Pass array data from javascript in browser to spring mvc controller using ajax

Question

I would like to pass an array from javascript in web browser to a Spring MVC controller using AJAX

In javascript, I have

var a = [];
a[0] = 1;
a[1] =         


        

Answer 1

It is very simple passing such data to the Spring MVC controller, when you have in mind that data is being parsed from string. So if you want to get an array/list in the controller - pass a stringified version of the array:

public String method(
        @RequestParam(value = "stringParam") String stringParam,
        @RequestParam(value = "arrayParam") List arrayParam) {
    ...
}

and the corresponding javascript with jQuery would be like:

$.post("/urlToControllerMethod",
    {
        "stringParam" : "test",
        "arrayParam" : [1, 2, 3, "test"].toString()
    }
);

Note: the parameter type

List arrayParam

could be as well replaced with the array equivalent

String[] arrayParam