我用springmvc做了一个小例子,参考的是srping in action 上的。下面是我的输出结果:Hello World! ${rants} 为什么变量没有被替换啊???1)我的jsp页面是:<html>
<body>
<h2>Hello World! ${rants} </h2>
</body>
</html>2)我的servlet 的web.xml 配置文件是:<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app 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"> <context-param>
<param-name>contextConfigLocation</param-name>
<param-value> /WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>sample</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>3</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>sample</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
</web-app>3)对应的 road-servlet.xml 文件内容是:<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<bean name="/index.htm" class="com.duck.home.HomePageController">
<property name="page">
<value> wzf </value>
</property>
</bean>
<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>4)我的controller 是:package com.duck.home;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;public class HomePageController extends AbstractController{
private String page;
public HomePageController (){
}
protected ModelAndView handleRequestInternal( HttpServletRequest request, HttpServletResponse response)throws Exception{
String page= this.page;
System.out.println(page);
return new ModelAndView("index", "rants", page);
}
public void setPage(String page){
this.page=page;
}
}
我期待的结果是 变量替换 成 wzf 谁能告诉我哪里错了啊??
<body>
<h2>Hello World! ${rants} </h2>
</body>
</html>2)我的servlet 的web.xml 配置文件是:<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app 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"> <context-param>
<param-name>contextConfigLocation</param-name>
<param-value> /WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>sample</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>3</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>sample</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
</web-app>3)对应的 road-servlet.xml 文件内容是:<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<bean name="/index.htm" class="com.duck.home.HomePageController">
<property name="page">
<value> wzf </value>
</property>
</bean>
<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>4)我的controller 是:package com.duck.home;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;public class HomePageController extends AbstractController{
private String page;
public HomePageController (){
}
protected ModelAndView handleRequestInternal( HttpServletRequest request, HttpServletResponse response)throws Exception{
String page= this.page;
System.out.println(page);
return new ModelAndView("index", "rants", page);
}
public void setPage(String page){
this.page=page;
}
}
我期待的结果是 变量替换 成 wzf 谁能告诉我哪里错了啊??
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这种问题,一般是因为没有用jsp2.0的部署描述符或者你的容器必须就不支持JSP2.0。
具体的就是tomcat你就要用5.0以上的版本;在web.xml里,修改web.xml的头:
<?xml version= "1.0 " encoding= "ISO-8859-1 "?>
<web-app 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 web-app_2_4.xsd "
version= "2.4 ">
;再不行就在你的jsp文件开始加上
<%@ page isELIgnored= "false "%>
hm.put("regInfo", regInfo);
return new ModelAndView(this.getSuccess_view(),hm);
用户名:<c:out value="${regInfo.userName}"></c:out><br/>
这样就可以了。