org.springframework.beans.factory.BeanCreationException: Error creating bean with name '***'



錯誤如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'newsService' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.zhym.service.NewsService]: Specified class is an interface

Caused by:

org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.zhym.service.NewsService]: Specified class is an interface

錯誤原因：首先確定service接口的實作類沒有錯，然後檢視applicationContext.xml中對此service的聲明，是否把bean中class後的包名中的service實作了寫成了service接口。比如service接口名:UserService.java，其實作類為UserServiceImpl.java，而你的bean寫成了<bean name="userService" class="com.zyy.service.UserService><!--省略中。。。--></bean>，這裡隻需把class改為：class="com.zyy.service.UserServiceImpl"