java 根据URL获取网页源码

package com.test;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;


public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Test t6=new Test();
        String htmls= t6.getPageSource("http://www.no5.com.cn/browse/specialprice_p2.html","GBK");
        System.out.println(htmls);
    }
    
    public String getPageSource(String pageUrl,String encoding) {  
        StringBuffer sb = new StringBuffer();  
        try {  
            //构建一URL对象  
            URL url = new URL(pageUrl);  
            //使用openStream得到一输入流并由此构造一个BufferedReader对象  
            BufferedReader in = new BufferedReader(new InputStreamReader(url  
                    .openStream(), encoding));  
            String line;  
            //读取www资源  
            while ((line = in.readLine()) != null) {  
                sb.append(line);  
                sb.append("\n");
            }  
            in.close();  
        } catch (Exception ex) {  
            System.err.println(ex);  
        }  
        return sb.toString();  
    } 

}