$ {}不能在jsp spring項目中工作

在我的動態Web項目中，Spring MVC框架$ {}沒有在jsp頁面中顯示變量值。

請找到下面的代碼：

的web.xml

<?xml version="1.0" encoding="UTF-8"?> 
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> 
    <display-name>SpringMVCTest</display-name> 
    <welcome-file-list> 

    <welcome-file>index.jsp</welcome-file> 

    </welcome-file-list> 

    <servlet> 

    <servlet-name>dispatcher</servlet-name> 

    <servlet-class> 
     org.springframework.web.servlet.DispatcherServlet 
    </servlet-class> 
    </servlet> 

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

</web-app>

調度員的servlet

<?xml version="1.0" encoding="UTF-8"?> 

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


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


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

</beans>

BaseController.java控制器類

package com.springtutorial.basecontroller; 

import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.servlet.ModelAndView; 


@Controller 

public class BaseController { 

    @RequestMapping(value="/", method=RequestMethod.GET) 
    public ModelAndView printHello(){ 
     return new ModelAndView("index", "message", "Hi"); 
    } 

}

的index.jsp它是唯一的JSP頁面

<%@ page language="java" contentType="text/html; charset=UTF-8" 
    pageEncoding="UTF-8"%> 
    <%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%> 

<!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=UTF-8"> 
<title>Spring MVC Framework</title> 
</head> 
<body> 
<h1>learning</h1> 
    <h2>${message}</h2> 
</body> 
</html>

我新的Spring MVC框架，剛開始學習它。我剛剛在互聯網上查看了代碼，它幾乎相似，但仍然沒有運氣。

請讓我知道如果我失去了一些東西。

感謝

來源

2017-04-05 Aman Saxena

我取得了BaseController.java文件和調度-servlet.xml文件的變化：

BaseController.java

package com.springtutorial.basecontroller; 

import org.springframework.stereotype.Controller; 
import org.springframework.ui.Model; 
import org.springframework.web.bind.annotation.RequestMapping; 
//import org.springframework.web.bind.annotation.RequestMethod; 
//import org.springframework.web.servlet.ModelAndView; 


@Controller 

public class BaseController { 

    @RequestMapping("/") 
    public String index(Model model){ 
     model.addAttribute("message", "Hi"); 
     return "index"; 
    } 
}

調度-servlet.xml中

<?xml version="1.0" encoding="UTF-8"?> 

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


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


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

</beans>

請試試這個。它正在爲我工作

來源

2017-04-05 18:04:36

$ {}不能在jsp spring項目中工作

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