Ошибка при использовании innerBean

Question

Я делаю простую программу для проверки внутреннего компонента, но получаю исключение. Вот код, который я пишу.

TextEditor Класс:

public class TextEditor { 

private SpellChecker spellChecker; 

public SpellChecker getSpellChecker() { 
    return spellChecker; 
} 

public void setSpellChecker(SpellChecker spellChecker) { 
    this.spellChecker = spellChecker; 
} 

public void spellCheck(){ 
    spellChecker.spellChecking(); 
} 
} 

SpellChecker Класс:

public class SpellChecker { 

public SpellChecker() { 
    System.out.println("Spell Checker Constructor"); 
} 

public void spellChecking(){ 
    System.out.println("Spell Checking"); 
} 
} 

Контроллер Класс:

public class Controller { 

public static void main(String[] args) { 
    ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml"); 
    TextEditor editor = (TextEditor)context.getBean("editor"); 
    editor.spellCheck(); 
} 
} 

spring.xml:

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 

<bean id="editor" class="com.data.TextEditor"> 
    <property name="spellChecker"> 
     <bean id="spellChecker" name="com.data.SpellChecker"/> 
    </property> 
</bean>  

Трассировка стека:

WARNING: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'editor' defined in class path resource [spring.xml]: Cannot create inner bean 'spellChecker' while setting bean property 'spellChecker'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spellChecker' defined in class path resource [spring.xml]: Instantiation of bean failed; nested exception is java.lang.IllegalStateException: No bean class specified on bean definition 
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'editor' defined in class path resource [spring.xml]: Cannot create inner bean 'spellChecker' while setting bean property 'spellChecker'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spellChecker' defined in class path resource [spring.xml]: Instantiation of bean failed; nested exception is java.lang.IllegalStateException: No bean class specified on bean definition 
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313) 
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) 
at com.controller.Controller.main(Controller.java:17) 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spellChecker' defined in class path resource [spring.xml]: Instantiation of bean failed; nested exception is java.lang.IllegalStateException: No bean class specified on bean definition 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299) 
... 15 more 
Caused by: java.lang.IllegalStateException: No bean class specified on bean definition 
at org.springframework.beans.factory.support.AbstractBeanDefinition.getBeanClass(AbstractBeanDefinition.java:356) 
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:66) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098) 
... 19 more 

Это весь код, я написал любой орган может сказать мне, что это ошибка, я делаю здесь. Я буду благодарен.

Answer 1

<bean id="spellChecker" name="com.data.SpellChecker"/> 

Изменить имя атрибута атрибута класса

Answer 2

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> 

<bean id="editor" class="com.data.TextEditor"> 
    <property name="spellChecker"> 
     <bean class="com.data.SpellChecker"/> 
    </property> 
</bean> 

Answer 3

определение Bean отсутствует атрибут класса. Добавьте его:

<bean id="spellChecker" name ="com.data.SpellChecker" class="com.data.SpellChecker"/> 

Answer 4

Изменить имя атрибута атрибута класса

это решит вашу проблему

<!-- Definition for textEditor bean using inner bean --> 
    <bean id="textEditor" class="com.tutorialspoint.TextEditor"> 
    <property name="spellChecker"> 
     <bean id="spellChecker" class="com.tutorialspoint.SpellChecker"/> 
    </property> 
    </bean>