最近在做ssh ，sftp。顺便总结一下java实现ftp的几种方式。

1、sun.net

import sun.net.ftp.*;

import sun.net.*;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.ByteArrayOutputStream;

import java.util.ArrayList;

import java.util.StringTokenizer;

/**

FTP远程命令列表

USER    PORT    RETR    ALLO    DELE    SITE    XMKD    CDUP    FEAT

PASS    PASV    STOR    REST    CWD     STAT    RMD     XCUP    OPTS

ACCT    TYPE    APPE    RNFR    XCWD    HELP    XRMD    STOU    AUTH

REIN    STRU    SMNT    RNTO    LIST    NOOP    PWD     SIZE    PBSZ

QUIT    MODE    SYST    ABOR    NLST    MKD     XPWD    MDTM    PROT

在服务器上执行命令,如果用sendServer来执行远程命令(不能执行本地FTP命令)的话，所有FTP命令都要加上\r\n

ftpclient.sendServer("XMKD /test/bb\r\n"); //执行服务器上的FTP命令

ftpclient.readServerResponse一定要在sendServer后调用

nameList("/test")获取指目录下的文件列表

XMKD建立目录，当目录存在的情况下再次创建目录时报错

XRMD删除目录

DELE删除文件

*

Title: 使用JAVA操作FTP服务器(FTP客户端)

*

Description: 上传文件的类型及文件大小都放到调用此类的方法中去检测，比如放到前台JAVASCRIPT中去检测等

* 针对FTP中的所有调用使用到文件名的地方请使用完整的路径名(绝对路径开始)。

*

*

Copyright: Copyright (c) 2005

*

Company: 静靖工作室

* @author 欧朝敬  13873195792

* @version 1.0

*/

public class FtpUpfile {

private FtpClient ftpclient;

private String ipAddress;

private int ipPort;

private String userName;

private String PassWord;

/**

* 构造函数

* @param ip String 机器IP

* @param port String 机器FTP端口号

* @param username String FTP用户名

* @param password String FTP密码

* @throws Exception

*/

public FtpUpfile(String ip, int port, String username, String password) throws

Exception {

ipAddress = new String(ip);

ipPort = port;

ftpclient = new FtpClient(ipAddress, ipPort);

//ftpclient = new FtpClient(ipAddress);

userName = new String(username);

PassWord = new String(password);

}

/**

* 构造函数

* @param ip String 机器IP，默认端口为21

* @param username String FTP用户名

* @param password String FTP密码

* @throws Exception

*/

public FtpUpfile(String ip, String username, String password) throws

Exception {

ipAddress = new String(ip);

ipPort = 21;

ftpclient = new FtpClient(ipAddress, ipPort);

//ftpclient = new FtpClient(ipAddress);

userName = new String(username);

PassWord = new String(password);

}

/**

* 登录FTP服务器

* @throws Exception

*/

public void login() throws Exception {

ftpclient.login(userName, PassWord);

}

/**

* 退出FTP服务器

* @throws Exception

*/

public void logout() throws Exception {

//用ftpclient.closeServer()断开FTP出错时用下更语句退出

ftpclient.sendServer("QUIT\r\n");

int reply = ftpclient.readServerResponse(); //取得服务器的返回信息

}

/**

* 在FTP服务器上建立指定的目录,当目录已经存在的情下不会影响目录下的文件,这样用以判断FTP

* 上传文件时保证目录的存在目录格式必须以"/"根目录开头

* @param pathList String

* @throws Exception

*/

public void buildList(String pathList) throws Exception {

ftpclient.ascii();

StringTokenizer s = new StringTokenizer(pathList, "/"); //sign

int count = s.countTokens();

String pathName = "";

while (s.hasMoreElements()) {

pathName = pathName + "/" + (String) s.nextElement();

try {

ftpclient.sendServer("XMKD " + pathName + "\r\n");

} catch (Exception e) {

e = null;

}

int reply = ftpclient.readServerResponse();

}

ftpclient.binary();

