库 取决于 Spring 版本的集成应用程序

Question

So I am writing a library for some features and the inner library needs to use Spring . I don't want to put in the version of Spring in the inner library. I want that the application using the library defines the version of Spring to use.

Is this even possible? If yes, then how?

Answer 1

Maven wise, clearly your library needs to be dependent on spring because it has to be compiled somehow so at least spring annotations like @Autowire or @Configuration / @Bean need to be in the compilation classpath.

However in the pom.xml of the library you can declare the dependency on spring as "optional" ( <optional>true</optional> )

So when maven will compile the application that has your library as a dependency won't need to "take" transitively the spring as well

You can read about optional dependencies here . Their example with ProjectA, ProjectB and ProjectX is relevant...