Spring 整合MyBatis详解

1.db.properties（数据库的连接配置）

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://10.11.111.111:1234/Test?characterEncoding=utf-8（注：test是数据库名）
jdbc.username=root（注：用户名）
jdbc.password=root（注：密码）

2.applicationContext.xml 中引入applicationContext-dao.xml加下面一段话

    <import resource="applicationContext-dao.xml"/> 

3. 创建SqlMapConfig.xml（注：空的就行）

    <?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>

    </configuration>

4.连接数据库applicationContext-dao.xml的配置

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
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-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <context:annotation-config/>
  <!--   扫描包进行注入 -->
    <context:component-scan base-package="com.123.abc" />

<!-- 加载读取配置文件 -->
<context:property-placeholder location="classpath:db.properties" />（注：引入的1）

<!-- 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="10" />
<property name="maxIdle" value="5" />
</bean>

<!-- 配置SqlSessionFactory -->
<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:SqlMapConfig.xml" /><!-- 引入2的配置-->
</bean>

<!-- 配置Mapper扫描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 配置Mapper扫描包 -->

<property name="basePackage" value="com.123.abc.mapper" /><!-- 引入5的mapper包的位置 -->

</bean>

</beans>

5.mapper

    a.存放userMapper接口（加注解：@Repository）

    b.存放userMapper.xml

6.pom.xml

<!--MySQL连接器--> 
<dependency> 
<groupId>mysql</groupId> 
<artifactId>mysql-connector-java</artifactId> 
<version>5.1.41</version> 
</dependency>
<!-- dbcp2 --> 
<dependency> 
<groupId>org.apache.commons</groupId> 
<artifactId>commons-dbcp2</artifactId> 
<version>2.0.1</version> 
</dependency>
<!-- dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- pool -->
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>