幾種不同的FTP下載方式

package com.downupload;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.poi.util.IOUtils;

/**
* Apache commons-net 試用一把,看看FTP客戶端工具做的好用不
*
* Standard:
*/
public class FtpTest {
    public static void main(String[] args) {
//        testUpload();
        testDownload();
    }

    /**
     * FTP上傳單個文件測試
     */
    public static void testUpload() {
        FTPClient ftpClient = new FTPClient();
        FileInputStream fis = null;

        try {
         //下面三行代碼必須要,而且不能改變編碼格式,否則不能正確下載中文文件
         FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
         conf.setServerLanguageCode("zh");
         ftpClient.setControlEncoding("GBK");
            ftpClient.connect("10.0.4.90");
            ftpClient.login("user", "user123");

            File srcFile = new File("D:\\資料文檔\\顏色大全.docx");
            fis = new FileInputStream(srcFile);
            //設置上傳目錄
            ftpClient.changeWorkingDirectory("/");
            ftpClient.setBufferSize(1024);
            ftpClient.setControlEncoding("GBK");
            //設置文件類型(二進制)
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            ftpClient.storeFile("士大夫似的.docx", fis);
            System.out.println("上傳完成!!");
        } catch (IOException e) {
            e.printStackTrace();
            throw new RuntimeException("FTP客戶端出錯!", e);
        } finally {
            IOUtils.closeQuietly(fis);
            try {
                ftpClient.disconnect();
            } catch (IOException e) {
                e.printStackTrace();
                throw new RuntimeException("關閉FTP連接發生異常!", e);
            }
        }
    }

    /**
     * FTP下載單個文件測試
     */
    public static void testDownload() {
        FTPClient ftpClient = new FTPClient();
        FileOutputStream fos = null;
//        ftp://10.0.1.80:2121/
//        ftpuser: sf12345678
        try {
         //下面三行代碼必須要,而且不能改變編碼格式,否則不能正確下載中文文件,文件讀取不了,需要在connect前面設置
         FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
         conf.setServerLanguageCode("zh");
         ftpClient.setControlEncoding("GBK");
            ftpClient.connect("10.0.1.80");
            ftpClient.login("ftpuser", "234234");
//            01\\E_File12\\2010917\\{E40B9575-1B1C-4125-BEF7-9DE18F6C5FB9}.tif
            String remoteFileName = "01/E_File12/20101211/{41789A05-CA00-4343-96A4-678E1F17C299}.xls";
            fos = new FileOutputStream("d:/愛上.xls");

            ftpClient.setBufferSize(1024);
            //設置文件類型(二進制)
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            ftpClient.retrieveFile(remoteFileName, fos);
            System.out.println("下載完成!!");
        } catch (IOException e) {
            e.printStackTrace();
            throw new RuntimeException("FTP客戶端出錯!", e);
        } finally {
            IOUtils.closeQuietly(fos);
            try {
                ftpClient.disconnect();
            } catch (IOException e) {
                e.printStackTrace();
                throw new RuntimeException("關閉FTP連接發生異常!", e);
            }
        }
        System.out.println("oooooooooooooooooooooooooooooooooooooooooooooooooooooooooo");
    }
}

 

 

package com.downupload;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;


//1、加上以下三句即可解決
//
//ftpClient.setControlEncoding(“GBK”);
//
//FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
//conf.setServerLanguageCode("zh");
//解答:經過測試,根本上行不通,上述問題依然存在
//
//2、與上述方式有所類似,但我覺得這種方式更靠譜一點
//
//首先,加上ftpClient.setControlEncoding(“GBK”);這一句,然後,將所有的中文進行轉碼爲“ISO-8859-1”格式,如下:
//
//ftpClient.changeWorkingDirectory(new String(remotePath.getBytes("GBK"),"iso-8859-1"));
//
//解答:經過測試,仍然行不通,之所以我說此方式更靠譜一點,請繼續往下看
//
//首先我們來說說爲什麼要進行轉碼:
//
//因爲在FTP協議裏面,規定文件名編碼爲iso-8859-1,所以目錄名或文件名需要轉碼。
//
//接下來的問題是,我們應該將什麼編碼轉換爲此格式。因此,就有了第二種解決方案——把 GBK格式的轉換爲ISO-8859-1格式。而且,有的人還說,必須得這麼轉。其實,之所以他們能這麼說,我覺得完全是巧合。它的真正原理是,既然 FTP協議規定的編碼格式是“ISO-8859-1”,那麼我們確實得將格式轉換一下,然後等服務器收到文件時再自動轉換爲系統自帶的編碼格式,因此,關鍵不是規定爲什麼格式,而是取決於FTP服務器的編碼格式。因此,如果FTP系統的編碼格式爲“GBK”時,第二種方式肯定會成功;但是,如果系統的編碼格式爲“UTF-8”時,那就會仍然出現亂碼啦。所以,我們只能通過代碼先獲取系統的編碼格式,然後通過此編碼格式轉換爲ISO-8859-1的編碼格式。獲取方式如下:
//
//private static String encoding = System.getProperty("file.encoding");

