I have start my learning 3 months ago, and the process was painful and inefficient.
I am trying to learn spring in 3 ways, the first one is the best, reading books, second way is to read blog with sample code, the last one, most inefficient, reading spring docs.
the problem of reading book is, you have to find a book that exactly talk about what you want to know, like if you want to use mybatis with spring, you have to find that book and purchase it. right now, I could find a book that talks about spring + oauth + security.
the problem of reading blog is, many of those posts are out dated, or their sample environment are different from mine. like they are using embedded spring boot while I am not. and those different environment cause configuration error which is hard for me to fix.
the last one is bothering me so much, I could understand how to learn spring in this way, I read the whole websocket chapter, and it provide only a few snippet which is not enough to make things work. and that doc is talking about definition and design concept, did tell you a thing about how to make the whole thing works.
I was wondering, how do people learn spring and become so good about it. what could I do to learn spring + oauth + security efficiently?
P.S. these 3 months, I have learn xml base mvc setting, java base configuration, rest service, connect to database (postgresql), jsp, jstl, all are basics, couldn't customize those setting any further.