httpconnection.java

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package com.easyjf.http;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URLConnection;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class HttpConnection {
	private URLConnection conn;
	public HttpConnection()
	{
		
	}
	public HttpConnection(URLConnection conn)
	{
	this.conn=conn;	
	}
	
	public String getHTML()throws IOException
	{			
		BufferedReader readIn = null;
		String line;
		 StringBuffer resultSB = new StringBuffer();
		 String charset=null;
		 Pattern p=Pattern.compile("charset=['\"]*([\\w-\\d]*)['\"]*");
		 //ContentType is like:text/html; charset=utf-8
		//System.out.println(conn.getContentType());
		 if(conn.getContentType()!=null){
		Matcher mc=p.matcher(conn.getContentType().toLowerCase());
		if(mc.find())charset=(mc.group(1));		
		 }
		// System.out.println(charset);
		if(charset!=null && (!charset.equals("")))
		   readIn = new BufferedReader(new InputStreamReader(conn.getInputStream(),charset));
		   else			   
	       readIn = new BufferedReader(new InputStreamReader(conn.getInputStream()));	      
	       while ( (line = readIn.readLine()) != null) {	    	
	         resultSB.append(line+"\n");
	       }		
	     return resultSB.toString();
	}
}