我一直在尝试使用Autowired注释的以下简单源代码。
TextEditor.java
package com.tutorialspoint;
import org.springframework.beans.factory.annotation.Autowired;
public class TextEditor {
private SpellChecker spellChecker;
@Autowired
public void setSpellChecker( SpellChecker spellChecker ){
this.spellChecker = spellChecker;
}
public SpellChecker getSpellChecker( ) {
return spellChecker;
}
public void spellCheck() {
spellChecker.checkSpelling();
}
}
SpellChecker.java
package com.tutorialspoint;
public class SpellChecker {
public SpellChecker(){
System.out.println("Inside SpellChecker constructor." );
}
public void checkSpelling(){
System.out.println("Inside checkSpelling." );
}
}
MainApp.java
package com.tutorialspoint;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainApp {
public static void main(String[] args) {
ApplicationContext context =
new ClassPathXmlApplicationContext("Beans.xml");
TextEditor te = (TextEditor) context.getBean("textEditor");
te.spellCheck();
}
}
的beans.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"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:annotation-config/>
<!-- Definition for textEditor bean without constructor-arg -->
<bean id="textEditor" class="com.tutorialspoint.TextEditor">
</bean>
<!-- Definition for spellChecker bean -->
<bean id="spellChecker" class="com.tutorialspoint.SpellChecker">
</bean>
但是我收到以下错误。我是Spring框架的初学者。如果有人帮助我,我将非常感激。感谢。
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.tutorialspoint.TextEditor.setSpellChecker(com.tutorialspoint.SpellChecker); nested exception is java.lang.NoSuchMethodError: org.springframework.core.MethodParameter.getParameterAnnotations()[Ljava/lang/Object;
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:543)
at org.springframework.beans.factory.annotation.InjectionMetadata.injectMethods(InjectionMetadata.java:117)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:253)
... 16 more
Caused by: java.lang.NoSuchMethodError: org.springframework.core.MethodParameter.getParameterAnnotations()[Ljava/lang/Object;
at org.springframework.beans.factory.config.DependencyDescriptor.getAnnotations(DependencyDescriptor.java:203)
at org.springframework.beans.factory.annotation.QualifierAnnotationAutowireCandidateResolver.isAutowireCandidate(QualifierAnnotationAutowireCandidateResolver.java:106)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.isAutowireCandidate(DefaultListableBeanFactory.java:377)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.isAutowireCandidate(DefaultListableBeanFactory.java:364)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:670)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:610)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:499)
... 18 more