java - How to get locale within JSTL with dash as separator? -

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pagecontext.request.locale return locale "en_us"

but current javascript library (dojo) seeking 'en-us', 'es-es'..etc

is there api use other customized javascript function so?

the locale class has tolanguagetag() method want: http://docs.oracle.com/javase/7/docs/api/java/util/locale.html#tolanguagetag()


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