Mybatis学习 四

spring 集成mybatis

一：首先下载jar包（spring、mybatis、dbcp及mybatis-spring）,注意spring与mybatis之间是有版本要求的，不然会报错，具体版本间对照网上很多，就不贴出来了

数据库连接池使用的是dbcp,这个看自己，可以随时替换

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-dbcp2 -->
<dependency>
    <groupid>org.apache.commons</groupid>
    <artifactid>commons-dbcp2</artifactid>
    <version>2.1.1</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
    <groupid>org.mybatis</groupid>
    <artifactid>mybatis-spring</artifactid>
    <version>1.3.2</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
    <groupid>org.mybatis</groupid>
    <artifactid>mybatis</artifactid>
    <version>3.4.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
    <groupid>org.springframework</groupid>
    <artifactid>spring-context</artifactid>
    <version>4.3.14.release</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
    <groupid>org.springframework</groupid>
    <artifactid>spring-jdbc</artifactid>
    <version>4.3.14.release</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.batch/spring-batch-infrastructure -->
<dependency>
    <groupid>org.springframework.batch</groupid>
    <artifactid>spring-batch-infrastructure</artifactid>
    <version>3.0.9.release</version>
</dependency>

二：配置spring配置文件

<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">

    <!--开启spring扫描-->
    <context:component-scan base-package="com.founderit"/>
    <context:annotation-config/>

    <!--dbcp数据库连接池-->
     <bean id="datasource"
               class="org.apache.commons.dbcp2.basicdatasource"
               destroy-method="close">
             <property name="driverclassname" value="oracle.jdbc.driver.oracledriver"/>
             <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"/>
             <property name="username" value="scott"/>
             <property name="password" value="scott"/>
             <!--maxactive: 最大连接数量-->
             <property name="maxtotal" value="150"/>
             <!--minidle: 最小空闲连接-->
             <property name="minidle" value="5"/>
             <!--maxidle: 最大空闲连接-->
             <property name="maxidle" value="20"/>
             <!--initialsize: 初始化连接-->
             <property name="initialsize" value="30"/>
             <!--removeabandonedtimeout: 超时时间(以秒数为单位)-->
             <property name="removeabandonedtimeout" value="10"/>
         </bean>

    <!-- spring和mybatis完美整合 -->
    <bean id="sqlsessionfactory" class="org.mybatis.spring.sqlsessionfactorybean">
        <property name="datasource" ref="datasource"/>
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperlocations" value="com/founderit/mapper/*.xml"></property>
    </bean>

    <!-- dao接口所在包名，spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.mapperscannerconfigurer">
        <property name="basepackage" value="com.founderit.dao"/>
<!--        <property name="sqlsessionfactorybeanname" value="sqlsessionfactory"></property>-->
    </bean>
    <!-- (事务管理)transaction manager -->
    <bean id="transactionmanager"
          class="org.springframework.jdbc.datasource.datasourcetransactionmanager">
        <property name="datasource" ref="datasource"/>
    </bean>
</beans>

三：测试

 

 由于我们要在main方法中测试，所以讲userdao加了static关键字，运行提示错误，@autowired自动注入不支持静态域，再次修改测试

 

 我们从applicationcontext中得到testmain的实例，执行下面的bindssm方法，测试成功

另外需要注意的是必须从applicationcontext中得到testmain的实例，不能自己new maintest()得到实例，不然userdao会注入不成功