java ftp上传下载远程服务器文件的代码详情-代码-最代码

首页>代码>java ftp上传下载远程服务器文件>/FTPTest/src/Test.java
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 sun.net.TelnetInputStream;
import sun.net.TelnetOutputStream;
import sun.net.ftp.FtpClient;

/**
 * ftp上传，下载
 * 
 * 
 * @author why 2009-07-30
 * 
 */
public class Test {
	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;

	public Test(String serverIP, String username, String password) {
		this.ip = serverIP;
		this.username = username;
		this.password = password;
	}

	public Test(String serverIP, int port, String username, String password) {
		this.ip = serverIP;
		this.username = username;
		this.password = password;
		this.port = port;
	}

	/**
	 * 连接ftp服务器
	 * 
	 * @throws IOException
	 */
	public boolean connectServer() {
		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("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");
			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
	 */
	private boolean isDirExist(String dir) {
		String pwd = "";
		try {
			pwd = ftpClient.pwd();
			ftpClient.cd(dir);
			ftpClient.cd(pwd);
		} catch (Exception e) {
			return false;
		}
		return true;
	}

	/**
	 * 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();
				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("GBK"), "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 {
			dis = new DataInputStream(ftpClient.nameList(this.path + path));
			String filename = "";
			while ((filename = dis.readLine()) != null) {
				list.add(filename);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return list;
	}

	public static void main(String[] args) {
		Test ftp = new Test("118.144.75.18", "womairw", "womairw");
		ftp.connectServer();
		boolean result = ftp.upload(
				"D:/epaySecure.jar",
				"epaySecure.jar");
		System.out.println(result ? "上传成功！" : "上传失败！");
		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
		 */
	}
}