JavaWeb_(SpringMVC框架)SpringMVC入门
Spring MVC又叫SpringWebMVC是一个轻量级的基于请求响应的表现层框架。它是Spring框架的一部分。SpringMVC与Struts2都可以替代原始Servlet技术。
SpringMVC是什么?
Spring Web MVC框架提供了MVC(模型 - 视图 - 控制器)架构和用于开发灵活和松散耦合的Web应用程序的组件。 MVC模式导致应用程序的不同方面(输入逻辑,业务逻辑和UI逻辑)分离,同时提供这些元素之间的松散耦合。 1、SpringMVC是极具代表性的MVC框架对初学者学习很有帮助;
a)模型(Model)封装了应用程序数据,通常它们将由Bean对象组成;
b)视图(View)负责渲染模型数据,一般来说它生成客户端浏览器可以解释HTML输出;
c)控制器(Controller)负责处理用户请求并构建适当的模型,并将其传递给视图进行渲染;
2、与Spring框架无缝集成;
3、对Servlet轻度封装,框架小巧轻便性能好;
4、可使用注解式开发,编码简洁;
5、便于测试;
6、具有本地化、国际化、类型转换、数据验证等功能;
7、使用人群十分广泛,在现在的企业招聘中属于java程序员必备技能之一;
为什么要使用SpringMVC?
1、 SpringMVC简要处理流程:
2、SpringMVC完整处理流程图
普通版
HelloSpringMVC:搭建SpringMVC HelloWorld项目
a)导包 –> 02_jar -> spring_jar整理 -> spring_mvc;
b)DispatcherServlet配置和拦截规则 (前端控制器、任务派发器、前端调度器);
<display-name>ssm_spring_mvc</display-name>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<!-- 读取springmvc配置文件 -->
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet> <servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!-- 开启注解扫描 -->
<context:component-scan base-package="com.Gary"></context:component-scan>
kanky
<!-- 配置视图解析器 配置viewName 前缀与后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>最近发消息的时候注意以下两个群就行,等到过年的时候她和爸妈、大哥二哥呆一起的时候在问下她想法,顺便提下我的,大概率不答应的话就要分了。现在还是和她在一起还是希望她好好的,不找她私聊就行,等到2号还是3号我按点回来~
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <display-name>ssm_spring_mvc</display-name>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<!-- 读取springmvc配置文件 -->
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet> <servlet-mapping>
<servlet-name>springmvc</servlet-name> <!-- 拦截规则
1 *.html *.do *.action 以扩展名方式进行拦截,不拦截静态资源, .jpg .css .js .png 什么情况下都可以使用
2 /不拦截 jsp 拦截静态资源 RESTFul 风格 静态资源放行 /*全部拦截 包括jsp 以及所有静态资源 不推荐使用 --> <url-pattern>*.Gary</url-pattern>
</servlet-mapping> <welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
web.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 开启注解扫描 -->
<context:component-scan base-package="com.Gary"></context:component-scan> <!-- 配置视图解析器 配置viewName 前缀与后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean> </beans>
springmvc.xml
在ItemController.java中配置一个Controller,通过访问list.gary请求跳转到item_list.jsp页面
@Controller
public class ItemController { //显示页面
@RequestMapping(value="list.gary")
public ModelAndView list() {
ModelAndView mav = new ModelAndView();
mav.setViewName("item_list");
return mav;
}
}
通过访问http://localhost:8080/ssm_spring_mvc/list.Gary跳转到item_list.jsp页面
package com.Gary.controller; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView; //商品管理 -> 游戏管理 @Controller
public class ItemController { //显示页面
@RequestMapping(value="list.gary")
public ModelAndView list() {
ModelAndView mav = new ModelAndView();
mav.setViewName("item_list");
return mav;
}
}
ItemController.java
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <display-name>ssm_spring_mvc</display-name>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<!-- 读取springmvc配置文件 -->
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet> <servlet-mapping>
<servlet-name>springmvc</servlet-name> <!-- 拦截规则
1 *.html *.do *.action 以扩展名方式进行拦截,不拦截静态资源, .jpg .css .js .png 什么情况下都可以使用
2 /不拦截 jsp 拦截静态资源 RESTFul 风格 静态资源放行 /*全部拦截 包括jsp 以及所有静态资源 不推荐使用 --> <url-pattern>*.Gary</url-pattern>
</servlet-mapping> <welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
web.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 开启注解扫描 -->
<context:component-scan base-package="com.Gary"></context:component-scan> <!-- 配置视图解析器 配置viewName 前缀与后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean> </beans>
springmvc.xml
使用SpringMVC向前台item_list.jsp传输数据
准备ItemInfo.java游戏信息bean
//id
private String item_id;
//name
private String item_name;
//type
private String item_type;
//price
private String item_price; //getter and setter
package com.Gary.bean; //游戏信息bean
