anchor.diff:      	 				</td>
       	 				<td style="text-align: right">sex</td>
       	 				<td style="text-align: left">
  -    	 					<select>
  +    	 					<select name="sex">
       	 						<option value="">no limit</option>
       	 						<option value="male" ${'male'==param.sex?'selected':"" }>male</option>
       	 						<option value="female" ${'female'==param.sex?'selected':"" }>female</option>
  
positive.code:      }
       
       String countSQL = "select count(*) from tb_person "+whereClause;
       
       int recordCount = DBConnect.getCount(countSQL);
       int pageCount = (recordCount+pageSize)/pageSize;
       
       String querySQL = "select * from tb_person "+whereClause+" limit "+(pageNum-1)*pageSize+","+pageSize;
       
       Connection conn = null;
       Statement stmt = null;
       ResultSet rs = null;
  
negative.code:     
      String nameSearch = request.getParameter("name");
      String sexSearch = request.getParameter("sex");
      String englishNameSearch = request.getParameter("english_name");
      String birthdayStartSearch = request.getParameter("birthdayStart");
      String birthdayEndSearch = request.getParameter("birthdayEnd");
      String descriptionSearch = request.getParameter("description");
  