File file = new File(Environment.getExternalStorageDirectory() + "/pdf");
if(!file.exists())
file.mkdir(); //directory is created;
try {
ftp = new FTPClient();
ftp.connect("yours ftp URL",21);//don't write ftp://
try {
int reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
throw new Exception("Connect failed: " + ftp.getReplyString());
}
if (!ftp.login("username","password")) {
throw new Exception("Login failed: " + ftp.getReplyString());
}
try {
ftp.enterLocalPassiveMode();
if (!ftp.setFileType(FTP.BINARY_FILE_TYPE)) {
// Log.e(TAG, "Setting binary file type failed.");
}
transferFile(ftp);
} catch(Exception e) {
// handleThrowable(e);
} finally {
if (!ftp.logout()) {
// Log.e(TAG, "Logout failed.");
}
}
} catch(Exception e) {
// handleThrowable(e);
} finally {
ftp.disconnect();
}
} catch(Exception e) {
// handleThrowable(e);
}
}
private void transferFile(FTPClient ftp) throws Exception {
long fileSize=0;
fileSize = getFileSize(ftp, "nag.pdf");
Log.v("async","fileSize"+fileSize);
if(!(fileSize==0)){
InputStream is = retrieveFileStream(ftp, "nag.pdf");
downloadFile(is, fileSize);
is.close();
}
else
//nosuch files
if (!ftp.completePendingCommand()) {
throw new Exception("Pending command failed: " + ftp.getReplyString());
}
}
private InputStream retrieveFileStream(FTPClient ftp, String filePath)
throws Exception {
InputStream is = ftp.retrieveFileStream(filePath);
int reply = ftp.getReplyCode();
if (is == null
|| (!FTPReply.isPositivePreliminary(reply)
&& !FTPReply.isPositiveCompletion(reply))) {
throw new Exception(ftp.getReplyString());
}
return is;
}
private byte[] downloadFile(InputStream is, long fileSize)
throws Exception {
outputStream os = newFileOutputStream(Environment.getExternalStorageDirectory()
+ "/pdf/nag.pdf");
byte[] buffer = new byte[(int) fileSize];
int readCount;
while((readCount = is.read(buffer)) > 0) {
os.write(buffer, 0, readCount);
}
Log.i("tag", "buffer = " + buffer);
return buffer; // <-- Here is your file's contents !!!
}
private long getFileSize(FTPClient ftp, String filePath) throws Exception {
long fileSize = 0;
FTPFile[] files = ftp.listFiles(filePath);
if (files.length == 1 && files[0].isFile()) {
fileSize = files[0].getSize();
}
Log.i("tag", "File size = " + fileSize);
return fileSize;
}
}
這是正確的嗎?但仍然無效FileOutputStream desFileStream1 = new FileOutputStream(Environment.getExternalStorageDirectory());布爾status1 = con.retrieveFile(「ftp://ftp.drivehq.com/Baby」,desFileStream1);如何指定服務器路徑 – VSK 2012-01-28 16:47:22