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log4j配置打印mybatis sql语句

2017-08-22 16:08 447 查看

log4j.rootLogger=DEBUG, stdout



log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n



#log4j.appender.R=org.apache.log4j.DailyRollingFileAppender

#log4j.appender.R.File=../logs/service.log

#log4j.appender.R.layout=org.apache.log4j.PatternLayout

#log4j.appender.R.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n



#log4j.logger.com.ibatis = debug

#log4j.logger.com.ibatis.common.jdbc.SimpleDataSource = debug

#log4j.logger.com.ibatis.common.jdbc.ScriptRunner = debug

#log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate = debug

#log4j.logger.java.sql.Connection = debug

log4j.logger.java.sql.Statement = debug

log4j.logger.java.sql.PreparedStatement = debug

log4j.logger.java.sql.ResultSet =debug


我们现在分几种情况处理：

1、此种情况只出现mybatis使用，无其他的包介入（如spring等，因为有些包会引入其他的日志系统，会造成干扰，稍后讲解）

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<dependency>

    <groupId>log4j</groupId>

    <artifactId>log4j</artifactId>

    <ve
20a90
rsion>1.2.17</version>

    </dependency>



    <dependency>

    <groupId>org.slf4j</groupId>

    <artifactId>slf4j-log4j12</artifactId>

    <version>1.7.21</version>

    </dependency>



       <dependency>

       <groupId>org.slf4j</groupId>

       <artifactId>slf4j-api</artifactId>

       <version>1.7.21</version>

       </dependency>



1、单独开放第三个无法打印sql语句

2、第一种和第三种无法打印sql语句

3、其他情况都可以打印出sql语句

4、最后得出的结论可能是版本冲突的问题

总而言之

1、没有slf4j，只要log4j即可

2、有slf4j，则必须要有slf4j-log4j12，其他的可有可无

此时可以配置log4j.properties和log4j.xml均可以实现

如：log4j.properties

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log4j.rootLogger=DEBUG, stdout



log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n



#log4j.appender.R=org.apache.log4j.DailyRollingFileAppender

#log4j.appender.R.File=../logs/service.log

#log4j.appender.R.layout=org.apache.log4j.PatternLayout

#log4j.appender.R.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n



#log4j.logger.com.ibatis = debug

#log4j.logger.com.ibatis.common.jdbc.SimpleDataSource = debug

#log4j.logger.com.ibatis.common.jdbc.ScriptRunner = debug

#log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate = debug

#log4j.logger.java.sql.Connection = debug

log4j.logger.java.sql.Statement = debug

log4j.logger.java.sql.PreparedStatement = debug

log4j.logger.java.sql.ResultSet =debug

2、mybatis和其他架构包混用，

最头痛的就是这种，试了很多种办法，最后才校验出一种合适的办法。就是一定要用log4j.xml配置

配置如下：

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

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"

    debug="false">



    <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern" value="[%d{dd/MM/yy hh:mm:ss:sss z}] %5p %c{2}: %m%n" />

        </layout>

    </appender>





































    

    <logger name="com.ibatis" additivity="true">

        <level value="DEBUG" />

    </logger>



    <logger name="java.sql.Connection" additivity="true">

        <level value="DEBUG" />

    </logger>



    <logger name="java.sql.Statement" additivity="true">

        <level value="DEBUG" />

    </logger>



    <logger name="java.sql.PreparedStatement" additivity="true">

        <level value="DEBUG" />

    </logger>



    <logger name="java.sql.ResultSet" additivity="true">

        <level value="DEBUG" />

    </logger>



    <root>

        <level value="DEBUG" />

        <appender-ref ref="CONSOLE" />





    </root>

</log4j:configuration>

好的能够打印出sql语句啦，成功啦！

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[24/07/16 03:49:25:025 CST] DEBUG spring.SqlSessionUtils: Creating a new SqlSession

[24/07/16 03:49:25:025 CST] DEBUG spring.SqlSessionUtils: SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@5a90d465] was not registered for synchronization because synchronization is not active

[24/07/16 03:49:25:025 CST] DEBUG datasource.DataSourceUtils: Fetching JDBC Connection from DataSource

[24/07/16 03:49:25:025 CST] DEBUG datasource.DriverManagerDataSource: Creating new JDBC DriverManager Connection to [jdbc:mysql://localhost:3307/security_db?useUnicode=true&characterEncoding=utf-8]

[24/07/16 03:49:25:025 CST] DEBUG transaction.SpringManagedTransaction: JDBC Connection [com.mysql.jdbc.JDBC4Connection@51e19e59] will not be managed by Spring

[24/07/16 03:49:25:025 CST] DEBUG UserMapper.getUserNum: ==>  Preparing: select COUNT(DISTINCT(user.id)) as total_num from user, user_roles where user.id = user_roles.User_id

[24/07/16 03:49:25:025 CST] DEBUG UserMapper.getUserNum: ==> Parameters:

[24/07/16 03:49:25:025 CST] DEBUG UserMapper.getUserNum: <==      Total: 1

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