一、mybatis.xml
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE configuration 3 PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 4 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 5 <configuration> 6 <!-- properties加载外部文件 --> 7 <properties resource="db.properties"/> 8 9 <!-- 设置MyBatis使用log4j日志支持 --> 10 <settings> 11 <setting name="logImpl" value="LOG4J"/> 12 </settings> 13 14 <!-- typeAliases给类型起别名 --> 15 <typeAliases> 16 <package name="com.pojo"/> 17 </typeAliases> 18 19 <!--用于指定使用哪个环境，default:用于指定使用的环境id--> 20 <environments default="dev"> 21 <!--用于配置开发环境，id:环境的唯一识别码--> 22 <environment id="dev"> 23 <!--事务管理器，type: 用于设置mybatis采用什么方式管理事务，JDBC表示采用和JDBC一样的事务管理方式--> 24 <transactionManager type="JDBC"></transactionManager> 25 <!--数据源/连接池, 用于配置连接池和数据库连接的参数，type: 用于设置mybatis是否采用连接池技术，POOLED表示MyBatis采用连接池技术--> 26 <dataSource type="POOLED"> 27 <property name="driver" value="${driver}"/> 28 <property name="url" value="${url}"/> 29 <property name="username" value="${username}"/> 30 <property name="password" value="${password}"/> 31 </dataSource> 32 </environment> 33 </environments> 34 35 <mappers> 36 <!--<mapper class="com.mapper.UserMapper"/>--> 37 <package name="com.mapper"/> 38 </mappers> 39 40 </configuration>
二、mapper.xml
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE mapper 3 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 4 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 5 <!--namespace: 命名空间, 可以随意定义, 一般情况下要写全限定路径 6 MyBatis管理SQL语句是通过namespace+id来定位的--> 7 <mapper namespace="com.mapper.ClazzMapper"> 8 <!--开启二级缓存--> 9 <cache/> 10 </mapper>
三、log4j.properties
1 # Set root category priority to INFO and its only appender to CONSOLE. 2 log4j.rootCategory= ERROR, CONSOLE 3 #log4j.rootCategory=DEBUG, CONSOLE, LOGFILE 4 5 # 单独设置SQL语句的输出级别为DEBUG级别 6 # 方法级别 7 # log4j.logger.com.mapper.UserMapper.selAll=DEBUG 8 # 类级别 9 # log4j.logger.com.mapper.UserMapper=DEBUG 10 # 包级别 11 # log4j.logger.com.mapper=DEBUG 12 log4j.logger.com.mapper=DEBUG 13 14 # CONSOLE is set to be a ConsoleAppender using a PatternLayout. 15 log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender 16 17 log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout 18 log4j.appender.CONSOLE.layout.ConversionPattern=- %m %n 19 20 # LOGFILE is set to be a File appender using a PatternLayout. 21 log4j.appender.LOGFILE=org.apache.log4j.FileAppender 22 log4j.appender.LOGFILE.File=e:/log4jTest.log 23 log4j.appender.LOGFILE.Append=true 24 log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout 25 log4j.appender.LOGFILE.layout.ConversionPattern=- %m %l %d{yyyy-MM-dd hh:mm:ss} %n
四、db.properties
1 driver=com.mysql.jdbc.Driver 2 url=jdbc:mysql://localhost:3306/db_books?useUnicode=true&characterEncoding=utf-8 3 username=root 4 password=123456