Question

servlet向jsp传值怎么是空的？

servlet的代码
public class ListAllStudentsServlet extends HttpServlet {
private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

StudentDao studentDao=new StudentDao();
List<Student> students=studentDao.getAll();

request.setAttribute("students", students);

request.getRequestDispatcher("/students.jsp").forward(request, response);
}

JSP的代码：
<%
List<Student> stus = (List<Student>)request.getAttribute("students");
%>
<table border="1" cellpadding="10" cellspacing="0">
<tr>
<th>flowId</th>
<th>type</th>
<th>idCard</th>
<th>examCard</th>
<th>studentName</th>
<th>location</th>
<th>grade</th>
<th>DELETE</th>
</tr>
<%
for (Student student : stus) {
%>
<tr>
<td><%=student.getFlowId() %></td>
<td><%=student.getType() %></td>
<td><%=student.getIdCard() %></td>
<td><%=student.getExamCard() %></td>
<td><%=student.getStudentName() %></td>
<td><%=student.getLocation() %></td>
<td><%=student.getGrade() %></td>
<td><a href="deleteStudent?flowId=<%=student.getFlowId()%>">DELETE</td>
</tr>
<%
}
%>

</table>
补充在servlet中的students是有值的，从servlet向jsp中传固定的数也是可以的，就是传student的不行，求大神呀！小弟很急！

Answer 1

你这一句是无法获取他的值的 。request.setAttribute("students", students);
这位lemon3135说对了，应该用 request.getparameter();

Answer 2

request.getParameter("students");

追问

您这个答案根本不对！

追答

额 呵呵 我们不这样用jsp和servlet，jsp页面一般不嵌套java代码