如何从Java Rest服务在引导表中显示Java Hashmap.keySet（）？

Question

i'm trying to display a hashmap keyset in a bootstrap table, but only the first character is showing.

This is my rest service function:

@GET
@Path("getquizes")
@Produces(MediaType.APPLICATION_JSON)
public Collection<String> getQuizes() {
    System.out.println(activeQuizes.keySet());
    return activeQuizes.keySet();
}

It is working. This is what i am receive:

Received Json object

Here is my Html:

         <table data-toggle="table" id="tablequizes" class="display table table-bordered">
            <thead>
            <tr>
                <th datatype="String">Name</th>
            </tr>
            </thead>
        </table>

And my javascript:

function fetchQuizes() {
    $.ajax({
        url: 'rest/Quiz/getquizes',
        type: 'GET',
        datatype: 'json',
        success: function (data) {
            console.info(data);
            $('#tablequizes').bootstrapTable('load', data);
        },
        error: function (result) {
            console.info(result.responseText);
        }
    });
}

But the result is only showing the first character in the array:

Bootstrap datatable with hashmap keyset

Answer 1

I think you are getting wrong about what the keySet() is giving you:

Returns a Set view of the keys contained in this map.

You are getting only the key and not the value of the map. For getting the value use values()

Returns a Collection view of the values contained in this map

activeQuizes.values(); //Try with this.

Answer 2

You can try changing your ajax output content tablequizes to an Array with some name id in it in your JS.

Eg: [ {"name": "Quiz1"}, {"name": "Quiz2"} ] 

And modify the th tag

<th data-field="name">Name</th>

This should solve your problem.