课程查找

接上一篇（以教师姓名查找）

在servlet添加

private void findByteachername(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
             req.setCharacterEncoding("utf-8");
            //获取数据
             String teachername=req.getParameter("teachername");
            List<Course> courses=dao.findByteachername(teachername);
            if(courses == null) {
                req.setAttribute("message", "查无此信息！");
                req.getRequestDispatcher("find.jsp").forward(req,resp);
            } else {
                req.setAttribute("courses", courses);
                req.getRequestDispatcher("list.jsp").forward(req,resp);
            }

     }

 

find层

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>课程查找页面</title>
</head>
<body>
    <%
          Object message = request.getAttribute("message");
          if(message!=null && !"".equals(message)){
      
     %>
          <script type="text/javascript">
               alert("<%=request.getAttribute("message")%>");
          </script>
     <%} %>

    <form name="form" action="CourseServlet?method=findByteachername" method="post">
       任课教师： <input type="text" name="teachername" />
                    <input type="submit" value="查找" />
    </form>
</body>
</html>

 

posted @ 2021-11-24 22:00  清梦韶华  阅读(23)  评论(0)  编辑  收藏  举报