Spring MVC入门小例子

web.xml里的配置如下： 

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name></display-name>


  <servlet>
  <!-- 第一个首先调用的前端控制器，注意与WEB-INFO下servlet的xml相对应 -->
    <servlet-name>chapter2</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>chapter2</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<servlet>
    <servlet-name>forwarding</servlet-name>
    <servlet-class>com.qin.sanxian.ForwardServlet</servlet-class>
</servlet>
<!-- 处理post提交的乱码解决 -->
<filter>
    <filter-name>CharacterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>utf-8</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

chapter2-servlet.xml里面的配置如下： 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">


    <!-- 第二步调用  HandlerMapping -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>

    <!--第三步调用  HandlerAdapter -->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

    <!-- 第六步调用    ViewResolver -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
        <!-- 第七步调用   到/web-info下面映射到hello.jsp，进而渲染页面 -->
    <!-- 处理器   -->
    <bean name="/hello" class="com.qin.sanxian.HelloWorldController">
    <!-- 仅支持post提交提交表单的支持 <property name="supportedMethods" value="POST"></property>-->

    </bean>
    <bean name="/forward"
class="org.springframework.web.servlet.mvc.ServletForwardingController">
        <property name="servletName" value="forwarding"></property>
</bean>


<bean name="/abstractCommand"
class="com.qin.sanxian.MyCommandController">


        <!-- 也可以通过依赖注入 注入命令实现类 -->
        <!-- property name="commandClass" value="cn.javass.chapter4.model.UserModel"/-->
</bean>
<!--  表单的控制器 -->
<bean name="/simpleForm" class="com.register.ReginsterController">
<property name="formView" value="register"></property>
<property name="successView" value="redirect:/success"></property>
</bean>

<!-- 处理成功的页面 -->

<bean name="/success" class="com.qin.sanxian.SuccessController"></bean>


<bean name="/mutilRegister" class="com.mutilregister.MultiRegisterController">

<property name="pages">
<list>
<value>wizard/baseinfo</value>
<value>wizard/schoolinfo</value>
<value>wizard/workinfo</value>
</list>

</property>

</bean>
</beans>

控制器demo 

package com.qin.sanxian;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

/**
 *
 *hellowrod控制器
 * **/
public class HelloWorldController implements Controller {




    @Override
    public ModelAndView handleRequest(HttpServletRequest arg0,
            HttpServletResponse arg1) throws Exception {

        //1，收集参数，验证参数
        //2，绑定参数到命令对象
        //3，将命令对象传入业务对象进行业务处理
        //4,选择下一个页面
        //ModelAndView mv=new ModelAndView();
        //添加模型数据，可以是任意的POJO对象
        //mv.addObject("message", "Hellow Wordld!");
        //设置逻辑视图名，视图解析器，会根据此名字，解析到对应的视图页面
        /**
         *
         * 第五步返回 根据此名字
         * */
        //mv.setViewName("hello");
        arg1.getWriter().write("abc");
        return null;
    }

}

项目的目录结构如下截图：