public class FtpApache {
    private static FTPClient ftpClient = new FTPClient();
    private static String encoding = System.getProperty("file.encoding");
    /**
     * Description: 向FTP服務器上傳文件
     *
     * @Version1.0
     * @param url
     *            FTP服務器hostname
     * @param port
     *            FTP服務器端口
     * @param username
     *            FTP登錄賬號
     * @param password
     *            FTP登錄密碼
     * @param path
     *            FTP服務器保存目錄,如果是根目錄則爲“/”
     * @param filename
     *            上傳到FTP服務器上的文件名
     * @param input
     *            本地文件輸入流
     * @return 成功返回true,否則返回false
     */
    public static boolean uploadFile(String url, int port, String username,
            String password, String path, String filename, InputStream input) {
        boolean result = false;

        try {
            int reply;
            // 如果採用默認端口,可以使用ftp.connect(url)的方式直接連接FTP服務器
            ftpClient.connect(url);
            // ftp.connect(url, port);// 連接FTP服務器
            // 登錄
            ftpClient.login(username, password);
            ftpClient.setControlEncoding(encoding);
            // 檢驗是否連接成功
            reply = ftpClient.getReplyCode();
            if (!FTPReply.isPositiveCompletion(reply)) {
                System.out.println("連接失敗");
                ftpClient.disconnect();
                return result;
            }

            // 轉移工作目錄至指定目錄下
            boolean change = ftpClient.changeWorkingDirectory(path);
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
            if (change) {
                result = ftpClient.storeFile(new String(filename.getBytes(encoding),"iso-8859-1"), input);
                if (result) {
                    System.out.println("上傳成功!");
                }
            }
            input.close();
            ftpClient.logout();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (ftpClient.isConnected()) {
                try {
                    ftpClient.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
        return result;
    }

    /**
     * 將本地文件上傳到FTP服務器上
     *
     */
    public void testUpLoadFromDisk() {
        try {
            FileInputStream in = new FileInputStream(new File("E:/號碼.txt"));
            boolean flag = uploadFile("127.0.0.1", 21, "zlb","123", "/", "哈哈.txt", in);
            System.out.println(flag);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }


    /**
     * Description: 從FTP服務器下載文件
     *
     * @Version1.0
     * @param url
     *            FTP服務器hostname
     * @param port
     *            FTP服務器端口
     * @param username
     *            FTP登錄賬號
     * @param password
     *            FTP登錄密碼
     * @param remotePath
     *            FTP服務器上的相對路徑
     * @param fileName
     *            要下載的文件名
     * @param localPath
     *            下載後保存到本地的路徑
     * @return
     */
    public static boolean downFile(String url, int port, String username,
            String password, String remotePath, String fileName,
            String localPath) {
        boolean result = false;
        try {
            int reply;
            ftpClient.setControlEncoding(encoding);
           
            /*
             *  爲了上傳和下載中文文件,有些地方建議使用以下兩句代替
             *  new String(remotePath.getBytes(encoding),"iso-8859-1")轉碼。
             *  經過測試,通不過。
             */
//            FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
//            conf.setServerLanguageCode("zh");

            ftpClient.connect(url, port);
            // 如果採用默認端口,可以使用ftp.connect(url)的方式直接連接FTP服務器
            ftpClient.login(username, password);// 登錄
            // 設置文件傳輸類型爲二進制
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            // 獲取ftp登錄應答代碼
            reply = ftpClient.getReplyCode();
            // 驗證是否登陸成功
            if (!FTPReply.isPositiveCompletion(reply)) {
                ftpClient.disconnect();
                System.err.println("FTP server refused connection.");
                return result;
            }
            // 轉移到FTP服務器目錄至指定的目錄下
            ftpClient.changeWorkingDirectory(new String(remotePath.getBytes(encoding),"iso-8859-1"));
            // 獲取文件列表
            FTPFile[] fs = ftpClient.listFiles();
            for (FTPFile ff : fs) {
                if (ff.getName().equals(fileName)) {
                    File localFile = new File(localPath + "/" + ff.getName());
                    OutputStream is = new FileOutputStream(localFile);
                    ftpClient.retrieveFile(ff.getName(), is);
                    is.close();
                }
            }

            ftpClient.logout();
            result = true;
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (ftpClient.isConnected()) {
                try {
                    ftpClient.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
        return result;
    }