public class ItemInfo { //id
private String item_id;
//name
private String item_name;
//type
private String item_type;
//price
private String item_price; public ItemInfo(String item_id, String item_name, String item_type, String string) {
super();
this.item_id = item_id;
this.item_name = item_name;
this.item_type = item_type;
this.item_price = string;
}
public String getItem_id() {
return item_id;
}
public void setItem_id(String item_id) {
this.item_id = item_id;
}
public String getItem_name() {
return item_name;
}
public void setItem_name(String item_name) {
this.item_name = item_name;
}
public String getItem_type() {
return item_type;
}
public void setItem_type(String item_type) {
this.item_type = item_type;
}
public String getItem_price() {
return item_price;
}
public void setItem_price(String item_price) {
this.item_price = item_price;
}
@Override
public String toString() {
return "ItemInfo [item_id=" + item_id + ", item_name=" + item_name + ", item_type=" + item_type
+ ", item_price=" + item_price + "]";
} }
ItemInfo.java
通过ItemController.java向前台传输数据
ModelAndView mav = new ModelAndView(); //传递数据
//准备一些测试数据 游戏id 游戏名称 游戏类型 价格
ItemInfo info1 = new ItemInfo("1", "英雄联盟", "MOBA", "0");
ItemInfo info2 = new ItemInfo("2", "守望先锋", "射击", "198");
ItemInfo info3 = new ItemInfo("3", "吃鸡", "射击", "98");
ItemInfo info4 = new ItemInfo("4", "魔兽世界", "MMORPG", "0");
ItemInfo info5 = new ItemInfo("5", "保卫萝卜", "休闲", "0"); //往ItemInfo集合中存放数据
List<ItemInfo> itemList = new ArrayList<ItemInfo>();
itemList.add(info1);
itemList.add(info2);
itemList.add(info3);
itemList.add(info4);
itemList.add(info5); //将游戏列表返回给前台
mav.addObject("itemList", itemList);
package com.Gary.controller; import java.util.ArrayList;
import java.util.List; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView; import com.Gary.bean.ItemInfo; //商品管理 -> 游戏管理 @Controller
public class ItemController { //显示页面
@RequestMapping(value="list.Gary")
public ModelAndView list() {
ModelAndView mav = new ModelAndView(); //传递数据
//准备一些测试数据 游戏id 游戏名称 游戏类型 价格
ItemInfo info1 = new ItemInfo("1", "英雄联盟", "MOBA", "0");
ItemInfo info2 = new ItemInfo("2", "守望先锋", "射击", "198");
ItemInfo info3 = new ItemInfo("3", "吃鸡", "射击", "98");
ItemInfo info4 = new ItemInfo("4", "魔兽世界", "MMORPG", "0");
ItemInfo info5 = new ItemInfo("5", "保卫萝卜", "休闲", "0"); //往ItemInfo集合中存放数据
List<ItemInfo> itemList = new ArrayList<ItemInfo>();
itemList.add(info1);
itemList.add(info2);
itemList.add(info3);
itemList.add(info4);
itemList.add(info5); //将游戏列表返回给前台
mav.addObject("itemList", itemList); mav.setViewName("item_list");
return mav;
}
}
ItemController.java
前台item_list.jsp页面数据的展示
<table class="table table-yuk2 toggle-arrow-tiny" id="footable_demo" data-filter="#textFilter" data-page-size="5">
<thead>
<tr>
<!--描述:商品数据标签-->
<th>ID</th>
<th>游戏名称</th>
<th>类型</th>
<th>原价</th>
</tr>
</thead>
<tbody>
<c:forEach items="${itemList }" var="item">
<tr>
<td>${item.item_id }</td>
<td>${item.item_name }</td>
<td>${item.item_type }</td>
<td>${item.item_price }</td> <td data-value="1">
<a herf="#" id="edit_btn" class="btn btn-xs btn-info" data-toggle="modal" data-target="#editLayer" onclick="editGoods('${item.item_id}')">修改</a>
<a herf="#" id="del_btn" class="btn btn-xs btn-danger" onclick="deleteGoods('${item.item_id}')">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
<tfoot class="hide-if-no-paging">
<tr>
<td colspan="5">
<ul class="pagination pagination-sm"></ul>
</td>
</tr>
</tfoot>
</table>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta charset="UTF-8">
<title>游戏管理后台</title>
<meta name="viewport" content="initial-scale=1.0,maximum-scale=1.0,user-scalable=no">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- bootstrap framework -->
<link href="${pageContext.request.contextPath }/css/bootstrap.min.css" rel="stylesheet" media="screen">
