springmvc注解映射器和适配器配置

springmvc注解映射器和适配器配置

环境搭建

请参考：http://blog.csdn.net/leisure_life/article/details/72832698

创建bean

Items .java

package com.ld.springmvc.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() {        return id;    }    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();    }}

创建spring配置文件

spring.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: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.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd        http://www.springframework.org/schema/tx        http://www.springframework.org/schema/tx/spring-tx.xsd        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop.xsd"> </beans>

配置前端控制器

在web.xml中配置

<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0"    xmlns="http://java.sun.com/xml/ns/javaee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">    <!-- springmvc前端控制器 -->  <servlet>    <servlet-name>beautiful</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <!-- 配置springmvc加载的配置文件（配置处理器映射器、适配器等） -->    <init-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:springmvc.xml</param-value>    </init-param>  </servlet>  <servlet-mapping>    <servlet-name>beautiful</servlet-name>    <url-pattern>*.action</url-pattern>  </servlet-mapping></web-app>

编写处理器

ItemsController.java

package com.ld.springmvc.controller;/** *  Handler */import java.util.ArrayList;import java.util.List;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import com.ld.springmvc.po.Items;public class ItemsController{    //编写商品查询方法    public ModelAndView findItemsList()throws Exception{        List<Items> itemsList = new ArrayList<Items>();        Items item = new Items();        item.setName("旺仔");        item.setPrice(10f);        Items item1 = new Items();        item1.setName("旺1仔");        item1.setPrice(11f);        Items item2 = new Items();        item2.setName("旺仔");        item2.setPrice(10f);        Items item3 = new Items();        item3.setName("旺2仔");        item3.setPrice(10f);        itemsList.add(item);        itemsList.add(item1);        itemsList.add(item2);        itemsList.add(item3);        ModelAndView modelAndView = new ModelAndView();        //类似于request的setAttribute        modelAndView.addObject("itemsList", itemsList);        //指定视图        modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");        return modelAndView;    }}

配置处理器映射器

spring.xml中配置

 <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>

配置处理器适配器

spring.xml中配置

   <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>

处理器添加注解

package com.ld.springmvc.controller;/** *  注解的Handler */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.ld.springmvc.po.Items;@Controller         //标识它是一个处理器public class ItemsController{    //编写商品查询方法    @RequestMapping("/findItemsList.action")//建议将url与方法名一致。实现的是方法findItemsList与url进行映射    public ModelAndView findItemsList()throws Exception{        List<Items> itemsList = new ArrayList<Items>();        Items item = new Items();        item.setName("旺仔");        item.setPrice(10f);        Items item1 = new Items();        item1.setName("旺1仔");        item1.setPrice(11f);        Items item2 = new Items();        item2.setName("旺仔");        item2.setPrice(10f);        Items item3 = new Items();        item3.setName("旺2仔");        item3.setPrice(10f);        itemsList.add(item);        itemsList.add(item1);        itemsList.add(item2);        itemsList.add(item3);        ModelAndView modelAndView = new ModelAndView();        //类似于request的setAttribute        modelAndView.addObject("itemsList", itemsList);        //指定视图        modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");        return modelAndView;    }}

配置处理器

在spring.xml中使用组件扫描器

<!-- 对于注解的Handler可以单个配置              实际开发中建议使用组件扫描          -->         <context:component-scan base-package="com.ld.springmvc.controller"/>

编写前端页面

itemsList.jsp

<%@ page language="java" import="java.util.*"  pageEncoding="UTF-8"%><%response.setContentType("text/html;charset = GB2312");request.setCharacterEncoding("gb2312");%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">    <title>查询商品列表</title>    <meta http-equiv="pragma" content="no-cache">    <meta http-equiv="cache-control" content="no-cache">    <meta http-equiv="expires" content="0">        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">    <meta http-equiv="description" content="This is my page">    <!--    <link rel="stylesheet" type="text/css" href="styles.css">    -->  </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="${pageContext.request.contentType }/item/editItem.action?id=${item.id}">修改</a></td>            </tr>            </c:forEach>        </table>    </form>  </body></html>

配置视图解析器

在spring.xml中配置视图解析器

<!-- 视图解析器             配置解析jsp的视图解析器,默认使用jstl标签        -->        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" />

测试

测试路径：http://127.0.0.1/springmvc_annotation/findItemsList.action

测试结果