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java - Spring 的外部项目中存在的自动布线类

问题描述

嗨，我有两个项目，一个是休息模块，它具有端点，web.xml和dispathcer-servlet.xml，我有另一个项目，它具有业务逻辑并作为依赖项添加到 REST 模块。当我在 rest 模块中自动连接业务项目中存在的 bean 时，我得到 org.springframework.beans.factory.BeanCreationException. 但是其余模块中的 bean 是自动装配的。

BusinessModule com.test.service--packagename BaseService.java

RestModule com.test.controller --- 包名 BaseController.java

现在我在 BaseController.java 和我的 dispatcher-servlet.xml 中自动装配 BaseService.java，如果我提到它正在自动装配 BaseService.java bean，但它不会识别 @RestController 因为 BaseController.java 基本包名称是 com .test --- 如果我给 

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private ; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [] 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)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1218)
    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:778)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:666)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:632)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:680)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:551)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:492)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.java:161)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.init(ServletWrapper.java:342)
    ... 91 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private  nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [] 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)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 109 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [] 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)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1380)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1126)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1021)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
    ... 111 more

标签： javaspring

解决方案

Rest 模块在 Business 模块中看不到 Bean，您可能需要执行以下操作：

@Configuration
@ComponentScan(basePackages = "org.something.business")
public class BusinessConfig {

}


@Configuration
@Import(BusinessConfig.class)
@ComponentScan(basePackages = "org.something.rest")
public class RestConfig {

}

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