java 抓取网站内容例子2

import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;


public class h2 {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws HttpException 
	 * @throws InterruptedException 
	 */
	public static void main(String[] args) throws HttpException, IOException, InterruptedException 
	{
		 // TODO Auto-generated method stub
		 System.setProperty( "org.apache.commons.logging.Log", "org.apache.commons.logging.impl.NoOpLog" );
		
		/* HttpClient httpClient = new HttpClient();
		 //创建GET方法的实例
		   GetMethod getMethod = new GetMethod("http://www.dianping.com/search/category/1/10/g0r0");
		  
		  //使用系统提供的默认的恢复策略
		  getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
		 
		  getMethod.setRequestHeader( "User-Agent", "ie"); 
		  //getMethod.setRequestHeader( "Accept-Charset", "UTF-8"); 
		  
		  int statusCode = httpClient.executeMethod(getMethod);
		   if (statusCode != HttpStatus.SC_OK) 
		   {
		    System.err.println("Method failed: "+ getMethod.getStatusLine());		      
		   }
		   //读取内容 
		  // byte[] responseBody = getMethod.getResponseBody();
		   //处理内容
		   //System.out.println(new String(responseBody));
		   
		   String s =getMethod.getResponseBodyAsString();
		  // System.out.println(s);
		   //<li class="shopname"><a href="/shop/3990805" class="BL"  title="宝岛新乐园美食总汇" onclick="pageTracker._trackPageview('dp_search_shopname_shanghai');">宝岛新乐园美食总汇</a></li>
		   String regx1="(\\d{1,10})";
		  // String regx2="([\u4E00-\u9FA5]+)";
		  _L1:
		  {	  
		  String regx2="<a href=\"(\\/shop/\\d{1,10})\" class=\"BL\".+?>(.+?)</a>";
		   Pattern pattern3 = Pattern.compile(regx2);
		   Matcher matcher3 = pattern3.matcher(s);
		   System.out.println(matcher3.groupCount());
		   
		   int g[] = null;
		   ArrayList List = new ArrayList();
		   int i =0;
		   while(matcher3.find()) 
		   {
		    
			 System.out.println(i+"-URL:"+matcher3.group(1));		    
			 System.out.println(" "+matcher3.group(2));		    
			 //List.add(matcher3.group()) ;	     
		      i++;
		   }
		  }
		   System.out.println("=====================================");
		  
		   //next
		   //<a href="/search/category/1/10/g10p4/g10" class="NextPage" title="下一页">下一页</a>
		   String regx5="<a href=\"(/search/category/\\d{1,3}/\\d{1,10}/g\\d{1,5}p\\d{1,3}/g\\d{1,3})\" class=\"NextPage\".+?>(.+?)</a>";
		   Pattern pattern5 = Pattern.compile(regx5);
		   Matcher matcher5 = pattern5.matcher(s);
		   System.out.println(matcher5.find());
		   System.out.println(matcher5.groupCount());
		   System.out.println(matcher5.group());
		   System.out.println(matcher5.group(1));
		   System.out.println(matcher5.group(2));	*/	   
		  
		   //list
		   /*for(int y=0;y<List.size();y++)
		   {
			   //System.out.println("list:"+List.get(y));
		   }*/
		  /* System.out.println("=================================");
		   Iterator  it=  List.iterator();
		   while(it.hasNext())
		   {
			   System.out.println("list:"+it.next());
		   }*/
		 h2 hx = new h2();
		 String url ="http://www.dianping.com/search/category/1/10/g0r0";
		 StringBuffer s = hx.getData(url);
		// System.out.println(s);
		 StringBuffer s2 = new StringBuffer("aa");
		 String page ="";
		 int c=0;
		 while(true)
		 //for(int i=0;i<100;i++) 
		 {
			if(!url.equals(""))				
			{
				 hx.printShoplist(s);
				 url = hx.getNext(s);
				 s = hx.getData("http://www.dianping.com"+url);			
				 System.out.println(url);
				// System.out.println(hx.getData(page));
				 c++;
				 //Thread.sleep(1000);
				 System.out.println("count:"+c);
			}else{			 
				System.out.println("工作结束!");
				break;
			}
		 }
		 
		
	}
	
	
	HttpClient httpClient;
	
	public h2()
	{
		 httpClient = new HttpClient();
	}
	//取得页面数据
	public StringBuffer getData(String url) throws IOException
	{
		 //创建GET方法的实例
		   GetMethod getMethod = new GetMethod(url);
		  
		  //使用系统提供的默认的恢复策略
		  getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
		 
		  getMethod.setRequestHeader( "User-Agent", "oprea"); 
		  //getMethod.setRequestHeader( "Accept-Charset", "UTF-8"); 
		  //getMethod.addRequestHeader("referer","a.jsp"); //就这行就好
		  getMethod.setRequestHeader("REMOTE_ADDR", "114.80.166.161");
		  int statusCode = 0;
		try {
			statusCode = httpClient.executeMethod(getMethod);
		} catch (HttpException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		   if (statusCode != HttpStatus.SC_OK) 
		   {
		    System.err.println("Method failed: "+ getMethod.getStatusLine());		      
		   }
		   //读取内容 
		  // byte[] responseBody = getMethod.getResponseBody();
		   //处理内容
		   //System.out.println(new String(responseBody));
		   
		   StringBuffer s =new StringBuffer(getMethod.getResponseBodyAsString());
		   
		   return s;
		
	}
	//取得页面列表数据
	public void printShoplist(StringBuffer s)
	{
		String regx2="<a href=\"(\\/shop/\\d{1,10})\" class=\"BL\".+?>(.+?)</a>";
		   Pattern pattern3 = Pattern.compile(regx2);
		   Matcher matcher3 = pattern3.matcher(s);
		   System.out.println(matcher3.groupCount());
		   
		   int g[] = null;
		   ArrayList List = new ArrayList();
		  int i =0;
		   while(matcher3.find()) 
		   {
		    
			 System.out.println(i+"-URL:"+matcher3.group(1));		    
			 System.out.println(" "+matcher3.group(2));		    
			 //List.add(matcher3.group()) ;	     
		      i++;
		   }
	}
	//取得下一页的地址
	public String getNext(StringBuffer s)
	{
		 String regx5="<a href=\"(/search/category/\\d{1,3}/\\d{1,10}/g\\d{1,5}p\\d{1,3}/g\\d{1,3})\" class=\"NextPage\".+?>(.+?)</a>";
		   Pattern pattern5 = Pattern.compile(regx5);
		   Matcher matcher5 = pattern5.matcher(s);
		  /* System.out.println(matcher5.find());
		   System.out.println(matcher5.groupCount());
		   System.out.println(matcher5.group());
		   System.out.println(matcher5.group(1));
		   System.out.println(matcher5.group(2));	*/
		   if(matcher5.find())
		   {
			   return matcher5.group(1);
		   }else{
			   return "";
		   }
	}

}