关于SpringMVC小结

最新推荐文章于 2025-06-20 16:12:17 发布

原创最新推荐文章于 2025-06-20 16:12:17 发布 · 413 阅读

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本文详细介绍了SpringMVC框架的基本配置方法，包括配置文件的结构、核心控制器DispatcherServlet的设置、处理器映射、视图解析器配置等内容，并通过具体示例展示了如何实现控制器功能。

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SpringMVC的配置文件
<?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:mvc="http://www.springframework.org/schema/mvc"
       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/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!--方式二：使用Tomcat默认的Servlet解决静态资源无法请求的问题-->
       <!-- 静态资源无法加载-->
    <!--<mvc:default-servlet-handler/>-->

    <!--方式三：使用新的方式 resources标签-->
    <!--有图片之后注释了之后刷新之后还有  要ctrl+F5图片才没因为把缓存去掉了-->
    <!--<mvc:resources  location="img/" mapping="img/**"/>-->

    <!--处理器映射器  （没反应）-->
    <!-- <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>-->

    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <!--<property name="mappings">
            <props>
                <prop key="hello.do">FirstController</prop>
                <prop key="haha.do">FirstController</prop>
            </props>
        </property>-->
        <property name="urlMap">
            <map>
                <entry key="hello.do">
                    <value>FirstController</value>
                </entry>
                <entry key="haha.do" value="FirstController"></entry>
            </map>
        </property>
    </bean>

    <!--注册Hanlder  处理器-->
    <bean id="FirstController" class="cn.happy.controller.FirstController"/>
   <!-- <bean id="/hello.do" class="cn.happy.controller.FirstController"/>-->

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


</beans>

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

web.xml配置

<!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> <display-name>Archetype Created Web Application</display-name>  <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc-servlet-hander.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping>  </web-app>

实现Controller接口
public class FirstController implements Controller{
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
       ModelAndView model=new ModelAndView();
       model.addObject("uname","你是小仙女吗？ 回答：是呀，哈哈哈哈");
       //model.setViewName("/WEB-INF/zxy.jsp");
        model.setViewName("zxy");
       return model;
    }
}

继承AbstractController
public class SecondController extends AbstractController {

    protected ModelAndView handleRequestInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView model=new ModelAndView();
        model.addObject("uname","你是小仙女吗？ 回答：是呀，哈哈哈哈");
        model.setViewName("zxy");
        return model;
    }
}

配置2  继承的配置文件JSP页面


<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
你是非常棒的，啦啦啦啦啦啦<br/>
${uname}
<img src="${pageContext.request.contextPath}/img/psb.jpg"/>
</body>
</html>

<?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:mvc="http://www.springframework.org/schema/mvc" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="urlMap"> <map> <entry key="hello.do"> <value>SecondController</value> </entry> </map> </property> </bean>  <bean id="SecondController" class="cn.happy.controller.SecondController"> <property name="supportedMethods"> <set> <value>POST</value> <value>GET</value> </set> </property> </bean>  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/"></property> <property name="suffix" value=".jsp"></property> </bean></beans>