java 操作FTP服务器（1）-连接服务器测试

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1、在服务器上面新建一个ftp服务器，并且支持FTP文件协议

2.测试代码：

package com.ding.test;import com.ding.util.FTPClientUtils;import org.apache.commons.net.ftp.FTPClient;import org.apache.commons.net.ftp.FTPFile;import org.apache.commons.net.ftp.FTPReply;import java.io.File;import java.io.IOException;/** * Created by ding on 1/16/16. */public class FtpTest {    public  static void main(String []agrs){        FTPClient ftp = new FTPClient();        try {            ftp.connect("192.168.1.110",21);            ftp.login("root","123456");           int reply= ftp.getReplyCode();            System.out.println(" reply =="+reply);            if (!FTPReply.isPositiveCompletion(reply)) {                ftp.disconnect();                System.err.println("FTP server refused connection.");                System.exit(1);            }//            FTPFile[] files = ftp.listNames();            String[] names = ftp.listNames();            for (int i = 0; i < names.length; i++) {                System.out.println(names[i]);            }        }catch (IOException e){            e.printStackTrace();        }//        System.out.println(FTPClientUtils.openConnectFTPService());//        FTPClinetUtils.changeWorkingDirectory("/home/ubuntu/uftp");//        FTPClinetUtils.ListNamesAll();//        FTPClinetUtils.makeDirectory("adsfdas");//        FTPClinetUtils.deleteFile("/home/ubuntu/uftp/4a36acaf2edda3ccf1bb668601e93901213f923d.jpg");//        FTPClinetUtils.deleteDirectory("/home/ubuntu/uftp/testtest/dadaaad/dadaaad");        //下载文件//       boolean flag= FTPClinetUtils.downloadFile("2015082709590657592.bin","/home/ding/test.bin");        //上传文件//        String path = "/home/ubuntu/uftp/testtest/dadaaad/dadaaad/dadaaad/dadaaad";//        File file = new File("/home/ding/test.bin");//        boolean flag= FTPClientUtils.uploadFile(file,"test.bin",path);//        System.out.println(flag);//        String[] str = path.split("/");//        System.out.println(str.length);//        for (int i=0;i<str.length;i++) {//            System.out.println(" 第" + i + "元素,String=/"+ str[i]);//        }//        FTPClinetUtils.makeDirectory(path);//        FTPClientUtils.closeConnection();    }}

连接成功后，会返回FTP存放目录的文件及文件夹

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