Spring MVC入门小例子

入门Spring  MVC也有一段时间了，今天写篇文章总结一下 。


web.xml里的配置如下：

<pre name="code" class="xml"><?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>
</pre>
chapter2-servlet.xml里面的配置如下：

<pre name="code" class="xml"><?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>
</pre>
控制器demo
<pre name="code" class="java">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;
}

}
</pre>
项目的目录结构如下截图：