Java：通过资源加载 SSL 密钥库

不久前，我不得不做类似的事情。我有一个证书文件，我必须找到一种方法来加载它并将其用于SSL连接。希望我所做的能帮助你。

首先，我必须创建一个信任管理器：

public class MyX509TrustManager implements X509TrustManager {

    X509TrustManager pkixTrustManager;

    MyX509TrustManager() throws Exception {

        String certFile = "/certificates/MyCertFile.cer";

        Certificate myCert = CertificateFactory.getInstance("X509").generateCertificate(this.getClass().getResourceAsStream(valicertFile));

        KeyStore keyStore = KeyStore.getInstance("JKS");
        keyStore.load(null, "".toCharArray());
        keyStore.setCertificateEntry("myCert", myCert);

        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance("PKIX");
        trustManagerFactory.init(keyStore);

        TrustManager trustManagers[] = trustManagerFactory.getTrustManagers();

        for(TrustManager trustManager : trustManagers) {
            if(trustManager instanceof X509TrustManager) {
                pkixTrustManager = (X509TrustManager) trustManager;
                return;
            }
        }

        throw new Exception("Couldn't initialize");
    }

    public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        pkixTrustManager.checkServerTrusted(chain, authType);
    }

    public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
        pkixTrustManager.checkServerTrusted(chain, authType);
    }

    public X509Certificate[] getAcceptedIssuers() {
        return pkixTrustManager.getAcceptedIssuers();
    }
}

之后，我必须创建一个使用我的信任管理器的套接字工厂：

public class MySSLProtocolSocketFactory implements SecureProtocolSocketFactory {

    private SSLContext sslContext = null;

    public MySSLProtocolSocketFactory() {
        super();
    }

    private static SSLContext createMySSLContext() {
        try {
            MyX509TrustManager myX509TrustManager = new MyX509TrustManager();
            SSLContext context = SSLContext.getInstance("TLS");
            context.init(null, new MyX509TrustManager[] { myX509TrustManager}, null);
            return context;
        }

        catch(Exception e) {
            Log.error(Log.Context.Net, e);
            return null;
        }
    }

    private SSLContext getSSLContext() {
        if(this.sslContext == null) {
            this.sslContext = createMySSLContext();
        }

        return this.sslContext;
    }

    public Socket createSocket(String host, int port, InetAddress clientHost, int clientPort) throws IOException {
        return getSSLContext().getSocketFactory().createSocket(host, port, clientHost, clientPort);
    }

    public Socket createSocket(final String host, final int port, final InetAddress localAddress, final int localPort, final HttpConnectionParams params) throws IOException {
        if(params == null) {
            throw new IllegalArgumentException("Parameters may not be null");
        }

        int timeout = params.getConnectionTimeout();
        SocketFactory socketFactory = getSSLContext().getSocketFactory();

        if(timeout == 0) {
            return socketFactory.createSocket(host, port, localAddress, localPort);
        }

        else {
            Socket socket = socketFactory.createSocket();
            SocketAddress localAddr = new InetSocketAddress(localAddress, localPort);
            SocketAddress remoteAddr = new InetSocketAddress(host, port);
            socket.bind(localAddr);
            socket.connect(remoteAddr, timeout);
            return socket;
        }
    }

    public Socket createSocket(String host, int port) throws IOException {
        return getSSLContext().getSocketFactory().createSocket(host, port);
    }

    public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException {
        return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);
    }

    public boolean equals(Object obj) {
        return ((obj != null) && obj.getClass().equals(MySSLProtocolSocketFactory.class));
    }

    public int hashCode() {
        return MySSLProtocolSocketFactory.class.hashCode();
    }
}

然后我使用该套接字工厂发送我的开机自检：

Protocol.registerProtocol("myhttps", new Protocol("myhttps", new MySSLProtocolSocketFactory(), 443));

PostMethod postMethod = new PostMethod("myhttps://some.url.here");

HttpClient client = new HttpClient();
int status = client.executeMethod(postMethod);

我唯一无法弄清楚的是如何简单地将证书文件添加到常规密钥库。我在研究期间发现的所有示例源代码都指向创建一个套接字因子，然后向该套接字工厂注册协议。也许有一种方法可以简单地使用套接字工厂来建立连接而无需注册协议;我还没有对此进行彻底调查。在我的特殊情况下，创建一个特定的协议是必要的。希望这能让你走得更远。我承认这似乎有点迂回。当我最初这样做时，我也有同样的感觉。但这是我让它工作的唯一方法。也许其他人有更好的解决方案。

为了后代的缘故，所有这些都太复杂了，我们几乎只是在静态块中进行了检查：

if( environment == 'production') {
    System.setProperty("javax.net.ssl.keyStore",                    '/etc/certificates/prod/keystore.ks');
    System.setProperty("javax.net.ssl.keyStorePassword",            'password');
    System.setProperty("sun.security.ssl.allowUnsafeRenegotiation", "true");
} else {
    System.setProperty("javax.net.ssl.keyStore",                    '/etc/certificates/test/keystore.ks');
    System.setProperty("javax.net.ssl.keyStorePassword",            'password');
    System.setProperty("sun.security.ssl.allowUnsafeRenegotiation", "true");
}