IOException異常：無法初始化SSL上下文 - 阿帕奇百科全書網 - 安卓

我試圖用阿帕奇FTPSClient連接到FTP，但我不斷收到此錯誤：IOException異常：無法初始化SSL上下文 - 阿帕奇百科全書網 - 安卓

九月六日至15日：15：14.749：W/System.err（29451）：java.io.IOException：無法初始化SSL上下文

這發生在下面的代碼中，錯誤出現在第二行（連接）。

ftpsClient = new FTPSClient("SSL"); 
ftpsClient.connect(host); 
int reply = ftpsClient.getReplyCode(); 
if(!FTPReply.isPositiveCompletion(reply)) { 
    ftpsClient.disconnect(); 
} 
ftpsClient.login(user, password + nl); 
ftpsClient.setFileType(FTP.BINARY_FILE_TYPE); 
ftpsClient.enterLocalPassiveMode();

任何關於我可能會做錯的建議？

編輯：

全堆棧跟蹤

06-15 09:15:14.749: W/System.err(29451): java.io.IOException: Could not initialize SSL context 
06-15 09:15:14.749: W/System.err(29451): at org.apache.commons.net.ftp.FTPSClient.initSslContext(FTPSClient.java:228) 
06-15 09:15:14.749: W/System.err(29451): at org.apache.commons.net.ftp.FTPSClient.sslNegotiation(FTPSClient.java:246) 
06-15 09:15:14.749: W/System.err(29451): at org.apache.commons.net.ftp.FTPSClient._connectAction_(FTPSClient.java:197) 
06-15 09:15:14.757: W/System.err(29451): at org.apache.commons.net.SocketClient.connect(SocketClient.java:164) 
06-15 09:15:14.757: W/System.err(29451): at org.apache.commons.net.SocketClient.connect(SocketClient.java:184) 
06-15 09:15:14.757: W/System.err(29451): at org.apache.commons.net.SocketClient.connect(SocketClient.java:273) 
06-15 09:15:14.757: W/System.err(29451): at com.test.FTPClient$getFileListTask.doWhat(FTPClient.java:546) 
06-15 09:15:14.757: W/System.err(29451): at com.test.FTPClient$getFileListTask.doInBackground(FTPClient.java:201) 
06-15 09:15:14.757: W/System.err(29451): at com.test.FTPClient$getFileListTask.doInBackground(FTPClient.java:1) 
06-15 09:15:14.757: W/System.err(29451): at android.os.AsyncTask$2.call(AsyncTask.java:264) 
06-15 09:15:14.757: W/System.err(29451): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 
06-15 09:15:14.765: W/System.err(29451): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
06-15 09:15:14.765: W/System.err(29451): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
06-15 09:15:14.765: W/System.err(29451): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
06-15 09:15:14.765: W/System.err(29451): at java.lang.Thread.run(Thread.java:856) 
06-15 09:15:14.765: W/System.err(29451): Caused by: java.security.KeyManagementException: No X509KeyManager found 
06-15 09:15:14.765: W/System.err(29451): at org.apache.harmony.xnet.provider.jsse.SSLParametersImpl.<init>(SSLParametersImpl.java:116) 
06-15 09:15:14.765: W/System.err(29451): at org.apache.harmony.xnet.provider.jsse.SSLContextImpl.engineInit(SSLContextImpl.java:92) 
06-15 09:15:14.765: W/System.err(29451): at javax.net.ssl.SSLContext.init(SSLContext.java:219) 
06-15 09:15:14.765: W/System.err(29451): at org.apache.commons.net.ftp.FTPSClient.initSslContext(FTPSClient.java:226) 
06-15 09:15:14.765: W/System.err(29451): ... 14 more

