我已经尝试了所有可以在任何地方找到的选项,我查看了之前就该主题提出的所有问题并尝试了解决方案,但没有任何效果,我得到的就是这个错误.
错误
INFO: Loading XML bean definitions from class path resource [spring.xml]
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'circle': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void spring.springdemo.Circle.setCenter(spring.springdemo.Point); nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [spring.springdemo.Point] is defined: expected single matching bean but found 3: pointA,pointB,pointC
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.context.support.ClassPathXmlApplicationContext.
我在这个例子中创建的文件如下.
spring.xml
这是架构定义
这是我想申请自动装配的地方.
我添加了这些类.
Circle.java
该类,该对象将由autowire填充
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
public class Circle implements Shape{
private Point center;
@Override
public void draw() {
System.out.println("Drawing Circle");
System.out.println("Point is : ("+center.getX()+","+center.getY()+")");
}
public Point getCenter() {
return center;
}
@Autowired
@Qualifier("CircleRelated")
public void setCenter(Point center) {
this.center = center;
}
}
我建议你删除< qualifier value =“CircleRelated”/>从xml中直接从id注入依赖项.在大多数情况下,xml中的id就足够了,限定符只能用于特定情况.惯例是使用小写字母作为id或限定符的第一个字母.
因此,将@Qualifier(“CircleRelated”)的CircleRelated更改为现有ID,如@Qualifier(“pointA”),@ Qualifier(“pointB”)或@Qualifier(“pointC”)