ftp服务器和sftp服务器

首先，ftp跟sftp是一种传输协议，一种安全，一种不安全。其中经过实践发现要有相对于的服务器才能实现上传跟下载，不能混淆使用。
windows中ftp服务器的建立方法：第一种：系统自带的ftp
开启服务：
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建立ftp，映射地址和文件夹

新建用户和密码访问ftp

贴上java类的测试代码：

package com.test;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;public class FileTool {  /** * Description: 向FTP服务器上传文件 * @Version      1.0 * @param url FTP服务器hostname * @param port  FTP服务器端口 * @param username FTP登录账号 * @param password  FTP登录密码 * @param path  FTP服务器保存目录 * @param filename  上传到FTP服务器上的文件名 * @param input   输入流 * @return 成功返回true，否则返回false * */  public static boolean uploadFile(String url,// FTP服务器hostname  int port,// FTP服务器端口  String username, // FTP登录账号  String password, // FTP登录密码  String path, // FTP服务器保存目录  String filename, // 上传到FTP服务器上的文件名  InputStream input // 输入流  ){  boolean success = false;  FTPClient ftp = new FTPClient();  ftp.setControlEncoding("GBK");  try {  int reply;  ftp.connect(url, port);// 连接FTP服务器  // 如果采用默认端口，可以使用ftp.connect(url)的方式直接连接FTP服务器  ftp.login(username, password);// 登录  reply = ftp.getReplyCode();  if (!FTPReply.isPositiveCompletion(reply)) {  ftp.disconnect();  return success;  }  ftp.setFileType(FTPClient.BINARY_FILE_TYPE);  ftp.makeDirectory(path);  ftp.changeWorkingDirectory(path);  ftp.storeFile(filename, input);  input.close();  ftp.logout();  success = true;  } catch (IOException e) {  e.printStackTrace();  } finally {  if (ftp.isConnected()) {  try {  ftp.disconnect();  } catch (IOException ioe) {  }  }  }  return success;  }  /** * 将本地文件上传到FTP服务器上 * */  public static void upLoadFromProduction(String url,// FTP服务器hostname  int port,// FTP服务器端口  String username, // FTP登录账号  String password, // FTP登录密码  String path, // FTP服务器保存目录  String filename, // 上传到FTP服务器上的文件名  String orginfilename // 输入流文件名  ) {  try {  FileInputStream in = new FileInputStream(new File(orginfilename));  boolean flag = uploadFile(url, port, username, password, path,filename, in);  System.out.println(flag);  } catch (Exception e) {  e.printStackTrace();  }  }  //测试  public static void main(String[] args) {  upLoadFromProduction("127.0.0.1", 21, "cl", "123456", "/", "gggg.txt", "E:/错误日志.txt");  }  
}

第二种：利用Apache的ftp，下载地址：https://download.csdn.net/download/qq_35807697/10358750
修改两个配置文件
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启动命令：
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java测试代码

package com.test;import it.sauronsoftware.ftp4j.FTPClient;  
import java.security.SecureRandom;  
import java.security.cert.X509Certificate;  
import javax.net.ssl.SSLContext;  
import javax.net.ssl.SSLSocketFactory;  
import javax.net.ssl.TrustManager;  
import javax.net.ssl.X509TrustManager; public class Ftp4jTest {  public static void main(String[] args) {  try {  TrustManager[] trustManager = new TrustManager[] { new X509TrustManager() {  public X509Certificate[] getAcceptedIssuers() {  return null;  }  public void checkClientTrusted(X509Certificate[] certs,  String authType) {  }  public void checkServerTrusted(X509Certificate[] certs,  String authType) {  }  } };  SSLContext sslContext = null;  sslContext = SSLContext.getInstance("SSL");  //sslContext = SSLContext.getDefault();  sslContext.init(null, trustManager, new SecureRandom());  SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();  FTPClient client = new FTPClient();  client.setSSLSocketFactory(sslSocketFactory);  client.setSecurity(FTPClient.SECURITY_FTPES);   client.connect("127.0.0.1", 22);  client.login("cl", "123456");  System.out.println(client.toString());  System.out.println(client.currentDirectory());  } catch (Exception e) {  e.printStackTrace();  }  }  
}