<!-- main stylesheet -->
<link href="${pageContext.request.contextPath }/css/main.min.css" rel="stylesheet" media="screen" id="mainCss">
<!-- elegant icons -->
<link href="${pageContext.request.contextPath }/css/style.css" rel="stylesheet" media="screen">
<!-- datepicker -->
<link href="${pageContext.request.contextPath }/css/datepicker3.css" rel="stylesheet" media="screen">
<!-- jBox -->
<link href="${pageContext.request.contextPath }/css/jbox.css" rel="stylesheet" media="screen">
<link href="${pageContext.request.contextPath }/css/noticeborder.css" rel="stylesheet" media="screen"> </head>
<body class="side_menu_active side_menu_expanded">
<div id="page_wrapper"> <!-- header -->
<header id="main_header">
<div class="container-fluid">
<!--logo-->
<div class="brand_section">
<a href="#"><img src="${pageContext.request.contextPath }/picture/logo01.png" alt="site_logo" width="108" height="40" style="margin-top: 5px"></a>
</div>
<div class="header_user_actions dropdown">
<div data-toggle="dropdown" class="dropdown-toggle user_dropdown">
<div class="user_avatar">
<img src="${pageContext.request.contextPath }/picture/head01.png" width="38" height="38">
</div>
<span class="caret"></span>
</div>
<ul class="dropdown-menu dropdown-menu-right">
<li><a href="#">个人中心</a></li>
<li><a href="#">注销</a></li>
</ul>
</div>
</div>
</header> <!-- main content -->
<div id="main_wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<div class="row">
<div class="col-md-10">
<table class="table table-yuk2 toggle-arrow-tiny" id="footable_demo" data-filter="#textFilter" data-page-size="5">
<thead>
<tr>
<!--描述:商品数据标签-->
<th>ID</th>
<th>游戏名称</th>
<th>类型</th>
<th>原价</th>
</tr>
</thead>
<tbody>
<c:forEach items="${itemList }" var="item">
<tr>
<td>${item.item_id }</td>
<td>${item.item_name }</td>
<td>${item.item_type }</td>
<td>${item.item_price }</td> <td data-value="1">
<a herf="#" id="edit_btn" class="btn btn-xs btn-info" data-toggle="modal" data-target="#editLayer" onclick="editGoods('${item.item_id}')">修改</a>
<a herf="#" id="del_btn" class="btn btn-xs btn-danger" onclick="deleteGoods('${item.item_id}')">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
<tfoot class="hide-if-no-paging">
<tr>
<td colspan="5">
<ul class="pagination pagination-sm"></ul>
</td>
</tr>
</tfoot>
</table>
</div>
</div>
</div>
</div>
</div>
</div> <!-- edit layer -->
<div class="modal fade" id="editLayer">
<div class="modal-dialog modal-content">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
<h4 class="modal-title">修改游戏信息</h4>
</div>
<div class="modal-body">
<!--游戏修改详情弹出层表单-->
<form class="form-horizontal" id="edit_item_form">
<!-- 游戏id隐藏域 -->
<input type="hidden" id="edit_item_id" name="item_id"/>
<!-- 游戏名称 -->
<div class="form-group">
<label for="edit_item_name" class="col-sm-2 control-label">游戏名称</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="edit_item_name" placeholder="游戏名称" name="item_name">
</div>
</div>
<!-- 游戏类型 -->
<div class="form-group">
<label for="edit_item_price" class="col-sm-2 control-label">类型</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="edit_item_price" placeholder="类型" name="item_price">
</div>
</div>
<!-- 游戏原价 -->
<div class="form-group">
<label for="edit_item_price" class="col-sm-2 control-label">原价</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="edit_item_price" placeholder="原价" name="item_price">
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default btn-sm" data-dismiss="modal">取消</button>
<button type="button" class="btn btn-primary btn-sm" onclick="updateItem()">确认修改</button>
</div>
</div>
</div>
</div> <!-- add layer -->
<div class="modal fade" id="addLayer">
<div class="modal-dialog modal-content">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