}

/**

* 取得指定目录下的所有文件名，不包括目录名称

* 分析nameList得到的输入流中的数，得到指定目录下的所有文件名

* @param fullPath String

* @return ArrayList

* @throws Exception

*/

public ArrayList fileNames(String fullPath) throws Exception {

ftpclient.ascii(); //注意，使用字符模式

TelnetInputStream list = ftpclient.nameList(fullPath);

byte[] names = new byte[2048];

int bufsize = 0;

bufsize = list.read(names, 0, names.length); //从流中读取

list.close();

ArrayList namesList = new ArrayList();

int i = 0;

int j = 0;

while (i < bufsize /*names.length*/) {

//char bc = (char) names;

//System.out.println(i + "  " + bc + " : " + (int) names);

//i = i + 1;

if (names[i] == 10) { //字符模式为10，二进制模式为13

//文件名在数据中开始下标为j,i-j为文件名的长度,文件名在数据中的结束下标为i-1

//System.out.write(names, j, i - j);

//System.out.println(j + "   " + i + "    " + (i - j));

String tempName = new String(names, j, i - j);

namesList.add(tempName);

//System.out.println(temp);

// 处理代码处

//j = i + 2; //上一次位置二进制模式

j = i + 1; //上一次位置字符模式

}

i = i + 1;

}

return namesList;

}

/**

* 上传文件到FTP服务器,destination路径以FTP服务器的"/"开始，带文件名、

* 上传文件只能使用二进制模式，当文件存在时再次上传则会覆盖

* @param source String

* @param destination String

* @throws Exception

*/

public void upFile(String source, String destination) throws Exception {

buildList(destination.substring(0, destination.lastIndexOf("/")));

ftpclient.binary(); //此行代码必须放在buildList之后

TelnetOutputStream ftpOut = ftpclient.put(destination);

TelnetInputStream ftpIn = new TelnetInputStream(new

FileInputStream(source), true);

byte[] buf = new byte[204800];

int bufsize = 0;

while ((bufsize = ftpIn.read(buf, 0, buf.length)) != -1) {

ftpOut.write(buf, 0, bufsize);

}

ftpIn.close();

ftpOut.close();

}

/**

* JSP中的流上传到FTP服务器,

* 上传文件只能使用二进制模式，当文件存在时再次上传则会覆盖

* 字节数组做为文件的输入流,此方法适用于JSP中通过

* request输入流来直接上传文件在RequestUpload类中调用了此方法，

* destination路径以FTP服务器的"/"开始，带文件名

* @param sourceData byte[]

* @param destination String

* @throws Exception

*/

public void upFile(byte[] sourceData, String destination) throws Exception {

buildList(destination.substring(0, destination.lastIndexOf("/")));

ftpclient.binary(); //此行代码必须放在buildList之后

TelnetOutputStream ftpOut = ftpclient.put(destination);

ftpOut.write(sourceData, 0, sourceData.length);

//        ftpOut.flush();

ftpOut.close();

}

/**

* 从FTP文件服务器上下载文件SourceFileName，到本地destinationFileName

* 所有的文件名中都要求包括完整的路径名在内

* @param SourceFileName String

* @param destinationFileName String

* @throws Exception

*/

public void downFile(String SourceFileName, String destinationFileName) throws

Exception {

ftpclient.binary(); //一定要使用二进制模式

TelnetInputStream ftpIn = ftpclient.get(SourceFileName);

byte[] buf = new byte[204800];

int bufsize = 0;

FileOutputStream ftpOut = new FileOutputStream(destinationFileName);

while ((bufsize = ftpIn.read(buf, 0, buf.length)) != -1) {

ftpOut.write(buf, 0, bufsize);

}

ftpOut.close();

ftpIn.close();

}

/**

*从FTP文件服务器上下载文件，输出到字节数组中

* @param SourceFileName String

* @return byte[]

* @throws Exception

*/

public byte[] downFile(String SourceFileName) throws

Exception {

ftpclient.binary(); //一定要使用二进制模式

TelnetInputStream ftpIn = ftpclient.get(SourceFileName);

ByteArrayOutputStream byteOut = new ByteArrayOutputStream();

byte[] buf = new byte[204800];

int bufsize = 0;

while ((bufsize = ftpIn.read(buf, 0, buf.length)) != -1) {

byteOut.write(buf, 0, bufsize);

}

byte[] return_arraybyte = byteOut.toByteArray();

byteOut.close();

ftpIn.close();

return return_arraybyte;

