注入自动装配的依赖关系在jar文件中失败

Question

我在我的war文件的lib文件夹下放了一个jar文件。在jar里面，我有一些使用@Autowired fileds的类。罐子里面，ApplicationContext中的XML我已经给

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

代码：

package com.main.java.mypath.client; 

@Component 
public class ServiceProvider { 

    @Autowired 
    private StoreField storeField; 




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

错误：

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

这是不可能的，只要你不注入的依赖”您的接口可以实现您的StoreField接口。确保它是作为一个类实现的，并且在spring上下文中通过xml或annotation正确初始化。