SpringMVC入门案例

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非注解方式
项目结构图
这里写图片描述

dispatcher-servlet.xml

<?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">    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>/WEB-INF/applicationContext.xml</param-value>    </context-param>    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <!--SpringMVC前端控制器配置-->    <servlet>        <servlet-name>dispatcher</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>dispatcher</servlet-name>        <url-pattern>*.action</url-pattern>    </servlet-mapping></web-app>

dispatcher-servlet.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"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <!--配置Heandler-->    <bean name="/queryItems.action" class="ssm.controller.ItemsController1"/>    <!--处理器适配器-->    <!--所有的处理器适配器都实现了HandlerAdapter接口-->    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>    <!--处理器映射器-->    <!--将Bean的name作为URL进行查找，需要在配置handler时指定beanname(就是url)-->    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>    <!--视图解析器-->    <!--配置解析jsp的视图解析器-->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"/></beans>

ItemsController1.java

package ssm.controller;/** * Created with IntelliJ IDEA. * User: YEN * Date: 2016/8/6 * Time: 10:40 */import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;import ssm.pojo.Items;import java.util.ArrayList;import java.util.List;/** * */public class ItemsController1 implements Controller{    @Override    public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse) throws Exception {        //调用service查找数据库，查询商品列表 这里使用静态数据模拟        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();        //相当于request.setAttribut 在jsp中通过itemsList取数据        modelAndView.addObject("itemsList",itemsList);        //指定视图        modelAndView.setViewName("items/itemsList.jsp");        return modelAndView;    }}

items.java

package ssm.pojo;import java.util.Date;/** * Created with IntelliJ IDEA. * User: YEN * Date: 2016/8/6 * Time: 10:49 */public class Items {    private Integer id;    private String name;    private Float price;    private String pic;    private Date createtime;    private String detail;    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    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;    }    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());    }}

itemsList.jsp

<%--  Created by IntelliJ IDEA.  User: YEN  Date: 2016/8/6  Time: 11:00 --%><%@ page contentType="text/html;charset=UTF-8" language="java" %><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"  prefix="fmt"%><html><head>    <title>查询商品列表</title></head><body><form action="${pageContext.request.contextPath }/queryItems.action" method="post">    查询条件：    <table width="100%" border=1>        <tr>            <td>                <input type="submit" value="查询"/></td>        </tr>    </table>    商品列表：    <table width="100%" border=1>        <tr>            <td>商品名称</td>            <td>商品价格</td>            <td>生产日期</td>            <td>商品描述</td>            <td>操作</td>        </tr>        <c:forEach items="${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="${pageContext.request.contextPath }/editItem.action?id=${item.id}">修改</a></td>            </tr>        </c:forEach>    </table></form></body></html>

注解方式

dispatcher-servlet.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:mvc="http://www.springframework.org/schema/tool"       xmlns:util="http://www.springframework.org/schema/util"       xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <!--加载注解的Heandler-->    <!--实际开发中建议组件扫描-->    <context:component-scan base-package="ssm.controller"> </context:component-scan>    <!--mvc:annotation-driven默认加载很多的参数绑定方法-->    <!--<mvc:annotation></mvc:annotation>-->    <!--注解适配器-->    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>    <!--注解映射器-->    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>    <!--视图解析器-->    <!--配置解析jsp的视图解析器-->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"/></beans>

ItemsController3.java

package ssm.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import ssm.pojo.Items;import java.util.ArrayList;import java.util.List;/** * Created with IntelliJ IDEA. * User: YEN * Date: 2016/8/6 * Time: 13:28 *///标记它是一个注解 @Controller标识@Controllerpublic class ItemsController3 {    //商品查询列表    // @RenderMapping("/queryItems")实现的是方法和URL的映射    @RequestMapping("/queryItems")    public ModelAndView queryItems() throws Exception{        //调用service查找数据库，查询商品列表 这里使用静态数据模拟        List<Items> itemsList=new ArrayList<Items>();        //向list中填充静态数据        Items items_1 = new Items();        items_1.setName("联想电脑");        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();        //相当于request.setAttribut 在jsp中通过itemsList取数据        modelAndView.addObject("itemsList",itemsList);        //指定视图        modelAndView.setViewName("items/itemsList.jsp");        return modelAndView;    }}

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