Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - cannot find symbol - this is the error i am getting when i run this code:
package ftp.upload;
import java.io.FileInputStream;
import java.io.IOException;
public class FtpUpload {
public static void main(String[] args) {
/* line 14 */ FtpClient client = new FTPClient();
FileInputStream fis = null;
try {
client.connect("test.info");
client.login("test", "test");
//
// Create an InputStream of the file to be uploaded
//
String filename = "Touch.dat";
fis = new FileInputStream(filename);
//
// Store file to server
//
client.storeFile(filename, fis);
client.logout();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (fis != null) {
fis.close();
}
client.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
that is the code for my ftp upload the error is on line 14
thanks for the help
Currently your compiler doesn't know what FTPClient is.
Download this commons-net.jar file from here
Add a import to FTPClient
import org.apache.commons.net.ftp.FTPClient;
Also there's a typo on your code,
FtpClient client = new FTPClient();
but it should be
FTPClient client = new FTPClient();
Also have a look at here for FTPClient documentation.
Related
I'm trying to download a file from server using FTP, the Java code works if the file is available in remote server but if the specific file is not available in the remote server a new file is getting created with same file name in local. How can I avoid this?
and I'm trying to check the properties such as last modified time, file created time etc.., of the specific file before download, I used MLST but getting type casting issues..!!
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
public class FTPDownloadFileDemo {
public static void main(String[] args) {
String server = "www.myserver.com";
int port = 21;
String user = "user";
String pass = "pass";
FTPClient ftpClient = new FTPClient();
try {
ftpClient.connect(server, port);
ftpClient.login(user, pass);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
// APPROACH #1: using retrieveFile(String, OutputStream)
String remoteFile1 = "/test/video.mp4";
File downloadFile1 = new File("D:/Downloads/video.mp4");
OutputStream outputStream1 = new BufferedOutputStream(new FileOutputStream(downloadFile1));
boolean success = ftpClient.retrieveFile(remoteFile1, outputStream1);
outputStream1.close();
if (success) {
System.out.println("File #1 has been downloaded successfully.");
}
outputStream2.close();
inputStream.close();
} catch (IOException ex) {
System.out.println("Error: " + ex.getMessage());
ex.printStackTrace();
} finally {
try {
if (ftpClient.isConnected()) {
ftpClient.logout();
ftpClient.disconnect();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
The retrieveFile() method always writes a local file, whether or not the remote file exists. Instead, you can use retrieveFileStream() and check the reply code.
A handy list of FTP reply codes is available from Wikipedia. If 550 is received, it means the file does not exist.
Finally, you need to use completePendingCommand() to complete the transaction and a FileOutputStream to write the file.
InputStream inputStream = ftpClient.retrieveFileStream(remoteFile1);
int returnCode = ftpClient.getReplyCode();
if (inputStream == null || returnCode == 550) {
System.out.println("Remote file does not exist");
} else {
ftpClient.completePendingCommand();
byte[] buffer = new byte[inputStream.available()];
inputStream.read(buffer);
OutputStream outputStream = new FileOutputStream(downloadFile1);
outputStream.write(buffer);
outputStream.close();
}
Your problem is that your Outputstream automatically creates the File, even if the stream is empty.
I would recommend you check first if the file exists on the server and based on that you don't even create the outputStream:
boolean checkFileExists(String filePath) throws IOException {
InputStream inputStream = ftpClient.retrieveFileStream(remoteFile1);
returnCode = ftpClient.getReplyCode();
return inputStream == null || returnCode == 550;
}
I've been tasked with a project to automate a process in which we extract a file from a WinSCP client daily. So far I've been able to automate the login and setup a recurring schedule for the code to run; however it seems I've hit a bump in the road. When I attempt to locate a file for retrieval nothing happens. This is because the file I wish to access is through a remote directory. I'm almost positive that the code I've written is bug free. I am just unsure if specify a certain path which java can locate the file. I have no idea how to tell the java code where to extract this file from. Any thoughts?
You can try and use the code below:
More details can be found here.
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
/**
* A program demonstrates how to upload files from local computer to a remote
* FTP server using Apache Commons Net API.
* #author www.codejava.net
*/
public class FTPDownloadFileDemo {
public static void main(String[] args) {
String server = "www.myserver.com";
int port = 21;
String user = "user";
String pass = "pass";
FTPClient ftpClient = new FTPClient();
try {
ftpClient.connect(server, port);
ftpClient.login(user, pass);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
// APPROACH #1: using retrieveFile(String, OutputStream)
String remoteFile1 = "/test/video.mp4";
File downloadFile1 = new File("D:/Downloads/video.mp4");
OutputStream outputStream1 = new BufferedOutputStream(new FileOutputStream(downloadFile1));
boolean success = ftpClient.retrieveFile(remoteFile1, outputStream1);
outputStream1.close();
if (success) {
System.out.println("File #1 has been downloaded successfully.");
}
// APPROACH #2: using InputStream retrieveFileStream(String)
String remoteFile2 = "/test/song.mp3";
File downloadFile2 = new File("D:/Downloads/song.mp3");
OutputStream outputStream2 = new BufferedOutputStream(new FileOutputStream(downloadFile2));
InputStream inputStream = ftpClient.retrieveFileStream(remoteFile2);
byte[] bytesArray = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(bytesArray)) != -1) {
outputStream2.write(bytesArray, 0, bytesRead);
}
success = ftpClient.completePendingCommand();
if (success) {
System.out.println("File #2 has been downloaded successfully.");
}
outputStream2.close();
inputStream.close();
} catch (IOException ex) {
System.out.println("Error: " + ex.getMessage());
ex.printStackTrace();
} finally {
try {
if (ftpClient.isConnected()) {
ftpClient.logout();
ftpClient.disconnect();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
i'm new to java programming and am using Apache commons net ftp to upload text files to my ftp server.
however, it seems that i can only upload the files on the same directory as my program .. when i set the file path to something like that : "C:\Users\Packard\Documents\ProjectsJava\FugeLessons\outputFile.txt" , it throws no errors, but when i check the ftp, there is nothing, like it has not been uploaded .
here is the code i'm using :
import org.apache.commons.net.ftp.FTPClient;
import java.io.FileInputStream;
import java.io.IOException;
public class ftp{
private final String host = "ftp.address.com";
private final String user = "user";
private final String pass = "pass";
public static void main(String[] args) {
ftp client = new ftp();
client.FtpUpload("C:\\Users\\Packard\\Documents\\ProjectsJava\\FugeLessons\\outputFile.txt");
}
public String FtpUpload(String filename){
FTPClient client = new FTPClient();
FileInputStream fis = null;
try {
client.connect(this.host);
client.login(this.user, this.pass);
fis = new FileInputStream(filename);
client.storeFile(filename, fis);
client.logout();
System.out.println("File " + filename + "\t uploaded successfully!");
} catch(IOException e){
error error = new error();
error.setVisible(true);
e.printStackTrace();
} finally {
try {
if ( fis != null) {
fis.close();
}
client.disconnect();
} catch(IOException e){
e.printStackTrace();
}
}
String ret = "success";
return ret;
}
}
what am i doing wrong ?
Thanks for your help!
You can use ftpClient method getReplyString() to get the error message. Below code can help.
boolean isSendSucces = ftpClient.storeFile(fileName, input );
if( isSendSuccess )
{
System.out.println("Sent File: " + fileName);
}
else
{
System.out.println("Problem is sending File: " + ftpClient.getReplyString());
}
I've to upload a zip file to ftp server, And here zip file also constructing dynamically.
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.ZipOutputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.io.IOUtils;
import org.apache.commons.net.ftp.FTPClient;
public class CommonsNet {
public static void main(String[] args) throws Exception {
FTPClient client = new FTPClient();
FileInputStream fis = null;
try {
client.connect("127.0.0.1");
client.login("phani", "phani");
String filename = "D://junk.pdf";
fis = new FileInputStream(new File(filename));
byte[] bs = IOUtils.toByteArray(fis);
fis.close();
OutputStream outputStream = client.storeFileStream("remote.zip");
ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream);
zipOutputStream.setLevel(ZipOutputStream.STORED);
addOneFileToZipArchive(zipOutputStream,
"junk.pdf", bs);
zipOutputStream.close();
outputStream.close();
client.logout();
System.out.println("Transfer done");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (fis != null) {
fis.close();
}
client.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void addOneFileToZipArchive(ZipOutputStream zipStream,
String fileName, byte[] content) throws Exception {
ZipArchiveEntry zipEntry = new ZipArchiveEntry(fileName);
zipStream.putNextEntry(zipEntry);
zipStream.write(content);
zipStream.flush();
zipStream.closeEntry();
}
}
After executing this code the file is successfully created but i am unable to open a file inside archive.
like :
! D:\phani\remote.zip: The archive is corrupt
! D:\phani\remote.zip: Checksum error in C:\Users\BHAVIR~1.KUM\AppData\Local\Temp\Rar$DIa0.489\MCReport.pdf. The file is corrupt
Try adding client.setFileType(FTP.BINARY_FILE_TYPE); just after you have logged in.
I remember that default transfer mode is ASCII, so non-ascii files may result corrupted.
I tried this code to download a file from my company's ftp site. The file gets downloaded but has 0 kb in size. Any idea? Thanks a lot !
package org.kodejava.example.commons.net;<br/><br/>
import org.apache.commons.net.ftp.FTPClient;
import java.io.IOException;
import java.io.FileOutputStream;
public class FtpDownloadDemo {
public static void main(String[] args) {
FTPClient client = new FTPClient();
FileOutputStream fos = null;
try {
client.connect("ftp.domain.com");
client.login("admin", "secret");
String filename = "sitemap.xml";
fos = new FileOutputStream(filename);
client.retrieveFile("/" + filename, fos);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (fos != null) {
fos.close();
}
client.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}