I'm very new to java play framework. I've set up all the normal routes like /something/:somthingValue and all the others. Now I want to create route the accepts query parameters like
/something?x=10&y=20&z=30
Here I want to get all the params after "?" as key==>value pair.
You can wire in your query parameters into the routes file:
http://www.playframework.com/documentation/2.0.4/JavaRouting in section "Parameters with default values"
Or you can ask for them in your Action:
public class Application extends Controller {
public static Result index() {
final Set<Map.Entry<String,String[]>> entries = request().queryString().entrySet();
for (Map.Entry<String,String[]> entry : entries) {
final String key = entry.getKey();
final String value = Arrays.toString(entry.getValue());
Logger.debug(key + " " + value);
}
Logger.debug(request().getQueryString("a"));
Logger.debug(request().getQueryString("b"));
Logger.debug(request().getQueryString("c"));
return ok(index.render("Your new application is ready."));
}
}
For example the http://localhost:9000/?a=1&b=2&c=3&c=4 prints on the console:
[debug] application - a [1]
[debug] application - b [2]
[debug] application - c [3, 4]
[debug] application - 1
[debug] application - 2
[debug] application - 3
Note that c is two times in the url.
In Play 2.5.x, it is made directly in conf/routes, where one can put default values:
# Pagination links, like /clients?page=3
GET /clients controllers.Clients.list(page: Int ?= 1)
In your case (when using strings)
GET /something controllers.Somethings.show(x ?= "0", y ?= "0", z ?= "0")
When using strong typing:
GET /something controllers.Somethings.show(x: Int ?= 0, y: Int ?= 0, z: Int ?= 0)
See: https://www.playframework.com/documentation/2.5.x/JavaRouting#Parameters-with-default-values for a longer explanation.
You can get all query string parameters as a Map:
Controller.request().queryString()
This method return a Map<String, String[]> object.
In Java/Play 1.x you get them with:
Request request = Request.current();
String arg1 = request.params.get("arg1");
if (arg1 != null) {
System.out.println("-----> arg1: " + arg1);
}
You can use FormFactory:
DynamicForm requestData = formFactory.form().bindFromRequest();
String firstname = requestData.get("firstname");
