GET
- Dart course
- Advanced
- Lesson 32/83
- 5 min
Learn GET requests with http.get.
GET requests
get(url) makes a GET request. url is a Uri. The returned Response's statusCode and body fields are read.
Example: var r = await get(Uri.parse('https://api.example.com/users')); print(r.statusCode); print(r.body);. 200 means success; body is JSON text.
GET requests carry no body; parameters go in the URL as a query string: Uri.parse('...?page=2').
Query strings
To add parameters to a URL, use the queryParameters field of Uri: Uri(scheme: 'https', host: 'api.example.com', path: '/users', queryParameters: {'page': '2'}).
This produces a query string like ?page=2. This structural method is preferred over manual string concatenation.
Multiple parameters are joined with & automatically; URL encoding is done automatically.
Practice Build a Uri with query
Inside main add var u = Uri(scheme: 'https', host: 'api.example.com', path: '/users', queryParameters: {'page': '2'});. Add print(u.host); and print(u.query);.
Starter code
void main() {
// build a URL with Uri constructor; add page=2 query
// print host and query
}Sample solution
void main() {
var u = Uri(
scheme: 'https',
host: 'api.example.com',
path: '/users',
queryParameters: {'page': '2'},
);
print(u.host);
print(u.query);
}Expected output
api.example.com page=2
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 GET call
var r = await ____(Uri.parse(url));var r = await get(Uri.parse(url));Explanation: get(Uri) makes a GET request.
2 Does a GET request have a body?
- Only form
- Yes, always
- Only JSON
- No, parameters go in the URL Correct answer
Explanation: GET carries no body; parameters go in the URL as a query string.
3 Match the GET parts
| Term | Meaning |
|---|---|
get(Uri) |
Request function |
statusCode |
200 |
body |
Response body |
queryParameters |
URL parameters |