Spring web mvc和Struts2都属于表现层的框架,它是Spring框架的一部分,我们可以从Spring的整体结构中看得出来,如下图:
Springmvc处理流程,如下图所示:
入门程序
1.创建web工程,不使用SpringMVC模板。
2、设置项目名称为SpringMVCDemo
3、导入jar包
4、jar包引入到项目中
5、在src下添加一个Spring配置文件,项目目录结构如下:
6、SpringMVC本身就是Spring的子项目,对Spring兼容性很好,不需要做很多配置。这里只配置一个Controller扫描就可以了,让Spring对页面控制层Controller进行管理。
<?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:p="http://www.springframework.org/schema/p" 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-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 配置controller扫描包 --> <context:component-scan base-package="com.yyb.controller" /> </beans>
7、 配置前端控制器。配置SpringMVC的前端控制器DispatcherServlet。在web.xml中:
<?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_3_1.xsd" version="3.1"> <!-- 配置SpringMVC前端控制器 --> <servlet> <servlet-name>springmvc-demo</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 指定SpringMVC配置文件 --> <!-- SpringMVC的配置文件的默认路径是/WEB-INF/${servlet-name}-servlet.xml --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc-demo</servlet-name> <!-- 设置所有以action结尾的请求进入SpringMVC --> <url-pattern>*.action</url-pattern> </servlet-mapping> </web-app>
8、在index.jsp中添加以下代码:
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%> <html> <head> <title>$Title$</title> </head> <body> <table width="100%" border=1> <tr> <td>商品名称</td> <td>商品价格</td> <td>生产日期</td> <td>商品描述</td> </tr> <c:forEach items="${list}" 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> </tr> </c:forEach> </table> </body> </html>
9、创建pojo,创建商品pojo:
package com.yyb.bean; import java.util.Date; /** * Created by yang on 2017/8/12. */ public class Item { // 商品id private int id; // 商品名称 private String name; // 商品价格 private double price; // 商品创建时间 private Date createtime; // 商品描述 private String detail; public Item() {} public Item(int id, String name, double price, Date createtime, String detail) { this.id = id; this.name = name; this.price = price; this.createtime = createtime; this.detail = detail; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public Date getCreatetime() { return createtime; } public void setCreatetime(Date createtime) { this.createtime = createtime; } public String getDetail() { return detail; } public void setDetail(String detail) { this.detail = detail; } }