java获取ftp路径怎么写( 二 ) _路径

4.java在浏览器上获取FTP读文件路径问一下，你是想做ftp上传下载么？ 1. 首先你需要安装一个ftp服务端程序，启动起来，然后下载一个ftp客户端程序，测试能不能连接，首先这一块儿需要测试通过。
2. 代码ftp上传下载 2.1 上传代码： import java.io.File; import java.io.FileInputStream; import org.apache.commons.net.ftp.FTPClient; import org.apache.commons.net.ftp.FTPReply; public class test { private FTPClient ftp; /** * * @param path 上传到ftp服务器哪个路径下 * @param addr 地址 * @param port 端口号 * @param username 用户名 * @param password 密码 * @return * @throws Exception */ private boolean connect(String path,String addr,int port,String username,String password) throws Exception { boolean result = false; ftp = new FTPClient(); int reply; ftp.connect(addr,port); ftp.login(username,password); ftp.setFileType(FTPClient.BINARY_FILE_TYPE); reply = ftp.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); return result; } ftp.changeWorkingDirectory(path); result = true; return result; } /** * * @param file 上传的文件或文件夹 * @throws Exception */ private void upload(File file) throws Exception{ if(file.isDirectory()){ ftp.makeDirectory(file.getName()); ftp.changeWorkingDirectory(file.getName()); String[] files = file.list(); for (int i = 0; i < files.length; i++) { File file1 = new File(file.getPath()+"\\"+files[i] ); if(file1.isDirectory()){ upload(file1); ftp.changeToParentDirectory(); }else{ File file2 = new File(file.getPath()+"\\"+files[i]); FileInputStream input = new FileInputStream(file2); ftp.storeFile(file2.getName(), input); input.close(); } } }else{ File file2 = new File(file.getPath()); FileInputStream input = new FileInputStream(file2); ftp.storeFile(file2.getName(), input); input.close(); } } public static void main(String[] args) throws Exception{ test t = new test(); t.connect("", "localhost", 21, "yhh", "yhhazr"); File file = new File("e:\\uploadify"); t.upload(file); } } 2.2 下载代码这里没有用到filter ，如果用filter就可以过滤想要的文件。public class Ftp { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Ftp ftp = new Ftp(); String hostname = ""; Integer port = 21; String username = "username"; String password = "password"; String remote = "/c.txt"; String local = "/home/tin/LeonChen/FTP/"; try { ftp.connect(hostname, port, username, password); System.out.println（"接收状态："+ftp.download(remote, local)); ftp.disconnect(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private FTPClient ftpClient = new FTPClient（)； /* * * 连接到FTP服务器 * * @param hostname 主机名 * * @param port 端口 * * @param username 用户名 * * @param password 密码 * * @return 是否连接成功 * * @throws IOException */ private boolean connect(String hostname, int port, String username, String password) throws IOException { ftpClient.connect(hostname, port); ftpClient.setControlEncoding("UTF-8"); if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode())) { if (ftpClient.login(username, password)) { return true; } } disconnect(); return false； } /* * 从FTP服务器上下载文件，支持断点续传，上传百分比汇报 * * @param remote 远程文件路径 * * @param local 本地文件路径 * * @return 上传的状态 * * @throws IOException */ public DownloadStatus download(String remote, String local) throws IOException { // 设置被动模式 ftpClient.enterLocalPassiveMode（)； // 设置以二进制方式传输 ftpClient.setFileType(FTP.BINARY_FILE_TYPE); DownloadStatus result； // 检查远程文件是否存在 FTPFile[] files = ftpClient.listFiles(new String(remote .getBytes("UTF-8"), "iso-8859-1")); if (files.length != 1) { System.out.println（"远程文件不存在"）； return DownloadStatus.Remote_File_Noexist; } long lRemoteSize = files[0].getSize(); String fildName = files[0].getName（)； // 本地存在文件，进行断点下载 File f = new File(local+fildName); if (f.exists()) { long localSize = f.length(); if (localSize >= lRemoteSize) { System.out.println（"本地文件大于远程文件，下载中止"）； return DownloadStatus.Local_Bigger_Remote； } // 进行断点续传，并记录状态 FileOutputStream out = new FileOutputStream(f, true); ftpClient.setRestartOffset(localSize); InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("UTF-8"), "iso-8859-1")); byte[] bytes = new byte[1024]; long step = lRemoteSize / 100; long process = localSize / step; int c; while ((c = in.read(bytes)) != -1) { out.write(bytes, 0, c); localSize += c; long nowProcess = localSize / step; if (nowProcess > process) { process = nowProcess; if (process % 10 == 0) System.out.println（"下载进度：" +。