Today, I want to take a look at the sql statement generated by myBatis to see if there are any syntax errors, but it has not been printed out. Many people have proposed a method for mybatis to output sql statements under springMVC, but I tried it and found that it doesn't work. It is also possible It's a configuration problem for me. Below is my problem, solution, and configuration file.
The problem: the version problem of slf4j and log4j.
Solution: Just replace the mutually supported version in pom.xml, just put a log4j.propertis under src to print out the sql statement.
Configuration file code:
pom.xml:
<!-- log related -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
log4j.properties:
log4j.rootLogger=debug, console log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.Target=System.out log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.ConversionPattern=%d %5p %c - %m%n log4j.logger.java.sql.Connection=debug log4j.logger.java.sql.Statement=debug log4j.logger.java.sql.PreparedStatement=debug log4j.logger.org.mybatis=debug log4j.logger.org.myrobot.persist=debug log4j.logger.org.myrobot.dao=debug log4j.logger.org.myrobot.controller=debug
org.myrobot.* is my own package, I can test it without adding it. Because log4j.rootLogger has set the global log output method.