Representation of a header value in the form:
value; parameter1=value1; parameter2=value2
HeaderValue can be used to conveniently build and parse header values on this form.
To build an accepts header with the value
text/plain; q=0.3, text/html
use code like this:
HttpClientRequest request = ...;
var v = new HeaderValue("text/plain", {"q": "0.3"});
request.headers.add(HttpHeaders.ACCEPT, v);
request.headers.add(HttpHeaders.ACCEPT, "text/html");
To parse the header values use the parse static method.
HttpRequest request = ...;
List<String> values = request.headers[HttpHeaders.ACCEPT];
values.forEach((value) {
HeaderValue v = HeaderValue.parse(value);
// Use v.value and v.parameters
});
An instance of HeaderValue is immutable.
- Implemented by
Static Methods
Constructors
- HeaderValue([String value = "", Map<String, String> parameters ])
-
Creates a new header value object setting the value and parameters.
factory
Properties
- parameters → Map<String, String>
-
Gets the map of parameters.
read-only - value → String
-
Gets the header value.
read-only - hashCode → int
-
The hash code for this object.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
toString(
) → String -
Returns the formatted string representation in the form:
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited