百度地图定位，并获取当前省市区Id

最新推荐文章于 2025-06-15 15:41:46 发布

原创最新推荐文章于 2025-06-15 15:41:46 发布 · 2.2w 阅读

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这篇博客展示了如何使用百度地图API获取用户的地理位置信息，包括省份、城市和区域，然后通过发送Ajax请求到后台接口，根据获取到的城市名称查询对应的城市ID。文章中包含JavaScript代码示例和C#后端接口实现。

    <!-- 百度地图 -->
    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=FbzOyQ4YujPrZsxiQKoB07aB"></script> 
    <script>
        //获取地里位置 Start
        $(function () {  
            $("#demo1").val("正在获取您的位置...");
            var geolocation = new BMap.Geolocation();
            var gc = new BMap.Geocoder();

            geolocation.getCurrentPosition(function (r) {
                if (this.getStatus() == BMAP_STATUS_SUCCESS) {
                    //appLat = r.point.lat;
                    //appLng = r.point.lng;

                    var pt = r.point;
                    gc.getLocation(pt, function (rs) {
                        var addComp = rs.addressComponents;

                        var province = addComp.province;
                        var city = addComp.city;
                        var area = addComp.district;

                        if (province != "" && city != "" && area != "") {
                            $("#demo1").val(province + " " + city + " " + area);
                        }

                        $.ajax({
                            type: 'POST',
                            url: "http://localhost:11111/api/BDCheckCity/",   //根据城市名称，查询城市Id
                            data: { proName: province, cityName: city, areaName: area },
                            success: function (data) {
                                if (data.status) {
                                    //console.log(data)
                                    //绑定省市区定位城市
                                    html = '<li><span>' + province + '</span><i class="fa fa-angle-up" aria-hidden="true"></i></li>\
                                            <li><span>'+ city + '</span><i class="fa fa-angle-up" aria-hidden="true"></i></li>\
                                            <li><span>'+ area + '</span><i class="fa fa-angle-up" aria-hidden="true"></i></li>';

                                    $("#PCALi").html(html);
                                } else {
                                    layer.open({ content: "正在获取GPS信息", time: 2 });
                                }
                            }
                        });
                    });
                }
                else {
                    layer.open({ content: "定位失败，请重试!", time: 2 });
                }
            }, { enableHighAccuracy: true });
        });
        //获取地里位置 End
    </script>

       #region 根据所属城市查询城市ID

        /// <summary>根据所属城市查询城市ID
        /// </summary>
        /// <param name="cityName"></param>
        /// <returns></returns>
        [Route("api/BDCheckCity/")]
        [HttpPost]
        public HttpResponseMessage BDCheckCity()
        {
            var proName = MSCL.RequestHelper.GetString("proName");
            var cityName = MSCL.RequestHelper.GetString("cityName");
            var areaName = MSCL.RequestHelper.GetString("areaName");
            ReturnData rd = new ReturnData();
            string pId = "0", cId = "0", aId = "0";

            Core.Model.Areas areasEntity = null;

            if (!string.IsNullOrEmpty(proName))
            {
                //根据城市获取地区id
                var pEntity = Core.Bll.Areas.GetAll().Where(e => e.Name == proName);
                if (pEntity != null && pEntity.Count() > 0)
                {
                    areasEntity = pEntity.FirstOrDefault();
                }
                pId = areasEntity.Id.ToString();
            }

            if (!string.IsNullOrEmpty(cityName))
            {
                var cEntity = JianKu.Core.Bll.Areas.GetAll().Where(e => e.Name == cityName);
                if (cEntity != null && cEntity.Count() > 0)
                {
                    areasEntity = cEntity.FirstOrDefault();
                }
                cId = areasEntity.Id.ToString();
            }
            else
            {
                rd.Status = 3;
                rd.Msg = "正在获取GPS信息";
            }

            if (!string.IsNullOrEmpty(areaName))
            {
                var aEntity = Core.Bll.Areas.GetAll().Where(e => e.Name == areaName);
                if (aEntity != null && aEntity.Count() > 0)
                {
                    areasEntity = aEntity.FirstOrDefault();
                }
                aId = areasEntity.Id.ToString();
            }

            ResponseResult obj = new ResponseResult();
            obj.status = true;
            obj.message = pId + "," + cId + "," + aId;  //返回当前城市Id

            var resultObj = JsonConvert.SerializeObject(obj);
            HttpResponseMessage result = new HttpResponseMessage { Content = new StringContent(resultObj, Encoding.GetEncoding("UTF-8"), "application/json") };
            return result;
        }

        #endregion