}

/**调用示例

* FtpUpfile fUp = new FtpUpfile("192.150.189.22", 21, "admin", "admin");

* fUp.login();

* fUp.buildList("/adfadsg/sfsdfd/cc");

* String destination = "/test.zip";

* fUp.upFile("C:\\Documents and Settings\\Administrator\\My Documents\\sample.zip",destination);

* ArrayList filename = fUp.fileNames("/");

* for (int i = 0; i < filename.size(); i++) {

*     System.out.println(filename.get(i).toString());

* }

* fUp.logout();

* @param args String[]

* @throws Exception

*/

public static void main(String[] args) throws Exception {

FtpUpfile fUp = new FtpUpfile("172.16.0.142", 22, "ivr", "ivr");

fUp.login();

/*        fUp.buildList("/adfadsg/sfsdfd/cc");

String destination = "/test/SetupDJ.rar";

fUp.upFile(

"C:\\Documents and Settings\\Administrator\\My Documents\\SetupDJ.rar",

destination);

ArrayList filename = fUp.fileNames("/");

for (int i = 0; i < filename.size(); i++) {

System.out.println(filename.get(i).toString());

}

fUp.downFile("/sample.zip", "d:\\sample.zip");

*/

FileInputStream fin = new FileInputStream(

"d:\\wapPush.txt");

byte[] data = new byte[20480000];

fin.read(data, 0, data.length);

fUp.upFile(data, "/home/cdr/wapPush.txt");

fUp.logout();

System.out.println("程序运行完成！");

/*FTP远程命令列表

USER    PORT    RETR    ALLO    DELE    SITE    XMKD    CDUP    FEAT

PASS    PASV    STOR    REST    CWD     STAT    RMD     XCUP    OPTS

ACCT    TYPE    APPE    RNFR    XCWD    HELP    XRMD    STOU    AUTH

REIN    STRU    SMNT    RNTO    LIST    NOOP    PWD     SIZE    PBSZ

QUIT    MODE    SYST    ABOR    NLST    MKD     XPWD    MDTM    PROT

*/

/*在服务器上执行命令,如果用sendServer来执行远程命令(不能执行本地FTP命令)的话，所有FTP命令都要加上\r\n

ftpclient.sendServer("XMKD /test/bb\r\n"); //执行服务器上的FTP命令

ftpclient.readServerResponse一定要在sendServer后调用

nameList("/test")获取指目录下的文件列表

XMKD建立目录，当目录存在的情况下再次创建目录时报错

XRMD删除目录

DELE删除文件

*/

}

}

2、apache的common.net

package com.ftp;

import java.io.*;

import java.net.InetAddress;

import org.apache.commons.net.ftp.*;

import org.apache.commons.net.ftp.parser.*;

import org.apache.commons.net.ftp.FTPFile;

import org.apache.commons.net.ftp.FTPFileEntryParser;

import sun.net.TelnetInputStream;

public class FtpAppache {

public FtpAppache() throws Exception{

// sun.net.ftp.FtpClient ft = null;

//  TelnetInputStream t = ft.list();

// t.setStickyCRLF(true);

}

public void test1() throws Exception {

//

String strTemp = "";

//InetAddress ia = InetAddress.getByName("192.168.0.193");

FTPClient ftp = new FTPClient();

ftp.connect("172.16.0.142",22

);

boolean blogin =

ftp.login("ivr

", "ivr");

if (!blogin) {

System.out.println("连接失败");

ftp.disconnect

();

ftp = null;

return;

}

/*//如果是中文名必需进行字符集转换

boolean bMakeFlag =

ftp.makeDirectory(new

String("测试目录".getBytes(

"gb2312"), "iso-8859-1")); //在服务器创建目录

//上传文件到服务器，目录自由创建

File file = new File("c:\\test.properties");

ftp.storeFile("test.properties",new

FileInputStream(file));*/

System.out.println(

ftp.getSystemName

());

FTPFile[] ftpFiles =

ftp.listFiles

();

if (ftpFiles != null) {

for (int i = 0; i < ftpFiles.length; i++) {

System.out.println(ftpFiles[i].getName());

//System.out.println(ftpFiles[i].isFile());

if (ftpFiles[i].isFile()) {

FTPFile ftpf = new FTPFile();

