java中带有详细说明的FTP

package jing.upfile;

//java中带有详细说明的FTP,使用sun.net.ftp包下的api
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
* @author 欧朝敬
* QQ:35712069
* 手机: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[i];
 //System.out.println(i + " " + bc + " : " + (int) names[i]);
 //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("192.150.189.22", 21, "admin", "admin");
 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(
                "C://Documents and Settings//Administrator//My Documents//SetupDJ.exe");
        byte[] data = new byte[20480000];
        fin.read(data, 0, data.length);
        fUp.upFile(data, "/test/SetupDJ.exe");
        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
         */
    }
}