java实现ftp上传文件夹

招聘 搜索

package comm;

import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.util.StringTokenizer;
import sun.net.ftp.FtpClient;

/**
* ftp上传
* @author colin
* @version 1.0
*
*/
public class Ftp {

private String ip = "";

private String username = "";

private String password = "";

private int port = 21;

private String localFileFullName = "";//需要上传的目录

FtpClient ftpClient = null;

OutputStream os = null;

FileInputStream is = null;

public Ftp(String serverIP, int port , String username, String password) {

  this.ip = serverIP;
  this.username = username;
  this.password = password;
  this.port = port;

}

public Ftp(String serverIP,String username, String password) {

  this.ip = serverIP;
  this.username = username;
  this.password = password;

}

/**
  * 创建文件夹
  * @param dir
  * @param ftpClient
  * @throws Exception
  */
private void createDir(String dir, FtpClient ftpClient) throws Exception {
  ftpClient.ascii();
  StringTokenizer s = new StringTokenizer(dir, "/"); //sign
  s.countTokens();
  String pathName = "";
  while (s.hasMoreElements()) {
   pathName = pathName + "/" + (String) s.nextElement();
   try {
    ftpClient.sendServer("MKD " + pathName + "\r\n");
   } catch (Exception e) {
    e = null;
   }
   ftpClient.readServerResponse();
  }
  ftpClient.binary();

}

/**
  * 检查文件夹是否存在
  * @param dir
  * @param ftpClient
  * @return
  */
private Boolean isDirExist(String dir, FtpClient ftpClient) {
  try {
   ftpClient.cd(dir);
  } catch (Exception e) {

   return false;
  }
  return true;
}

/**
  * ftp上传
  * @param localFileFullName 上传的源文件夹
  * @return
  */
public Boolean upload(String localFileFullName) {
  this.localFileFullName = localFileFullName;
  try {
   String savefilename = new String(localFileFullName.getBytes("ISO-8859-1"), "GBK");
   //新建一个FTP客户端连接
   ftpClient = new FtpClient();
   ftpClient.openServer(this.ip,this.port);
   ftpClient.login(this.username, this.password);
   //打开本地待长传的文件
   File file_in = new File(savefilename);
   processFile(file_in,ftpClient);
   if (is != null) {
    is.close();
   }
   if (os != null) {
    os.close();
   }
   if (ftpClient != null) {
    ftpClient.closeServer();
   }
   return true;
  } catch (Exception e) {
   e.printStackTrace();
   System.err.println("Exception e in Ftp upload(): " + e.toString());
   return false;
  }
 
}

/**
  * 上传文件
  * @param source
  * @param ftpClient
  * @throws Exception
  */
private void processFile(File source,FtpClient ftpClient) throws Exception{
  if (source.exists()) {
   if (source.isDirectory()) {
    if (!isDirExist(source.getPath().substring(localFileFullName.length()).replace("\\", "/"), ftpClient)) {
     createDir(source.getPath().substring(localFileFullName.length()).replace("\\", "/"), ftpClient);
    }
    File sourceFile[] = source.listFiles();
    for (int i = 0; i < sourceFile.length; i++) {
     if (sourceFile[i].exists()) {
      if (sourceFile[i].isDirectory()) {
       this.processFile(sourceFile[i],ftpClient);
      } else {
       ftpClient.cd(cheangPath(sourceFile[i].getPath()));
       ftpClient.binary();
       os = ftpClient.put(sourceFile[i].getName());
       byte[] bytes = new byte[1024];
       is = new FileInputStream(sourceFile[i]);
       //开始复制
       int c;
       //暂未考虑中途终止的情况
       while ((c = is.read(bytes)) != -1) {
        os.write(bytes, 0, c);
       }
       is.close();
       os.close();
      }
     }
    }
   } else {
    ftpClient.cd(cheangPath(source.getPath()));
    ftpClient.binary();
    os = ftpClient.put(source.getName());
    byte[] bytes = new byte[1024];
    is = new FileInputStream(source);
    //开始复制
    int c;
    //暂未考虑中途终止的情况
    while ((c = is.read(bytes)) != -1) {
     os.write(bytes, 0, c);
    }
    is.close();
    os.close();
   }

  } else {
   throw new Exception("此文件或文件夹[" + source.getName() + "]有误或不存在!");
  }

}

/**
  * 获取当前的FTP路径
  * @param path
  * @return
  */
private String cheangPath(String path){
  path = path.substring(localFileFullName.length()).replace("\\", "/");
  if("".equals(path)){
   path = "/";
  }else{
   path = path.substring(0,path.lastIndexOf("/")+1);
  }
  return path;
}

public static void main(String args[]) throws Exception {   
  Ftp ftpup = new Ftp("127.0.0.1",21,"colin","colin");   
  ftpup.upload("E:/test/test");
}
} 

可参考：http://wyz316688.iteye.com/blog/517974