ModelMap/ModelAndView数据未显示

Question

我正在尝试运行 spring mvc helloworld 示例 tutorialspoint.but I am not geeting the modelmap data in jsp page .I had added all the required jars in web-inf/lib folder.I am also using <%@ page contentType="text/html; charset=UTF-8" isELIgnored="false" %> .But still i am not getting data in jsp page. i also view so many answers for this question on Whosebug and on http://www.mkyong.com/spring-mvc/modelandviews-model-value-is-not-displayed-in-jsp-via-el/ 这是我的项目flow.Please帮助提前致谢

. 我的 HelloController 是

package com.tutorialspoint;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.ui.ModelMap;

@Controller
@RequestMapping("/hello")
public class HelloController{

   @RequestMapping(method = RequestMethod.GET)
   public String printHello(ModelMap model) {
      model.addAttribute("message", "Hello Spring MVC Framework!");

      return "hello";
   }

}

web.xml 是 ::

<web-app id="WebApp_ID" version="2.4"
   xmlns="http://java.sun.com/xml/ns/j2ee" 
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

   <display-name>Spring MVC Application</display-name>

   <servlet>
      <servlet-name>HelloWeb</servlet-name>
      <servlet-class>
         org.springframework.web.servlet.DispatcherServlet
      </servlet-class>
      <load-on-startup>1</load-on-startup>
   </servlet>

   <servlet-mapping>
      <servlet-name>HelloWeb</servlet-name>
      <url-pattern>/</url-pattern>
   </servlet-mapping>

</web-app>

HelloWeb-servlet.xml 是

<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="
   http://www.springframework.org/schema/beans     
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context 
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">

   <context:component-scan base-package="com.tutorialspoint" />

   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name="prefix" value="/WEB-INF/jsp/" />
      <property name="suffix" value=".jsp" />
   </bean>

</beans>

这是我的 hello.jsp::

<%@ page contentType="text/html; charset=UTF-8" isELIgnored="false" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
 hiiiii <h2>${message}</h2>

</body>
</html>

Answer 1

通常应用程序会查找文件夹 webapp（位于 src/main/webapp/），您应该将整个 WEB-INF 文件夹与相应的 jsp 文件一起移动（src/main/webapp/WEB-INF/jsp/hello.jsp).

但是您使用的教程 (tutorialspoint) 假定将整个 WEB-INF 复制到 tomcat 中的 webapp 文件夹 - 以及相应的库 (

Once you are done with creating source and configuration files, export your application. Right click on your application and use Export > WAR File option and save your HelloWeb.war file in Tomcat's webapps folder.

对于未来，我强烈建议使用像 maven 这样的构建自动化工具，这将简化过程 spring mvc with maven。

Answer 2

将 web.xml xsd 架构从 2.4 更改为 3，例如：

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    metadata-complete="true" version="3.0">

Answer 3

我解决了这个问题。我 made.Thanks @akfaz 的结构有一些问题..我们必须在 web-inf 中创建一个 jsp 文件夹然后必须为此代码编写 hello.jsp...这是一个我当前项目流程的屏幕排序工作正常，我能够使用 spring MVC 获取 ModelMap/Model 的数据并在 jsp 中查看。:)

ModelMap/ModelAndView数据未显示

ModelMap/ModelAndView data is not displayed

java

spring

jsp

el

spring-mvc