java实现连接ftp服务器并上传文件到ftp

服务器的代码怎么写？

您好！以下是Java实现连接FTP服务器并上传文件到FTP服务器的代码示例：

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;

public class FTPUploadDemo {

    public static void main(String[] args) {
        String server = "ftp.example.com";
        int port = 21;
        String user = "username";
        String pass = "password";
        String remoteFilePath = "/upload/example.txt";
        String localFilePath = "C:/example.txt";

        FTPClient ftpClient = new FTPClient();
        try {
            ftpClient.connect(server, port);
            ftpClient.login(user, pass);
            ftpClient.enterLocalPassiveMode();

            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);

            FileInputStream inputStream = new FileInputStream(new File(localFilePath));

            boolean done = ftpClient.storeFile(remoteFilePath, inputStream);
            inputStream.close();
            if (done) {
                System.out.println("The file was uploaded successfully.");
            }
        } 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();
            }
        }
    }
}

请注意，这只是一个示例代码，您需要根据实际情况进行修改和调整。