Dart Uri host
Syntax & Examples

Uri.host property

The `host` property in Dart's Uri class returns the host part of the authority component.

Syntax of Uri.host

The syntax of Uri.host property is:

 String host

This host property of Uri returns the host part of the authority component.

Return Type

Uri.host returns value of type String.


✐ Examples

1 URI with authority and host

In this example,

  1. We create a Uri object uri1 by parsing the string 'http://example.com/path'.
  2. We use the host property to get the host part of the URI's authority component.
  3. We then print the result to standard output.

Dart Program

void main() {
  Uri uri1 = Uri.parse('http://example.com/path');
  String host1 = uri1.host;
  print('Host of URI 1: $host1');
}

Output

Host of URI 1: example.com

2 URI without authority

In this example,

  1. We create a Uri object uri2 by parsing the string 'mailto:user@example.com'.
  2. We use the host property, which returns an empty string as there is no authority component in the URI.
  3. We then print the result to standard output.

Dart Program

void main() {
  Uri uri2 = Uri.parse('mailto:user@example.com');
  String host2 = uri2.host;
  print('Host of URI 2: $host2');
}

Output

Host of URI 2:

3 URI without scheme

In this example,

  1. We create a Uri object uri3 by parsing the string 'file:///path/to/file'.
  2. We use the host property, which returns an empty string as there is no authority component in the URI.
  3. We then print the result to standard output.

Dart Program

void main() {
  Uri uri3 = Uri.parse('file:///path/to/file');
  String host3 = uri3.host;
  print('Host of URI 3: $host3');
}

Output

Host of URI 3:

Summary

In this Dart tutorial, we learned about host property of Uri: the syntax and few working examples with output and detailed explanation for each example.