<h4 class="modal-title">新增游戏</h4>
</div>
<div class="modal-body">
<!--添加游戏弹出层表单-->
<form class="form-horizontal" id="add_item_form">
<!-- 游戏id隐藏域 -->
<input type="hidden" id="add_item_id" name="item_id"/>
<!-- 游戏名称 -->
<div class="form-group">
<label for="add_item_name" class="col-sm-2 control-label">游戏名称</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="add_item_name" placeholder="游戏名称" name="item_name">
</div>
</div>
<!-- 游戏类型 -->
<div class="form-group">
<label for="add_item_price" class="col-sm-2 control-label">类型</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="add_item_price" placeholder="类型" name="item_price">
</div>
</div>
<!-- 游戏原价 -->
<div class="form-group">
<label for="add_item_price" class="col-sm-2 control-label">原价</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="add_item_price" placeholder="原价" name="item_price">
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default btn-sm" data-dismiss="modal">取消</button>
<button type="button" class="btn btn-primary btn-sm" onclick="addItem()">确认修改</button>
</div>
</div>
</div>
</div> <!-- main menu -->
<nav id="main_menu">
<div class="menu_wrapper">
<ul>
<li class="first_level">
<a href="javascript:void(0)">
<span class="icon_document_alt first_level_icon"></span>
<span class="menu-title">游戏管理</span>
</a>
<ul>
<li class="submenu-title">游戏管理</li>
<!-- <li><a href="#" data-toggle="modal" data-target="#addLayer">商品添加</a></li> -->
<li><a href="${pageContext.request.contextPath }/item/myitemlist.do">游戏列表</a></li>
</ul>
</li>
</ul>
</div>
<div class="menu_toggle">
<span class="icon_menu_toggle">
<i class="arrow_carrot-2left toggle_left"></i>
<i class="arrow_carrot-2right toggle_right" style="display:none"></i>
</span>
</div>
</nav>
</div> <!-- jQuery -->
<script src="${pageContext.request.contextPath }/js/jquery.min.js"></script>
<!-- jQuery Cookie -->
<script src="${pageContext.request.contextPath }/js/jquerycookie.min.js"></script>
<!-- Bootstrap Framework -->
<script src="${pageContext.request.contextPath }/js/bootstrap.min.js"></script>
<!-- retina images -->
<script src="${pageContext.request.contextPath }/js/retina.min.js"></script>
<!-- switchery -->
<script src="${pageContext.request.contextPath }/js/switchery.min.js"></script>
<!-- typeahead -->
<script src="${pageContext.request.contextPath }/js/typeahead.bundle.min.js"></script>
<!-- fastclick -->
<script src="${pageContext.request.contextPath }/js/fastclick.min.js"></script>
<!-- match height -->
<script src="${pageContext.request.contextPath }/js/jquery.matchheight-min.js"></script>
<!-- scrollbar -->
<script src="${pageContext.request.contextPath }/js/jquery.mcustomscrollbar.concat.min.js"></script>
<!-- moment.js (date library) -->
<script src="${pageContext.request.contextPath }/js/moment-with-langs.min.js"></script>
<!-- Yukon Admin functions -->
<script src="${pageContext.request.contextPath }/js/yukon_all.min.js"></script>
<!-- page specific plugins -->
<!-- footable -->
<script src="${pageContext.request.contextPath }/js/footable.min.js"></script>
<script src="${pageContext.request.contextPath }/js/footable.paginate.min.js"></script>
<script src="${pageContext.request.contextPath }/js/footable.filter.min.js"></script>
<!-- datepicker -->
<script src="${pageContext.request.contextPath }/js/bootstrap-datepicker.js"></script>
<!-- jBox -->
<script src="${pageContext.request.contextPath }/js/jbox.min.js"></script> <script type="text/javascript">
$(function() {
//footable
yukon_footable.goodslist();
//datepicker
yukon_datepicker.p_forms_extended();
}) //修改弹框回显
function toEdit(id) {
$.ajax({
type:"post",
url:"${pageContext.request.contextPath }/item/toEdit",
data:{"id":id},
success:function(data) {
$("#edit_item_name").val(data.item_name);
