Work experience (1)

I haven’t made a crud for a week. I’m afraid that I’ll learn more if I don’t know how to do it. Don’t be afraid to ask people too much. Otherwise, it’s you. Don’t be trapped for too long. One day I wanted to come over to find out how stupid I was. If I can’t scan the xml, I just look at the configuration file to see if there is any xml in the tag folder. Look at the method in the mapper.xml file. If there is a query, do the query first, otherwise no errors will Knowing that mistake, let the boy be less careless!