Question

您好我正在尝试使用Java向我的设备发送推送消息。但是我在建立ssl连接时已经遇到了问题。这是迄今为止的代码：

        KeyStore keyStore = KeyStore.getInstance("PKCS12");

        InputStream key = getClass().getResourceAsStream("apns-dev-key.p12");
        char[] c = key.toString().toCharArray();

        keyStore.load(getClass().getResourceAsStream("apns-dev-cert.p12"), c);
        KeyManagerFactory keyMgrFactory = KeyManagerFactory.getInstance("SunX509");
        keyMgrFactory.init(keyStore, c);

        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(keyMgrFactory.getKeyManagers(), null, null);
        SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

        SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(host, port);
        String[] cipherSuites = sslSocket.getSupportedCipherSuites();
        sslSocket.setEnabledCipherSuites(cipherSuites);
        sslSocket.startHandshake();

我得到的错误是：

java.io.IOException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded

我猜apns-dev-key.p12文件存在一些问题。任何提示？

上述代码取自：http://undermypalapa.wordpress.com/2009/08/23/apple-push-notification-service-java/

Answer 1

这是我的工作示例：

private String token = "<token>";
private String host = "gateway.sandbox.push.apple.com";
private int port = 2195;

private String payload = "{\"aps\":{\"alert\":\"Message from Java o_O\"}}";

public APNSender() {
    try {
        KeyStore keyStore = KeyStore.getInstance("PKCS12");

        keyStore.load(getClass().getResourceAsStream("cert.p12"), "<password>".toCharArray());
        KeyManagerFactory keyMgrFactory = KeyManagerFactory.getInstance("SunX509");
        keyMgrFactory.init(keyStore, "<password>".toCharArray());

        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(keyMgrFactory.getKeyManagers(), null, null);
        SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

        SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket(host, port);
        String[] cipherSuites = sslSocket.getSupportedCipherSuites();
        sslSocket.setEnabledCipherSuites(cipherSuites);
        sslSocket.startHandshake();

        char[] t = token.toCharArray();
        byte[] b = Hex.decodeHex(t);

        OutputStream outputstream = sslSocket.getOutputStream();

        outputstream.write(0);
        outputstream.write(0);
        outputstream.write(32);
        outputstream.write(b);
        outputstream.write(0);
        outputstream.write(payload.length());
        outputstream.write(payload.getBytes());

        outputstream.flush();
        outputstream.close();

    } catch (Exception exception) {
        exception.printStackTrace();
    }
}

我仍然很好奇的是如何接收错误代码。我用

试了一下

InputStream in = sslSocket.getInputStream(); 
[...]

但没有成功。

Apple docs表示没有错误发送时没有回复，但另一方面他们列出了“没遇到错误”的状态代码。

Answer 2

您可能需要查看http://code.google.com/p/javapns/。如果你真的需要重新发明轮子而不是直接使用JavaPNS而不是为此编写自己的代码，那么至少JavaPNS的文档应该可以帮助你理解你需要知道的关键原则。

通过Java与Apple Push Notification Server进行SSL握手

2 个答案: