Spring MVC入门小例子

ゝ一世哀愁。 2022-04-21 14:23 151阅读 0赞

\[b\]\[color=green\]\[size=large\]入门Spring MVC也有一段时间了，今天写篇文章总结一下 。\[/size\]\[/color\]\[/b\]  
  
  
\[b\]\[color=olive\]\[size=large\]web.xml里的配置如下：\[/size\]\[/color\]\[/b\]

<?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>  
      
        <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>  
    
    <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>

\[b\]\[color=green\]\[size=large\]chapter2-servlet.xml里面的配置如下：\[/size\]  
\[/color\]\[/b\]

<?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">
    
    
        
        <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
    
        
        <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
    
        
        <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>
            
        
        <bean name="/hello" class="com.qin.sanxian.HelloWorldController">
        
    
        </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">  
    
    
              
              
    </bean>  
    
    <bean name="/simpleForm" class="com.register.ReginsterController">
    <property name="formView" value="register"></property>
    <property name="successView" value="redirect:/success"></property>
    </bean>
    
    
    
    <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>

\[b\]\[color=olive\]\[size=large\]控制器demo\[/size\]\[/color\]\[/b\]

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;
    	}
    
    }

\[b\]\[size=large\]\[color=olive\]项目的目录结构如下截图：\[/color\]\[/size\]\[/b\]  
  
\[img\]http://dl2.iteye.com/upload/attachment/0092/7314/ecaa51ed-a23d-3792-94e3-0346e202d6d0.png\[/img\]