Non recursive scan for packages in Spring

Question

Apparently, AnnotationConfigApplicationContext#scan() scans for packages recursively.

I am not sure of it, but one of my @Component classes apparently loaded without being explicitly mentioned anywhere except being inside of subpackage of mentioned package.

So first question: is it true that Spring scans package recursively?

The second question, if it was true, is how to disable this?

score 0 · Answer 1 · edited May 23 '17 at 12:08

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As noted in Spring @Component API

Indicates that an annotated class is a "component". Such classes are considered as candidates for auto-detection when using annotation-based configuration and classpath scanning.

About scanning and/or annotating configuration & settings check this answer, I can't explain it better

edited May 23 '17 at 12:08

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answered Jul 11 '16 at 12:51

Jordi Castilla

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Don't see any word about recursion? – Dims Jul 11 '16 at 13:53
@Dims AFAIK, anotating does not use recursion, autodetect/scanning, yes. – Jordi Castilla Jul 11 '16 at 14:12
So, the question is about scanning: is it recursive and how to control it? – Dims Jul 11 '16 at 14:16
for this check the link provided, but I think you cannot control recursion, just disable it – Jordi Castilla Jul 11 '16 at 14:17
How to disable it? – Dims Jul 11 '16 at 18:43
as @akostajti stated http://stackoverflow.com/questions/10725192/exclude-subpackages-from-spring-autowiring/10725541#10725541 – Jordi Castilla Jul 12 '16 at 07:01

score 0 · Answer 2 · edited May 23 '17 at 12:32

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About disabling sub-package scanning: I think this answers your question (or the second most voted answer for the question).

edited May 23 '17 at 12:32

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answered Jul 11 '16 at 14:23

akostajti

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score 0 · Answer 3 · answered Jul 11 '16 at 15:11

In your @Configuration file, it's possible to explicitly define which packages should be scanned via the @ComponentScan annotation:

e.g.

@Configuration
@ComponentScan(basePackages = "my.package.first, my.package.second,
               my.package.etc")

Note however that all @Components within the subpackages of these packages will automatically be included. If you wish to disable this, this can be done by applying a filter to @ComponentScan

i.e.

@ComponentScan(basePackages = "my.package", excludeFilters = 
               @ComponentScan.Filter(type = FilterType.ASPECTJ, 
               pattern = "my.package.*"))

Non recursive scan for packages in Spring

3 Answers3