/*System.err.println(ftpf.hasPermission(FTPFile.GROUP_ACCESS,

FTPFile.EXECUTE_PERMISSION));

System.err.println("READ_PERMISSION="+ftpf.hasPermission(FTPFile.USER_ACCESS,

FTPFile.READ_PERMISSION));

System.err.println("EXECUTE_PERMISSION="+ftpf.hasPermission(FTPFile.USER_ACCESS,

FTPFile.EXECUTE_PERMISSION));

System.err.println("WRITE_PERMISSION="+ftpf.hasPermission(FTPFile.USER_ACCESS,

FTPFile.WRITE_PERMISSION));

System.err.println(ftpf.hasPermission(FTPFile.WORLD_ACCESS,

FTPFile.READ_PERMISSION));*/

}

//System.out.println(ftpFiles[i].getUser());

}

}

//下载服务器文件

FileOutputStream fos = new FileOutputStream("e:/proftpd-1.2.10.tar.gz");

ftp.retrieveFile("proftpd-1.2.10.tar.gz",fos

);

fos.close();

//改变ftp目录

//ftp.changeToParentDirectory();//回到父目录

//ftp.changeWorkingDirectory("");//转移工作目录

//ftp.completePendingCommand();//

//删除ftp服务器文件

//ftp.deleteFile("");

//注销当前用户，

//ftp.logout();

//ftp.structureMount("");

ftp.disconnect

();

ftp = null;

}

/**

* 封装好的东西是好用，碰到这种问题，我们就。。。up

* @param args String[]

*/

public static void main(String[] args) {

try {

FtpAppache ftpAppache1 = new FtpAppache();

ftpAppache1.test1();

}

catch (Exception e) {

e.printStackTrace();

}

}

}

3、edtftpj

package com.boss;

import com.enterprisedt.net.ftp.FTPClient;

import com.enterprisedt.net.ftp.FTPMessageCollector;

import com.enterprisedt.net.ftp.FTPTransferType;

import com.enterprisedt.net.ftp.FTPConnectMode;

import com.enterprisedt.util.debug.Level;

import com.enterprisedt.util.debug.Logger;

/**

*  Simple test class for FTPClient

*

*  @author      Hans Andersen

*  @author      Bruce Blackshaw

*/

public class Demo {

/**

*  Revision control id

*/

private static String cvsId = "@(#)$Id: Demo.java,v 1.6 2005/03/18 11:12:56 bruceb Exp $";

/**

*  Log stream

*/

private static Logger log = Logger.getLogger(Demo.class);

/**

* Standard main()

*

* @param args  standard args

*/

public static void main(String[] args) {

// assign args to make it clear

String host = "172.16.0.142";

String user = "ivr";

String password = "ivr";

Logger.setLevel(Level.ALL);

FTPClient ftp = null;

try {

// set up client

ftp = new FTPClient();

ftp.setRemoteHost(host

);

ftp.setRemotePort(22

);

ftp.setConnectMode(FTPConnectMode.ACTIVE

);

FTPMessageCollector listener = new FTPMessageCollector();

ftp.setMessageListener(listener

);

//ftp.setAutoPassiveIPSubstitution(true);

// connect

log.info("Connecting");

ftp.connect

();

// login

log.info("Logging in");

ftp.login(user

, password);

// set up passive ASCII transfers

log.debug("Setting up passive, ASCII transfers");

ftp.setConnectMode(FTPConnectMode.PASV

);

ftp.setType(FTPTransferType.ASCII

);

// get directory and print it to console

log.debug("Directory before put:");

String[] files =

ftp.dir

(".", true);

for (int i = 0; i < files.length; i++)

log.debug(files[i]);

// copy file to server

log.info("Putting file");

ftp.put("test.txt

", "test.txt");

// get directory and print it to console

log.debug("Directory after put");

files =

ftp.dir

(".", true);

for (int i = 0; i < files.length; i++)

log.debug(files[i]);

// copy file from server

log.info("Getting file");

ftp.get("test.txt

" + ".copy", "test.txt");

// delete file from server

log.info("Deleting file");

ftp.delete("test.txt

");

