为什么无法在jsp中显示两个输入答案

【问题标题】：Why unable to display two inputs in jsp为什么无法在jsp中显示两个输入
【发布时间】：2020-01-31 07:55:25
【问题描述】：

指向那里的箭头我需要输出姓氏是：lion

我无法获得欲望输出。我认为问题出在 index.jsp 或 NameController.java 文件中

索引jsp代码

    <form name="greetingForm" action="NameController" method="post" style="width: 300px; ">
    <table>
    <tr>
    <td>Please enter your name</td>
    </tr>
    <tr>
         <td><input name="name" value='${nameForm.name}'/></td> 
    </tr>
    <tr>
    <td>Enter Last name</td>
    </tr>
    <tr>
        <td><input name="lastName" value='${nameForm.lastName }'/></td>
        <td><input type="submit" value="Submit"></td>
    </tr>
    </table>
    </form>

    <input id="greetingField" value='${nameForm.greetingText}' style ="background-color: white; border: none; width: 400px;" disabled="disabled" />
    <input id="greetingFields" value='${val.idText }' style ="background-color: white; border: none; width: 400px;"disabled = "disabled" />
    <input id="currentTime" value='${nameForm.currentTime}' style ="background-color: white; border: none; width: 400px;" disabled="disabled" />
    </table>
    </body>
    </html>

NameForm.java

    public void setCurrentTime(String currentTime) {
            this.currentTime = currentTime;
        }

        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }

        //my code 
        public String getlastName() {
            return lastName;
        }
        public void setlastName(String lastName) {
            this.lastName = lastName;
        }
        //my code ends
        public String getGreetingText() {
            return greetingText;
        }
        public void setGreetingText(String greetingText) {
            this.greetingText = greetingText;
        }
        //my code
        public String getIdText() {
            return idText;
        }
        public void setIdText(String idText) {
            this.idText = idText;
        }
        //my code ends
    }

名称 controller.java

    public class NameController extends HttpServlet {
        private static final long serialVersionUID = 1L;

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

        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            HttpSession session = request.getSession();
            NameForm nameForm = new NameForm();
            NameForm val = new NameForm();
            nameForm.setName(request.getParameter("name"));
            val.setlastName(request.getParameter("lastName"));
            session.setAttribute("nameForm",nameForm);
            session.setAttribute("val", val);
            nameForm.setGreetingText("Hello "+nameForm.getName());
            val.setGreetingText("last name is:" +val.getlastName());
            getServletContext().getRequestDispatcher("/index.jsp").forward(request, response);
        }

    }

【问题讨论】：

在此处以文本形式发布您的代码。
Please add a minimal, complete, and verifiable example
如果你点击那个链接，你可以看到代码，但我还是会把它贴在这里
@AdityaBhogte 您已经使用val 在您的servlet 中为lastname 设置值。所以您需要使用val.lastName 来访问它。但是您这里有错字而不是@987654330 @你已经使用${nameForm.lastName}检查你的输入并相应地改变它。

标签： java jsp servlets textbox output

【解决方案1】：

更改这些行：

<tr>
        <td><input name="lastName" value='${val.lastName }'/></td>
        <td><input type="submit" value="Submit"></td>
    </tr>

【讨论】：