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Java Enterprise Edition (EE)

FormParam


javax.ws.rs
Annotation Type FormParam

@Target(value={PARAMETER,METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface FormParam

Binds the value(s) of a form parameter contained within a request entity body to a resource method parameter. Values are URL decoded unless this is disabled using the Encoded annotation. A default value can be specified using the DefaultValue annotation. If the request entity body is absent or is an unsupported media type, the default value is used. The type T of the annotated parameter must either:

  1. Be a primitive type
  2. Have a constructor that accepts a single String argument
  3. Have a static method named valueOf or fromString that accepts a single String argument (see, for example, Integer.valueOf(String))
  4. Be List<T>, Set<T> or SortedSet<T>, where T satisfies 2 or 3 above. The resulting collection is read-only.

If the type is not one of those listed in 4 above then the first value (lexically) of the parameter is used.

Note that, whilst the annotation target permits use on fields and methods, this annotation is only required to be supported on resource method parameters.

See Also:
DefaultValue, Encoded

Required Element Summary
 java.lang.String value
          Defines the name of the form parameter whose value will be used to initialize the value of the annotated method argument.
 

Element Detail

value

public abstract java.lang.String value
Defines the name of the form parameter whose value will be used to initialize the value of the annotated method argument. The name is specified in decoded form, any percent encoded literals within the value will not be decoded and will instead be treated as literal text. E.g. if the parameter name is "a b" then the value of the annotation is "a b", not "a+b" or "a%20b".



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