Android SSL握手例外

Question

我一直在開發一個應用程序，它可以解析關於三個網站頁面的信息，然後向用戶顯示解析的信息。自從這個工作以來，我幾個星期以來都沒有遇到任何例外情況。然後，今天當我再次測試解析函數時，我沒有收到任何結果，logcat發出SSLHandshakeException以及一系列系統錯誤。以下錯誤來自logcat：

03-05 17:59:39.834: W/System.err(5525): javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found. 
03-05 17:59:39.834: W/System.err(5525):  at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:374) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:209) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:478) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80) 
03-05 17:59:39.834: W/System.err(5525):  at libcore.net.http.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:165) 
03-05 17:59:39.834: W/System.err(5525):  at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:425) 
03-05 17:59:39.834: W/System.err(5525):  at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:446) 
03-05 17:59:39.839: W/System.err(5525):  at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:410) 
03-05 17:59:39.839: W/System.err(5525):  at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:164) 
03-05 17:59:39.839: W/System.err(5525):  at org.jsoup.helper.HttpConnection.get(HttpConnection.java:153) 
03-05 17:59:39.839: W/System.err(5525):  at com.example.queryApp.QueryActivity.onCreate(QueryActivity.java:50) 
03-05 17:59:39.839: W/System.err(5525):  at android.app.Activity.performCreate(Activity.java:5206) 
03-05 17:59:39.839: W/System.err(5525):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083) 
03-05 17:59:39.839: W/System.err(5525):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064) 
03-05 17:59:39.839: W/System.err(5525):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125) 
03-05 17:59:39.844: W/System.err(5525):  at android.app.ActivityThread.access$600(ActivityThread.java:140) 
03-05 17:59:39.844: W/System.err(5525):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227) 
03-05 17:59:39.844: W/System.err(5525):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-05 17:59:39.844: W/System.err(5525):  at android.os.Looper.loop(Looper.java:137) 
03-05 17:59:39.844: W/System.err(5525):  at android.app.ActivityThread.main(ActivityThread.java:4898) 
03-05 17:59:39.844: W/System.err(5525):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-05 17:59:39.844: W/System.err(5525):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-05 17:59:39.844: W/System.err(5525):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006) 
03-05 17:59:39.849: W/System.err(5525):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773) 
03-05 17:59:39.849: W/System.err(5525):  at dalvik.system.NativeStart.main(Native Method) 
03-05 17:59:39.849: W/System.err(5525): Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found. 
03-05 17:59:39.849: W/System.err(5525):  at org.apache.harmony.xnet.provider.jsse.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:192) 
03-05 17:59:39.854: W/System.err(5525):  at org.apache.harmony.xnet.provider.jsse.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:163) 
03-05 17:59:39.854: W/System.err(5525):  at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:573) 
03-05 17:59:39.854: W/System.err(5525):  at org.apache.harmony.xnet.provider.jsse.NativeCrypto.SSL_do_handshake(Native Method) 
03-05 17:59:39.854: W/System.err(5525):  at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:371) 
03-05 17:59:39.854: W/System.err(5525):  ... 27 more 
03-05 17:59:39.854: W/System.err(5525): Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found. 
03-05 17:59:39.859: W/System.err(5525):  ... 32 more 

以下是我的QueryActivity的部分代碼，它負責解析網頁。我將另一個活動的三個網站的url傳遞給QueryActivity，然後我使用Jsoup連接並獲取解析的html。

public class QueryActivity extends Activity 
{ 
    String fWebsite = getIntent().getStringExtra("fURL"); 
    String sWebsite = getIntent().getStringExtra("sURL"); 
    String tWebsite = getIntent().getStringExtra("tURL"); 
    try{ 
     Document doc1 = Jsoup.connect(fWebsite).timeout(0).get();  
     Document doc2 = Jsoup.connect(sWebsite).timeout(0).get(); 
     Document doc3 = Jsoup.connect(tWebsite).timeout(0).get(); 
     } 
    catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
} 

有人能解釋爲什麼會出現這種情況和對這個問題的任何解決方案，並就我知道我沒有在這個活動（QueryActivity）更改任何代碼？ 謝謝。

Answer 1

如果這個問題在你身邊： 1.檢查你的設備的日期/時間。 2.也許你更改了固件版本或安裝了一些更新。