我正在尝试从Android应用程序将一些照片上传到ftps服务器上。一切似乎一直有效，直到调用storeFile(remote, input)导致关于javax.net.ssl.SSLException的错误Broken pipe为止，因此照片没有上传到服务器上。
请您帮我看看为什么会出现这个错误？
预先谢谢您！
我不能使用行ftp.setAuthValue("SSL");，因为它说500 This security scheme is not implemented
private class BackGroundWorker extends AsyncTask<String, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
Log.d(TAG,"BackGroundWorker is running");
}
@Override
protected Void doInBackground(String... params) {
String local = params[1];
String remote = params[2];
String server = "[HIDDEN]";
int port = 21;
String user = "[HIDDEN]";
String pass = "[HIDDEN]";
FTPSClient ftp = new FTPSClient("SSL");
//ftp.setAuthValue("SSL");
ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out), true));
try
{
int reply;
ftp.connect(server, port);
System.out.println("Connected to " + server + " on " + port);
// After connection attempt, you should check the reply code to verify
// success.
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
System.err.println("FTP server refused connection.");
Log.e(TAG, "Error");
}
}
catch (IOException e){
if (ftp.isConnected()){
try{
ftp.disconnect();
}
catch (IOException f){
}
}
System.err.println("Could not connect to server.");
e.printStackTrace();
}
try{
if (!ftp.login(user, pass)){
ftp.logout();
}
System.out.println("Remote system is " + ftp.getSystemType());
//ftp.setBufferSize(1000);
ftp.execPBSZ(0);
ftp.execPROT("P");
ftp.setFileType(FTP.BINARY_FILE_TYPE);
ftp.enterLocalPassiveMode();
// transfer files
InputStream input;
input = new FileInputStream(local);
ftp.storeFile(remote, input);
/* SECOND METHOD, same error
OutputStream outputStream = ftp.storeFileStream(remote);
byte[] bytesIn = new byte[4096];
int read = 0;
while ((read = input.read(bytesIn)) != -1) {
outputStream.write(bytesIn, 0, read);
}
outputStream.close();
*/
input.close();
ftp.noop(); // check that control connection is working OK
ftp.logout();
}
catch (FTPConnectionClosedException e){
System.err.println("Server closed connection.");
e.printStackTrace();
}
catch (IOException e){
e.printStackTrace();
}
finally{
if (ftp.isConnected()){
try{
ftp.disconnect();
}
catch (IOException f){
//do nothing
}
}
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
Log.d(TAG,"BackGroundWorker is finished");
}
}
}
07-16 13:44:53.040 8030-8056/com.example.test D/FTPfunctions3: BackGroundWorker is running
07-16 13:44:53.040 8030-8056/com.example.test I/System.out: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
07-16 13:44:53.041 8030-8056/com.example.test I/System.out: 220-You are user number 1 of 50 allowed.
07-16 13:44:53.041 8030-8056/com.example.test I/System.out: 220-Local time is now 15:45. Server port: 21.
07-16 13:44:53.041 8030-8056/com.example.test I/System.out: 220-This is a private system - No anonymous login
07-16 13:44:53.041 8030-8056/com.example.test I/System.out: 220-IPv6 connections are also welcome on this server.
07-16 13:44:53.041 8030-8056/com.example.test I/System.out: 220 You will be disconnected after 15 minutes of inactivity.
07-16 13:44:53.042 8030-8056/com.example.test I/System.out: AUTH TLS
07-16 13:44:53.054 8030-8056/com.example.test I/System.out: 234 AUTH TLS OK.
