Class Dependency Injection that I don’t have access to

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Hello, how are you?

How can I inject dependency into a class I don’t have access to, that is, I can’t say on top of the class that it’s a java bean (@Component).

Thank you very much!

java spring-boot dependency-injection

  • Thank you for the answer, Piovezan. My question was not well worded. Excuse me. The impasse I’m in is that I have a Java file that I don’t have access to. And I would like to brand it as @Component, so that I can do dependency injection. Is there any way to do that? Thank you very much!

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You can do this through Applicationcontext using the getAutowireCapableBeanFactory() together with autowireBeanProperties():

@Autowired
ApplicationContext ctx;

private void foo(){
    ClasseQueNaoTemAcesso umaClasseQueNaoTenhoAcesso = new ClasseQueNaoTemAcesso();
    ctx.getAutowireCapableBeanFactory()
    .autowireBeanProperties(umaClasseQueNaoTenhoAcesso,
    AutowireCapableBeanFactory.AUTOWIRE_AUTODETECT, true);
}

  • Thank you very much, Brenno!

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