EDIT2：異常帶的KeyManager

06-15 10:45:14.886: W/System.err(32467): javax.net.ssl.SSLException: Connection closed by peer 
06-15 10:45:14.886: W/System.err(32467): at org.apache.harmony.xnet.provider.jsse.NativeCrypto.SSL_do_handshake(Native Method) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:410) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:257) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.commons.net.ftp.FTPSClient.sslNegotiation(FTPSClient.java:263) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.commons.net.ftp.FTPSClient._connectAction_(FTPSClient.java:197) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.commons.net.SocketClient.connect(SocketClient.java:164) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.commons.net.SocketClient.connect(SocketClient.java:184) 
06-15 10:45:14.886: W/System.err(32467): at org.apache.commons.net.SocketClient.connect(SocketClient.java:273) 
06-15 10:45:14.886: W/System.err(32467): at com.test.FTPClient$getFileListTask.doWhat(FTPClient.java:552) 
06-15 10:45:14.886: W/System.err(32467): at com.test.FTPClient$getFileListTask.doInBackground(FTPClient.java:203) 
06-15 10:45:14.886: W/System.err(32467): at com.test.FTPClient$getFileListTask.doInBackground(FTPClient.java:1) 
06-15 10:45:14.886: W/System.err(32467): at android.os.AsyncTask$2.call(AsyncTask.java:264) 
06-15 10:45:14.894: W/System.err(32467): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 
06-15 10:45:14.894: W/System.err(32467): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
06-15 10:45:14.901: W/System.err(32467): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
06-15 10:45:14.901: W/System.err(32467): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
06-15 10:45:14.901: W/System.err(32467): at java.lang.Thread.run(Thread.java:856) 
06-15 10:45:14.901: W/System.err(32467): java.net.SocketException: Socket closed 
06-15 10:45:14.909: W/System.err(32467): at libcore.io.Posix.sendtoBytes(Native Method) 
06-15 10:45:14.909: W/System.err(32467): at libcore.io.Posix.sendto(Posix.java:146) 
06-15 10:45:14.909: W/System.err(32467): at libcore.io.BlockGuardOs.sendto(BlockGuardOs.java:177) 
06-15 10:45:14.909: W/System.err(32467): at libcore.io.IoBridge.sendto(IoBridge.java:463) 
06-15 10:45:14.909: W/System.err(32467): at java.net.PlainSocketImpl.write(PlainSocketImpl.java:507) 
06-15 10:45:14.917: W/System.err(32467): at java.net.PlainSocketImpl.access$100(PlainSocketImpl.java:46) 
06-15 10:45:14.925: W/System.err(32467): at java.net.PlainSocketImpl$PlainSocketOutputStream.write(PlainSocketImpl.java:269) 
06-15 10:45:14.925: W/System.err(32467): at java.io.OutputStreamWriter.flushBytes(OutputStreamWriter.java:167) 
06-15 10:45:14.925: W/System.err(32467): at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:158) 
06-15 10:45:14.925: W/System.err(32467): at java.io.BufferedWriter.flush(BufferedWriter.java:124) 
06-15 10:45:14.925: W/System.err(32467): at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:477) 
06-15 10:45:14.925: W/System.err(32467): at org.apache.commons.net.ftp.FTPSClient.sendCommand(FTPSClient.java:486) 
06-15 10:45:14.925: W/System.err(32467): at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:537) 
06-15 10:45:14.925: W/System.err(32467): at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:586) 
06-15 10:45:14.925: W/System.err(32467): at org.apache.commons.net.ftp.FTP.syst(FTP.java:1504) 
06-15 10:45:14.933: W/System.err(32467): at org.apache.commons.net.ftp.FTPClient.getSystemType(FTPClient.java:2074) 
06-15 10:45:14.933: W/System.err(32467): at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2511) 
06-15 10:45:14.933: W/System.err(32467): at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2275) 
06-15 10:45:14.933: W/System.err(32467): at com.test.FTPClient$getFileListTask.doWhat(FTPClient.java:298) 
06-15 10:45:14.933: W/System.err(32467): at com.test.FTPClient$getFileListTask.doInBackground(FTPClient.java:205) 
06-15 10:45:14.933: W/System.err(32467): at com.test.FTPClient$getFileListTask.doInBackground(FTPClient.java:1) 
06-15 10:45:14.933: W/System.err(32467): at android.os.AsyncTask$2.call(AsyncTask.java:264) 
06-15 10:45:14.933: W/System.err(32467): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305) 
06-15 10:45:14.933: W/System.err(32467): at java.util.concurrent.FutureTask.run(FutureTask.java:137) 
06-15 10:45:14.933: W/System.err(32467): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 
06-15 10:45:14.933: W/System.err(32467): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 
06-15 10:45:14.933: W/System.err(32467): at java.lang.Thread.run(Thread.java:856)

來源

2012-06-15 just_user

發佈完整堆棧跟蹤。 –

由於某種原因，它沒有找到有效的KeyManager。你在使用什麼設備/ Android版本？另外嘗試'新的FTPSClient（「TLS」）;'看看它是否有所作爲。 –

在Galaxy Nexus 4.0.4上。我也試過TLS，但同樣的事情發生。另外如果我聲明隱式或顯式，和一個端口。有效的KeyManager？這對我來說是新的。 –

出於某種原因，無法創建默認KeyManager，這就是爲什麼初始化SSL上下文失敗。嘗試手動安裝默認的一個。例如：

KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm()); 
kmf.init(null, null); 
KeyManager km = kmf.getKeyManagers()[0]; 

ftpsClient = new FTPSClient("SSL"); 
ftpsClient.setKeyManager(km);

來源

2012-06-15 08:17:47

這會產生另一個崩潰，我在上面添加了堆棧跟蹤。有什麼建議麼？ –

您的服務器是否真的需要SSL？在什麼端口上？它需要客戶端身份驗證嗎？ –

目前我正在測試這個服務器：http://www.secureftp-test.com/這需要它。它在FileZilla上的相同設置可以正常工作。 –

IOException異常：無法初始化SSL上下文 - 阿帕奇百科全書網 - 安卓

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