Ubuntu20.04 搭建 FTP 服务，根目录为用户目录/home/user/ftp

1、前言

ftp搭建需求

2、创建文件夹

cd /home/bjlthy
mkdir ftp
chmod 777 ftp/

3、安装

sudo apt-get remove vsftpd
sudo rm /etc/pam.d/vsftpd
sudo apt-get install vsftpd

3、ftp配置

sudo vim /etc/vsftpd.conf

后面直接追加以下内容

anonymous_enable=YES
write_enable=YES
anon_upload_enable=YES
anon_world_readable_only=NO
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
chroot_local_user=YES
chroot_list_enable=YES
chroot_list_file=/etc/vsftpd.chroot_list
utf8_filesystem=YES
local_root=/home/bjlthy/ftp
seccomp_sandbox=NO

sudo vim /etc/vsftpd.chroot_list

root
bjlthy
ftp

4、重启

sudo /etc/init.d/vsftpd restart
ps -ef | grep ftp

使用FTP工具连接成功

5、java代码

        <dependency>
            <groupId>commons-net</groupId>
            <artifactId>commons-net</artifactId>
            <version>3.6</version>
        </dependency>

package com.ruoyi.project.utils;

import java.io.*;

import ch.qos.logback.classic.Logger;
import com.ruoyi.project.tool.tcc.LogbackUtil;
import org.apache.commons.net.ftp.*;

public class FtpUtil {
    private Logger logger = LogbackUtil.getLogger("FtpUtil");
    private FTPClient ftpClient;

    public static void main(String[] args) throws Exception {
        FtpUtil ftpUtil = new FtpUtil();
        FtpModel ftpModel = ftpUtil.getFtpModel("192.168.1.4", 21, "admin", "******");
        String connect = ftpUtil.connect(ftpModel);
        System.out.println("======== connect " + connect);

        // String uploadFile = ftpUtil.uploadFile("./testDir", "C:\\Users\\A\\Desktop\\桌面临时\\FtpUtil.java");
        // System.out.println("uploadFile " + uploadFile);

        // String downloadDir = ftpUtil.downloadDirFiles(ftpModel, "C:\\Users\\A\\Desktop\\桌面临时\\downloadDir", "./testDir");
        // System.out.println("downloadDir " + downloadDir);

        // String res = ftpUtil.downloadFile("./testDir/FtpUtil.java", "C:\\Users\\A\\Desktop\\桌面临时\\ftpSave", "FtpUtil222.java");
        // System.out.println("======== res " + res);

        String deleteFile = ftpUtil.deleteFile("./testDir", "FtpUtil.java");
        System.out.println("======== deleteFile " + deleteFile);
    }

    public String connect(FtpModel ftpModel) {
        ftpClient = new FTPClient();
        String res;
        try {
            ftpClient.connect(ftpModel.getIp(), ftpModel.getPort());
            ftpClient.login(ftpModel.getUserName(), ftpModel.getPassword());
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            ftpClient.setControlEncoding("UTF-8");
            // ftpClient.changeWorkingDirectory(ftpModel.getWorkDir());
            ftpClient.enterLocalPassiveMode();
            int reply = ftpClient.getReplyCode();
            if (!FTPReply.isPositiveCompletion(reply)) {
                ftpClient.disconnect();
                res = "-1 " + reply;
            } else {
                res = "0 " + reply;
            }
        } catch (Exception e) {
            logger.error("连接ftp服务失败" + e.getMessage(), e);
            e.printStackTrace();
            res = "-1 " + e.getMessage();
        }
        return res;
    }

    public String uploadFile(String remoteBaseDir, String fileName) throws Exception {
        try {
            boolean makeDirectory = ftpClient.makeDirectory(remoteBaseDir);
            boolean b1 = ftpClient.changeWorkingDirectory(remoteBaseDir);
            File file = new File(fileName);
            FileInputStream fileInputStream = new FileInputStream(file);
            boolean b = ftpClient.storeFile(file.getName(), fileInputStream);
            fileInputStream.close();
            return b ? "0" : "-1";
        } catch (Exception e) {
            e.printStackTrace();
            return "-1 " + e.getMessage();
        }
    }

    public String downloadFile(String remoteFileName, String saveDir, String fileName) {
        String res;
        try {
            File fileDir = new File(saveDir);
            if (!fileDir.exists()) {
                fileDir.mkdirs();
            }
            File localFile = new File(saveDir + File.separatorChar + fileName);
            OutputStream os = new FileOutputStream(localFile);
            //ftp中文名需要iso-8859-1字符
            boolean flag2 = ftpClient.retrieveFile(new String(remoteFileName.getBytes("GBK"), "iso-8859-1"), os);
            os.close();
            closeFtp();
            if (!flag2) {
                localFile.delete();
                res = "-1 " + "没有找到 " + remoteFileName + " 该文件";
            } else {
                res = "0";
            }
        } catch (Exception e) {
            e.printStackTrace();
            res = "-1 " + e.getMessage();
        }
        return res;
    }

