将数据从控制器发送到 jsp

Question

After putting $ sign getting this error in browser

我试图将数据从我的控制器发送到 jsp 页面，但它只是打印 -->

{login.UserID}
{login.Password}

Logincontroller.java

@Controller
public class LoginController {

    public final static  String WELCOME = "Welcome";
    public final static  String LOGIN = "Login";

    @RequestMapping(value ="/login" , method = RequestMethod.GET)
    public ModelAndView ShowLogin()
    {
        ModelAndView mav = new ModelAndView(LOGIN);
        return mav;
    }

    @RequestMapping(value = "/loginProcess", method = RequestMethod.POST)
    public ModelAndView LoginUser(@ModelAttribute("login") Login login)
    {
        ModelAndView model = new ModelAndView(WELCOME);
        System.out.println(login.getUserID());
        System.out.println(login.getPassword());
        //model.addObject("login",login);
        return model;       
    }
}

Welcome.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
 "http://www.w3.org/TR/html4/loose.dtd">
 <html>
   <head>
     <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
     <title>Welcome</title>
  </head>
  <body>

    <h1>{login.UserID}</h1>
    <h1>{login.Password}</h1>



  </body>
</html>

但我不会在 jsp 中输入名称和密码的值，而是得到 -->

{login.UserID}
{login.Password}

Answer 1

看来您可能需要添加一个 $ 像

${login.UserID}

将数据从控制器发送到 jsp

Sending Data from Controller to jsp

java

spring-mvc

modelattribute