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Log failures to load PropertySources when ignoreResourceNotFound = true [SPR-15218] #19783

spring-projects-issues opened this issue Feb 3, 2017 · 2 comments
in: core Issues in core modules (aop, beans, core, context, expression) type: enhancement A general enhancement


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spring-projects-issues commented Feb 3, 2017

Andrew Medworth opened SPR-15218 and commented

In ConfigurationClassParser.processPropertySource(), if ignoreResourceNotFound is set to true for a given property source and that property source is not loadable (e.g. because the file does not exist), no message is currently logged by Spring at any level.

This can make it extremely difficult to debug unexpected behaviour in property source resolution. For example, see the Repro main class in the referenced project on GitHub, which has a PropertySource referring to a non-existent property file.

The ultimate output of this program is myProp = ${mykey}, because the config file is not found and therefore the "mykey" variable substitution does not occur.

However, if the developer was expecting the config file to exist, and hence was surprised at the lack of variable substitution, the cause would be very difficult to diagnose from the application logs, because even at the highest level of logging, there is no message to indicate that Spring tried and failed to open Of course, real-world scenarios would probably be much more complex.

I propose that Spring's ConfigurationClassParser should be changed to log a message at debug level when a PropertySource with ignoreResourceNotFound = true cannot be loaded for any reason.

Affects: 4.3.6, 5.0 M4

Reference URL:

Issue Links:

Referenced from: pull request #1313, and commits 448ea4c, d6216fb

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spring-projects-issues commented Feb 8, 2017

Juergen Hoeller commented

Since we're logging an ignore-resource-not-found case for <context:property-placeholder> already, we should definitely do this for @PropertySource as well. Fixed for 4.3.7 now, with a consistent info-level log message in both scenarios.

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spring-projects-issues commented Feb 12, 2017

Andrew Medworth commented

Thanks very much - I see this commit on master:


And also this one on the 4.3.x branch:


I really appreciate you addressing this so promptly!

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in: core Issues in core modules (aop, beans, core, context, expression) type: enhancement A general enhancement
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