SpringMvc的入门案例

开发环境

配置前端控制器web.xml

<?xmlversion="1.0"encoding="UTF-8"?> <web-appversion="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>   <!-- SpringMvc前端控制器 -->   <servlet>   <servlet-name>springmvc</servlet-name>   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>   <!-- contextConfigLocation配置springmvc加载的配置文件（配置处理器映射器，适配器）       如果不配置，则默认加载：/WEB-INF/springmvc_servlet.xml   -->   <init-param>       <param-name>contextConfigLocation</param-name>       <param-value>classpath:springmvc.xml</param-value>   </init-param>   </servlet>   <servlet-mapping>   <servlet-name>springmvc</servlet-name>   <!--   1.*.action以.action   2./ 全部    -->   <url-pattern>*.action</url-pattern>   </servlet-mapping> </web-app>

配置springmvc.xml核心文件

<beansxmlns="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Handle -->      <beanname="/queryItems.action"class="com.cloud.ctroller.ItemController1"/>       <!-- 处理器映射器 -->      <beanclass="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>       <!-- 处理器适配器         必须实现：HandlerAdapter接口       -->      <beanclass="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>       <!-- 试图解析器         默认使用jstl标签解析JSP页面，所以要导入jstl包       -->      <beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"/> </beans>

编写一个PO类

package com.cloud.po; import java.util.Date; publicclass Items {     private Integerid;     private Stringname;     private Floatprice;     private Stringpic;     private Datecreatetime;     private Stringdetail;     //此处省略get()和set()方法 }

开发处理器

package com.cloud.ctroller; 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.cloud.po.Items; /**  * 实现Controller接口的处理器  * @author Administrator  *  */ publicclass ItemController1 implements Controller{    @Override    public ModelAndView handleRequest(HttpServletRequest request,          HttpServletResponse response)throws Exception {       //创建几条静态数据       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);       //返回modelAndView       ModelAndView modelAndView = new ModelAndView();       modelAndView.addObject("itemsList", itemsList);       //指定试图       modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");       return modelAndView;    } }

编写一个jsp显示页面

<%@pagelanguage="java"contentType="text/html; charset=UTF-8"     pageEncoding="UTF-8"%> <%@tagliburi="http://java.sun.com/jsp/jstl/core"prefix="c"%> <%@tagliburi="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%> <!DOCTYPEhtmlPUBLIC"-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <metahttp-equiv="Content-Type"content="text/html; charset=UTF-8"> <title>查询商品列表</title> </head> <body> <formaction="${pageContext.request.contextPath }/item/queryItem.action"method="post"> 查询条件： <tablewidth="100%"border=1> <tr> <td><inputtype="submit"value="查询"/></td> </tr> </table> 商品列表： <tablewidth="100%"border=1> <tr>    <td>商品名称</td>    <td>商品价格</td>    <td>生产日期</td>    <td>商品描述</td>    <td>操作</td> </tr> <c:forEachitems="${itemsList }"var="item"> <tr>    <td>${item.name }</td>    <td>${item.price }</td>    <td><fmt:formatDatevalue="${item.createtime}"pattern="yyyy-MM-dd HH:mm:ss"/></td>    <td>${item.detail }</td>       <td><ahref="${pageContext.request.contextPath }/item/editItem.action?id=${item.id}">修改</a></td> </tr> </c:forEach> </table> </form> </body> </html>

参考文章：

http://blog.youkuaiyun.com/dzy21/article/details/51864486    //springmvc框架原理图解