You’ll also get started with JPA Query Language (JPQL) and use it to execute a few simple database operations on the example application. The complete source code for the example application can be ...

先感谢一下进贴的大佬，客气话不多说，直接说我的问题: 我使用的是jdk1.8+spring boot+spring data开发的一个小项目。 @Query ...

I have this enumerated value that I need to store. Its essentially a lookup code. However, each of the enumarated values has tacit (if that is the right word) properties based on its values.

Like it or not, data is an integral part of any application, even cool object-oriented ones. Everything stops at the persistence layer, where Java developers traditionally have had to write complex ...