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我已成功实现了自定义注射注释,目标PARAMETER
。我不明白我如何使我的注释支持目标METHOD
以及?针对泽西岛2中METHOD和PARAMETER的自定义注释
这里是我的示例代码:
你好注释:
@Retention(RUNTIME)
@Target({METHOD, PARAMETER})
public @interface Hello {
}
你好注释解析:
@Singleton
public class HelloResolver {
public static class HelloInjectionResolver extends ParamInjectionResolver<Hello> {
public HelloInjectionResolver() {
super(HelloValueFactoryProvider.class);
}
}
@Singleton
public static class HelloValueFactoryProvider extends AbstractValueFactoryProvider {
@Inject
public HelloValueFactoryProvider(final MultivaluedParameterExtractorProvider extractorProvider,
final ServiceLocator injector) {
super(extractorProvider, injector, UNKNOWN);
}
@Override
protected Factory<?> createValueFactory(final Parameter parameter) {
if (!String.class.equals(parameter.getRawType())) return null;
if (parameter.getAnnotation(Hello.class) == null) return null;
return new AbstractContainerRequestValueFactory<String>() {
@Override
public String provide() {
final DateTime now = DateTime.now();
if (22 < now.getHourOfDay() || now.getHourOfDay() < 6) {
throw new WebApplicationException(FORBIDDEN);
} else {
return format("Hello, it is %s o'clock so I am awake! :)", forPattern("HH:mm").print(now));
}
}
};
}
}
public static class Binder extends AbstractBinder {
@Override
protected void configure() {
bind(HelloValueFactoryProvider.class).to(ValueFactoryProvider.class).in(Singleton.class);
bind(HelloInjectionResolver.class).to(
new TypeLiteral<InjectionResolver<Hello>>() {
}
).in(Singleton.class);
}
}
}
你好资源:
@Path("hello")
public class HelloResource {
@GET
@Path("method")
@Produces(APPLICATION_JSON)
@Hello
public String method() {
return "Hello!";
}
@GET
@Path("param")
@Produces(APPLICATION_JSON)
public String param(@Hello final String hello) {
return hello;
}
}
当我打
http://localhost:8080/hello/method
我收到你好!不管小时是否在禁区内。
谢谢,但我的问题不是参数目标,它是如何添加方法作为目标。 – Stine