淘淘商城之springmvc和mybatis整合

一、需求

  使用springmvc和mybatis完成商品列表查询

二、整合思路

  springmvc+mybaits的系统架构:

  淘淘商城之springmvc和mybatis整合

  第一步:整合dao层

mybatis和spring整合,通过spring管理mapper接口;

使用mapper的扫描器自动扫描mapper接口在spring中进行注册

  第二步:整合service层

通过spring管理 service接口;

使用配置方式将service接口配置在spring配置文件中;

实现事务控制

  第三步:整合springmvc

由于springmvc是spring的模块,不需要整合

三、环境准备

  (1)数据库环境:mysql 5.7.25

      淘淘商城之springmvc和mybatis整合

  (2)数据库的系统环境:ubuntu 18.04.2

  (3)Java环境:JDK1.8.0_201;eclipse  2019-03

  (4)springmvc版本:4.0.0.RELEASE

  (5)所需要的jar包:数据库驱动包:mysql 5.1;

      mybatis的jar包;

      mybatis和spring整合包;

     log4j包;

      dbcp数据库连接池包;

      spring 4.0 所有jar包;jstl包

  (6)相关jar包及sql文件

      链接: https://pan.baidu.com/s/1LreOdB83aKkFnu0RK8TVuQ

      提取码: vuq3

四、工程结构

  淘淘商城之springmvc和mybatis整合

五、整合dao

  5.1 sqlMapConfig.xml  

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration> <!-- 全局setting配置,根据需要添加 --> <!-- 别名配置 -->
<typeAliases>
<!-- 批量扫描别名 -->
<package name="com.chuanye.ssm.pojo" />
</typeAliases> <!--
使用自动扫描器时,mapper.xml文件如果和mapper.java接口
在一个目录则此处不用定义mappers
-->
<!-- <mappers>
<package name="com.chuanye.ssm.mapper" />
</mappers> --> </configuration>

  5.2 applicationContext-dao.xml

  配置:1)数据源;2)SqlSessionFactory;3)mapper扫描器

<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 ">
<!-- 加载配置文件 -->
<context:property-placeholder
location="classpath:db.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="maxActive" value="30" />
<property name="maxIdle" value="5" />
</bean> <!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据库连接池 -->
<property name="dataSource" ref="dataSource" />
<!-- 加载mybatis的全局配置文件 -->
<property name="configLocation"
value="classpath:mybatis/SqlMapConfig.xml" />
</bean>
<!-- mapper扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage"
value="com.chuanye.ssm.mapper"></property>
<property name="sqlSessionFactoryBeanName"
value="sqlSessionFactory" />
</bean> </beans>

  5.3 逆向工程生成po类及mapper

  参考:https://www.cnblogs.com/soldierback/p/10606251.html

  淘淘商城之springmvc和mybatis整合

  将生成的文件拷贝至工程 中

  淘淘商城之springmvc和mybatis整合

  5.4 手动定义商品查询mapper

   (针对综合查询mapper,一般情况会有关联查询,建议自定义mapper)

  淘淘商城之springmvc和mybatis整合

    1)ItemsMapperCustom.xml

       sql语句:SELECT * FROM items  WHERE items.name LIKE '%笔记本%'  

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.chuanye.ssm.mapper.ItemsMapperCustom"> <!-- 定义商品查询的sql片段,就是商品查询条件 -->
<sql id="query_items_where">
<!-- 使用动态sql,通过if判断,满足条件进行sql拼接 -->
<if test="itemsCustom != null">
<if test="itemsCustom.name != null and itemsCustom.name != ''">
items.name LIKE '${itemsCustom.name}%'
</if>
</if>
</sql> <!-- 商品列表查询 -->
<!--
parameterType传入包装对象(包装了查询条件)
resultType建议使用扩展对象
-->
<select id="findItemsList" parameterType="com.chuanye.ssm.pojo.ItemsQueryVo"
resultType="com.chuanye.ssm.pojo.ItemsCustom">
SELECT items.* FROM items
<where>
<include refid="query_items_where"></include>
</where>
</select> </mapper>

    2)ItemsMapperCustom.java

package com.chuanye.ssm.mapper;

import java.util.List;

import com.chuanye.ssm.pojo.ItemsQueryVo;

public interface ItemsMapperCustom {
// 商品查询列表
public List<ItemsMapperCustom> findItemsList(ItemsQueryVo itemsQueryVo)
throws Exception;
}

    3)ItemsCustom.java

package com.chuanye.ssm.pojo;

/**
* <p>Title: ItemsCustom</p>
* <p>Description: 商品信息扩展类</p>
* <p>Copyright: Copyright (c) 2019</p>
* <p>Company: chuanye</p>
* @author freebird
* @version Mar 29, 20191:33:55 PM
*/
public class ItemsCustom extends Items {
// 添加商品信息的扩展属性
}

    4)ItemsQueryVo

package com.chuanye.ssm.pojo;

/**
* <p>Title: ItemsQueryVo</p>
* <p>Description: 商品包装对象</p>
* <p>Copyright: Copyright (c) 2019</p>
* <p>Company: chuanye</p>
* @author freebird
* @version Mar 29, 20191:32:07 PM
*/
public class ItemsQueryVo {
// 商品信息
private Items items; // 为了系统可扩展性,对原始生成的pojo进行扩展
private ItemsCustom itemsCustom; public Items getItems() {
return items;
} public void setItems(Items items) {
this.items = items;
} public ItemsCustom getItemsCustom() {
return itemsCustom;
} public void setItemsCustom(ItemsCustom itemsCustom) {
this.itemsCustom = itemsCustom;
}
}

六、整合service(让spring管理service接口)