    public void closeFtp() {
        if (ftpClient != null && ftpClient.isConnected()) {
            try {
                ftpClient.logout();
                ftpClient.disconnect();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * ftp上传文件
     */
    public void upload(File file) throws Exception {
        if (!file.isDirectory()) {
            FileInputStream fileInputStream = new FileInputStream(file);
            ftpClient.storeFile(file.getName(), fileInputStream);
            fileInputStream.close();
        } else {
            ftpClient.makeDirectory(file.getName());
            ftpClient.changeWorkingDirectory(file.getName());
            String[] files = file.list();
            for (String fileStr : files) {
                File file1 = new File(file.getPath() + "/" + fileStr);
                if (file1.isDirectory()) {
                    upload(file1);
                    ftpClient.changeToParentDirectory();
                } else {
                    File file2 = new File(file.getPath() + "/" + fileStr);
                    FileInputStream fileInputStream = new FileInputStream(file2);
                    ftpClient.storeFile(file2.getName(), fileInputStream);
                    fileInputStream.close();
                }
            }
        }
    }


    public String downloadDirFiles(FtpModel ftpModel, String localBaseDir, String remoteBaseDir) {
        String connect = connect(ftpModel);
        if (connect.startsWith("-1")) {
            return "-1 连接失败";
        }
        try {
            FTPFile[] files;
            boolean isChangeDir = ftpClient.changeWorkingDirectory(remoteBaseDir);
            if (!isChangeDir) {
                return "-1 changeWorkingDirectory fail";
            }
            ftpClient.setControlEncoding("UTF-8");
            files = ftpClient.listFiles();
            for (FTPFile ftpFile : files) {
                downloadFile(ftpFile, localBaseDir);
                // deleteFtpFile(remoteBaseDir, ftpFile.getName());
            }
            closeFtp();
            return "0";
        } catch (Exception e) {
            e.printStackTrace();
            return "-1 下载过程中出现异常" + e.getMessage();
        }
    }

    private void downloadFile(FTPFile ftpFile, String localBaseDir) {
        OutputStream outputStream;
        try {
            String localFilePath = localBaseDir + File.separatorChar + ftpFile.getName();
            File locaFile = new File(localFilePath);
            if (locaFile.exists()) {
                return;
            }
            File fileParent = locaFile.getParentFile();
            if (!fileParent.exists()) {
                fileParent.mkdirs();
            }
            outputStream = new FileOutputStream(localFilePath);
            ftpClient.retrieveFile(ftpFile.getName(), outputStream);
            outputStream.flush();
            outputStream.close();
        } catch (Exception e) {
            logger.error(e.toString());
            e.printStackTrace();
        }
    }

    public String deleteFile(String remoteDir, String remoteFileName) {
        String res;
        try {
            ftpClient.changeWorkingDirectory(remoteDir);
            int dele = ftpClient.dele(remoteFileName);

            res = dele == 250 ? "0" : "-1";
        } catch (Exception e) {
            logger.error("删除的文件失败");
            e.printStackTrace();
            res = "-1 " + e.getMessage();
        }
        return res;
    }

    public FtpModel getFtpModel(String ip, Integer port, String userName, String password) {
        return new FtpModel(ip, port, userName, password);
    }

    public class FtpModel {
        public String ip;
        public Integer port;
        public String userName;
        public String password;

        public String getIp() {
            return ip;
        }

        public void setIp(String ip) {
            this.ip = ip;
        }

        public Integer getPort() {
            return port;
        }

        public void setPort(Integer port) {
            this.port = port;
        }

        public String getUserName() {
            return userName;
        }

        public void setUserName(String userName) {
            this.userName = userName;
        }

        public String getPassword() {
            return password;
        }

        public void setPassword(String password) {
            this.password = password;
        }

        public FtpModel() {
        }

        public FtpModel(String ip, Integer port, String userName, String password) {
            this.ip = ip;
            this.port = port;
            this.userName = userName;
            this.password = password;
        }
    }
}

6、参考

匿名权限控制

anonymous_enable=YES　　 #是否启用匿名用户
no_anon_password=YES 　　#匿名用户login时不询问口令

下面这四个主要语句控制这文件和文件夹的上传、下载、创建、删除和重命名。
anon_upload_enable=（yes/no)；  #控制匿名用户对文件（非目录）上传权限。#YES表示匿名用户可以上传
anon_world_readable_only=（yes/no）； #控制匿名用户对文件的下载权限  #NO表示匿名用户可以下载
anon_mkdir_write_enable=（yes/no）； #控制匿名用户对文件夹的创建权限 #YES
anon_other_write_enable=（yes/no）； #控制匿名用户对文件和文件夹的删除和重命名 #YES

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