在@Configuration类中使用工厂创建映射bean

Question

Trying to create a map bean with prototype scope in config class

@Configuration
public class SpringConfig {

   public SpringConfig() {
   }


   @Bean
   @Scope("prototype")
   public Map<String, Composite> getCompositesMap() {
      return new LinkedHashMap<String, Composite>();
   }
}

But spring complains

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.eclipse.swt.widgets.Composite] found for dependency [map with value type org.eclipse.swt.widgets.Composite]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, mappedName=, description=, name=, type=class java.lang.Object, authenticationType=CONTAINER, lookup=)}

How does one define a prototype map bean using annotations only (no xml)?

Answer 1

The error is occurring because Spring is trying to inject Composite into your method, but there is no such bean that corresponds to that class.

You can add a prototype scoped bean inside your SpringConfig class - see here .