java 通过ftp读取某个路径下的所有文件内容

你的名字 2023-10-12 14:59 15阅读 0赞

package com.ftp.demo;
    
    import org.apache.commons.net.ftp.FTP;
    import org.apache.commons.net.ftp.FTPClient;
    import org.apache.commons.net.ftp.FTPFile;
    
    import java.io.*;
    
    public class FtpDemo {
    
        public static void main(String[] args) {
            FTPClient ftpClient = new FTPClient();
            String server = "url";
            int port = 21;
            String username = "user";
            String password = "123";
            try {
                // 连接到FTP服务器
                ftpClient.connect(server, port);
                ftpClient.login(username, password);
    
                // 设置文件传输模式为二进制
                ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
    
                if (ftpClient.getReplyCode() > 0) {
                    String dirs = "/filesync";
                    ftpClient.enterLocalPassiveMode();
                    ftpClient.changeWorkingDirectory(dirs);
                    FTPFile[] ftpFiles = ftpClient.listFiles();
                    for (int i = 0; i < ftpFiles.length; i++) {
                        FTPFile ftpFile = ftpFiles[i];
                        System.out.println(ftpFile.getName());
                        InputStream inputStream = ftpClient.retrieveFileStream(dirs + File.separator + ftpFile.getName());
                        if (inputStream == null) {
                            continue;
                        }
                        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
    
                        String s=null;
                        while ((s= reader.readLine())!=null){
                            System.out.println(s);
                        }
                        System.out.println("ftpFile.getName() end.");
                        inputStream.close();
                        reader.close();                                        
                        ftpClient.completePendingCommand();
                    }
                }
    
                // 断开连接
                ftpClient.logout();
                ftpClient.disconnect();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

maven依赖

<dependency> <groupId>commons-net</groupId> <artifactId>commons-net</artifactId> <version>3.8.0</version> </dependency>