topicGroup/html5/topicDetail.html?topicId=164"); PushNotification notification = new PushNotification(); notification.setPayload(payload); notification.setToken(deviceToken); service = ApnsServiceManager.getService(config.getName()); service.sendNotification(notification);// 异步发送// boolean result = service.sendNotificationSynch(notification);// 同步发送 }

用该方法，可大大的增加消息内容的长度。4K大小，基本上够用了。

原文:大专栏  APNs

来源：https://www.cnblogs.com/wangziqiang123/p/11641295.html