java ftp简单上传下载
使用 sun.net.ftp.FtpClient 实现文件的上传下载（只能针对文件）一、下载
import java.io.DataInputStream;import java.io.File;import java.io.IOException;import java.io.RandomAccessFile;import sun.net.TelnetInputStream;import sun.net.ftp.FtpClient;public class ftpDown {public ftpDown() {}public static void main(String[] args) {try {FtpClient fc = new FtpClient("ftp.xx.com");fc.login("test", "test");int ch;File fi = new File("d:\\index.html");RandomAccessFile getFile = new RandomAccessFile(fi, "rw");getFile.seek(0);TelnetInputStream fget = fc.get("inde.html");DataInputStream puts = new DataInputStream(fget);while ((ch = puts.read()) >= 0) {getFile.write(ch);}fget.close();getFile.close();fc.closeServer();} catch (IOException ex) {ex.printStackTrace();}}}
二 上传
import java.io.FileInputStream;import java.io.IOException;import sun.net.TelnetOutputStream;import sun.net.ftp.FtpClient;public class TestFtpClient {/** * @param args */public static void main(String[] args) {// TODO 自动生成方法存根FtpClient ftpClient;String server = "localhost";String user = "user";String password = "password";String path = "/home/user/file";String filename = "sourcefile.txt";try {// server：FTP服务器的IP地址；user:登录FTP服务器的用户名// password：登录FTP服务器的用户名的口令；path：FTP服务器上的路径ftpClient = new FtpClient();ftpClient.openServer(server);ftpClient.login(user, password);// path是ftp服务下主目录的子目录if (path.length() != 0)ftpClient.cd(path);// 用2进制上传ftpClient.binary();TelnetOutputStream os = null;FileInputStream is = null;try {// "descfile.txt"用ftp上传后的新文件名os = ftpClient.put("descfile.txt");java.io.File file_in = new java.io.File(filename);if (file_in.length() == 0) {throw new Exception("上传文件为空!");}is = new FileInputStream(file_in);byte[] bytes = new byte;int c;while ((c = is.read(bytes)) != -1) {os.write(bytes, 0, c);}} finally {if (is != null) {is.close();}if (os != null) {os.close();}}System.out.println("上传文件成功!");} catch (Exception e) {e.printStackTrace();}}}
参考文章：
http://www.diybl.com/course/3_program/java/javajs/200822/98380.html
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