selectClickInteraction = new ol.interaction.Select({

    condition: ol.events.condition.click,

    style: changeStyle,

    //multi:true,

    //layers: searchDrawLayers,//过滤图层

    filter: function (feature, layer) {

        return layer === getLayerByTitle('企业');

    },//过滤图层

    hitTolerance:10,  //设置容差，

});　

function searchDrawLayers(layer) {

    var dics = layer.getProperties();

    if (dics["title"] == '企业') {

        return true;

    }

}