    /**
     * 將FTP服務器上文件下載到本地
     *
     */
    public void testDownFile() {
        try {
            boolean flag = downFile("127.0.0.1", 21, "zlb",
                    "123", "/", "哈哈.txt", "D:/");
            System.out.println(flag);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
   
    public static void main(String[] args) {
     FtpApache fa = new FtpApache();
        fa.testDownFile();
    }
}

 

 

 

 

 

package com.downupload;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import sun.net.TelnetInputStream;
import sun.net.TelnetOutputStream;
import sun.net.ftp.FtpClient;

/**
 * Java自帶的API對FTP的操作
 * @Title:Ftp.java
 * @author:  
 */
public class Ftp {
    /**
     * 本地文件名
     */
    private String localfilename;
    /**
     * 遠程文件名
     */
    private String remotefilename;
    /**
     * FTP客戶端
     */
    private FtpClient ftpClient;

    /**
     * 服務器連接
     * @param ip 服務器IP
     * @param port 服務器端口
     * @param user 用戶名
     * @param password 密碼
     * @param path 服務器路徑
     * @author
     * @date   2012-7-11
     */
    public void connectServer(String ip, int port, String user,
            String password, String path) {
        try {
            /* ******連接服務器的兩種方法*******/
            //第一種方法
            ftpClient = new FtpClient();
            ftpClient.openServer(ip, port);
            //第二種方法
            ftpClient = new FtpClient(ip);
           
            ftpClient.login(user, password);
            // 設置成2進制傳輸
            ftpClient.binary();
            System.out.println("login success!");
            if (path.length() != 0){
                //把遠程系統上的目錄切換到參數path所指定的目錄
                ftpClient.cd(path);
            }
            ftpClient.binary();
        } catch (IOException ex) {
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
    }
    /**
     * 關閉連接
     * @author
     * @date   2012-7-11
     */
    public void closeConnect() {
        try {
            ftpClient.closeServer();
            System.out.println("disconnect success");
        } catch (IOException ex) {
            System.out.println("not disconnect");
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
    }
    /**
     * 上傳文件
     * @param localFile 本地文件
     * @param remoteFile 遠程文件
     * @author
     * @date   2012-7-11
     */
    public void upload(String localFile, String remoteFile) {
        this.localfilename = localFile;
        this.remotefilename = remoteFile;
        TelnetOutputStream os = null;
        FileInputStream is = null;
        try {
            //將遠程文件加入輸出流中
            os = ftpClient.put(this.remotefilename);
            //獲取本地文件的輸入流
            File file_in = new File(this.localfilename);
            is = new FileInputStream(file_in);
            //創建一個緩衝區
            byte[] bytes = new byte[1024];
            int c;
            while ((c = is.read(bytes)) != -1) {
                os.write(bytes, 0, c);
            }
            System.out.println("upload success");
        } catch (IOException ex) {
            System.out.println("not upload");
            ex.printStackTrace();
            throw new RuntimeException(ex);
        } finally{
            try {
                if(is != null){
                    is.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if(os != null){
                        os.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
   
    /**
     * 下載文件
     * @param remoteFile 遠程文件路徑(服務器端)
     * @param localFile 本地文件路徑(客戶端)
     * @author
     * @date   2012-7-11
     */
    public void download(String remoteFile, String localFile) {
        TelnetInputStream is = null;
        FileOutputStream os = null;
        try {
            //獲取遠程機器上的文件filename,藉助TelnetInputStream把該文件傳送到本地。
            is = ftpClient.get(remoteFile);
            File file_in = new File(localFile);
            os = new FileOutputStream(file_in);
            byte[] bytes = new byte[1024];
            int c;
            while ((c = is.read(bytes)) != -1) {
                os.write(bytes, 0, c);
            }
            System.out.println("download success");
        } catch (IOException ex) {
            System.out.println("not download");
            ex.printStackTrace();
            throw new RuntimeException(ex);
        } finally{
            try {
                if(is != null){
                    is.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if(os != null){
                        os.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    public static void main(String agrs[]) {

        String filepath[] = { "/temp/aa.txt", "/temp/regist.log"};
        String localfilepath[] = { "C:\\tmp\\1.txt","C:\\tmp\\2.log"};

        Ftp fu = new Ftp();
        /*
         * 使用默認的端口號、用戶名、密碼以及根目錄連接FTP服務器
         */
        fu.connectServer("127.0.0.1", 22, "anonymous", "IEUser@", "/temp");
       
        //下載
        for (int i = 0; i < filepath.length; i++) {
            fu.download(filepath[i], localfilepath[i]);
        }
                String localfile = "E:\\號碼.txt";
        String remotefile = "/temp/哈哈.txt";
        //上傳
        fu.upload(localfile, remotefile);
        fu.closeConnect();

       System.out.println("呵呵呵呵呵呵呵呵呵呵呵呵呵呵");

       System.out.println("123456798=======================123123123123123123123");

    }
}

 

 

 

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