springmvc

springmvc请求流程与struts比较

 

1.添加包

com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
spring-aop-3.2.2.jar
spring-aspects-3.2.2.jar
spring-beans-3.2.2.jar
spring-context-3.2.2.jar
spring-context-support-3.2.2.jar
spring-core-3.2.2.jar
spring-expression-3.2.2.jar
spring-web-3.2.2.jar
spring-webmvc-3.2.2.jar

2.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc</display-name>
  
  
  <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
  
  <welcome-file-list>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

3.配置 spring-mvc.xml 名字要与web.xml中的 classpath:后面的保持一致就可以了

<?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-3.2.xsd">
    
<!--     handdlerMapping 如果没有写 默认是 BeanNameUrlHandlerMapping -->
<!--         映射分为3种，BeanNameUrlHandlerMapping、simpleUrlHandlerMapping、controllerClassNameHandlerMapping -->
<!--     property name="order" value="1" 用于排序哪种优先级高，数字越小优先级越高 -->
    <!-- 处理器映射 -->
    <!-- BeanNameUrl处理器映射 -->
    <bean id="beanNameUrlHandlerMapping" class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">
        <property name="order" value="1"/>
    </bean>
    <!-- SimpleUrl处理器映射， 多个不同的url转到同个action请求的情况 -->
    <bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="/hi.action">hc</prop>
                <prop key="/a.action">hc</prop>
                <prop key="/b.action">hc</prop>
                <prop key="/c.action">hc</prop>
            </props>
        </property>
        <property name="order" value="0"/>
    </bean>
    <!-- ControllerClassName处理器映射 -->
<!--     根据类名请求url，类名要小写，切记 -->
    <bean id="controllerClassNameHandlerMapping" class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
        <property name="order" value="2"/>
    </bean>
                        
    <!-- 控制器 -->
    <bean id="hc" name="/hi.action" class="cn.itcast.springmvc.web.controller.HomeController"/>
    <bean id="personCommandController" class="cn.itcast.springmvc.web.controller.PersonCommandController"/>
    <bean id="personFormController" class="cn.itcast.springmvc.web.controller.PersonFormController">
        <!-- 表单视图 -->
        <property name="formView" value="jPersonCreate"/>
        <!-- 成功视图 -->
        <property name="successView" value="index"/>
    </bean>
    <bean id="myWizardController" class="cn.itcast.springmvc.web.controller.MyWizardController">
        <property name="pages">
            <list>
                <value>wizard/jPersonBaseInfo</value>
                <value>wizard/jPersonEduInfo</value>
                <value>wizard/jPersonWorkInfo</value>
            </list>
        </property>
    </bean>
    
    
    <!-- 内部资源视图解析器  prefix + logicName + suffix /WEB-INF/jsps/ + index + .jsp-->
<!--     用于解析在controller 中return  ModelAndView中的视图名的拼凑 -->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 前缀 -->
        <property name="prefix" value="/WEB-INF/jsps/"/>
        <!-- 后缀 -->
        <property name="suffix" value=".jsp"/>
    </bean>
    
</beans>

4.HomeController.java

package cn.itcast.springmvc.web.controller;

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

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

public class HomeController extends AbstractController {

    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request,
            HttpServletResponse response) throws Exception {


        System.out.println("hello" + request.getContextPath() + request.getServletPath());
        
        return new ModelAndView("index");
    }

}

5 . index.jsp

<%@ page language="java" pageEncoding="UTF-8"%>
<html>
  <head>
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  
  <body>
    
    This is my JSP page. spring MVC<br>
  </body>
</html>

spring-mvc.xml中包含3种handdlerMapping的配置 选择一种适合的

接下来进行Controller的介绍