第三种：安装sftp服务器，下载地址：https://download.csdn.net/download/xx5595480/9406498
下载软件，然后就是安装完成配置服务器。
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java测试代码：

package com.test;import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Vector;import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;public class SFTPProcessor {private static Session session = null;private static ChannelSftp channel = null;public static ChannelSftp getConnect() {/*String ftpHost = "192.168.100.120";String port = "21";String ftpUserName = "ftptest";String ftpPassword = "ftptest";*/String ftpHost = "192.168.100.120";String port = "22";String ftpUserName = "ftptest";String ftpPassword = "ftptest";//默认的端口22 此处我是定义到常量类中；int ftpPort = 22;//判断端口号是否为空，如果不为空，则赋值if (port != null && !port.equals("")) {ftpPort = Integer.valueOf(port);}JSch jsch = new JSch(); // 创建JSch对象// 按照用户名,主机ip,端口获取一个Session对象try {session = jsch.getSession(ftpUserName, ftpHost, ftpPort);if (ftpPassword != null) {session.setPassword(ftpPassword); // 设置密码}String ftpTO="20000";if (!(ftpTO==null||"".equals(ftpTO))) {int ftpTimeout=Integer.parseInt(ftpTO);session.setTimeout(ftpTimeout); // 设置timeout时候}//并且一旦计算机的密匙发生了变化，就拒绝连接。session.setConfig("StrictHostKeyChecking", "no");//默认值是 “yes” 此处是由于我们SFTP服务器的DNS解析有问题，则把UseDNS设置为“no”session.setConfig("UseDNS", "no");session.connect(); // 经由过程Session建树链接channel = (ChannelSftp) session.openChannel("sftp"); // 打开SFTP通道channel.connect(); // 建树SFTP通道的连接} catch (JSchException e) {// TODO Auto-generated catch blocke.printStackTrace();}return channel;}public static void closeChannel() throws Exception {try {if (channel != null) {channel.disconnect();}if (session != null) {session.disconnect();}} catch (Exception e) {throw new Exception( "close ftp error.");}}public static void uploadFile(String localFile, String newName, String remoteFoldPath) throws Exception{InputStream input = null;try {input = new FileInputStream(new File(localFile));// 改变当前路径到指定路径 channel.cd(remoteFoldPath);channel.put(input, newName);} catch (Exception e) {throw new Exception( "Upload file error.");} finally {if (input != null) {try {input.close();} catch (IOException e) {throw new Exception("Close stream error.");}}}}public void downloadFile(String remoteFile, String remotePath, String localFile) throws Exception {OutputStream output = null;File file = null;try {file = new File(localFile);if (!checkFileExist(localFile)) {file.createNewFile();}output = new FileOutputStream(file);channel.cd(remotePath);channel.get(remoteFile, output);} catch (Exception e) {throw new Exception("Download file error.");} finally {if (output != null) {try {output.close();} catch (IOException e) {throw new Exception("Close stream error.");}}}}@SuppressWarnings("unchecked")public Vector listFiles(String remotePath) throws Exception {Vector vector = null;try {vector = channel.ls(remotePath);} catch (SftpException e) {throw new Exception("list file error.");}return vector;}private boolean checkFileExist(String localPath) {File file = new File(localPath);return file.exists();}public static void main(String[] args) throws Exception {SFTPProcessor ftpUtil = new SFTPProcessor();System.out.println("开始连接");ChannelSftp channeltest = ftpUtil.getConnect();System.out.println("开始连接");System.out.println(channeltest.isConnected());ftpUtil.downloadFile("cussplus_3.5.0.1.zip.001", "/opt/applog/msiUpdate/Kiosk/3.7/COMMON/PEK", "E:\\projectTest\\downloadPath\\cussplus_3.5.0.1.zip.001");ftpUtil.closeChannel();System.out.println(channeltest.isConnected());System.out.println("结束连接连接");}
}