整合Spring和MyBatis
在resources包下的resource子包创建jdbc.properties，用于配置数据库的连接信息
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/seckill?useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=root在resources/spring目录下创建Spring关于DAO层的配置文件spring-dao.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"
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">
<!--配置整合mybatis过程 1.配置数据库相关参数 -->
<context:property-placeholder location="classpath:resource/jdbc.properties" />
<!--2.数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close">
<!--配置连接池属性 -->
<property name="driverClassName" value="${jdbc.driver}" />
<!-- 基本属性 url、user、password -->
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="maxActive" value="10" />
<property name="minIdle" value="5" />
</bean>
<!--约定大于配置 -->
<!--３.配置SqlSessionFactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--往下才是mybatis和spring真正整合的配置 -->
<!--注入数据库连接池 -->
<property name="dataSource" ref="dataSource" />
<!--配置mybatis全局配置文件:mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />
<!--扫描entity包,使用别名,多个用;隔开 -->
<property name="typeAliasesPackage" value="org.seckill.entity" />
<!--扫描sql配置文件:mapper需要的xml文件 -->
<property name="mapperLocations" value="classpath:mapper/*.xml" />
</bean>
<!--４:配置扫描Dao接口包,动态实现DAO接口,注入到spring容器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入SqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
<!-- 给出需要扫描的Dao接口 -->
<property name="basePackage" value="org.seckill.dao" />
</bean>
</beans>在src/main/resources目录下创建包mybatis配置SqlMapConfig.xml（配置MyBatis的全局属性）
<?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>
<!--配置全局属性 -->
<settings>
<!--使用jdbc的getGeneratekeys获取自增主键值，默认是false 当inert一条记录时我们是不插入id的，id是通过自增去赋值的
当插入完后想得到该插入记录的id时可以调用jdbc的getGeneratekeys -->
<setting name="useGeneratedKeys" value="true" />
<!--使用列别名替换列名 默认值为true（可以不用写出来，这里写出来只是为了讲解该配置的作用） select name as title(实体中的属性名是title)
form table; 开启后mybatis会自动帮我们把表中name的值赋到对应实体的title属性中 -->
<setting name="useColumnLabel" value="true" />
<!--开启驼峰命名转换Table:create_time到 Entity(createTime) -->
<setting name="mapUnderscoreToCamelCase" value="true" />
</settings>
</configuration>在resources/spring目录下创建Spring关于service层的配置文件spring-service.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: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">
<!--扫描service包下所有使用注解的类型 -->
<context:component-scan base-package="org.seckill.service" />
<!--配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据库连接池 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!--配置基于注解的声明式事务 默认使用注解来管理事务行为 -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>在resources/spring目录下创建Spring关于web层的配置文件spring-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"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--配置spring mvc -->
<!--1,开启springmvc注解模式 a.自动注册DefaultAnnotationHandlerMapping,AnnotationMethodHandlerAdapter
b.默认提供一系列的功能:数据绑定，数字和日期的format@NumberFormat,@DateTimeFormat c:xml,json的默认读写支持 -->
<mvc:annotation-driven />
<!--2.静态资源默认servlet配置 -->
<!-- 1).加入对静态资源处理：js,gif,png 2).允许使用 "/" 做整体映射 -->
<mvc:default-servlet-handler />
<!--3：配置JSP 显示ViewResolver -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!--4:扫描web相关的controller -->
<context:component-scan base-package="org.seckill.web" />
</beans>使用logback来输出日志信息，在resources包下创建logback.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<!-- encoders are by default assigned the type
ch.qos.logback.classic.encoder.PatternLayoutEncoder -->
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>
</appender>
<root level="debug">
<appender-ref ref="STDOUT" />
</root>
</configuration>配置web.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" metadata-complete="true">
<!--用maven创建的web-app需要修改servlet的版本为3.1 -->
<display-name>大众点评</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 解决post乱码 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--配置DispatcherServlet -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置SpringMVC 需要配置的文件 spring-dao.xml，spring-service.xml,spring-web.xml
MyBatis -> Spring -> SpringMVC -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext-*.xml</param-value>
</init-param>
<!-- 当值为0或者大于0时，表示容器在应用启动时就加载这个servlet；当是一个负数时或者没有指定时，则指示容器在该servlet被选择时才加载 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<!--默认匹配所有请求 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
通过IDE工具快速生成Junit单元测试，然后在各个方法里写测试代码。
创建一个父类，其余类继承便可以直接使用
package org.seckill;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
*
* 配置spring和junit整合，junit启动时加载springIOC容器
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
//告诉junit-spring配置文件的位置
@ContextConfiguration({"classpath:spring/spring-dao.xml","classpath:spring/spring-service.xml"})
public class BaseTest {
}