mybatis-mybatis-config.xml详细介绍

1.mybatis-config.xml

1.1：配置，配置可以是引入外部文件，也可以是在本文件内写配置

<!-- <properties resource="jdbc.properties"/> -->
<properties>
<property name="jdbc.driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="jdbc.url" value="jdbc:mysql://localhost:3306/db_mybatis"/>
<property name="jdbc.username" value="root"/>
<property name="jdbc.password" value="123456"/>
</properties>

1.2别名，别名可以是单独每个实体类写，也可以是扫描包　　

<!-- <typeAliases>
<typeAlias alias="Student" type="com.java1234.model.Student"/>
</typeAliases> -->
<typeAliases>
<package name="com.java1234.model"/>
</typeAliases>

1.3配置环境

1.3.1：配置连接类型是托管或者是jdbc

<transactionManager type="JDBC" />

1.3.2配置数据源

<dataSource type="POOLED">
<property name="driver" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>

1.4.配置扫码mapper文件

<mappers>
<!-- <mapper resource="com/java1234/mappers/StudentMapper.xml" /> -->
<!-- <mapper class="com.java1234.mappers.StudentMapper"/> -->
<package name="com.java1234.mappers"/>
</mappers>

2.5.整个mybatis-congfig.xml配置文件

<?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>
<!-- <properties resource="jdbc.properties"/> -->
<properties>
<property name="jdbc.driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="jdbc.url" value="jdbc:mysql://localhost:3306/db_mybatis"/>
<property name="jdbc.username" value="root"/>
<property name="jdbc.password" value="123456"/>
</properties>
<!-- <typeAliases>
<typeAlias alias="Student" type="com.java1234.model.Student"/>
</typeAliases> -->
<typeAliases>
<package name="com.java1234.model"/>
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
<environment id="test">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
</environments>
<mappers>
<!-- <mapper resource="com/java1234/mappers/StudentMapper.xml" /> -->
<!-- <mapper class="com.java1234.mappers.StudentMapper"/> -->
<package name="com.java1234.mappers"/>
</mappers>
</configuration>

2.配置log4j

2.1配置appender：

log4j.rootLogger=info,appender1,appender2

2.2配置控制台输出

log4j.appender.appender1=org.apache.log4j.ConsoleAppender

2.3配置文件输出

log4j.appender.appender2=org.apache.log4j.FileAppender
log4j.appender.appender2.File=C:/logFile.txt

log4j.properties整个配置文件

log4j.rootLogger=info,appender1,appender2

log4j.appender.appender1=org.apache.log4j.ConsoleAppender

log4j.appender.appender2=org.apache.log4j.FileAppender
log4j.appender.appender2.File=C:/logFile.txt

log4j.appender.appender1.layout=org.apache.log4j.TTCCLayout
log4j.appender.appender2.layout=org.apache.log4j.TTCCLayout