Mybatis相关依赖及配置文件

mybatis相关依赖包

<dependencies>
        <!--mybatis的依赖包-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.9</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.31</version>
        </dependency>
        <!--junit单元测试的依赖-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
            <!--范围:只在test下有效-->
            <scope>test</scope>
        </dependency>
    </dependencies>

mybatis核心配置文件

<?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>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC" />
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.cj.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://localhost:3306/mybatis" />
                <property name="username" value="root" />
                <property name="password" value="root" />
            </dataSource>
        </environment>
    </environments>
  
</configuration>

mybatis其他辅助功能

<?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>
    <!--引入数据库配置文件-->
    <properties resource="jdbc.properties">

    </properties>
    <!--自动驼峰命名映射-->
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    <!--起别名-->
    <typeAliases>
        <!--<typeAlias type="pojo.User" alias="User"/>-->
        <package name="pojo"/>
    </typeAliases>
    <!-- 分页助手的插件 -->
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageHelper">
            <!--dialect: 指定方言 limit-->
            <property name="dialect" value="mysql"/>
        </plugin>
    </plugins>

    <!--环境配置-->
    <environments default="development">
        <!--使用MySQL环境-->
        <environment id="development">
            <!--使用JDBC类型事务管理器-->
            <transactionManager type="JDBC"></transactionManager>
            <!--使用连接池-->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"></property>
                <property name="url" value="jdbc:mysql:///mybatis2?useUnicode=true&amp;characterEncoding=utf-8"></property>
                <property name="username" value="root"></property>
                <property name="password" value="123456"></property>
            </dataSource>
        </environment>
    </environments>

    <!--加载映射配置-->
    <mappers>
        <package name="mapper"/>
    </mappers>
</configuration>

mybatis日志工厂，如果想要打印日志，则需要将日志工厂配置到mybatis配置文件中，注意标签顺序

<settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
 </settings>

分页助手pom文件，如果想要使用分页助手插件，则需要配置一下pom文件

<!-- 分页助手 -->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>3.7.5</version>
</dependency>
<dependency>
    <groupId>com.github.jsqlparser</groupId>
    <artifactId>jsqlparser</artifactId>
    <version>0.9.1</version>
</dependency>