实际项目应用中，应该考虑使用开源项目java-apns:https://github.com/notnoop/java-apns
千万不要用一个叫JAVAPNS的项目。这个开源项目的代码非常烂，每次发送消息都重新建立socket连接。
在apple的文档中，都明确的说了会把这种行为当作dos攻击行为。性能差就更不用说了。
ios手机上要安装对应的应用。该应用与.p12证书文件应该匹配。
apple官方的，关于APN服务，和apn的feedback的文档在这个地方：https://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/CommunicatingWIthAPS.html#//apple_ref/doc/uid/TP40008194-CH101-SW3
java版本发送apn推送代码示例：
package test;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.security.KeyStore;
import java.util.regex.Pattern;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
public class TestAPN {
/**
* @param args
*/
public static void main(String[] args) {
String keyPath = "/data/tmp/proj.apns.p12";
String ksType = "PKCS12";
String ksPassword = "111111";
String ksAlgorithm = "SunX509";
String deviceToken = "1404c88dbb0adb92c0a85f4cd09be9707f251ae5bbecdb0a6a3e572aeb337d73";
String serverHost = "gateway.push.apple.com";
int serverPort = 2195;
try {
InputStream certInput = new FileInputStream(keyPath);
KeyStore keyStore = KeyStore.getInstance(ksType);
keyStore.load(certInput, ksPassword.toCharArray());
KeyManagerFactory kmf = KeyManagerFactory.getInstance(ksAlgorithm);
kmf.init(keyStore, ksPassword.toCharArray());
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(kmf.getKeyManagers(), null, null);
SSLSocketFactory socketFactory = sslContext.getSocketFactory();
Socket socket = socketFactory.createSocket(serverHost, serverPort);
StringBuilder content = new StringBuilder();
String text = "this is a test.";
content.append("{\"aps\":");
content.append("{\"alert\":\"").append(text)
.append("\",\"badge\":1,\"sound\":\"")
.append("ping1").append("\"}");
content.append(",\"cpn\":{\"t0\":")
.append(System.currentTimeMillis()).append("}");
content.append("}");
byte[] msgByte = makebyte((byte)1, deviceToken, content.toString(), 10000001);
System.out.println(msgByte);
socket.getOutputStream().write(msgByte);
socket.getOutputStream().flush();
socket.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 组装apns规定的字节数组 使用增强型
*
* @param command
* @param deviceToken
* @param payload
* @return
* @throws IOException
*/
private static byte[] makebyte(byte command, String deviceToken, String payload, int identifer) {
byte[] deviceTokenb = decodeHex(deviceToken);
byte[] payloadBytes = null;
ByteArrayOutputStream boas = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(boas);
try {
payloadBytes = payload.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return null;
}
try {
dos.writeByte(command);
dos.writeInt(identifer);//identifer
dos.writeInt(Integer.MAX_VALUE);
dos.writeShort(deviceTokenb.length);
dos.write(deviceTokenb);
dos.writeShort(payloadBytes.length);
dos.write(payloadBytes);
return boas.toByteArray();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
private static final Pattern pattern = Pattern.compile("[ -]");
private static byte[] decodeHex(String deviceToken) {
String hex = pattern.matcher(deviceToken).replaceAll("");
byte[] bts = new byte[hex.length() / 2];
for (int i = 0; i < bts.length; i++) {
bts[i] = (byte) (charval(hex.charAt(2*i)) * 16 + charval(hex.charAt(2*i + 1)));
}
return bts;
}
private static int charval(char a) {
if ('0' <= a && a <= '9')
return (a - '0');
else if ('a' <= a && a <= 'f')
return (a - 'a') + 10;
else if ('A' <= a && a <= 'F')
return (a - 'A') + 10;
else{
throw new RuntimeException("Invalid hex character: " + a);
}
}
}
