listheaders.java

提取http报头和抓取网页练习的workspace.rar GetContent1类是抓取网页功能 ListHeaders类是提取http报头功能

package com.unison.learn.http.wxx.main;

import  java.net.*;   
import  java.util.*;   

public   class  ListHeaders {   
  public   static   void  main(String args[])  throws  Exception {   
    String urlString = new String("http://youxi.zol.com.cn/pc/index4869.html");   
    URL url = new  URL(urlString);   
    URLConnection connection = url.openConnection();  

    Map<String,List<String>> headerFields =   
      connection.getHeaderFields();   
    Set<String> set = headerFields.keySet();

    Iterator itor = set.iterator();   
    while  (itor.hasNext()) {   
      String key = (String) itor.next();   
      System.out.println("Key: "  + key +  " / "  +   
        headerFields.get(key));   
    }   
  }   
}