使用Java套接字连接到未签名的HTTP网站

Question

我正在尝试设置一个Java程序来连接到我自己使用SSL的网站。我完全为标准HTTP站点工作，但不适用于HTTP。我的问题是我没有签署我的证书。

我该如何让java忽略它没有签名并让我连接的事实？

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source) 
    at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source) 
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) 
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) 
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) 
    at util.Watchlist.getWatchListWebsiteReaderSSL(Watchlist.java:51) 
    at util.Watchlist.updateWLDP(Watchlist.java:64) 
    at util.Watchlist.getWLDP(Watchlist.java:24) 
    at commands.devices.cpt.WldpMessage.run(WldpMessage.java:52) 
    at cli.Parser.Parse(Parser.java:74) 
    at fromUI.UISocketReader.run(UISocketReader.java:54) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at sun.security.validator.PKIXValidator.doBuild(Unknown Source) 
    at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) 
    at sun.security.validator.Validator.validate(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.validate(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) 
    ... 19 more 
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) 
    at java.security.cert.CertPathBuilder.build(Unknown Source) 
    ... 25 more 

Answer 1

你需要创建一个接受未签名的证书和准随的SSLContext用于HTTPS连接的的TrustManager：当我试图连接我得到这个错误。有一个在http://www.exampledepot.com/egs/javax.net.ssl/trustall.html

// Create a trust manager that does not validate certificate chains 
TrustManager[] trustAllCerts = new TrustManager[]{ 
    new X509TrustManager() { 
    public java.security.cert.X509Certificate[] getAcceptedIssuers() { 
     return null; 
    } 
    public void checkClientTrusted(
     java.security.cert.X509Certificate[] certs, String authType) {} 
    public void checkServerTrusted(
     java.security.cert.X509Certificate[] certs, String authType) {} 
    } 
}; 

// Install the all-trusting trust manager 
try { 
    SSLContext sc = SSLContext.getInstance("SSL"); 
    sc.init(null, trustAllCerts, new java.security.SecureRandom()); 
    HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); 
} catch (Exception e) { 
} 

// Now you can access an https URL without having the certificate in the 
// truststore 
try { 
    URL url = new URL("https://hostname/index.html"); 
} catch (MalformedURLException e) { 
} 

一个简单的例子，请注意，链接的例子做任何对服务器的SSL证书没有验证所以你将不能够完全信任你连接到网站的身份。