使用FTPClient实现文件上传服务器

import ch.qos.logback.classic.Logger;
import org.apache.commons.net.ftp.*;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;

public class uploadutil {
    public final static Logger logger= (Logger) LoggerFactory.getLogger(uploadutil.class);
    private static String ftpip=propertiesutil.getValue("ftp.server.ip");
    private static String ftpuser=propertiesutil.getValue("ftp.user");
    private static String ftppass=propertiesutil.getValue("ftp.password");

    private int port;
    private String ip;
    private String user;
    private String pass;
    private FTPClient ftpClient;

    public uploadutil(int port, String ip, String user, String pass) {
        this.port = port;
        this.ip = ip;
        this.user = user;
        this.pass = pass;
    }

    public String getUser() {
        return user;
    }

    public void setUser(String user) {
        this.user = user;
    }

    public int getPort() {
        return port;
    }

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

    public String getIp() {
        return ip;
    }

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

    public FTPClient getFtpClient() {
        return ftpClient;
    }

    public void setFtpClient(FTPClient ftpClient) {
        this.ftpClient = ftpClient;
    }

    public String getPass() {
        return pass;
    }

    public void setPass(String pass) {
        this.pass = pass;
    }
public  static boolean uploadok(List<File> filelist) throws IOException {
    uploadutil u=new uploadutil(14147,ftpip,ftpuser,ftppass);
    logger.info("start upload");
    boolean result=u.uploads("work",filelist);
    logger.info("end upload");
    return result;
}
private boolean uploads(String remotepath,List<File> listfile) throws IOException {
    boolean upload=true;
    FileInputStream f=null;
    if(connectserver(this.getPort(),this.getIp(),this.getUser(),this.pass)){
        try {
            ftpClient.changeWorkingDirectory(remotepath);
            ftpClient.setBufferSize(1024);
            ftpClient.setControlEncoding("utf-8");
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            ftpClient.enterLocalPassiveMode();
            for(File file:listfile){
                f=new FileInputStream(file);
                ftpClient.storeFile(file.getName(),f);
            }
        } catch (IOException e) {
            logger.error("文件上传异常",e);
            upload=false;
            e.printStackTrace();
        }finally {
            f.close();
            ftpClient.disconnect();
        }

    }
    return upload;
}
    private boolean connectserver(int port, String ip, String user, String pass){
        ftpClient=new FTPClient();
        boolean isok=false;
        try {
            ftpClient.connect(ip);
            isok=ftpClient.login(user,pass);
        } catch (IOException e) {
            logger.error("链接服务器异常",e);
        }
        return isok;
    }

}