java中帶有詳細說明的FTP

package jing.upfile;

//java中帶有詳細說明的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遠程命令列表 
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 
 在服務器上執行命令,如果用sendServer來執行遠程命令(不能執行本地FTP命令)的話，所有FTP命令都要加上/r/n 
 ftpclient.sendServer("XMKD /test/bb/r/n"); //執行服務器上的FTP命令 
 ftpclient.readServerResponse一定要在sendServer後調用 
 nameList("/test")獲取指目錄下的文件列表 
 XMKD建立目錄，當目錄存在的情況下再次創建目錄時報錯 
 XRMD刪除目錄 
 DELE刪除文件 
* Title: 使用JAVA操作FTP服務器(FTP客戶端)
* Description: 上傳文件的類型及文件大小都放到調用此類的方法中去檢測，比如放到前臺JAVASCRIPT中去檢測等
* 針對FTP中的所有調用使用到文件名的地方請使用完整的路徑名（絕對路徑開始）。
* 
* Copyright: Copyright (c) 2005
* @author 歐朝敬
* QQ:35712069
* 手機:13873195792
* @version 1.0
*/

public class FtpUpfile {
    private FtpClient ftpclient;
    private String ipAddress;
    private int ipPort;
    private String userName;
    private String PassWord;
    /**
     * 構造函數
     * @param ip String 機器IP
     * @param port String 機器FTP端口號
     * @param username String FTP用戶名
     * @param password String FTP密碼
     * @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);
    }

    /**
     * 構造函數
     * @param ip String 機器IP，默認端口爲21
     * @param username String FTP用戶名
     * @param password String FTP密碼
     * @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);
    }

    /**
     * 登錄FTP服務器
     * @throws Exception
     */
    public void login() throws Exception {
        ftpclient.login(userName, PassWord);
    }

    /**
     * 退出FTP服務器
     * @throws Exception
     */
    public void logout() throws Exception {
        //用ftpclient.closeServer()斷開FTP出錯時用下更語句退出
        ftpclient.sendServer("QUIT/r/n");
        int reply = ftpclient.readServerResponse(); //取得服務器的返回信息
    }

    /**
     * 在FTP服務器上建立指定的目錄,當目錄已經存在的情下不會影響目錄下的文件,這樣用以判斷FTP
     * 上傳文件時保證目錄的存在目錄格式必須以"/"根目錄開頭
     * @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();
    }

/**
 * 取得指定目錄下的所有文件名，不包括目錄名稱
 * 分析nameList得到的輸入流中的數，得到指定目錄下的所有文件名
 * @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); //從流中讀取
 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) { //字符模式爲10，二進制模式爲13
 //文件名在數據中開始下標爲j,i-j爲文件名的長度,文件名在數據中的結束下標爲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);
 // 處理代碼處
 //j = i + 2; //上一次位置二進制模式
 j = i + 1; //上一次位置字符模式
 }
 i = i + 1;
 }
 return namesList;
 }

    /**
     * 上傳文件到FTP服務器,destination路徑以FTP服務器的"/"開始，帶文件名、
     * 上傳文件只能使用二進制模式，當文件存在時再次上傳則會覆蓋
     * @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(); //此行代碼必須放在buildList之後
        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中的流上傳到FTP服務器,
     * 上傳文件只能使用二進制模式，當文件存在時再次上傳則會覆蓋
     * 字節數組做爲文件的輸入流,此方法適用於JSP中通過
     * request輸入流來直接上傳文件在RequestUpload類中調用了此方法，
     * destination路徑以FTP服務器的"/"開始，帶文件名
     * @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(); //此行代碼必須放在buildList之後
        TelnetOutputStream ftpOut = ftpclient.put(destination);
        ftpOut.write(sourceData, 0, sourceData.length);
//        ftpOut.flush();
        ftpOut.close();
    }

    /**
     * 從FTP文件服務器上下載文件SourceFileName，到本地destinationFileName
     * 所有的文件名中都要求包括完整的路徑名在內
     * @param SourceFileName String
     * @param destinationFileName String
     * @throws Exception
     */
    public void downFile(String SourceFileName, String destinationFileName) throws
            Exception {
        ftpclient.binary(); //一定要使用二進制模式
        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();
    }

    /**
     *從FTP文件服務器上下載文件，輸出到字節數組中
     * @param SourceFileName String
     * @return byte[]
     * @throws Exception
     */
    public byte[] downFile(String SourceFileName) throws
            Exception {
        ftpclient.binary(); //一定要使用二進制模式
        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;
    }

/**調用示例
 * 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("程序運行完成！");
        /*FTP遠程命令列表
         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
         */
        /*在服務器上執行命令,如果用sendServer來執行遠程命令(不能執行本地FTP命令)的話，所有FTP命令都要加上/r/n
         ftpclient.sendServer("XMKD /test/bb/r/n"); //執行服務器上的FTP命令
         ftpclient.readServerResponse一定要在sendServer後調用
         nameList("/test")獲取指目錄下的文件列表
         XMKD建立目錄，當目錄存在的情況下再次創建目錄時報錯
         XRMD刪除目錄
         DELE刪除文件
         */
    }
}