Java开发网 - JAVA中如何执行FTP命令?

Topic: JAVA中如何执行FTP命令?

1.JAVA中如何执行FTP命令?	Copy to clipboard
Posted by: wangfeng7838 Posted on: 2004-11-23 13:20 请问高手,如何在JAVA中执行FTP协议中的命令?急,谢了先!

2.Re:JAVA中如何执行FTP命令? [Re: wangfeng7838]	Copy to clipboard
Posted by: wangfeng7838 Posted on: 2004-11-23 13:21

3.Re:JAVA中如何执行FTP命令? [Re: wangfeng7838]	Copy to clipboard
Posted by: Jove Posted on: 2004-11-23 13:39 了解FTP协议，直接操作套接字或找个现成lib，如 http://jakarta.apache.org/commons/net/

4.Re:JAVA中如何执行FTP命令? [Re: wangfeng7838]	Copy to clipboard
Posted by: jameszhang Posted on: 2004-11-23 15:27 sun.net.ftp.FtpClient

5.Re:JAVA中如何执行FTP命令? [Re: wangfeng7838]

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Posted by: Lawme
Posted on: 2004-11-23 16:53

Java FTP 的关键是建立 URL 时的语法。本例中是这句：

URL url = new URL(args[1]);

这里的 args[1] 结构必须为：

ftp:// user : password @ FtpUrl

例如：
ftp://someone:m3j4v8@dongfang.com/pages/index.html

以下是段 FTP 上传文件的代码：


import java.io.*;
import java.net.*;

public class FtpUpload {

public static void main(String[] args) throws Exception {

  if(args.length < 2){
     System.out.println("\n用法：java UrlUp <源文件名> <目标文件名>\n");
     return;
  }  

  int n1,n2,n3;
  String s = args[0];
  
  n1 = s.indexOf(".htm");
  n2 = s.indexOf(".html");
  n3 = s.indexOf(".txt");
  
  if( ( n1 + n2 + n3 ) > -3 ){   // 源文件是文本文件

    BufferedReader in = new BufferedReader(new FileReader(args[0]));

    URL url = new URL(args[1]);
    URLConnection connection = url.openConnection();
    connection.setDoOutput(true);

    PrintWriter out = new PrintWriter( connection.getOutputStream());
  
    String inputLine;
    while ((inputLine = in.readLine()) != null) 
       out.write(inputLine+"\n");
       
    in.close();
    out.close();
  }
  else{   // 源文件是非文本的，如图像、声音等
  
  File bin = new File(args[0]);
  long size = bin.length();
  byte[] buffer = new byte[(int)size];
    
  FileInputStream in = new FileInputStream(args[0]);
  in.read(buffer);

  URL url = new URL(args[1]);
  URLConnection connection = url.openConnection();
  connection.setDoOutput(true);

  OutputStream out = connection.getOutputStream();
  out.write(buffer);
       
  in.close();
  out.close();

  }

 }
}