Custom regex matching for @PathVariable [SPR-5812]

[spring-projects-issues]

Scott Andrews opened SPR-5812 and commented

The pattern for matching @PathVariable values in a URI is currently fixed. This makes it impossible for the request dispatcher to pick the intended mapping for complex mappings.

For example, the current infrastructure cannot distinguish between these two mappings:

{symbolicName}-{version}.jar
{symbolicName}-sources-{version}.jar

The "symbolicName" path variable is greedy, and the first mapping is selected for both values:

com.example-1.0.0.jar
com.example-sources-1.0.0.jar

The value of {symbolicName} will be "com.example" or "com.example-sources" respectively.

By specifying a custom regex pattern for the variable, a user can restrict the greediness of the first variable to the indented segment of the URI.

{symbolicName:[\w\.]+}-{version:[\w\.]+}.jar
{symbolicName:[\w\.]+}-sources-{version:[\w\.]+}.jar

It may be desirable to locate the regex in the @PathVariable annotation instead of in the @RequestMapping value.

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Affects: 3.0 M3

Referenced from: commits ed98bf0