JAVA FTP 上传文件
下面展示通过http 方式上传文件到服务器:
/**
- 文件上传接口
- @param request【module】【filename】
- @param response
@throws IOException */
@RequestMapping("/upload")
br/>*/
@RequestMapping("/upload")
String module=params.get("module");//请求模块,根据模块请求的文件放到不通目录
log.info("upload method param:"+module);
if (!validPublicModule(module)) {
ReponseUtils.renderJsonp(request, response, RespObj.failedObj("上传目录不正确"));
return;
}
//打开连接FTP
FtpUtils ftp=FtpUtils.getInstance();
InputStream input = null;
if(filename != null){
log.info("ftp opern sucess:");
String newFileName=newfileName(filename);
input=filename.getInputStream();
String ftppath=getDirPath(module) ;
Boolean isfalg=ftp.uploadFile(input, newFileName, ftppath);
if(!isfalg){
ReponseUtils.renderJsonp(request, response, RespObj.failedObj("文件上传异常"));
return;
}
RespObj obj = RespObj.successObj();
String url=ftppath+File.separator+newFileName;
log.info("ftp url:"+url);
obj.setData(url);
obj.setErrorMsg("sucess");
ReponseUtils.renderJsonp(request, response, obj);
}
}FTP 工具类: package com.ejauto.core.ftp;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.log4j.Logger;
import com.ejauto.core.utils.Constants;
public class FtpUtils {
Logger log = Logger.getLogger(FtpUtils.class);private FTPClient ftpClient = null;private String server;private int port;private String userName;private String userPassword;private FtpUtils(String server,int port,String userName,String userPassword) { this.server = server; this.port = port; this.userName = userName; this.userPassword = userPassword;}/** * 连接服务器 * @return 连接成功与否 true:成功, false:失败 */public boolean open() { if (ftpClient != null && ftpClient.isConnected()) { return true; } try { ftpClient = new FTPClient(); // 连接 ftpClient.connect(this.server, this.port); ftpClient.login(this.userName, this.userPassword); setFtpClient(ftpClient); // 检测连接是否成功 int reply = ftpClient.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { this.close(); System.err.println("FTP server refused connection."); //System.exit(1); } log.info("open FTP success:" + this.server + ";port:" + this.port + ";name:" + this.userName + ";pwd:" + this.userPassword); ftpClient.setFileType(FTP.BINARY_FILE_TYPE); // 设置上传模式.binally or ascii return true; } catch (Exception ex) { this.close(); ex.printStackTrace(); return false; }}/** * 切换到父目录 * @return 切换结果 true:成功, false:失败 */@SuppressWarnings("unused")private boolean changeToParentDir() { try { return ftpClient.changeToParentDirectory(); } catch (IOException e) { e.printStackTrace(); return false; }}/** * 改变当前目录到指定目录 * @param dir 目的目录 * @return 切换结果 true:成功,false:失败 */@SuppressWarnings("unused")private boolean cd(String dir) { try { return ftpClient.changeWorkingDirectory(dir); } catch (IOException e) { e.printStackTrace(); return false; }}/** * 获取目录下所有的文件名称 * * @param filePath 指定的目录 * @return 文件列表,或者null */@SuppressWarnings("unused")private FTPFile[] getFileList(String filePath) { try { return ftpClient.listFiles(filePath); } catch (IOException e) { e.printStackTrace(); return null; }}/** * 层层切换工作目录 * @param ftpPath 目的目录 * @return 切换结果 */public boolean changeDir(String ftpPath) { if (!ftpClient.isConnected()) { return false; } try { // 将路径中的斜杠统一 char[] chars = ftpPath.toCharArray(); StringBuffer sbStr = new StringBuffer(256); for (int i = 0; i < chars.length; i++) { if ('\\' == chars[i]) { sbStr.append('/'); } else { sbStr.append(chars[i]); } } ftpPath = sbStr.toString(); if (ftpPath.indexOf('/') == -1) { // 只有一层目录 ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1")); } else { // 多层目录循环创建 String[] paths = ftpPath.split("/"); for (int i = 0; i < paths.length; i++) { ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1")); } } return true; } catch (Exception e) { e.printStackTrace(); return false; }}/** * 循环创建目录,并且创建完目录后,设置工作目录为当前创建的目录下 * @param ftpPath 需要创建的目录 * @return */public boolean mkDir(String ftpPath) { if (!ftpClient.isConnected()) { return false; } try { // 将路径中的斜杠统一 char[] chars = ftpPath.toCharArray(); StringBuffer sbStr = new StringBuffer(256); for (int i = 0; i < chars.length; i++) { if ('\\' == chars[i]) { sbStr.append('/'); } else { sbStr.append(chars[i]); } } ftpPath = sbStr.toString(); if (ftpPath.indexOf('/') == -1) { // 只有一层目录 ftpClient.makeDirectory(new String(ftpPath.getBytes(), "iso-8859-1")); ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1")); } else { // 多层目录循环创建 String[] paths = ftpPath.split("/"); for (int i = 0; i < paths.length; i++) { ftpClient.makeDirectory(new String(paths[i].getBytes(), "iso-8859-1")); ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1")); } } return true; } catch (Exception e) { e.printStackTrace(); return false; }}/** * 上传文件到FTP服务器 * @param localDirectoryAndFileName 本地文件目录和文件名 * @param ftpFileName 上传到服务器的文件名 * @param ftpDirectory FTP目录如:/path2/pathb2/,如果目录不存在会自动创建目录 * @return */public boolean uploadFile(InputStream fis, String ftpFileName, String ftpDirectory) { if (!ftpClient.isConnected()) { return false; } boolean flag = false; if (ftpClient != null) { //File srcFile = new File(localDirectoryAndFileName); //InputStream fis = null; try { //fis = new InputStream(srcFile); // 创建目录 this.mkDir(ftpDirectory); ftpClient.setBufferSize(100000); ftpClient.setControlEncoding("UTF-8"); // 设置文件类型(二进制) ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE); ftpClient.enterLocalPassiveMode(); // 上传 log.error("ftpClient.storeFile:"); flag = ftpClient.storeFile(new String(ftpFileName.getBytes("UTF-8"),"iso-8859-1"), fis); } catch (Exception e) { this.close(); e.printStackTrace(); log.error("Exception:"+e.getMessage()); return false; } finally { try { fis.close(); } catch (IOException e) { e.printStackTrace(); } } } return flag;}/** * 从FTP服务器上下载文件 * @param ftpDirectoryAndFileName ftp服务器文件路径,以/dir形式开始 * @param localDirectoryAndFileName 保存到本地的目录 * @return */public boolean get(String ftpDirectoryAndFileName, String localDirectoryAndFileName) { if (!ftpClient.isConnected()) { return false; } ftpClient.enterLocalPassiveMode(); // Use passive mode as default try { // 将路径中的斜杠统一 char[] chars = ftpDirectoryAndFileName.toCharArray(); StringBuffer sbStr = new StringBuffer(256); for (int i = 0; i < chars.length; i++) { if ('\\' == chars[i]) { sbStr.append('/'); } else { sbStr.append(chars[i]); } } ftpDirectoryAndFileName = sbStr.toString(); String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/")); String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1); this.changeDir(filePath); ftpClient.retrieveFile(new String(fileName.getBytes(), "iso-8859-1"), new FileOutputStream(localDirectoryAndFileName)); // download // file //System.out.println(ftpClient.getReplyString()); // check result //System.out.println("从ftp服务器上下载文件:" + ftpDirectoryAndFileName + ", 保存到:" + localDirectoryAndFileName); return true; } catch (IOException e) { e.printStackTrace(); return false; }}/** * 返回FTP目录下的文件列表 * @param pathName * @return */public String[] getFileNameList(String pathName) { try { return ftpClient.listNames(pathName); } catch (IOException e) { e.printStackTrace(); return null; }}/** * 删除FTP上的文件 * @param ftpDirAndFileName 路径开头不能加/,比如应该是test/filename1 * @return */public boolean deleteFile(String ftpDirAndFileName) { if (!ftpClient.isConnected()) { return false; } try { return ftpClient.deleteFile(ftpDirAndFileName); } catch (IOException e) { e.printStackTrace(); return false; }}/** * 删除FTP目录 * @param ftpDirectory * @return */public boolean deleteDirectory(String ftpDirectory) { if (!ftpClient.isConnected()) { return false; } try { return ftpClient.removeDirectory(ftpDirectory); } catch (IOException e) { e.printStackTrace(); return false; }}/** * 关闭链接 */public void close() { try { if (ftpClient != null && ftpClient.isConnected()) { ftpClient.disconnect(); } System.out.println("成功关闭连接,服务器ip:" + this.server + ", 端口:" + this.port); } catch (Exception e) { e.printStackTrace(); }}public FTPClient getFtpClient() { return ftpClient;}public void setFtpClient(FTPClient ftpClient) { this.ftpClient = ftpClient;}public void download(HttpServletResponse response,String ftpDirectoryAndFileName){ if (!ftpClient.isConnected()) { return ; } ftpClient.enterLocalPassiveMode(); // Use passive mode as default try { // 将路径中的斜杠统一 char[] chars = ftpDirectoryAndFileName.toCharArray(); StringBuffer sbStr = new StringBuffer(256); for (int i = 0; i < chars.length; i++) { if ('\\' == chars[i]) { sbStr.append('/'); } else { sbStr.append(chars[i]); } } ftpDirectoryAndFileName = sbStr.toString(); String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/")); String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1); this.changeDir(filePath); InputStream inputStream = ftpClient.retrieveFileStream(new String(fileName.getBytes(), "iso-8859-1")); ServletOutputStream outputStream = null; try { response.setHeader("content-disposition", "attachment;filename="+fileName); //通知浏览器下载文件类型,解决部分浏览器下载APK为.htm格式 response.setContentType("application/octet-stream"); outputStream = response.getOutputStream(); byte[] buffer = new byte[8192]; int len = inputStream.read(buffer); while (len != -1) { outputStream.write(buffer, 0, len); len = inputStream.read(buffer); } outputStream = response.getOutputStream(); ByteArrayOutputStream swapStream = new ByteArrayOutputStream(); byte[] buff = new byte[100]; int rc = 0; while ((rc = inputStream.read(buff, 0, 100)) > 0) { swapStream.write(buff, 0, rc); } byte[] in2b = swapStream.toByteArray(); outputStream.write(in2b); } catch (IOException e) { e.printStackTrace(); } finally { try { if(inputStream!=null){ inputStream.close(); } if(outputStream!=null){ outputStream.flush(); outputStream.close(); } } catch (IOException e) { e.printStackTrace(); } } }catch(Exception e){ log.info(e.getMessage()); e.printStackTrace(); }}
public void downloadImg(HttpServletResponse response,String ftpDirectoryAndFileName){
if (!ftpClient.isConnected()) { return ; } ftpClient.enterLocalPassiveMode(); // Use passive mode as default try { // 将路径中的斜杠统一 char[] chars = ftpDirectoryAndFileName.toCharArray(); StringBuffer sbStr = new StringBuffer(256); for (int i = 0; i < chars.length; i++) { if ('\\' == chars[i]) { sbStr.append('/'); } else { sbStr.append(chars[i]); } } ftpDirectoryAndFileName = sbStr.toString(); String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/")); String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1); this.changeDir(filePath); InputStream inputStream = ftpClient.retrieveFileStream(new String(fileName.getBytes(), "iso-8859-1")); ServletOutputStream outputStream = null; try { outputStream = response.getOutputStream(); byte[] buffer = new byte[8192]; int len = inputStream.read(buffer); while (len != -1) { outputStream.write(buffer, 0, len); len = inputStream.read(buffer); } outputStream = response.getOutputStream(); ByteArrayOutputStream swapStream = new ByteArrayOutputStream(); byte[] buff = new byte[100]; int rc = 0; while ((rc = inputStream.read(buff, 0, 100)) > 0) { swapStream.write(buff, 0, rc); } byte[] in2b = swapStream.toByteArray(); outputStream.write(in2b); } catch (IOException e) { e.printStackTrace(); } finally { try { if(inputStream!=null){ inputStream.close(); } if(outputStream!=null){ outputStream.flush(); outputStream.close(); } } catch (IOException e) { e.printStackTrace(); } } }catch(Exception e){ log.info(e.getMessage()); e.printStackTrace(); }}public boolean upload(InputStream fis, String ftpDirectory){ String ftpFileName = ftpDirectory.substring(ftpDirectory.indexOf("/")); return uploadFile(fis, ftpFileName, ftpDirectory);}public static FtpUtils getInstance(){ String host = Constants.FTP_HOST; int port = Integer.valueOf(Constants.FTP_PORT).intValue(); String user = Constants.FTP_USERNAME; String pwd = Constants.FTP_PWD; FtpUtils f = new FtpUtils(host, port, user, pwd); if(f.open()){ return f; } return null;}public static void main(String[] args) { FileInputStream input = null; FtpUtils f=FtpUtils.getInstance();}
public String getFilePath(HttpServletResponse response,String fileName) throws IOException{
if (!ftpClient.isConnected()) { return ""; } ftpClient.enterLocalPassiveMode(); // Use passive mode as default ftpClient.getPassiveLocalIPAddress(); System.out.println("getPassiveLocalIPAddress:"+ftpClient.getLocalAddress()); String url="ftp://"+ftpClient.getLocalAddress()+File.separator+fileName;//拼接ftp 路径 return url;}
}