使用apathe包實(shí)現(xiàn)ftp上傳下載.doc

下載jar包.ftp. 代碼如下：上傳：JSP： 文件上傳 文件位置： SERVLET：package com.test;import java.io.FileOutputStream;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class UploadServletA extends HttpServlet private static final long serialVersionUID = 1L;public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException tryrequest.setCharacterEncoding(utf-8);response.setCharacterEncoding(UTF-8); response.setContentType(text/html; charset=UTF-8); String myFile = request.getParameter(mfile); /獲取頁面提交的文件int indexOf = myFile.lastIndexOf(); /獲取最后一個“/”所在的索引位String fileName = myFile.substring(indexOf); /獲取文件上傳的文件名/創(chuàng)建輸出流把指定的文件寫入WEB工程的upload目錄下(需要在WebRoot目錄下創(chuàng)建upload目錄)。FileOutputStream fos = new FileOutputStream(d:upload + fileName);/創(chuàng)建輸入流讀取指定文件java.io.FileInputStream fis = new java.io.FileInputStream(new java.io.File(myFile);byte buffer = new byte256;int len = 0;while (len = fis.read(buffer) 0) /循環(huán)讀取文件到輸出流fos.write(buffer, 0, len); /使用輸出流輸出文件。fos.flush();fis.close();fos.close(); PrintWriter pw=response.getWriter(); pw.println(); pw.println(); pw.println(); pw.println(); pw.println(alert(上傳成功！); pw.println(); pw.println(); pw.println(); pw.println();catch(Exception e)e.printStackTrace();PrintWriter pw=response.getWriter(); pw.println(); pw.println(); pw.println(); pw.println(); pw.println(alert(上傳失??！); pw.println(); pw.println(); pw.println(); pw.println();public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException doPost(request, response);下載JSP: base href= 文件下載 !- 請點(diǎn)擊文件名下載！ 中文.txt SERVLET:package com.test;import java.io.File;import java.io.IOException;import .URLEncoder;import javax.servlet.ServletException;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import .ftp.FTPClient;import .ftp.FTPClientConfig;import .ftp.FTPFile;import .ftp.FTPReply;/* * * author kfzx-zhouy05 */public class FtpDownloadServlet extends HttpServlet private static final long serialVersionUID = 1L;public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException doPost(request, response);public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException request.setCharacterEncoding(utf-8);response.setCharacterEncoding(UTF-8); response.setContentType(text/html; charset=UTF-8);String path = upload;File f2 = new File(upload中文.txt);String filename2 = f2.getName();ServletOutputStream outputStream = response.getOutputStream();downFile(6, 21, zhouyun0243, zhouyun0243, path,filename2, outputStream, response);public void init() throws ServletException public static void downFile(String ip, int port, String username,String password, String remotePath, String fileName,ServletOutputStream outputStream, HttpServletResponse response) FTPClient ftp = new FTPClient();int count = 0;try int reply;ftp.connect(ip, port);/ 下面三行代碼必須要，而且不能改變編碼格式 ftp.setControlEncoding(UTF-8);FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);conf.setServerLanguageCode(zh);/ 如果采用默認(rèn)端口，可以使用ftp.connect(url) 的方式直接連接FTP服務(wù)器 ftp.login(username, password);/ 登錄 ftp.setFileType(FTPClient.BINARY_FILE_TYPE);reply = ftp.getReplyCode();if (FTPReply.isPositiveCompletion(reply) System.out.println(連接服務(wù)器失敗);outputStream.println();outputStream.println();outputStream.println(alert(Connect server fail!);outputStream.println(document.location.href=http:/localhost:8080/struts2HibernateSpring/download.jsp);outputStream.println();outputStream.println();outputStream.close();ftp.disconnect();return;System.out.println(登陸成功。);ftp.changeWorkingDirectory(remotePath);/ 轉(zhuǎn)移到FTP服務(wù)器目錄 FTPFile fs = ftp.listFiles(); / 得到目錄的相應(yīng)文件列表 for (int i = 0; i fs.length; i+) FTPFile ff = fsi;if (ff.getName().equals(fileName) count+;String filename = fileName;/ 這個就就是彈出下載對話框的關(guān)鍵代碼 response.setHeader(Content-disposition,attachment;filename=+ URLEncoder.encode(filename, UTF-8);/ 將文件保存到輸出流outputStream中 ftp.retrieveFile(new String(ff.getName().getBytes(UTF-8),ISO-8859-1), outputStream);outputStream.flush();if (count = 1) /下載成功outputStream.close();ftp.logout();ftp.disconnect(); else /文件找不到outputStream.println();outputStream.println();outputStream.println(alert(File is not exist!);outputStream.println(document.location.href=http:/localhost:8080/struts2HibernateSpring/download.jsp);outputStream.println();outputStream.println();outputStream.close();ftp.logout();ftp.disconnect(); catch (Exception e) e.printStackTrace();try outputStream.println();outputStream.println();outputStream.println(alert(