Question

我是春天的新手，我使用ServiceLocatorFactoryBean实现了工厂模式，如下所示..

public interface Printer{
 public void print();
}

public class Printer1 implements Printer{
 @Override
 public void print(){
  System.out.println("printer1");
 }
}

public class Printer2 implements Printer{
 @Override
 public void print(){
  System.out.println("printer2");
 }
}

和工厂界面

public interface PrinterFactory{
 public printer getPrinter(String printerName);
}

我正在使用基于注释的

@Configuration
@ComponentScan(basePackage)
public class PrinterConfiguration {

 @Bean
 public ServiceLocatorFactoryBean createFactoryBean() {
  ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();
  factory.setServiceLocatorInterface(PrinterFactory.class);
  return factory;
 }

 @Bean(name = "printer1")
 @Scope(value=ConfigurableBeanFactory.SCOPE_PROTOTYPE)
 public Printer1 printer1Service(){
  return new Printer1();
 }

 @Bean(name = "printer2")
 @Scope(value=ConfigurableBeanFactory.SCOPE_PROTOTYPE)
 public Printer2 printer1Service(){
  return new Printer2();
 }
}

并且如下所示：

    @Autowired
    PrinterFactory printerFactory;

    printerFactory.getPrinter("printer1");

低于例外：

Could not autowire field: org.test.myproject.PrinterFactory  org.test.myproject.controller.MyController.printerFactory ; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.test.myproject.PrinterFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)

谁能告诉我哪里出错？

无法使用ServiceLocatorFactoryBean自动连接字段

0 个答案: