In the past two days, I started to learn mybatis, I feel a little bit, share it, I would like to thank the No.1 Gate blog here. Link: http://www.yihaomen.com/article/java/426.htm
First of all, let’s take a look at the project example diagram:
applicationContext.xml class:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"
default-autowire="byName" default-lazy-init="false">
<!-- 自动扫描web包 ,将带有注解的类 纳入spring容器管理 -->
<context:component-scan base-package="com.yihaomen"></context:component-scan>
<!-- 引入jdbc配置文件 -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config/jdbc.properties</value>
</list>
</property>
</bean>
<!-- 配置数据源 one-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driver}">
</property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<!-- initialSize: 初始化连接 -->
<property name="initialSize" value="5" />
<!-- maxIdle: 最大空闲连接 -->
<property name="maxIdle" value="10" />
<property name="minIdle" value="5" />
<property name="maxActive" value="15" />
<property name="removeAbandoned" value="true" />
<property name="removeAbandonedTimeout" value="180" />
<!-- maxWait: 超时等待时间以毫秒为单位 6000毫秒/1000等于60秒 -->
<property name="maxWait" value="3000" />
<property name="validationQuery">
<value>SELECT 1</value>
</property>
<property name="testOnBorrow">
<value>true</value>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="sqlSessionFactoryBeanName" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--dataSource属性指定要用到的连接池-->
<property name="dataSource" ref="dataSource"/>
<!--configLocation属性指定mybatis的核心配置文件-->
<property name="configLocation" value="classpath:config/Configuration.xml" />
<!-- 所有配置的mapper文件 -->
<property name="mapperLocations" value="classpath*:com/yihaomen/mapper/*.xml" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.yihaomen.inter" />
</bean>
</beans>
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf8
jdbc.username=root
jdbc.password=123456
Configuration.xml (mainly to reduce the length of the reduced set to the class name, will be introduced later )
<configuration>
<typeAliases>
<typeAlias alias="User" type="com.yihaomen.model.User"/>
</typeAliases>
</configuration>
log4j.properties (log configuration)
log4j.rootCategory=info, stdout , R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[QC] %p [%t] %C.%M(%L) | %m%n
log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=D:/my_log.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d-[TS] %p %t %c - %m%n
log4j.logger.com.ibatis=debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug
log4j.logger.java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug,stdout