spring mvc 2.5

spring mvc使用笔记(基于xml配置文件)

需要三个包spring2.5.jar spring-webmvc-2.5.jar commons-logging.jar

在web.xml添加spring监听器和DispatcherServlet：

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

这里是处理后缀名为htm的servlet请求

然后在WEB-INF目录下创建dispatcher-servlet.xml，红色部分要与servlet-name配置的值一样。

配置如下：

<?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:aop="http://www.springframework.org/schema/aop "
       xmlns:tx="http://www.springframework.org/schema/tx "
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd ">        

     <!-- 这里配置ParameterMethodNameResolver -->   
     <bean id="paraMethodResolver" class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">
           <property name="paramName" value="servlet"/>
     </bean>     

    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <!-- 这里配置拦截器 -->

        <!--
        <property name="interceptors">
            <list>
                <ref bean="LogInter" />
            </list>
        </property>

         -->

        <property name="mappings">

            <props>

                <!-- 这里配置我们的Controller -->
                <prop key="/MyController.htm">myController</prop>

            </props>
        </property>
    </bean>

    <!-- 这里配置Controller的bean，引用了前面定义的ParameterMethodNameResolver -->

    <bean name="myController" class="controller.MyController">

<property name="methodNameResolver" ref="paraMethodResolver" />

</bean>                           
</beans>

我喜欢使用springmvc的MultiActionController，因为可以一个控制器多个请求啊。

public class MyController extends MultiActionController{

    public ModelAndView welcome(HttpServletRequest request,
            HttpServletResponse response){

        //这里写业务逻辑代码，用法就与Servlet一样

       //最return一个ModelAndView，这里返回/WEB-INF/jsp/welcomPage.jsp

       return new ModelAndView("welcomePage");

    }

}

当我们在浏览器输入http://localhost:8080/springmvcTest/ MyController.htm?servlet=welcome就会转到/WEB-INF/jsp/welcomPage.jsp

如果需要用到拦截器，那么只需要继承HandlerInterceptorAdapter类就可以。

要自己实现两个方法：

//调用Controller之前拦截

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object object) throws Exception

//调用Controller之后拦截

public void postHandle(HttpServletRequest request, HttpServletResponse response, Object object, ModelAndView modelAndView) throws Exception {

 

 

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