[GIS] Getting current center of view in OpenLayers 3

apigeoserveropenlayers

I would like the get the center (coordinates) of the current view. I need it for the geoserver print module.

I've found the code var center= ol.extent.getCenter({}); but it unfortunately doesn't work. Furthermore I've found a code in the API (getview.getcenter()), but it only shows the initial center and it is not changing when I explore on the map.

This is my code, it works fine except the center params… It gives back tha same values everytime.

var configs = {

    "layout":"A4 portrait",
    "srs":"EPSG:3857",
    "units":"meter",
    "dpi":300,
    "outputFilename": "valami",
    "layers":[
     {baseURL: 'xy', 
            singleTile: false, 
            type: 'OSM', 
            maxExtent: [-20037508.3392,-20037508.3392,20037508.3392,20037508.3392], 
            tileSize: [256, 256], 
            extension: 'png',
            opacity: 1,
            resolutions: [156543.0339, 78271.51695, 39135.758475, 19567.8792375, 9783.93961875, 4891.969809375, 2445.9849046875, 1222.99245234375, 611.496226171875, 305.7481130859375, 152.87405654296876, 76.43702827148438, 38.21851413574219, 19.109257067871095, 9.554628533935547, 4.777314266967774, 2.388657133483887, 1.1943285667419434, 0.5971642833709717] 
        },  
{"baseURL":"xy",
        "opacity":1,
        "singleTile":true,
        "customParams":{},
        "type":"WMS",
        "layers":["mission:corine_ps"],
        "format":"image/png",
        "styles":[],
        "overview":true},
{"baseURL":"xy",
        "opacity":1,
        "singleTile":true,
        "customParams":{},
        "type":"WMS",
        "layers":["mission:utak_ps"],
        "format":"image/png",
        "styles":[],
        "overview":true},        
            ],
    "pages":[
        {
        "center":[map.getView().getCenter()[1],map.getView().getCenter()[0]],
        "mapTitle":"",
        "comment":" ",
        "scale": 1000000,
        "rotation":0,
        "icon":""}],
    "legends": [
        {
            "classes": [
                {
                    "icons": [
                        ""
                    ],
                    "name": "",
                    "iconBeforeName": true
                }
            ],
            "name": "utak"
        }
    ]
    };

 var printUrl= 'xy?spec='+JSON.stringify(configs);
Related Question