javax.ws.rs

Annotation Type HeaderParam

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

Binds the value(s) of a HTTP header to a resource method parameter, resource class field, or resource class bean property. A default value can be specified using the DefaultValue annotation.

The type T of the annotated parameter, field or property 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 header is used.

Because injection occurs at object creation time, use of this annotation on resource class fields and bean properties is only supported for the default per-request resource class lifecycle. Resource classes using other lifecycles should only use this annotation on resource method parameters.

See Also:

DefaultValue, HttpHeaders

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
String	value Defines the name of the HTTP header whose value will be used to initialize the value of the annotated method argument, class field or bean property.

Element Detail

value

public abstract String value

Defines the name of the HTTP header whose value will be used to initialize the value of the annotated method argument, class field or bean property. Case insensitive.