HttpURLConnection抓取网页响应信息

	/**
	 * 获取网页信息
	 * @param remoteFile 网址url
	 * @return
	 * @throws IOException
	 */

public   String  getRemoteHtml(String remoteFile) throws IOException{
   	 	URL url = null;
		HttpURLConnection urlc = null;
		String sCurrentLine="";  
                java.io.BufferedReader l_reader=null;
		StringBuffer sTotalString = new StringBuffer("");  
		try {
  remoteFile=remoteFile.replaceAll("\\s", "%20");//转换空格
System.out.println("search ulr:"+remoteFile);
			url = new URL(remoteFile);
			urlc = (HttpURLConnection) url.openConnection();
			urlc.setRequestProperty("Accept-Language", "zh-cn");
//			urlc.setRequestProperty("User-Agent","Mozilla/6.0 (compatible; MSIE 5.0; Windows NT; DigExt)");//在linux下需注释该行
			// 输入流    
  l_reader = new java.io.BufferedReader(new java.io.InputStreamReader(urlc.getInputStream(),"UTF-8"));  

			 //得到返回的信息
			 while ((sCurrentLine = l_reader.readLine()) != null) {  
 sTotalString.append(sCurrentLine); 
			  sTotalString.append("\n");
			 }
		}finally{
if(l_reader!=null)
			l_reader.close();
			if(urlc!=null)
			urlc.disconnect();
		}
		return sTotalString.toString();
 }