MyBatis快速入门

//加载mybatis核心文件，获取SqlSessionFactory
     String resource = "mybatis-config.xml";
     InputStream inputStream = Resources.getResourceAsStream(resource);
     SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
     //获取SqlSession对象，用来执行sql
     SqlSession sqlSession = sqlSessionFactory.openSession();
     //执行sql
     List<Object> objects = sqlSession.selectList("dim.selectAll");
     System.out.println(objects);

mybatis-config.xml

<?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">

        <!--数据库连接信息-->
        <property name="driver" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql:///xuexi?useSSL=false"/>
        <property name="username" value="root"/>
        <property name="password" value="123321"/>

      </dataSource>
    </environment>
  </environments>
  <mappers>
    <!--sql映射文件-->
    <mapper resource="Dim.xml"/>
  </mappers>
</configuration>

logback.xml

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

<!-- 配置文件修改时重新加载，默认true -->
<configuration scan="true">
    
    <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径-->
    <property name="CATALINA_BASE" value="**/logs"></property>
    
    <!-- 控制台输出 -->
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder charset="UTF-8">
            <!-- 输出日志记录格式 -->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
 
    <!-- 第一个文件输出,每天产生一个文件 -->
    <appender name="FILE1" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 输出文件路径+文件名 -->
            <fileNamePattern>${CATALINA_BASE}/aa.%d{yyyyMMdd}.log</fileNamePattern>
            <!-- 保存30天的日志 -->
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder charset="UTF-8">
            <!-- 输出日志记录格式 -->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
 
    <!-- 第二个文件输出,每天产生一个文件 -->
    <appender name="FILE2" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${CATALINA_BASE}/bb.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${CATALINA_BASE}/bb.%d{yyyyMMdd}.log</fileNamePattern>
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder charset="UTF-8">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <appender name="CUSTOM" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${CATALINA_BASE}/custom.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- daily rollover -->
            <fileNamePattern>${CATALINA_BASE}/custom.%d{yyyy-MM-dd}.log</fileNamePattern>
            <!-- keep 30 days' worth of history -->
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder charset="UTF-8">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <!-- 设置日志输出级别 -->
    <root level="ERROR">
        <appender-ref ref="CONSOLE" />
    </root>
    <logger name="file1" level="DEBUG">
        <appender-ref ref="FILE1" />
    </logger>
    <logger name="file1" level="INFO">
        <appender-ref ref="FILE2" />
    </logger>
    <!-- 自定义logger -->
    <logger name="custom" level="INFO">
        <appender-ref ref="CUSTOM" />
    </logger>
</configuration>

pom:

  <!--mybatis-->
 <dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>3.5.5</version>
</dependency>

<!--mysql-->
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.46</version>
  </dependency>

  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.20</version>
  </dependency>
  <dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.2.3</version>
  </dependency>
  <dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-core</artifactId>
    <version>1.2.3</version>
  </dependency>