$("#edit_item_type").val(data.item_type);
$("#edit_item_price").val(data.item_price);
},
dataType:"json"
});
}
//确认修改
function updateItem() {
$.post(
"${pageContext.request.contextPath }/item/update.do",
$("#edit_item_form").serialize(),
function(data){
alert("游戏信息更新成功!");
window.location.reload();
});
} //确认删除
function deleteItem(id) {
if(confirm('确实要删除该游戏吗?')) {
$.post(
"${pageContext.request.contextPath }/item/delete.do",
{"id":id},
function(data){
window.location.reload();
});
}
} //添加游戏
function addItem() {
$.post(
"${pageContext.request.contextPath }/item/save.do",
$("#add_item_form").serialize(),
function(data){
alert("游戏添加成功!");
window.location.reload();
});
}
</script>
</body>
</html>
item_list.jsp
springmvc.xml中的试图解析器,前缀解析器和后缀解析器
<!-- 配置视图解析器 配置viewName 前缀与后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd"> <!-- 开启注解扫描 -->
<context:component-scan base-package="com.Gary"></context:component-scan> <!-- 配置视图解析器 配置viewName 前缀与后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean> </beans>
springmvc.xml
@RequestMapping注解
- 多请求;
- 限定请求方法;
- 窄化(简化)请求路径;
1、使用@RequestMapping注解可以处理用户发起的请求
//显示页面 可以通过"/item/list.do"请求去访问,也可以通过"mylist.do"请求去访问
@RequestMapping(value={"/item/list.do","mylist.do"})
2、后边也可以加上method=RequestMethod.GET,表示这个方法接收表单的GET请求
@RequestMapping(value={"/item/list.do","mylist.do"}, method=RequestMethod.GET)
Controller中方法的返回值
- ModelAndView:返回模型和视图
- void:使用原生request,response
- String:
- 返回视图名 viewName;比较推荐使用
- 转发 forword;
- 重定向 redirect;
package com.Gary.controller; import java.io.IOException;
import java.util.ArrayList;
import java.util.List; import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView; import com.Gary.bean.ItemInfo; //商品管理 -> 游戏管理 @Controller
public class ItemController { //显示页面 可以通过"/item/list.do"请求去访问,也可以通过"mylist.do"请求去访问
@RequestMapping(value={"/item/list.do","mylist.do"}, method=RequestMethod.GET)
public ModelAndView list() {
ModelAndView mav = new ModelAndView(); //传递数据
//准备一些测试数据 游戏id 游戏名称 游戏类型 价格
ItemInfo info1 = new ItemInfo("1", "英雄联盟", "MOBA", "0");
ItemInfo info2 = new ItemInfo("2", "守望先锋", "射击", "198");
ItemInfo info3 = new ItemInfo("3", "吃鸡", "射击", "98");
ItemInfo info4 = new ItemInfo("4", "魔兽世界", "MMORPG", "0");
ItemInfo info5 = new ItemInfo("5", "保卫萝卜", "休闲", "0"); //往ItemInfo集合中存放数据
List<ItemInfo> itemList = new ArrayList<ItemInfo>();
itemList.add(info1);
itemList.add(info2);
itemList.add(info3);
itemList.add(info4);
itemList.add(info5); //将游戏列表返回给前台
mav.addObject("itemList", itemList); mav.setViewName("item_list");
return mav;
} //void类型
@RequestMapping(value="")
public void voidTest(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
//获取参数
request.getParameter(""); //转发
request.getRequestDispatcher("").forward(request, response); //重定向
response.sendRedirect(request.getContextPath()+"/xx.jsp"); } //String 转发
@RequestMapping("forwardString.do")
public String forwardString()
{
return "forward.mylist1.do";
} //String 转发
@RequestMapping("redirectString.do")
public String redirectString()
{
return "redirect:from.jsp";
} //String
@RequestMapping("testList.do")
public String testList(Model model)
{
//传递数据 //准备一些测试数据 游戏id 游戏名称 游戏类型 价格
ItemInfo info1 = new ItemInfo("1", "英雄联盟", "MOBA", "0");
ItemInfo info2 = new ItemInfo("2", "守望先锋", "射击", "198");
ItemInfo info3 = new ItemInfo("3", "吃鸡", "射击", "98");
ItemInfo info4 = new ItemInfo("4", "魔兽世界", "MMORPG", "0");
ItemInfo info5 = new ItemInfo("5", "保卫萝卜", "休闲", "0"); //往ItemInfo集合中存放数据
List<ItemInfo> itemList = new ArrayList<ItemInfo>();
itemList.add(info1);
itemList.add(info2);
itemList.add(info3);
itemList.add(info4);
itemList.add(info5); //将游戏列表返回给前台
model.addAttribute("itemList",itemList); return "itemList"; }
}
ItemController.java
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