springmvc非注解方式

springmvc 模型原理


springmvc.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"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
	http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
	  http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">
	
	<!-- 配置Handler -->
	<bean id="itemsController1" name="/queryItems.action" class="com.controller.ItemsController" />
    
    <bean id="itemsController2"  class="com.controller.ItemsController2" />
    
    <bean id="itemsController3"  class="com.controller.ItemsController3" />
    
    <!-- 配置处理器映射器 -->
    <bean 
    	class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
    
    <!-- 另一种处理器映射器 配置simple url 处理器映射器 -->
    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    	<property name="mappings">
    		<props>
    			<prop key="/queryItems1.action">itemsController1</prop>
    			<prop key="/queryItems2.action">itemsController1</prop>
    			<prop key="/queryItems3.action">itemsController2</prop>
    			<prop key="/getjson.action">itemsController3</prop>
    		</props>
    	</property>		
    </bean>
    
    <!-- 配置处理器适配器 -->
    <bean 
    	class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
    	
    <!-- 另一种处理器适配器 -->	
    <bean 
    	class="org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter" />
    
    <!-- 配置视图解析器 -->
    <bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver" />
    
</beans>

web.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>	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <!-- 配置前端控制器 -->
  <servlet>
  	<servlet-name>springmvc</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<init-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:springmvc.xml</param-value>
  	</init-param>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springmvc</servlet-name>
  	<url-pattern>*.action</url-pattern>
  </servlet-mapping>
  
  
</web-app>

controller

package com.controller;

import java.util.ArrayList;
import java.util.List;

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

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

import com.pojo.Items;

public class ItemsController implements Controller{

	@Override
	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {

		List<Items> itemsList = new ArrayList<Items>();
		Items it1 = new Items();
		it1.setName("苹果");
		it1.setPrice(20.3f);
		it1.setDetail("很大超甜");
		
		Items it2 = new Items();
		it2.setName("香蕉");
		it2.setPrice(40.3f);
		it2.setDetail("很大超香");
		itemsList.add(it1);
		itemsList.add(it2);
		
		ModelAndView mv = new ModelAndView();
		mv.addObject("itemsList", itemsList);
		
		mv.setViewName("/WEB-INF/pages/items/itemsList.jsp");
		return mv;
	}

}

controller2.java

package com.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

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

import org.springframework.web.HttpRequestHandler;

import com.pojo.Items;

public class ItemsController2 implements HttpRequestHandler{

	@Override
	public void handleRequest(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		List<Items> itemsList = new ArrayList<Items>();
		Items it1 = new Items();
		it1.setName("苹果");
		it1.setPrice(20.3f);
		it1.setDetail("很大超甜");
		
		Items it2 = new Items();
		it2.setName("香蕉");
		it2.setPrice(40.3f);
		it2.setDetail("很大超香");
		itemsList.add(it1);
		itemsList.add(it2);
		
		request.setAttribute("itemsList",itemsList);
		request.getRequestDispatcher("/WEB-INF/pages/items/itemsList.jsp").forward(request, response);
	}
	
}

controller3

package com.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

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

import org.springframework.web.HttpRequestHandler;

import com.pojo.Items;

public class ItemsController3 implements HttpRequestHandler{

	@Override
	public void handleRequest(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
	   String json="{\"name\":\"香蕉\",\"price\":\"20.0\",\"详细\":\"很好吃\"}";
	   response.setCharacterEncoding("utf-8");
	   response.setContentType("application/json;charset=utf-8");
	   response.getWriter().write(json);
	}
	
}

common.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%
String path1 = request.getContextPath();
String root = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path1;
request.setAttribute("path1", path1);
request.setAttribute("root",root);

%>

itemsList.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ include file="/common/common.jsp" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'itemsList.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
     <table>
     	<tr>
     		<td>名称</td><td>价格</td><td>详情</td>
     	</tr>
	    <c:forEach items="${itemsList }" var="obj">
	     	<tr>
	     		<td>${obj.name }</td>
	     		<td>${obj.price }</td>
	     		<td>${obj.detail }</td>
	     	</tr>
     	  </c:forEach> 
     	   
     </table>
      
  </body>
</html>