怎么根据输入框的字符进行查询啊?代码如下:
search.jsp
<form name="form1" action="search_result.jsp">
...
<tr>
<td><div align="center">输入学号:</div></td>
<td><input name="stu_num" type="text" size="12"></td>
</tr>
...
search_result.jsp
<%
String stu_id=request.getParameter("stu_num").toString();
out.print(stu_id);//这里能够获得值
String sql="select * from student where stu_id='"+stu_id+"'";//这里的SQL查询语句该怎么写啊?
ResultSet rs = stmt.executeQuery(sql);
%>