Mybatis中日志工厂LOG4J的使用步骤
1.导入jar包
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
2.新建一个配置文件log4j.properties
#将等级为DEBUG的日志信息输出到console和file这两个目的地,console和file的定义在下面的代码
log4j.rootLogger=DEBUG,console,file
#控制台输出的相关设置
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
#文件输出的相关设置
log4j.appender.file = org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./log/joe.log
log4j.appender.file.MaxFileSize=10mb
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yy-MM-dd}][%c]%m%n
#日志输出级别
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
3.在主配置文件中,通过settings标签设置日志文件类型
<settings>
<setting name="logImpl" value="LOG4J"/>
</settings>
4.在使用log4j的类中新建一个静态对象,
4.1:注意要导对包org.apche.log4j.Logger;
4.2:日志对象,参数为当前类的class (UserMapperTest.class)
package com.joe.dao;
import com.joe.pojo.User;
import com.joe.utils.MyBatisUtil;
import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import org.junit.Test;
public class UserMapperTest {
static Logger logger = Logger.getLogger(UserMapperTest.class);
@Test
public void getUserByIDTest(){
SqlSession sqlSession = MyBatisUtil.getSqlSession();
UserMapper mapper = sqlSession.getMapper(UserMapper.class);
User userByID = mapper.getUserByID(1);
System.out.println(userByID);
sqlSession.close();
}
@Test
public void testLog4j(){
logger.info("info:进入了testlog4j");
logger.debug("debug:进入了testLog4j");
logger.error("error:进入了testLog4j");
}
}
5.在代码中加一句日志信息,可以选择info类型,也可以选择debug或error类型{logger.info(),logger.debug(),logger.error()}
package com.joe.dao;
import com.joe.pojo.User;
import com.joe.utils.MyBatisUtil;
import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import org.junit.Test;
public class UserMapperTest {
static Logger logger = Logger.getLogger(UserMapperTest.class);
@Test
public void getUserByIDTest(){
SqlSession sqlSession = MyBatisUtil.getSqlSession();
logger.info("测试,进入getUserByIDtest方法成功!");
UserMapper mapper = sqlSession.getMapper(UserMapper.class);
User userByID = mapper.getUserByID(1);
System.out.println(userByID);
sqlSession.close();
}
@Test
public void testLog4j(){
logger.info("info:进入了testlog4j");
logger.debug("debug:进入了testLog4j");
logger.error("error:进入了testLog4j");
}
}
6.执行成功后,控制台会打印log4j日志信息,并且之前我们在配置文件中设置了让打印的log日志保存到项目的当前路径下
可以看到,我这里多了一个lt.log文件,里面清晰的写出了每一句日志的级别,刚才我们自定义的info日志也在其中~~~
[DEBUG][20-05-04][org.apache.ibatis.logging.LogFactory]Logging initialized using 'class org.apache.ibatis.logging.log4j.Log4jImpl' adapter.
[DEBUG][20-05-04][org.apache.ibatis.logging.LogFactory]Logging initialized using 'class org.apache.ibatis.logging.log4j.Log4jImpl' adapter.
[DEBUG][20-05-04][org.apache.ibatis.datasource.pooled.PooledDataSource]PooledDataSource forcefully closed/removed all connections.
[DEBUG][20-05-04][org.apache.ibatis.datasource.pooled.PooledDataSource]PooledDataSource forcefully closed/removed all connections.
[DEBUG][20-05-04][org.apache.ibatis.datasource.pooled.PooledDataSource]PooledDataSource forcefully closed/removed all connections.
[DEBUG][20-05-04][org.apache.ibatis.datasource.pooled.PooledDataSource]PooledDataSource forcefully closed/removed all connections.
[INFO][20-05-04][com.joe.dao.UserMapperTest]测试,进入getUserByIDtest方法成功!
[DEBUG][20-05-04][org.apache.ibatis.transaction.jdbc.JdbcTransaction]Opening JDBC Connection
[DEBUG][20-05-04][org.apache.ibatis.datasource.pooled.PooledDataSource]Created connection 660879561.
[DEBUG][20-05-04][org.apache.ibatis.transaction.jdbc.JdbcTransaction]Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@276438c9]
[DEBUG][20-05-04][com.joe.dao.UserMapper.getUserByID]==> Preparing: select * from user where id = ?
[DEBUG][20-05-04][com.joe.dao.UserMapper.getUserByID]==> Parameters: 1(Integer)
[DEBUG][20-05-04][com.joe.dao.UserMapper.getUserByID]<== Total: 1
[DEBUG][20-05-04][org.apache.ibatis.transaction.jdbc.JdbcTransaction]Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@276438c9]
[DEBUG][20-05-04][org.apache.ibatis.transaction.jdbc.JdbcTransaction]Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@276438c9]
[DEBUG][20-05-04][org.apache.ibatis.datasource.pooled.PooledDataSource]Returned connection 660879561 to pool.
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版权声明:本文为CSDN博主「刘桐ssss」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/delicious_life/article/details/105660519