httprequest.java

《Java TCP/IP应用开发详解》的部分源程序,开发环境为ECLIPSE3.1

package section18;

import java.util.LinkedList;
import java.util.List;

public class HTTPRequest {
    
	List lines=new LinkedList();
	public HTTPRequest() {
		super();
		// TODO Auto-generated constructor stub
	}

	public void addLine(String line)
	{
		lines.add(line);
	}
	
	boolean isGetRequest()
	{
		if(lines.size()>0)
		{
			String firstLine=(String)lines.get(0);
			if(firstLine.length()>0)
				  if(firstLine.substring(0,3).equalsIgnoreCase("GET"))
					  return true;
			
		}
		return false;
	}

    String getFileName()
    {
    	if(lines.size()>0)
    	{
    		String firstLine=(String)lines.get(0);
    		String fileName=firstLine.substring(firstLine.indexOf(" ")+1);
    		int n=fileName.indexOf(" ");
    		if(n!=-1)fileName=fileName.substring(0,n);
    		try{
    			if(fileName.charAt(0)=='/')fileName=fileName.substring(1);
    		}
    		catch(StringIndexOutOfBoundsException ex){}
    		if(fileName.equals(""))fileName="index.htm";
    		if(fileName.charAt(fileName.length()-1)=='/')
    			fileName+="index.htm";
    		return fileName;
    			}else return "";
    		}
    	
    void log()
    {
    	System.out.println("Received the following request:");
    	for(int i=0;i<lines.size();i++)
    		System.out.println((String)lines.get(i));
    }
}