此处不允许元素：用于IntelliJ中SpringBean定义中的限定符

这是文件，我正在尝试以下示例：

这是加载xml文件的测试栏

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestFooBar {

public static void main(String[] args) throws InterruptedException {
    ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(
            "test2.xml");
    Bar bar = applicationContext.getBean("bar", Bar.class);
    bar.printFooName();
    System.out.println(bar.toString());
    /*
     * if a single definition of a class type exists, then u can get the
     * instance by this way also. No need to specify Id
     */
    Foo foo = applicationContext.getBean(Foo.class);
    System.out.println(foo.getName());
}

}

运行应用程序时，堆栈跟踪如下所示：

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'bar': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private annotation.Foo annotation.Bar.foo; nested exception is     org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [annotation.Foo] 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.Qualifier(value=anotherFoo)}
at   org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1074)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at annotation.TestFooBar.main(TestFooBar.java:20)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private annotation.Foo annotation.Bar.foo; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [annotation.Foo] 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.Qualifier(value=anotherFoo)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:502)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:282)
... 18 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [annotation.Foo] 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.Qualifier(value=anotherFoo)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:920)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:789)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:474)
... 20 more

线程“main”org.springframework.beans.factory.BeanCreationException中的异常：创建名为“bar”的bean时出错：自动连线依赖项的注入失败；嵌套异常为org.springframework.beans.factory.BeanCreationException:无法自动关联字段：private annotation.Foo annotation.Bar.Foo；嵌套异常为org.springframework.beans.factory.NoSuchBeanDefinitionException:未找到依赖项类型为[annotation.Foo]的匹配bean：至少需要1个符合此依赖项autowire候选项条件的bean。依赖项注释：{@org.springframework.beans.factory.annotation.Autowired（required=true），@org.springframework.beans.factory.annotation.Qualifier（value=anotherFoo）} 位于org.springframework.beans.factory.annotation.AutoWiredNotationBeanPostProcessor.postProcessPropertyValues（AutoWiredNotationBeanPostProcessor.java:285） 位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1074） 位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:517） 位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:456） 位于org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject（AbstractBeanFactory.java:291） 位于org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222） 位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:288） 位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:190） 位于org.springframework.beans.factory.support.DefaultListableBeanFactory.PreInstanceSingleton（DefaultListableBeanFactory.java:580） 位于org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:895） 位于org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:425） 位于org.springframework.context.support.ClassPathXmlApplicationContext。（ClassPathXmlApplicationContext.java:139） 位于org.springframework.context.support.ClassPathXmlApplicationContext。（ClassPathXmlApplicationContext.java:83） main（TestFooBar.java:20） 在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处 在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）中 在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）中 位于java.lang.reflect.Method.invoke（Method.java:606） 位于com.intellij.rt.execution.application.AppMain.main（AppMain.java:120） 原因：org.springframework.beans.factory.BeanCreationException:无法自动关联字段：private annotation.Foo annotation.Bar.Foo；嵌套异常为org.springframework.beans.factory.NoSuchBeanDefinitionException:未找到依赖项类型为[annotation.Foo]的匹配bean：至少需要1个符合此依赖项autowire候选项条件的bean。依赖项注释：{@org.springframework.beans.factory.annotation.Autowired（required=true），@org.springframework.beans.factory.annotation.Qualifier（value=anotherFoo）} 位于org.springframework.beans.factory.annotation.AutoWiredNotationBeanPostProcessor$AutoWiredFeldElement.inject（AutoWiredNotationBeanPostProcessor.java:502） 位于org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:84） 位于org.springframework.beans.factory.annotation.AutoWiredNotationBeanPostProcessor.postProcessPropertyValues（AutoWiredNotationBeanPostProcessor.java:282） ... 还有18个 原因：org.springframework.beans.factory.NoSuchBeanDefinitionException:找不到依赖项类型为[annotation.Foo]的匹配bean：至少需要1个符合此依赖项autowire候选项条件的bean。依赖项注释：{@org.springframework.beans.factory.annotation.Autowired（required=true），@org.springframework.beans.factory.annotation.Qualifier（value=anotherFoo）} 位于org.springframework.beans.factory.support.DefaultListableBeanFactory.RaiseNouchBeanDefinitionException（DefaultListableBeanFactory.java:920） 位于org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:789） 位于org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency（DefaultListableBeanFactory.java:703） 位于org.springframework.beans.factory.annotation.AutoWiredNotationBeanPostProcessor$AutoWiredFeldElement.inject（AutoWiredNotationBeanPostProcessor.java:474） ... 20多

---

谢谢您提供的额外详细信息，您想做什么还不清楚

@Qualifier

注释的使用方式与

@Resource

不同。指定元数据

元素时，将覆盖解析

@限定符时使用的标识符。在这种情况下，
标识符
“secondaryFoo”
将替换
标识符
“anotherFoo”
。如果您将您的声明更改为

@Autowired
@Qualifier(value = "secondaryFoo")
private Foo foo;

它会自动连接正确。但是，您仍然可以使用

Foo anotherFoo = (Foo) applicationContext.getBean("anotherFoo");

要获取具有
id的
“anotherFoo”
的
。虽然这会失败

Foo anotherFoo = (Foo) applicationContext.getBean("secondaryFoo");

如果您正在寻找如何基于唯一id自动连线，则应使用
@Resource
。各国：

如果您打算用名称表示注释驱动的注入，请不要
主要使用@Autowired，即使在技术上能够引用
通过@Qualifier值创建一个bean名称。相反，使用JSR-250
@决议
Foo anotherFoo = (Foo) applicationContext.getBean("anotherFoo");

Foo anotherFoo = (Foo) applicationContext.getBean("secondaryFoo");