springmvc的非注解开发简单示例。
接着上一篇：http://notemi.cn/springmvc---non-annotation-development-1.html
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!-- 1.配置前端控制器 -->
<servlet>
<servlet-name>springmvc-dispatcherservlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation配置springmvc加载的配置文件（处理器映射器、适配器等）-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc-dispatcherservlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc-dispatcherservlet</servlet-name>
<!-- url-pattern 的三种配置方式：
第一种：*.action ：访问.action结尾的资源时，由 DispatcherServlet 解析
第二种：/ ：访问所有资源都由 DispatcherServlet 解析，对于html、css、js、image等静态资源，需要配置不让 DispatcherServlet 解析
第三种：/* ：注意这种方式错误，因为使用这种配置方式，最终咬转发到一个jsp页面时，仍然会由 DispatcherServlet 解析 jsp 地址，
不能根据jsp页面找到处理的handler，会报错。-->
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
springmvc配置文件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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 5.配置视图解析器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/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 4.配置controller -->
<bean id="userListId" name="/userList" class="cn.notemi.controller.UserTestController"/>
<bean id="userListId2" class="cn.notemi.controller.UserTestController2"/>
<!-- 3.处理映射器（非注解两种，可并存） -->
<!-- （1）根据bean的name进行查找Handler 将action的url配置在bean的name中 -->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
<!-- （2）简单url映射 -->
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/userList1">userListId</prop>
<prop key="/userList2">userListId</prop>
<prop key="/userList3">userListId2</prop>
</props>
</property>
</bean>
<!-- 2.处理器适配器（非注解的两种） -->
<!-- （1）要求handler实现controller接口-->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
<!-- （2）要求handler实现HttpRequestHandler接口 -->
<bean class="org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter"/>
</beans>controller开发
package cn.notemi.controller;
import cn.notemi.po.User;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Flicker on 2017/1/17 0017.
*/
public class UserTestController implements Controller {
public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
//商品列表
List<User> userList = new ArrayList<User>();
User user1 = new User();
user1.setId(1);
user1.setUsername("张三");
user1.setPassword("123");
user1.setEmail("1@qq.com");
User user2 = new User();
user2.setId(2);
user2.setUsername("李四");
user2.setPassword("123");
user2.setEmail("1@qq.com");
userList.add(user1);
userList.add(user2);
//创建modelAndView准备填充数据、设置视图
ModelAndView modelAndView = new ModelAndView();
//填充数据
modelAndView.addObject("userList", userList);
//视图
modelAndView.setViewName("user/index");
return modelAndView;
}
}package cn.notemi.controller;
import cn.notemi.po.User;
import org.springframework.web.HttpRequestHandler;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Flicker on 2017/1/17 0017.
*/
public class UserTestController2 implements HttpRequestHandler {
public void handleRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//商品列表
List<User> userList = new ArrayList<User>();
User user1 = new User();
user1.setId(1);
user1.setUsername("张三");
user1.setPassword("123");
user1.setEmail("1@qq.com");
User user2 = new User();
user2.setId(2);
user2.setUsername("李四");
user2.setPassword("123");
user2.setEmail("1@qq.com");
userList.add(user1);
userList.add(user2);
//填充数据
request.setAttribute("userList", userList);
//视图
request.getRequestDispatcher("/WEB-INF/pages/user/index.jsp").forward(request,response);
//从上边可以看出此适配器器的handleRequest方法没有返回ModelAndView，可通过response修改定义响应内容，比如返回json数据：
//response.setCharacterEncoding("utf-8");
//response.setContentType("application/json;charset=utf-8");
//response.getWriter().write("json串");
}
}视图开发
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2017/1/17 0017
Time: 下午 2:55
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<html>
<head>
<title>Title</title>
</head>
<body>
<table>
<c:forEach items="${userList}" var="userList">
<tr>
<td>${userList.id}</td>
<td>${userList.username}</td>
<td>${userList.password}</td>
<td>${userList.email}</td>
</tr>
</c:forEach>
</table>
</body>
</html>
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