Исходное тестирование пружинного блока

Question

Я пытаюсь проверить Spring MVC Controller, но у меня есть некоторые проблемы. Я буду копировать трассировку стека для более четкого объяснения. Я думаю, что проблема возникает из конфигурации applicationContext, но я не знаю, как ее исправить.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'audioCaptchaServlet': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.context.support.MessageSourceAccessor profiles.captcha.AudioCaptchaServlet.msa; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'msa' defined in class path resource [applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.context.support.MessageSourceAccessor]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.springframework.context.support.MessageSourceAccessor.<init>() 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) 
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:96) 
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:44) 
    at org.springframework.test.context.TestContext.buildApplicationContext(TestContext.java:198) 
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:233) 
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:126) 
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:85) 
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:231) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:95) 
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:139) 
    at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51) 
    at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44) 
    at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27) 
    at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37) 
    at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.context.support.MessageSourceAccessor profiles.captcha.AudioCaptchaServlet.msa; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'msa' defined in class path resource [applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.context.support.MessageSourceAccessor]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.springframework.context.support.MessageSourceAccessor.<init>() 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) 
    ... 30 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'msa' defined in class path resource [applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.context.support.MessageSourceAccessor]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.springframework.context.support.MessageSourceAccessor.<init>() 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1101) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1046) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533) 
    ... 32 more 
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.context.support.MessageSourceAccessor]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.springframework.context.support.MessageSourceAccessor.<init>() 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:85) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1094) 
    ... 43 more 
Caused by: java.lang.NoSuchMethodException: org.springframework.context.support.MessageSourceAccessor.<init>() 
    at java.lang.Class.getConstructor0(Unknown Source) 
    at java.lang.Class.getDeclaredConstructor(Unknown Source) 
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80) 
    ... 44 more 

applicationContext.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:mvc="http://www.springframework.org/schema/mvc" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/task 
    http://www.springframework.org/schema/task/spring-task-3.2.xsd 
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
    http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.2.xsd"> 

    <context:component-scan base-package="com.profiles" /> 

    <context:annotation-config/> 

    <bean id="msa" 
     class="org.springframework.context.support.MessageSourceAccessor"></bean> 

    <bean id="audioCaptchaServlet" class="profiles.captcha.AudioCaptchaServlet"></bean> 

</beans> 

Answer 1

MessageSourceAccessor вспомогательный класс для легкого доступа к сообщениям из MessageSource, обеспечивая различные перегруженные методы GetMessage. Он не имеет конструктора по умолчанию с нулевым аргументом. Этот компонент зависит от MessageSource bean, который может быть зарегистрирован, как показано ниже.

<bean id="messageSource" 
    class="org.springframework.context.support.ResourceBundleMessageSource"> 
    <property name="basename"> 
     <value>#Path to properties files#</value> 
    </property> 
</bean> 

А затем вводят эту ссылку на MessageSourceAccessor через инъекции конструктора.

<bean id="msa" 
    class="org.springframework.context.support.MessageSourceAccessor"> 
    <constructor-arg ref="messageSource"> 
</bean>