可分为四步，话不多说
1、引入apache ftp依赖
<dependency>
<groupId>org.apache.ftpserver</groupId>
<artifactId>ftpserver-core</artifactId>
<version>1.1.1</version>
</dependency>
2、创建ftp所需用户信息 users.properties
例如配置一个root用户：
#密码 配置新的用户
ftpserver.user.root.userpassword=root123
#主目录，这里可以自定义自己的主目录
ftpserver.user.root.homedirectory=D:\\home\\ftp
#当前用户可用
ftpserver.user.root.enableflag=true
#具有上传权限
ftpserver.user.root.writepermission=true
#最大登陆用户数为20
ftpserver.user.root.maxloginnumber=20
#同IP登陆用户数为2
ftpserver.user.root.maxloginperip=2
#空闲时间为300秒
ftpserver.user.root.idletime=300
#上传速率限制为480000字节每秒
ftpserver.user.root.uploadrate=48000000
#下载速率限制为480000字节每秒
ftpserver.user.root.downloadrate=48000000
3、创建ftp配置信息
@Slf4j
@Configuration
public class FtpConfig extends CachingConfigurerSupport {
@Value("${ftp.port}")
private Integer ftpPort;
@Value("${ftp.activePort}")
private Integer ftpActivePort;
@Value("${ftp.passivePorts}")
private String ftpPassivePorts;
@Bean
public FtpServer createFtpServer(){
FtpServerFactory serverFactory = new FtpServerFactory();
ListenerFactory factory = new ListenerFactory();
// ftp端口
factory.setPort(ftpPort);
DataConnectionConfigurationFactory dataConnectionConfigurationFactory=new DataConnectionConfigurationFactory();
//设置多少时间后关闭一个闲置的链接，单位是秒,0代表不设置
dataConnectionConfigurationFactory.setIdleTime(60*60*24);
//设置主动模式端口
dataConnectionConfigurationFactory.setActiveLocalPort(ftpActivePort);
dataConnectionConfigurationFactory.setPassiveIpCheck(true);
//设置被动模式端口
dataConnectionConfigurationFactory.setPassivePorts(ftpPassivePorts);
factory.setDataConnectionConfiguration(dataConnectionConfigurationFactory.createDataConnectionConfiguration());
//替换默认监听器
serverFactory.addListener("default", factory.createListener());
PropertiesUserManagerFactory userManagerFactory = new PropertiesUserManagerFactory();
try {
ClassPathResource classPathResource = new ClassPathResource("users.properties");
userManagerFactory.setUrl(classPathResource.getURL());
} catch (Exception e){
// throw new RuntimeException("配置文件users.properties不存在");
log.error("users.properties is not exist.");
}
userManagerFactory.setPasswordEncryptor(new ClearTextPasswordEncryptor());
serverFactory.setUserManager(userManagerFactory.createUserManager());
//自定义用户事件
Map<String, Ftplet> ftpLets = new HashMap<String, Ftplet>();
ftpLets.put("ftpService", new CustomFtplet());
serverFactory.setFtplets(ftpLets);
//创建ftp服务器
FtpServer server = serverFactory.createServer();
try {
server.start();
} catch (FtpException e) {
log.error("ftp server init failed.");
}
log.info("ftp server init successfully.");
return server;
}
}
4、自定义一些用户事件
@Slf4j
public class CustomFtplet extends DefaultFtplet {
@Override
public FtpletResult onLogin(FtpSession session, FtpRequest request) throws FtpException, IOException {
try {
User user = session.getUser();
String requestLine = request.getRequestLine();
String name = user.getName();
log.info("用户:'{}'登录成功，requestLine：'{}'", name, requestLine);
}catch (Exception exception){
log.error("用户:'{}'登录异常:{}", session.toString(),exception.toString());
}
return super.onLogin(session, request);
}
@Override
public FtpletResult onConnect(FtpSession session) throws FtpException, IOException {
try {
UUID sessionId = session.getSessionId();
InetSocketAddress clientAddress = session.getClientAddress();
String hostString = clientAddress.getHostString();
log.info("用户:'{}'，hostString：'{}'，建立连接", sessionId, hostString);
}catch (Exception exception){
log.error("用户:'{}'，建立连接异常:{}", session.toString(),exception.toString());
}
return super.onConnect(session);
}
@Override
public FtpletResult onDisconnect(FtpSession session) throws FtpException, IOException {
