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spring - 组件扫描未按预期工作

问题描述

我有两个不同的应用程序，一个用于商业，一个用于休息。它们都存在于一个 EAR 中。休息是一场战争，生意是一个罐子。我在 Rest 应用程序中使用业务 jar。

在业务应用程序中，我使用 @component 注释对服务接口进行了注释。

业务模块 -- com.test.project.service -- 包名 BaseService.java -- 我试图在我的 Rest Controller 中自动装配的接口

REST 模块 com.test.project.controller -- 包名 BaseServiceController -- 我试图自动连接 BaseService.java 的控制器类

调度程序-servlet.xml

要在“com.test.project”包中注册我的业务和控制器类，我提到了 XML 配置，因为容器无法在 BaseServiceController.java 中自动连接 BaseService.java，我得到 BeanCreationException

但是，如果我提到我的基本包名称为“com.test.project.service”，BaseService.java 将自动连接到 BaseServiceController.java，但如果我试图在控制器中命中一个端点，我会得到 404，因为控制器是未在容器中注册

下面是我的 dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p"
    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.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <context:component-scan base-package="com.test.project" />
    <mvc:annotation-driven/>
    <context:annotation-config/>


</beans>

服务

public interface IBaseService {

    public void postData(String request) throws CustomException;

}

控制器

@RestController
@RequestMapping("/baseRequest")
public class BaseServiceController{
    @Autowired
    private IBaseService baseService;
    //private static final Logger log = LoggerFactory.getLogger(BaseServiceController.class);


    @RequestMapping(value = "/testRequest", method = RequestMethod.GET, consumes = MediaType.APPLICATION_JSON)
    public String invokeInfo() throws CustomException{


        return "Spring Test";
    }

}

下面是例外

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： springspring-mvcspring-bootspring-framework-beans

解决方案

如下创建一个新类

IBaseServiceImpl.java

@Service
public class IBaseServiceImpl implements IBaseService {

//Implement defined methods in interface IBaseService

}

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