我正在尝试使用 apache commons 将目录中的所有文件下载到我的本地计算机,如下所示:
import java.io.FileOutputStream;
import org.apache.commons.net.ftp.FTPClient;
import java.io.IOException;
import java.net.SocketException;
import org.apache.commons.net.ftp.FTPFile;
public class FTPExample {
public static void main(String[] args) throws SocketException, IOException {
FTPClient client = new FTPClient();
client.connect("MyHostName");
client.enterLocalPassiveMode();
client.login("username", "password");
FTPFile[] files = client.listFiles("/App/");
for (FTPFile file : files) {
System.out.println(file.getName());
FileOutputStream fos = new FileOutputStream("Ftp Files/" + file.getName());
client.retrieveFile(file.getName(),fos);
}
}
}
我能够列出目录中的文件,但在尝试下载文件时出现 FilenotFound 异常。请帮忙。 我的错误是:
Exception in thread "main" java.io.FileNotFoundException: Ftp Files\01 (The system cannot find the path specified)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:212)
at java.io.FileOutputStream.<init>(FileOutputStream.java:104)
at ftpexample.FTPExample.main(FTPExample.java:30)
Java Result: 1
编辑:我需要将文件以其原始文件名存储在文件夹 Ftp 文件/中。
最佳答案
感谢那些试图提供帮助的人。我在这里找到了问题的答案。这是我如何做到的:
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
public class FTPExample {
public static void main(String[] args) {
try {
//new ftp client
FTPClient ftp = new FTPClient();
//try to connect
ftp.connect("MyHhostName");
//login to server
if (!ftp.login("username", "password")) {
ftp.logout();
}
int reply = ftp.getReplyCode();
//FTPReply stores a set of constants for FTP reply codes.
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
}
//enter passive mode
ftp.enterLocalPassiveMode();
//get system name
System.out.println("Remote system is " + ftp.getSystemType());
//change current directory
ftp.changeWorkingDirectory("/App/PMIGENV/BACK/Finacle/FC/app/CDCI_LOGS/log/UBSADMIN");
System.out.println("Current directory is " + ftp.printWorkingDirectory());
//get list of filenames
FTPFile[] ftpFiles = ftp.listFiles();
if (ftpFiles != null && ftpFiles.length > 0) {
//loop thru files
for (FTPFile file : ftpFiles) {
if (!file.isFile()) {
continue;
}
System.out.println("File is " + file.getName());
//get output stream
OutputStream output;
output = new FileOutputStream("FtpFiles" + "/" + file.getName());
//get the file from the remote system
ftp.retrieveFile(file.getName(), output);
//close output stream
output.close();
//delete the file
// ftp.deleteFile(file.getName());
}
}
ftp.logout();
ftp.disconnect();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
关于java - 使用 apache commons 将多个文件通过 FTP 传输到本地目录,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16911772/