问题
How can I add multiple packages in spring-servlet.xml file in context:component-scan element?
I have tried
<context:component-scan base-package=\"z.y.z.service\" base-package=\"x.y.z.controller\" />
and
<context:component-scan base-package=\"x.y.z.service, x.y.z.controller\" />
and
<context:component-scan base-package=\"x.y.z.service\" />
<context:component-scan base-package=\"x.y.z.controller\" />
but got error:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [x.y.z.dao.daoservice.LoginDAO] found for dependency:
回答1:
The following approach is correct:
<context:component-scan base-package="x.y.z.service, x.y.z.controller" />
Note that the error complains about x.y.z.dao.daoservice.LoginDAO, which is not in the packages mentioned above, perhaps you forgot to add it:
<context:component-scan base-package="x.y.z.service, x.y.z.controller, x.y.z.dao" />
回答2:
Annotation Approach
@ComponentScan({ "x.y.z", "x.y.z.dao" })
回答3:
You can add multiple base packages (see axtavt's answer), but you can also filter what's scanned inside the base package:
<context:component-scan base-package="x.y.z">
<context:include-filter type="regex" expression="(service|controller)\..*"/>
</context:component-scan>
回答4:
<context:component-scan base-package="x.y.z"/>
will work since the rest of the packages are sub packages of "x.y.z". Thus, you dont need to mention each package individually.
回答5:
Another general Annotation approach:
@ComponentScan(basePackages = {"x.y.z"})
回答6:
If x.y.z is the common package then you can use:
<context:component-scan base-package="x.y.z.*">
it will include all the package that is start with x.y.z like: x.y.z.controller,x.y.z.service etc.
回答7:
For Example you have the package "com.abc" and you have multiple packages inside it, You can use like
@ComponentScan("com.abc")
来源：https://stackoverflow.com/questions/5269450/multiple-packages-in-contextcomponent-scan-spring-config