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574 B
ReStructuredText
17 lines
No EOL
574 B
ReStructuredText
.. _-headerValueByName-java-:
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headerValueByName
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=================
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Description
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-----------
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Extracts the value of the HTTP request header with the given name.
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If no header with a matching name is found the request is rejected with a ``MissingHeaderRejection``.
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If the header is expected to be missing in some cases or to customize
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handling when the header is missing use the :ref:`-optionalHeaderValueByName-java-` directive instead.
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Example
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-------
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.. includecode:: ../../../../code/docs/http/javadsl/server/directives/HeaderDirectivesExamplesTest.java#headerValueByName |