Log4j.properties log level debug print background SQL statement

In general, the print level of the log is important for development accessibility, and the appropriate log level can quickly locate development issues.

Many times, we need to examine the background SQL statements at development time, which can be done by configuring the log4j configuration file.

When you interact with the database when the info level is not printed, the SQL statement is configured as follows:

To see the output of SQL more clearly, we now change the log level to debug, as follows:

In this way, when interacting with the database, the console will print out the SQL, easy to locate the problem, but also can obviously see the log output difference between info and debug, debug output log more, and when the project started slower.

Log4j.properties log level debug print background SQL statement