apns4j 介绍
apns4j 是 Apple Push Notification Service 的 Java 实现！
Maven：
<dependency> <groupId>com.github.teaey</groupId> <artifactId>apns4j</artifactId> <version>1.0.1</version> </dependency>
示例代码：
KeyStoreWraper keyStore = KeyStoreHelper.getKeyStoreWraper("XXXXXXXX.p12", keyStorePasswd);
AppleNotificationServer appleNotificationServer = new AppleNotificationServer(AppleGateway.ENV_DEVELOPMENT, keyStore);
SecurityConnectionFactory connectionFactory = new SecurityConnectionFactory(appleNotificationServer);
SecurityConnection connection = connectionFactory.getSecurityConnection();
NotifyPayload notifyPayload = new NotifyPayload();
//notifyPayload.setAlert("TEST1");
notifyPayload.setBadge(2);
notifyPayload.setSound("default");
notifyPayload.setAlertBody("Pushed By apns4j");
notifyPayload.setAlertActionLocKey("Button Text");
connection.writeAndFlush(devicetokenString, notifyPayload);
connection.close();