  6.1 定义service接口

package com.chuanye.ssm.service;

import java.util.List;

import com.chuanye.ssm.pojo.ItemsCustom;
import com.chuanye.ssm.pojo.ItemsQueryVo; /**
* <p>Title: ItemsSerevice</p>
* <p>Description: 商品管理service接口</p>
* <p>Copyright: Copyright (c) 2019</p>
* <p>Company: chuanye</p>
* @author freebird
* @version Mar 29, 20192:02:22 PM
*/
public interface ItemsSerevice {
// 商品查询列表
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo)
throws Exception;
}
package com.chuanye.ssm.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import com.chuanye.ssm.mapper.ItemsMapperCustom;
import com.chuanye.ssm.pojo.ItemsCustom;
import com.chuanye.ssm.pojo.ItemsQueryVo;
import com.chuanye.ssm.service.ItemsSerevice; /**
* <p>Title: ItemsServiceImpl</p>
* <p>Description: 商品管理service实现</p>
* <p>Copyright: Copyright (c) 2019</p>
* <p>Company: chuanye</p>
* @author freebird
* @version Mar 29, 20192:05:28 PM
*/
public class ItemsServiceImpl implements ItemsSerevice { @Autowired
private ItemsMapperCustom ItemsMapperCustom; @Override
public List<ItemsCustom> findItemsList(ItemsQueryVo itemsQueryVo) throws Exception {
// TODO Auto-generated method stub
return ItemsMapperCustom.findItemsList(itemsQueryVo);
} }

  6.2 在spring容器配置service(applicationContext-service.xml)

<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 "> <!-- 商品管理service -->
<bean id="itemsService" class="com.chuanye.ssm.service.impl.ItemsServiceImpl">
</bean> </beans>

  6.3 事务控制(applicationContext-transaction.xml)

<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 "> <!-- 事务管理器,对mybatis操作数据库事务控制,spring使用jdbc的事务控制类 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean> <!-- 通知 -->
<tx:advice id="txAdvice"
transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="find*" propagation="SUPPORTS"
read-only="true" />
<tx:method name="get*" propagation="SUPPORTS"
read-only="true" />
<tx:method name="select*" propagation="SUPPORTS"
read-only="true" />
</tx:attributes>
</tx:advice> <!-- 切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* com.chuanye.ssm.service.impl.*.*(..))" />
</aop:config> </beans>

七、整合springmvc(创建springmvc.xml文件,配置处理器映射器、适配器、视图解析器)

  7.1 springmvc.xml

<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 "> <!-- 扫描controller包 -->
<context:component-scan base-package="com.chuanye.ssm.controller" /> <!-- 《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"/> -->
<!--
使用 mvc:annotation-driven代替上边注解映射器和注解适配器配置
mvc:annotation-driven默认加载很多的参数绑定方法,比如json转换
解析器就默认加载了,如果使用mvc:annotation-driven不用配置上边的
RequestMappingHandlerMapping和RequestMappingHandlerAdapter
实际开发时使用mvc:annotation-driven
-->
<mvc:annotation-driven></mvc:annotation-driven> <!-- 《视图解析器》 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
<!-- 配置jsp路径的前缀 -->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 配置jsp路径的后缀 -->
<property name="suffix" value=".jsp"/>
</bean> </beans>

  7.2 配置前端控制器并加载spring容器(web.xml)

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>springmvc_mybatis</display-name> <!-- 加载spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> <!-- springmvc前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--
contextConfigLocation配置springmvc加载的配置
文件(配置处理器映射器、适配器等等) 如果不 配置contextConfigLocation,
默认加载的是/WEB-INF/servlet名称-serlvet.xml(springmvc-servlet.xml)
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet> <servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!--
第一种:*.action,访问以.action结尾 由DispatcherServlet进行解析;
第二种:/,所以访问的地址都由DispatcherServlet进行解析,对于静态文件的解析需要配置不
让DispatcherServlet进行解析 使用此种方式可以实现 RESTful风格的url;
第三种:/*,这样配置不对,使用这种配置,最终要转发到一个jsp页面时,
仍然会由DispatcherServlet解析jsp地址,不能根据jsp页面找到handler,会报错
-->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>

  7.3 编写controller

package com.chuanye.ssm.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView; import com.chuanye.ssm.pojo.ItemsCustom;
import com.chuanye.ssm.service.ItemsSerevice; /**
* <p>Title: ItemsController</p>
* <p>Description: 商品管理Controller</p>
* <p>Copyright: Copyright (c) 2019</p>
* <p>Company: chuanye</p>
* @author freebird
* @version Mar 29, 20192:43:23 PM
*/
@Controller
public class ItemsController { @Autowired
private ItemsSerevice itemsSerevice; // 商品查询
@RequestMapping("/queryItems")
public ModelAndView queryItems() throws Exception { // 调用service查找 数据库,查询商品列表
List<ItemsCustom> itemsList = itemsSerevice.findItemsList(null); // 返回ModelAndView
ModelAndView modelAndView = new ModelAndView();
// 相当 于request的setAttribut,在jsp页面中通过itemsList取数据
modelAndView.addObject("itemsList", itemsList); // 指定视图
// 下边的路径,如果在视图解析器中配置jsp路径的前缀和jsp路径的后缀,修改为
// modelAndView.setViewName("/WEB-INF/jsp/items/itemsList.jsp");
// 上边的路径配置可以不在程序中指定jsp路径的前缀和jsp路径的后缀
modelAndView.setViewName("items/itemsList"); return modelAndView; }
}

  7.4 编写jsp(itemsList.jsp)

<%@ 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>  

八、运行测试

淘淘商城之springmvc和mybatis整合

九、项目目录

  淘淘商城之springmvc和mybatis整合

  

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