try{
String name = session.getUser().getName();
String hostString = session.getClientAddress().getHostString();
log.info("用户:'{}'，hostString：'{}'，断开连接", name, hostString);
}catch (Exception exception){
log.error("用户:'{}'，断开连接异常:{}", session.toString(),exception.toString());
}
return super.onDisconnect(session);
}
/**
*
* 开始上传
* Override this method to intercept uploads
* @param session The current {@link FtpSession}
* @param request The current {@link FtpRequest}
* @return The action for the container to take
* @throws FtpException
* @throws IOException
*/
@Override
public FtpletResult onUploadStart(FtpSession session, FtpRequest request) throws FtpException, IOException {
try {
//获取上传文件的上传路径
String path = session.getUser().getHomeDirectory();
//自动创建上传路径
File file=new File(path);
if (!file.exists()){
file.mkdirs();
}
//获取上传用户
String name = session.getUser().getName();
//获取上传文件名
String filename = request.getArgument();
log.info("用户:'{}'，上传文件到目录：'{}'，文件名称为：'{}'，状态：开始上传~", name, path, filename);
}catch (Exception exception){
log.error("用户:'{}'，上传文件异常:{}", session.toString(),exception.toString());
}
return super.onUploadStart(session, request);
}
/**
* 上传完成
* Override this method to handle uploads after completion
* @param session The current {@link FtpSession}
* @param request The current {@link FtpRequest}
* @return The action for the container to take
* @throws FtpException
* @throws IOException
*/
@Override
public FtpletResult onUploadEnd(FtpSession session, FtpRequest request) throws FtpException, IOException {
try {
//获取上传文件的上传路径
String path = session.getUser().getHomeDirectory();
//获取上传用户
String name = session.getUser().getName();
//获取上传文件名
String filename = request.getArgument();
File file=new File(path+"/"+filename);
if (file.exists()){
System.out.println(file);
}
log.info("用户:'{}'，上传文件到目录：'{}'，文件名称为：'{}，状态：成功！'", name, path, filename);
}catch (Exception exception){
log.error("用户:'{}'，上传文件结束异常:{}", session.toString(),exception.toString());
}
return super.onUploadEnd(session, request);
}
}
结果展示：可以使用fileliza进行登录
10:04:57.432 [NioProcessor-3] INFO o.a.f.l.n.FtpLoggingFilter - [log,186] - CREATED
10:04:57.435 [pool-5-thread-1] INFO o.a.f.l.n.FtpLoggingFilter - [log,186] - OPENED
10:05:05.203 [pool-5-thread-1] INFO c.c.s.c.CustomFtplet - [onConnect,33] - 用户:'3bfb89a0-32b4-43f2-8ca6-0a01c88bcc8b'，hostString：'10.192.31.179'，建立连接
10:05:05.256 [pool-5-thread-1] INFO o.a.f.l.n.FtpLoggingFilter - [log,157] - SENT: 220 Service ready for new user.
10:05:05.258 [pool-5-thread-1] INFO o.a.f.l.n.FtpLoggingFilter - [messageReceived,84] - RECEIVED: AUTH TLS
10:05:05.259 [pool-5-thread-1] INFO o.a.f.l.n.FtpLoggingFilter - [log,157] - SENT: 431 Service is unavailable.
10:05:05.259 [pool-5-thread-1] INFO o.a.f.l.n.FtpLoggingFilter - [messageReceived,84] - RECEIVED: AUTH SSL
10:05:05.260 [pool-5-thread-2] INFO o.a.f.l.n.FtpLoggingFilter - [log,157] - SENT: 431 Service is unavailable.
10:05:19.359 [pool-5-thread-1] INFO o.a.f.l.n.FtpLoggingFilter - [messageReceived,84] - RECEIVED: USER root
10:05:19.362 [pool-5-thread-2] INFO o.a.f.l.n.FtpLoggingFilter - [log,157] - SENT: 331 User name okay, need password for root.
10:05:19.362 [pool-5-thread-2] INFO o.a.f.l.n.FtpLoggingFilter - [messageReceived,84] - RECEIVED: PASS *****
10:05:19.376 [pool-5-thread-2] INFO o.a.f.c.impl.PASS - [execute,245] - Login success - root
10:05:26.483 [pool-5-thread-2] INFO c.c.s.c.CustomFtplet - [onLogin,20] - 用户:'root'登录成功，requestLine：'PASS root123'
10:05:26.484 [pool-5-thread-2] INFO o.a.f.l.n.FtpLoggingFilter - [log,157] - SENT: 230 User logged in, proceed.