注入自動裝配的依賴關係在jar文件中失敗

Question

我在我的war文件的lib文件夾下放了一個jar文件。在jar裏面，我有一些使用@Autowired fileds的類。罐子裏面，ApplicationContext中的XML我已經給

<context:component-scan base-package="com.main.java.mypath" /> 

代碼：

package com.main.java.mypath.client; 

@Component 
public class ServiceProvider { 

    @Autowired 
    private StoreField storeField; 




package com.main.java.mypath.data; 
public interface StoreField { 
} 

錯誤：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'serviceProvider': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.main.java.mypath.data.StoreField com.main.java.mypath.client.ServiceProvider.storeField; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.main.java.mypath.data.StoreField] 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)} 

Answer 1

這是不可能的，只要你不注入的依賴」您的接口可以實現您的StoreField接口。確保它是作爲一個類實現的，並且在spring上下文中通過xml或annotation正確初始化。