我在servlet中有以下方法
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setAttribute("categories", categoryService.getAll());
RequestDispatcher dispatcher = request.getRequestDispatcher("/Category.jsp");
dispatcher.forward(request, response);
}
当我打电话给jsp页面时,我想从get获取所有类别,但它根本不会调用get方法
这是我的jsp
<body>
<% List<CategoryDTO> categoryList=new ArrayList<CategoryDTO>();
categoryList=(ArrayList<CategoryDTO>)request.getAttribute("categories");
%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<c:forEach items="${categoryList}" var="element">
<tr>
<td>${element.name}</td>
</tr>
</c:forEach
有人可以帮我吗?
答案 0 :(得分:0)
无需在jsp中声明列表,只需尝试这样,
<body>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<c:forEach items="${categories}" var="element"> //change here categories not categotyList
<tr>
<td>${element.name}</td>
</tr>
</c:forEach