java ftp 下载

/* * To change this template, choose Tools | Templates * and open the template in the editor. */package jcoapp;/** * * @author luolai */import java.io.DataInputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStream;import java.util.ArrayList;import java.util.List;import java.util.StringTokenizer;import java.util.logging.Level;import java.util.logging.Logger;import sun.net.TelnetInputStream;import sun.net.TelnetOutputStream;import sun.net.ftp.FtpClient;/** * ftp上传，下载 * * @author why 2009-07-30 * */public class FtpUtil {    private String ip = "";    private String username = "";    private String password = "";    private int port = -1;    private String path = "";    FtpClient ftpClient = null;    OutputStream os = null;    FileInputStream is = null;    static String curFolder = System.getProperty("user.dir");    LogInfo loginfo = new LogInfo();    public FtpUtil(String serverIP, String username, String password) {        this.ip = serverIP;        this.username = username;        this.password = password;    }    public FtpUtil(String serverIP, int port, String username, String password) {        this.ip = serverIP;        this.username = username;        this.password = password;        this.port = port;    }    public void setPath(String path) throws IOException {        if (ftpClient == null) {            this.path = path;        } else {            ftpClient.cd(path);        }    }    /**     * 连接ftp服务器     *     * @throws IOException     */    public boolean connectServer() {        if (ftpClient != null) {            return true;        }        ftpClient = new FtpClient();        try {            if (this.port != -1) {                ftpClient.openServer(this.ip, this.port);            } else {                ftpClient.openServer(this.ip);            }            ftpClient.login(this.username, this.password);            if (this.path.length() != 0) {                ftpClient.cd(this.path);// path是ftp服务下主目录的子目录            }            ftpClient.binary();// 用2进制上传、下载            System.out.println("FTP 已登录到\"" + ftpClient.pwd() + "\"目录");            loginfo.appendLog("FTP 已登录到\"" + ftpClient.pwd() + "\"目录");                        return true;        } catch (IOException e) {            e.printStackTrace();            return false;        }    }    /**     * 断开与ftp服务器连接     *     * @throws IOException     */    public boolean closeServer() {        try {            if (is != null) {                is.close();            }            if (os != null) {                os.close();            }            if (ftpClient != null) {                ftpClient.closeServer();            }            System.out.println("已从服务器断开");            loginfo.appendLog("已从服务器断开");            return true;        } catch (IOException e) {            e.printStackTrace();            return false;        }    }    /**     * 检查文件夹在当前目录下是否存在     *     * @param dir     * @return     */    public boolean isDirExist(String dir) {        String pwd = "";        try {            pwd = ftpClient.pwd();            ftpClient.cd(dir);            ftpClient.cd(pwd);        } catch (Exception e) {            return false;        }        return true;    }    public boolean rename(String str1, String str2) throws IOException {        String file1 = "";        String file2 = "";        String folder1 = "";        String folder2 = "";        file1 = str1.substring(str1.lastIndexOf("/") + 1, str1.length());        file2 = str2.substring(str2.lastIndexOf("/") + 1, str2.length());        folder1 = str1.substring(0, str1.lastIndexOf("/") + 1);        folder2 = str2.substring(0, str2.lastIndexOf("/") + 1);        if (!isDirExist(folder2)) {            createDir(folder2);        }        ftpClient.rename(str1, str2);        List l = this.getFileList(folder2);        for (int i = 0; i < l.size(); i++) {            if (l.get(i).toString().indexOf(file2) > 0) {                return true;            }        }        return false;    }    public void sendCMD(String cmd) throws IOException {        ftpClient.sendServer(cmd);        //int reply = ftpClient.readServerResponse();        //System.out.println(reply);        System.out.println(cmd);    }    /**     * 在当前目录下创建文件夹     *     * @param dir     * @return     * @throws Exception     */    private boolean createDir(String dir) {        try {            ftpClient.ascii();            StringTokenizer s = new StringTokenizer(dir, "/"); //sign            s.countTokens();            String pathName = "";//ftpClient.pwd();            while (s.hasMoreElements()) {                pathName = pathName + "/" + (String) s.nextElement();                if (this.isDirExist(pathName)) {                    continue;                }                try {                    ftpClient.sendServer("MKD " + pathName + "\r\n");                } catch (Exception e) {                    e = null;                    return false;                }                ftpClient.readServerResponse();            }            ftpClient.binary();            return true;        } catch (IOException e1) {            e1.printStackTrace();            return false;        }    }    /**     * ftp上传 如果服务器段已存在名为filename的文件夹，该文件夹中与要上传的文件夹中同名的文件将被替换     *     * @param filename 要上传的文件（或文件夹）名     * @return     * @throws Exception     */    public boolean upload(String filename) {        String newname = "";        if (filename.indexOf("/") > -1) {            newname = filename.substring(filename.lastIndexOf("/") + 1);        } else {            newname = filename;        }        return upload(filename, newname);    }    /**     * ftp上传 如果服务器段已存在名为newName的文件夹，该文件夹中与要上传的文件夹中同名的文件将被替换     *     * @param fileName 要上传的文件（或文件夹）名     * @param newName 服务器段要生成的文件（或文件夹）名     * @return     */    public boolean upload(String fileName, String newName) {        try {            