SpringMVC入门小示例

开发流程：
1.创建web工程
2.导入jar包
3.配置springmvc.xml,配置注解扫描
4.在web.xml配置SpringMVC前端控制器、SpringMVC核心配置文件
5.编写pojo类，Controller类，jsp页面

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1.创建web工程

2.导入jar包

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3.配置springmvc.xml,配置注解扫描

    <?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:dubbo="http://code.alibabatech.com/schema/dubbo" 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://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

    <!-- @Controller注解扫描 -->
    <context:component-scan base-package="com.sise.controller"></context:component-scan>

    </beans>

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4.在web.xml配置SpringMVC前端控制器、SpringMVC核心配置文件

   <!-- 加载spring容器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:ApplicationContext-*.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>


  <!-- springmvc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>
    <!-- 在tomcat启动的时候就加载这个servlet -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMvc</servlet-name>
    <!-- 
    *.action    代表拦截后缀名为.action结尾的
    /           拦截所有但是不包括.jsp
    /*          拦截所有包括.jsp
     -->
    <url-pattern>*.action</url-pattern>
  </servlet-mapping>

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5.编写pojo类，Controller类，jsp页面

pojo类

private Integer id;
    private String name;
    private Float price;
    private String pic;
    private Date createtime;
    private String detail;
    ........

Controller类

@Controller
public class ItemsController {
    @RequestMapping("/list")
    public ModelAndView ItemsList() throws Exception {
        List<Items> itemList = new ArrayList<Items>();

    // 商品列表
    Items items_1 = new Items();
    items_1.setName("小米手机");
    items_1.setPrice(6000f);
    items_1.setDetail("小米MIX2！");

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

    itemList.add(items_1);
    itemList.add(items_2);

    ModelAndView modelAndView = new ModelAndView();
    modelAndView.addObject("itemList", itemList);
    modelAndView.setViewName("/itemList.jsp");
    return modelAndView;
}

}

6.测试

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