用java程序直接访问URL地址

/** 
     * 程序中访问http数据接口 
     */ 
    public static String getURLContent(String urlStr) {            
        /** 网络的url地址 */     
     URL url = null;           
        /** http连接 */ 
     HttpURLConnection httpConn = null;         
         /**//** 输入流 */
     BufferedReader in = null;
     StringBuffer sb = new StringBuffer();
     try{  
      url = new URL(urlStr);  
      in = new BufferedReader( new InputStreamReader(url.openStream(),"UTF-8") );
      String str = null; 
      while((str = in.readLine()) != null) { 
       sb.append( str );  
             }  
         } catch (Exception ex) {
          
         } finally{ 
          try{          
           if(in!=null) {
            in.close();  
                 }  
             }catch(IOException ex) {   
             }  
         }  
         String result =sb.toString();  
         System.out.println(result);  
         return result; 
         }