我的app有问题。我使用SpringMVC,Maven,Hibernate。只是我试图在jsp视图中打印一些数据。
我的web.xml文件:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>app</display-name>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
我的控制员的一部分:
@RequestMapping(value="/", method=RequestMethod.GET)
public String generateMainPage(ModelMap model)
{
UserModel um = new UserModel();
// setting UserModel data which are 100% not null
String simpleString = "hello "+new Date().toString();
int simpleNumber = 1234;
model.addAttribute("userModel", um);
model.addAttribute("string", simpleString);
model.addAttribute("number", simpleNumber);
return "mainPage";
}
我的模特:
public class UserModel
{
private String name;
private String age;
// setters and getters
}
现在,问题是我的jsp没有从bean返回值 ONLY 。我发现了一个类似的问题HERE,但它没有解决任何问题。
我的部分jsp&#34;主页&#34;页面:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!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 page</title>
</head>
<body>
${simpleString} <br/> <!-- this works fine -->
${simpleNumber} <br/> <!-- this works fine also -->
${um.name} <!-- this return nothing -->
${um.age} <!-- same here -->
</body>
</html>
答案 0 :(得分:1)
${um.name} <!-- this return nothing -->
应该是
${userModel.name}
因为在控制器中你这样做
model.addAttribute("userModel", um);
字符串是属性的名称,它可以是您想要的任何内容