Defaulting to no-operation (NOP) logger implementation1

• com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI 에러잡기 빌드는 성공했는데 에러가 남 Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary. SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j... 개발중/Troubleshooting 2022. 7. 8.