Spring mvc注解式开发入门

java类

package com.cloud.po;
import Java.util.Date;
public class Items {
    private Integer id;
    private String name;
    private Float price;
    private String pic;
    private Date createtime;
    private String detail;
    public Integer getId() {
        returnid;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }
    public Float getPrice() {
        return price;
    }
    public void setPrice(Float price) {
        this.price = price;
    }
    public String getPic() {
        return pic;
    }
    public void setPic(String pic) {
        this.pic = pic == null ? null : pic.trim();
    }
    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 == null ? null : detail.trim();
    }
}

Spring mvc配置文件

<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 ">
      <!-- 注解开发SpringMvc模式 -->
      <!-- 注解映射器 -->
      <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
      <!-- 注解适配器 -->
      <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>
      <!-- 可以代替上面2个配置 :还会默认加载许多参数绑定的方法，实际开发中的选择-->
      <!--
      <mvc:annotation-driven></mvc:annotation-driven>
       -->
      <!-- 可以扫描controller、service、...
         这里让扫描controller，指定controller的包
      -->
      <context:component-scan base-package="com.cloud.ctroller"></context:component-scan>
</beans>

编写hander

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.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.cloud.po.Items;
@Controller
public class ItemController2{
   @RequestMapping("/queryItems")
   public ModelAndView queryItems(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;
   }
}

前端展示页面

<%@ 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>