01.SpringMVC快速入门

1.导入jar包

2.在web.xml中配置前端控制器

  <!-- spring前端控制器 -->
  <servlet>
      <servlet-name>springmvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <!-- 加载配置文件 -->
      <!-- 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>

  <!-- 映射 设置所有以action结尾的请求进入SpringMVC-->
  <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>*.action</url-pattern>
  </servlet-mapping>

3.创建配置文件和包结构

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: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">

</beans>

4.创建实体类和controller

Item.java

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;

        set/get....
}

ItemController.java

@Controller
public class ItemController {

    @RequestMapping(value="/iteam/findAllItem.action")
    public ModelAndView findALLItem(){

        ModelAndView mav = new ModelAndView();

        //模拟查找数据
        List<Item> list = new ArrayList<>();
        list.add(new Item(1, "1华为 荣耀8", 2399, new Date(), "质量好！1"));
        list.add(new Item(2, "2华为 荣耀8", 2399, new Date(), "质量好！2"));
        list.add(new Item(3, "3华为 荣耀8", 2399, new Date(), "质量好！3"));
        list.add(new Item(4, "4华为 荣耀8", 2399, new Date(), "质量好！4"));
        list.add(new Item(5, "5华为 荣耀8", 2399, new Date(), "质量好！5"));
        list.add(new Item(6, "6华为 荣耀8", 2399, new Date(), "质量好！6"));

        mav.addObject("itemList", list);
        mav.setViewName("/WEB-INF/jsp/itemList.jsp");
        return mav;
    }

}

5.在springmvc.xml中添加扫描注释

<context:component-scan base-package="com.springmvc.controller"/>

6.加载的服务器，启动服务器测试