[英]Get bean by name in Micronaut
I have an interface that looks like.我有一个看起来像的界面。
interface Task {
void run(String param);
}
And I have many implementations annotated with @Named("same_name")我有很多用 @Named("same_name") 注释的实现
I want to get an implementation similar to Spring:我想得到类似于 Spring 的实现:
@Inject
ApplicationContext appContext
void execTask(String name, String param) {
Task task = appContext.getBeam(Task.class, name);
task.run(param);
}
I managed to do this using a search for annotation in bean definitions, similar to:我设法通过在 bean 定义中搜索注释来做到这一点,类似于:
(code in Groovy) (Groovy 中的代码)
void execTask(String name, String param) {
Collection<BeanDefinition<Task>> definitions = appContext.getBeanDefinitions(Task)
BeanDefinition<Task> definition = definitions.find { BeanDefinition<Task> it ->
it.getAnnotation(Named)?.stringValue()?.filter {it == name }?.present
}
Task task = appContext.getBean(Task, definition.declaredQualifier)
task.run(param)
}
but it seems like a lot for something simple.但对于一些简单的事情来说似乎很多。
is there a more direct way?有没有更直接的方法?
You can retrieve a bean with a name qualifier:您可以检索带有名称限定符的 bean:
import io.micronaut.inject.qualifiers.Qualifiers
// ...
void execTask(String name, String param) {
Task task = appContext.getBean(Task.class,
Qualifiers.byName(name));
task.run(param);
}
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