// get directory and print it to console

log.debug("Directory after delete");

files =

ftp.dir

("", true);

for (int i = 0; i < files.length; i++)

log.debug(files[i]);

// Shut down client

log.info("Quitting client");

ftp.quit

();

String messages = listener.getLog();

log.debug("Listener log:");

log.debug(messages);

log.info("Test complete");

} catch (Exception e) {

log.error("Demo failed", e);

}

}

/**

*  Basic usage statement

*/

public static void usage() {

System.out.println("Usage: Demo remotehost user password");

}

}

4、sshtools，maverick-ssh.jar

package com.sshtools.examples.echo;

import com.sshtools.j2ssh.configuration.SshConnectionProperties;

import com.sshtools.j2ssh.authentication.*;

import com.sshtools.j2ssh.transport.*;

import com.sshtools.j2ssh.SshException;

import org.apache.log4j.Logger;

import java.io.*;

import com.sshtools.j2ssh.subsystem.*;

/**

*

*

Echo Client

*

Provides a simple example of using the sshtools subsystem framework

*

Copyright: Copyright (c) 2002 Lee David Painter

*

Company: Sshtools.com

* @author Lee David Painter

* @version 1.0

*/

public class EchoClient extends SubsystemClient {

private static Logger log = Logger.getLogger(EchoClient.class);

/**

* Contructor for the echo client object

*/

public EchoClient() {

super("echo", true);

registerSubsystemMessage(EchoMessage.SSH_ECHO_MESSAGE, EchoMessage.class);

}

/**

* Sends a string to the remote ssh server and waits for the same string

* to be echoed back

* @param msg

*/

public void sendEcho(String msg) {

try {

EchoMessage echo = new EchoMessage(msg);

this.sendMessage(echo);

SubsystemMessage reply = nextMessage();

if(reply.getMessageType()== EchoMessage.SSH_ECHO_MESSAGE) {

System.out.println("Server echo> " + ((EchoMessage)reply).getMessage());

}

}

catch(SshException e) {

e.printStackTrace();

}

}

/**

* Entry point for the EchoClient sample application

* @param args

*/

public static void main(String args[]) {

try {

org.apache.log4j.BasicConfigurator.configure();

EchoClient client = new EchoClient();

SshConnectionProperties properties = new SshConnectionProperties();

properties.setHost("172.106.0.142");

properties.setUsername("ivr");

final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

client.connect(properties, new HostKeyVerification() {

public void onDeniedHost(String host) {

System.out.println("Access to the host " + host + " is denied from this system");

}

public void onHostKeyMismatch(String host, String fingerprint, String actual) {

try {

System.out.println("The host key supplied by " + host + " is: " + actual);

System.out.println("The current allowed key for " + host + " is: " + fingerprint);

getResponse(host, actual);

}

catch(Exception e) {

e.printStackTrace();

}

}

private void getResponse(String host, String fingerprint)

throws InvalidHostFileException,

IOException {

String response = "";

while(!(response.equalsIgnoreCase("YES") || response.equalsIgnoreCase("NO")

|| response.equalsIgnoreCase("ALWAYS"))) {

System.out.print("Do you want to allow this host key? [Yes|No|Always]: ");

response = reader.readLine();

}

if(response.equalsIgnoreCase("YES"))

allowHost(host, fingerprint, false);

if(response.equalsIgnoreCase("NO")) {

System.out.println("Cannot continue without a valid host key");

System.exit(1);

}

if(response.equalsIgnoreCase("ALWAYS"))

allowHost(host, fingerprint, true);

}

public void onUnknownHost(String host, String fingerprint) {

try {

System.out.println("The host " +  host + " is currently unknown to the system");

System.out.println("The host key fingerprint is: " + fingerprint);

getResponse(host, fingerprint);

}

catch(Exception e) {

e.printStackTrace();

}

}

});

PasswordAuthentication password = new PasswordAuthentication();

password.setPassword("ivr");

password.setUsername("ivr");

client.authenticate(password);

String message;

do {

System.out.print("Message> ");

message = reader.readLine();

client.sendEcho(message);

} while(!message.equalsIgnoreCase("EXIT"));

client.close();

}

catch(SshException e) {

e.printStackTrace();

}

catch(IOException ioe) {

ioe.printStackTrace();

}

}

}