07-16 13:44:53.071 8030-8048/com.example.test D/EGL_emulation: eglMakeCurrent: 0xadc34d60: ver 2 0 (tinfo 0xadc39430)
07-16 13:44:53.094 8030-8048/com.example.test D/EGL_emulation: eglMakeCurrent: 0xadc34d60: ver 2 0 (tinfo 0xadc39430)
07-16 13:44:53.097 8030-8056/com.example.test I/System.out: Connected to [HIDDEN] on 21
07-16 13:44:53.101 8030-8056/com.example.test I/System.out: USER *******
07-16 13:44:53.114 8030-8056/com.example.test I/System.out: 331 User [HIDDEN] OK. Password required
07-16 13:44:53.116 8030-8056/com.example.test I/System.out: PASS *******
07-16 13:44:53.118 8030-8048/com.example.test D/EGL_emulation: eglMakeCurrent: 0xadc34d60: ver 2 0 (tinfo 0xadc39430)
07-16 13:44:53.186 8030-8048/com.example.test D/EGL_emulation: eglMakeCurrent: 0xadc34d60: ver 2 0 (tinfo 0xadc39430)
07-16 13:44:53.205 8030-8056/com.example.test I/System.out: 230 OK. Current restricted directory is /
07-16 13:44:53.206 8030-8056/com.example.test I/System.out: SYST
07-16 13:44:53.221 8030-8056/com.example.test I/System.out: 215 UNIX Type: L8
07-16 13:44:53.221 8030-8056/com.example.test I/System.out: Remote system is UNIX Type: L8
07-16 13:44:53.222 8030-8056/com.example.test I/System.out: PBSZ 0
07-16 13:44:53.232 8030-8048/com.example.test D/EGL_emulation: eglMakeCurrent: 0xadc34d60: ver 2 0 (tinfo 0xadc39430)
07-16 13:44:53.235 8030-8056/com.example.test I/System.out: 200 PBSZ=0
07-16 13:44:53.235 8030-8056/com.example.test I/System.out: PROT P
07-16 13:44:53.247 8030-8056/com.example.test I/System.out: 200 Data protection level set to "private"
07-16 13:44:53.249 8030-8056/com.example.test I/System.out: TYPE I
07-16 13:44:53.256 8030-8048/com.example.test D/EGL_emulation: eglMakeCurrent: 0xadc34d60: ver 2 0 (tinfo 0xadc39430)
07-16 13:44:53.262 8030-8056/com.example.test I/System.out: 200 TYPE is now 8-bit binary
07-16 13:44:53.267 8030-8056/com.example.test I/System.out: PASV
07-16 13:44:53.280 8030-8056/com.example.test I/System.out: 227 Entering Passive Mode (5,134,13,241,172,5)
07-16 13:44:53.300 8030-8056/com.example.test I/System.out: STOR pictures/test 16.07 1422/test 16.07 1422_16.6.2019_0.22.21.848.jpg
07-16 13:44:53.311 8030-8056/com.example.test I/System.out: 150 Accepted data connection
07-16 13:44:53.444 8030-8056/com.example.test W/System.err: javax.net.ssl.SSLException: Write error: ssl=0xadc87e00: I/O error during system call, Broken pipe
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at com.android.org.conscrypt.NativeCrypto.SSL_write(Native Method)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl$SSLOutputStream.write(OpenSSLSocketImpl.java:765)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at java.io.BufferedOutputStream.flushInternal(BufferedOutputStream.java:185)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:85)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at java.io.FilterOutputStream.close(FilterOutputStream.java:61)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at java.io.BufferedOutputStream.close(BufferedOutputStream.java:152)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at org.apache.commons.net.ftp.FTPClient._storeFile(FTPClient.java:688)
07-16 13:44:53.445 8030-8056/com.example.test W/System.err: at org.apache.commons.net.ftp.FTPClient.__storeFile(FTPClient.java:639)
07-16 13:44:53.446 8030-8056/com.example.test W/System.err: at org.apache.commons.net.ftp.FTPClient.storeFile(FTPClient.java:2030)
07-16 13:44:53.446 8030-8056/com.example.test W/System.err: at com.example.test.functions.FTPfunctions3$BackGroundWorker.doInBackground(FTPfunctions3.java:102)
07-16 13:44:53.446 8030-8056/com.example.test W/System.err: at com.example.test.functions.FTPfunctions3$BackGroundWorker.doInBackground(FTPfunctions3.java:35)
07-16 13:44:53.446 8030-8056/com.example.test W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:292)
07-16 13:44:53.446 8030-8056/com.example.test W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
07-16 13:44:53.447 8030-8056/com.example.test W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
07-16 13:44:53.451 8030-8056/com.example.test W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
07-16 13:44:53.453 8030-8056/com.example.test W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
07-16 13:44:53.453 8030-8056/com.example.test W/System.err: at java.lang.Thread.run(Thread.java:818)
07-16 13:44:53.475 8030-8030/com.example.test D/FTPfunctions3: BackGroundWorker is finished
首先，我不明白为什么无法在服务器上找到本月的ftp日志文件。
此外，我尝试使用PatchedFTPSClient重用相同的FTPS连接，但是我仍然遇到错误，现在总是出现错误：java.lang.NoSuchFieldException: sessionHostPortCache。请问有人明白为什么吗？
PatchedFTPSClient的来源：Transfer files from android with FTPS to the server