String savefilename = new String(fileName.getBytes("ISO-8859-1"), "GBK");            File file_in = new File(savefilename);//打开本地待长传的文件            if (!file_in.exists()) {                throw new Exception("此文件或文件夹[" + file_in.getName() + "]有误或不存在!");            }            if (file_in.isDirectory()) {                upload(file_in.getPath(), newName, ftpClient.pwd());            } else {                uploadFile(file_in.getPath(), newName);            }            if (is != null) {                is.close();            }            if (os != null) {                os.close();            }            return true;        } catch (Exception e) {            e.printStackTrace();            System.err.println("Exception e in Ftp upload(): " + e.toString());            return false;        } finally {            try {                if (is != null) {                    is.close();                }                if (os != null) {                    os.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }    }    /**     * 真正用于上传的方法     *     * @param fileName     * @param newName     * @param path     * @throws Exception     */    private void upload(String fileName, String newName, String path) throws Exception {        String savefilename = new String(fileName.getBytes("ISO-8859-1"), "GBK");        File file_in = new File(savefilename);//打开本地待长传的文件        if (!file_in.exists()) {            throw new Exception("此文件或文件夹[" + file_in.getName() + "]有误或不存在!");        }        if (file_in.isDirectory()) {            if (!isDirExist(newName)) {                createDir(newName);            }            ftpClient.cd(newName);            File sourceFile[] = file_in.listFiles();            for (int i = 0; i < sourceFile.length; i++) {                if (!sourceFile[i].exists()) {                    continue;                }                if (sourceFile[i].isDirectory()) {                    this.upload(sourceFile[i].getPath(), sourceFile[i].getName(), path + "/" + newName);                } else {                    this.uploadFile(sourceFile[i].getPath(), sourceFile[i].getName());                }            }        } else {            uploadFile(file_in.getPath(), newName);        }        ftpClient.cd(path);    }    /**     * upload 上传文件     *     * @param filename 要上传的文件名     * @param newname 上传后的新文件名     * @return -1 文件不存在 >=0 成功上传，返回文件的大小     * @throws Exception     */    public long uploadFile(String filename, String newname) throws Exception {        long result = 0;        TelnetOutputStream os = null;        FileInputStream is = null;        try {            java.io.File file_in = new java.io.File(filename);            if (!file_in.exists()) {                return -1;            }            os = ftpClient.put(newname);            result = file_in.length();            is = new FileInputStream(file_in);            byte[] bytes = new byte[1024];            int c;            while ((c = is.read(bytes)) != -1) {                os.write(bytes, 0, c);            }        } finally {            if (is != null) {                is.close();            }            if (os != null) {                os.close();            }        }        return result;    }    /**     * 从ftp下载文件到本地     *     * @param filename 服务器上的文件名     * @param newfilename 本地生成的文件名     * @return     * @throws Exception     */    public long downloadFile(String filename, String newfilename) {        long result = 0;        TelnetInputStream is = null;        FileOutputStream os = null;        try {            is = ftpClient.get(filename);            java.io.File outfile = new java.io.File(newfilename);            os = new FileOutputStream(outfile);            byte[] bytes = new byte[1024];            int c;            while ((c = is.read(bytes)) != -1) {                os.write(bytes, 0, c);                result = result + c;            }        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if (is != null) {                    is.close();                }                if (os != null) {                    os.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }        return result;    }    /**     * 取得相对于当前连接目录的某个目录下所有文件列表     *     * @param path     * @return     */    public List getFileList(String path) {        List list = new ArrayList();        DataInputStream dis;        try {            System.out.println(this.path + path);            dis = new DataInputStream(ftpClient.nameList(this.path + path));            String filename = "";            while ((filename = dis.readLine()) != null) {                String sfilename = new String(filename.getBytes("ISO-8859-1"), "utf-8");                list.add(sfilename);            }        } catch (IOException e) {            e.printStackTrace();        }        return list;    }    public static void main(String[] args) throws IOException {        String tempFolder = "tmp";        File file = new File(curFolder + "/" + tempFolder);        if (!file.exists()) {            file.mkdir();        }        FtpUtil ftp = new FtpUtil("100.100.100.100", 21, "wmsadm", "abc123456");        ftp.setPath("/sapinstall/WMIMM");        ftp.connectServer();        //boolean result = ftp.upload("D:/4500000436.XML", "/sapinstall/MMIWM/4500000436.XML");        //System.out.println(result ? "上传成功！" : "上传失败！");        List list = ftp.getFileList("/PIX");        for (int i = 0; i < list.size(); i++) {            String name = new String(list.get(i).toString().getBytes("UTF-8"), "iso-8859-1");            System.out.println(name);            if (!ftp.isDirExist(name)) {                ftp.downloadFile(name, curFolder + "\\" + tempFolder + "\\" + name.substring(name.lastIndexOf("/") + 1, name.length()));            }        }        ftp.closeServer();        /**         * 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         */    }}