java - 在JSP页面中打印选中的值

Question

我试图从 JSP 页面打印复选框列表的选中值，但即使有一些选择，也不会出现任何内容。

<form action="process" method="POST">
<c:forEach var="item" items="${list.items}">
<input type="checkbox" name="chkSkills" value="${$item.Id}">${item.name}
</c:forEach>        
<input type="submit" name="Getvalue" value="Get value" />
</form>

protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String[] Answers = request.getParameterValues("chkSkills");
PrintWriter out = response.getWriter();

String ButClicked = request.getParameter("Getvalue");
if (ButClicked != null) {
        for (String Answer : Answers) {
            out.print(Answer + "<br>");
        }
    }
    //processRequest(request, response);
}

Answer 1

将您的value属性更正为

value="${item.Id}"

注意，无需再次将 $ 放入 {} 内。