formFieldMap
Description
Extracts all HTTP form fields at once as a Map[String, String]
Map<String, String>
mapping form field names to form field values. Data posted from HTML Forms is either of type application/x-www-form-urlencoded
or of type multipart/form-data
.
If form data contain a field value several times, the map will contain the last one.
See formFields for an in-depth description.
Warning
Use of this directive can result in performance degradation or even in OutOfMemoryError
s. See formFieldSeqformFieldList for details.
Example
- Scala
-
source
val route = formFieldMap { fields => def formFieldString(formField: (String, String)): String = s"""${formField._1} = '${formField._2}'""" complete(s"The form fields are ${fields.map(formFieldString).mkString(", ")}") } // tests: Post("/", FormData("color" -> "blue", "count" -> "42")) ~> route ~> check { responseAs[String] shouldEqual "The form fields are color = 'blue', count = '42'" } Post("/", FormData("x" -> "1", "x" -> "5")) ~> route ~> check { responseAs[String] shouldEqual "The form fields are x = '5'" }
- Java
-
source
import static org.apache.pekko.http.javadsl.server.Directives.complete; import static org.apache.pekko.http.javadsl.server.Directives.formFieldMap; final Function<Map<String, String>, String> mapToString = map -> map.entrySet().stream() .map(e -> e.getKey() + " = '" + e.getValue() + "'") .collect(Collectors.joining(", ")); final Route route = formFieldMap(fields -> complete("The form fields are " + mapToString.apply(fields))); // tests: final FormData formDataDiffKey = FormData.create(Pair.create("color", "blue"), Pair.create("count", "42")); testRoute(route) .run(HttpRequest.POST("/").withEntity(formDataDiffKey.toEntity())) .assertEntity("The form fields are color = 'blue', count = '42'"); final FormData formDataSameKey = FormData.create(Pair.create("x", "1"), Pair.create("x", "5")); testRoute(route) .run(HttpRequest.POST("/").withEntity(formDataSameKey.toEntity())) .assertEntity("The form fields are x = '5'");
1.1.0