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WebParamCrawler.java：源码内容
							package chapter2;
import java.io.*;
import java.net.*;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
public class WebParamCrawler { 
private static String Text_File_Path = "D:\workshop\ch2\htmlsrc.html";
private static String urllist_File_Path = "D:\workshop\ch2\urllist.txt";
 public static void main(String[] args) throws IOException {
        try { 
        	String s;
        	String dnsname;
            //char[] cBuffer = new char[8096*2]; 
			File file = new File(Text_File_Path);
			FileWriter fpWriter = new FileWriter(file);
	    	BufferedReader brList = new BufferedReader(new FileReader(urllist_File_Path));
	    	while ((s = brList.readLine()) != null) { //判断是否读到了最后一行 
	    	    System.out.println(s);
	    	    
	    	    //dnsname = s.substring( s.indexOf(ch, fromIndex))
	            // 生成下载对象
	            Socket webclient = new Socket("www.bnu.edu.cn", 80); 
	            PrintWriter result = new PrintWriter(webclient.getOutputStream(), true); 
	            BufferedReader receiver = new BufferedReader(new InputStreamReader(webclient.getInputStream()));
	            //发送HTTP request请求
	            result.println("GET / HTTP/1.1"); 
	            result.println("Host: bnu.edu.cn"); 
	            result.println("Connection: Close"); 
	            result.println();
	            
	            //接收HTTP Response 返回的结果信息        
	            boolean bRet = true;
	            StringBuffer sBuffer = new StringBuffer(8096); 
	            while (bRet) { 
	               if (receiver.ready()) {
	                 int idx = 0;
	                 while (idx != -1) {
	                 	idx = receiver.read();
	                 	if(idx == '<')
	                 		break;
	                 }
	                 while (idx != -1) {
	                 	sBuffer.append((char) idx);
	                 	idx = receiver.read();
	                 }
	                 bRet = false; 
	             } 
	           }
	            
	           // 显示获得的网页正文，打印到控制台  
	           System.out.println(sBuffer.toString());
	           fpWriter.write(sBuffer.toString());	    	    
	           webclient.close();	    	    
	    	 }
	    	brList.close();
          fpWriter.close();
       } catch (UnknownHostException e) {
            System.err.println("无法访问指定主机."); 
            //System.exit(1);
       } catch (IOException e) { 
           System.err.println("下载失败，请检查输入地址是否正确。");  
           //System.exit(1);
       } 
  }
 
}

						