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我正在使用Spring MVC。为什么我的模型中的数据不会显示在output.jsp中？我正在研究一个非常简单的数据示例，这些数据在一页上显示出来，并在第二页显示。我检查数据是否在模型中，但是我不知道为什么第二个JSP不显示它。Spring MVC为什么我的模型中的数据不会显示在output.jsp中？
这里是我的控制：
@Controller
public class RequestController {
private static final Logger LOGGER = getLogger(RequestController.class);
@RequestMapping(value = "/request" , method = RequestMethod.GET)
public ModelAndView displayRequestPage(@ModelAttribute("inputForm") InputForm inputForm) {
return new ModelAndView("input");
}
@RequestMapping(value = "/request" , method = RequestMethod.POST)
public ModelAndView displayOutputPage(@ModelAttribute("inputForm") InputForm inputForm) {
Map<String, Object> model = new HashMap<String, Object>();
model.put("inputForm", inputForm);
return new ModelAndView("display", model);
}
}
这里是我的输出JSP：
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title>JQuery Validation Engine</title>
</head>
<body>
<center>
<h2>JQuery Examples</h2>
</center>
<p>Name: <c:out value="${inputForm.name}"/>
<p>Phone(xxx)xxx-xxxxx: <c:out value="${inputForm.phone}"/>
<p>Email: <c:out value="${inputForm.email}"/>
<p>
<b>Please <a href="./request">click here</a> to restart</b>
</p>
</body>
</html>
这是我得到的输出：
Name: ${inputForm.name}
Phone(xxx)xxx-xxxxx: ${inputForm.phone}
Email: ${inputForm.email}
Please click here to restart
这里是我的Spring MVC .xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
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-3.0.xsd">
<mvc:annotation-driven />
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource"
p:basenames="messages" />
<!-- Declare the Interceptor -->
<mvc:interceptors>
<bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"
p:paramName="locale" />
</mvc:interceptors>
<mvc:resources mapping="/static/**" location="/WEB-INF/static/"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
我得到它的工作，但改变我的web.xml ..下面是工作的web.xml：
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>JQuery Example Web Application</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/root-config.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
，这里是没有工作的web.xml中：
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<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_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>JQuery Example Web Application</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/root-config.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
灿有人请告诉我为什么改变web.xml使它工作。
你使用了什么ViewResolver？ – 2013-03-08 15:18:56
<豆ID = “视图解析器” \t \t类= “org.springframework.web.servlet.view.UrlBasedViewResolver”> \t \t <属性名= “viewClass类” \t \t \t值=“org.springframework.web。 servlet.view.JstlView “/> \t \t <属性名= ”前缀“ 值= ”/ WEB-INF/JSP /“/> \t \t <属性名= ”后缀“ 值=”。JSP” /> \t – SJS 2013-03-08 15:19:26
看起来你的EL没有被评估。你可能想试试这个：http://stackoverflow.com/q/1721518/738746。 – 2013-03-08 15:20:02