SpringMVC入门程序

环境准备

springmvc版本：spring3.2

需要spring3.2所有jar（一定包括spring-webmvc-3.2.0.RELEASE.jar

工程结构

配置前端控制器(web.xml)

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <!-- 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>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
</web-app>

load-on-startup：表示servlet随服务启动；

url-pattern：*.action的请交给DispatcherServlet处理。

contextConfigLocation：指定springmvc配置的加载位置，如果不指定则默认加

载WEB-INF/[DispatcherServlet 的Servlet 名字]-servlet.xml。

创建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 ">

 
</beans>

 

配置非注解处理器适配器（配置在springmvc.xml）

<!-- 配置非注解的处理器适配器(SimpleControllerHandlerAdapter适配器要求编写的Handler实现 Controller接口) -->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

配置非注解处理器映射器（配置在springmvc.xml）

 <!-- 配置处理器映射器 -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>

配置视图解析器（配置在springmvc.xml）

 <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />

创建controller

因为使用SimpleControllerHandlerAdapter适配器，要求编写的controller实现Controller接口

使用一个list存放静态数据模拟

/**
 * 商品信息contronller
 * 实现Controller接口
 */
public class ItemsController implements Controller {
    @Override
    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {

        //调用service查找 数据库，查询商品列表，这里使用静态数据模拟
        List<Items> itemsList = new ArrayList<Items>();
        //向list中填充静态数据

        Items items_1 = new Items();
        items_1.setName("联想笔记本");
        items_1.setPrice(6000f);
        items_1.setDetail("ThinkPad T430 联想笔记本电脑！");

        Items items_2 = new Items();
        items_2.setName("苹果手机");
        items_2.setPrice(5000f);
        items_2.setDetail("iphone6苹果手机！");

        itemsList.add(items_1);
        itemsList.add(items_2);

        ModelAndView modelAndView  = new ModelAndView();
        modelAndView.addObject("itemsList", itemsList);
        modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");
        return modelAndView;
    }
}

 编写完controller之后，需要把controller交给spring容器管理（配置在springmvc.xml）

<!-- controller配置 -->
    <bean id="itemsController" name="/queryItems.action" class="com.company.springmvc.controller.ItemsController"/>

经过上面的一些列配置,springmvc.xml内容如下

<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 ">

    <!-- 配置非注解的处理器适配器(SimpleControllerHandlerAdapter适配器要求编写的Handler实现 Controller接口) -->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

    <!-- 配置处理器映射器 -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>

    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />

    <!-- controller配置 -->
    <bean id="itemsController" name="/queryItems.action" class="com.company.springmvc.controller.ItemsController"/>
</beans>

jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
         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" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>查询商品列表</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/item/queryItem.action" method="post">
    查询条件：
    <table width="100%" border=1>
        <tr>
            <td><input type="submit" value="查询"/></td>
        </tr>
    </table>
    商品列表：
    <table width="100%" border=1>
        <tr>
            <td>商品名称</td>
            <td>商品价格</td>
            <td>生产日期</td>
            <td>商品描述</td>
            <td>操作</td>
        </tr>
        <c:forEach items="${itemsList }" var="item">
            <tr>
                <td>${item.name }</td>
                <td>${item.price }</td>
                <td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
                <td>${item.detail }</td>

                <td><a href="${pageContext.request.contextPath }/item/editItem.action?id=${item.id}">修改</a></td>

            </tr>
        </c:forEach>

    </table>
</form>
</body>

</html>

至此，整个简单的例子就写完了，部署到tomcat运行测试