这个工具比较简单，用于配合另外一个工具进行文件传送,废话少说，上代码

import java.net.URL; import java.net.URLConnection; import java.io.File; import java.io.InputStream; import java.io.FileOutputStream; import java.io.FileNotFoundException; import java.io.IOException;  import org.apache.COMmons.io.FileUtils;  public class HttpUtil{     PRivate String httppath = "";      public void setHttpPath(String httppath){         this.httppath = httppath;     }      public String getHttpPath(){         return this.httppath;     }      public HttpUtil(String httppath){         this.httppath = httppath;     }      public InputStream getStream(String url){         InputStream inStream = null;         try{             URL httpurl = new URL(url);             URLConnection conn = httpurl.oPEnConnection();             inStream = conn.getInputStream();         }catch (Exception e){             e.printStackTrace();             return null;         }         return inStream;     }      public int downLoad(String url,String localName ,int lines) throws FileNotFoundException, IOException{         FileOutputStream fos = null;         InputStream inStream = null;         int ret = 0;         try{             URL httpurl = new URL(url);             URLConnection conn = httpurl.openConnection();             inStream = conn.getInputStream();             fos = new FileOutputStream(localName);             byte[] b = new byte[102400];             int j = 0;             while(inStream.read(b) != -1 && lines > 0){                 for(int i = j; i < b.length; i++){                     if(b[i] == 'n'){                         fos.write(b, j, i - j + 1);                         lines--;                         if(lines <= 0){                             break;                         }                         j = i + 1;                         continue;                     }                 }             }         }catch (Exception e){             e.printStackTrace();             ret = -1;         }finally {             fos.close();             inStream.close();             return ret;         }     }      public static void main(String[] args){         String httppath = "";         int lines = 0;         String localName = "";         try{             httppath = args[0];             localName = args[1];             lines = Integer.parseint(args[2]);         }catch (Exception e){             e.printStackTrace();             return;         }         try{             HttpUtil hu = new HttpUtil(httppath);             hu.downLoad(hu.getHttpPath(),localName ,lines);         }catch (Exception e){             e.printStackTrace();         }     } } 

这个工具实现了从HTTP服务器上下载指定行数的文件，并且不会因为编码的问题引起下载的文件内容乱码
三个工具已经搞定，下一次就是把这三个工具结合起来将HTTP、FTP的文件转移到HDFS上

hadoop工具
ftp工具