非注解的處理器映射器

處理器映射器：
org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping

org.springframework.web.servlet.handler.SimpleUrlHandlerMapping

處理器適配器:
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter

org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter

多個映射器適配器可以并存

springmvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
        
    <!-- 配置Handler -->
    <!-- <bean name="/queryItems.action" class="cn.ztc.ssm.controller.ItemsController1"/> -->
    
    <bean id="ItemsController1" name="/queryItems.action" class="cn.ztc.ssm.controller.ItemsController1"/>
    
    <bean id="ItemsController3" class="cn.ztc.ssm.controller.ItemsController2"/>

    <!-- 處理器映射器 
        將bean的那么作為url進行查找，需要在配置Handler是指定beanname
    --> 
    <bean   class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
    
    <!-- 簡單url映射 -->
    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <!-- 對ItemsController1進行url映射 -->
                <prop key="/queryItems1.action">ItemsController1</prop>
                <prop key="/queryItems2.action">ItemsController1</prop>
                <prop key="/queryItems3.action">ItemsController3</prop>
            </props>
        </property>
    </bean>
    
    <!-- 處理器適配器 -->
    <bean   class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
    
    <bean class="org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter"/>
    
    <!-- 視圖解析器 
        解析jsp，默認使用jstl標簽
    -->
    <bean   class="org.springframework.web.servlet.view.InternalResourceViewResolver"/>
        
</beans>```

ItemsController1.java

package cn.ztc.ssm.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 cn.ztc.ssm.po.*;

public class ItemsController1 implements Controller{

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

    //調用service查找數(shù)據庫，查詢商品列表，這里使用靜態(tài)數(shù)據模擬
    List<Items> itemsList = new ArrayList<Items>();
    Items items_1 = new Items();
    items_1.setName("聯(lián)想筆記本");
    items_1.setPrice(6000f);
    items_1.setDetail("ThinkPad T430 聯(lián)想筆記本電腦！");
    
    Items items_2 = new Items();
    items_2.setName("蘋果手機");
    items_2.setPrice(5000f);
    items_2.setDetail("iphone6蘋果手機！");
    
    itemsList.add(items_1);
    itemsList.add(items_2);
    
    ModelAndView modelAndView = new ModelAndView();
    //在jsp頁面中通過itemsList取數(shù)據
    modelAndView.addObject("itemsList",itemsList);
    //指定視圖
    modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");

    return modelAndView;
}

}

ItemsController2.java

package cn.ztc.ssm.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 org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import cn.ztc.ssm.po.*;

public class ItemsController2 implements HttpRequestHandler{

@Override
public void handleRequest(HttpServletRequest request, HttpServletResponse responce) throws ServletException, IOException {

    //調用service查找數(shù)據庫，查詢商品列表，這里使用靜態(tài)數(shù)據模擬
    List<Items> itemsList = new ArrayList<Items>();
    Items items_1 = new Items();
    items_1.setName("聯(lián)想筆記本");
    items_1.setPrice(6000f);
    items_1.setDetail("ThinkPad T430 聯(lián)想筆記本電腦！");
    
    Items items_2 = new Items();
    items_2.setName("蘋果手機");
    items_2.setPrice(5000f);
    items_2.setDetail("iphone6蘋果手機！");
    
    itemsList.add(items_1);
    itemsList.add(items_2);
    
    //設置數(shù)據
    request.setAttribute("itemsList", itemsList);
    //設置轉發(fā)的視圖
    request.getRequestDispatcher("/WEB-INF/jsp/items/itemsList.jsp").forward(request,responce);
}

}

前端控制器從DispatcherSerlvet.properties這個文件中加載處理映射器、適配器、視圖解析器等組件，如果不在springmvc.xml中配置，使用默認加載的