求助，关于spring，bean创建失败的问题

• 问题：测试注入category类的bean时总是不成功，之前测试过user的是没问题的，写法差不多，实在是找不到错误，跪求大神帮忙。。。
• 这是beans.xml

	<!-- hibernate整合到Spring中 -->
	<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
	<property name="locations">
	<value>classpath:jdbc.properties</value>
	</property>
	</bean>
	
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${jdbc.driverClassName}"/>
    <property name="url" value="${jdbc.url}"/>
    <property name="username" value="${jdbc.username}"/>
    <property name="password" value="${jdbc.password}"/>
</bean>
<context:property-placeholder location="jdbc.properties"/>

  <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="packagesToScan">
      <list>
        <value>com.jqh.shopping.model</value>
      </list>
    </property>
    <property name="hibernateProperties">
      
      
      <props>
      	<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
      	<prop key="hibernate.show_sql">false</prop>
      	<prop key="hibernate.hbm2ddl.auto">update</prop>
      	<prop key="javax.persistence.validation.mode">none</prop>
      	<!--   javax.persistence.validation.mode 默认情况下是auto（自动），就是说，
      	如果不设置的话，它会自动去你的classpath下面找一个bean-validation**包，
      	但是找不到，所以beanvalitionFactory错误。 -->
      </props>
    </property>
  </bean>
  
    
	<!-- 初始化bean -->
	<bean id="hibernateUtil" class="com.jqh.shopping.util.HibernateUtil"></bean>
	<bean id="userDao" class="com.jqh.shopping.dao.impl.UserDAOImpl"></bean>
	<bean id="userService" class="com.jqh.shopping.service.impl.UserServiceImpl"></bean>
	<bean id="categoryService" class="com.jqh.shopping.service.impl.CategoryServiceImpl"></bean>
	
</beans>

• 这是注入类的地方以及相关测试的方法

private CategoryDao categoryDao;
	
	
	public CategoryDao getCategoryDao() {
		return categoryDao;
	}
	
	@Resource
	public void setCategoryDao(CategoryDao categoryDao) {
		this.categoryDao = categoryDao;
	}

	@Override
	public boolean addTopCategory(String text,String description) {
		Category category = new Category();
		category.setText(text);
		category.setDescription(description);
		category.setParent(0);//父节点的id为0
		category.setLeaf(true);
		return categoryDao.save(category);
	}

• 这是测试类

package com.jqh.shopping.service.impl;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.jqh.shopping.service.CategoryService;

public class TestCategoryServiceImpl {
	@Test
	public void testAddTopCategory(){
		ApplicationContext ctx = new ClassPathXmlApplicationContext("spring_xml_config/beans.xml");
		CategoryService categoryService =(CategoryService) ctx.getBean("categoryService");
		
		String text="零食类";
		String description="所有分类的描述";
		categoryService.addTopCategory(text,description);
	}
}

• category实体类的数据库表已经创建成功了。。
• 这是报错信息

  org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryService': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.jqh.shopping.dao.CategoryDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
  	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:306)
  	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1120)
  	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
  	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
  	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
  	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
  	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
  	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
  	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)
  	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
  	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
  	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
  	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
  	at com.jqh.shopping.service.impl.TestCategoryServiceImpl.testAddTopCategory(TestCategoryServiceImpl.java:12)
  	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  	at java.lang.reflect.Method.invoke(Method.java:498)
  	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
  	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
  	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
  	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
  	at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
  	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
  	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
  	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
  	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
  	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
  	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
  	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
  	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
  	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
  	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
  	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
  	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
  	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
  	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
  Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.jqh.shopping.dao.CategoryDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
  	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:949)
  	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818)
  	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:730)
  	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:438)
  	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)
  	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:550)
  	at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:159)
  	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
  	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)
  	... 36 more
  
  

   

这个是哪个Dao找不到没有注册进去的原因，你在service里面加上private CategoryDao categoryDao; 然后再把

public void setCategoryDao(CategoryDao categoryDao) {

this.categoryDao = categoryDao;

}这个set方法写上就行了，spring在扫描这个service的时候，会执行其中的set相关方法进行赋值，前提是你要配置一个dao的bean在xml里面

报错很明显，找不到dao这个bean 啊，你要往service注入dao，为啥要把

@Resource

public void setCategoryDao(CategoryDao categoryDao) {

this.categoryDao = categoryDao;

}这一句写到dao中呢？  这一句应该放到service中，同时要在dao上添加@Component注解

userService这个对象能获取到吗

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