提交代码，根据地址名称获取经纬度

Mall.WebApi/Controllers/Product/AppletGuideCarController.cs

 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net.Http;
 using System.Threading.Tasks;
 using Mall.Common.API;
 using Mall.Common.Plugin;
@@ -426,6 +427,29 @@ namespace Mall.WebApi.Controllers.Product
             });
         }
 
+        /// <summary>
+        /// 根据地址获取经纬度
+        /// </summary>
+        /// <param name="requestMsg"></param>
+        /// <returns></returns>
+        [HttpPost]
+        public ApiResult GetLngAndLat(object requestMsg)
+        {
+            var req = JsonConvert.DeserializeObject<RequestParm>(requestMsg.ToString());
+            JObject prams = JObject.Parse(req.msg.ToString());
+            string address = prams.GetStringValue("Address");
+            var array = Common.Plugin.HttpHelper.GetGeocoderLatitude(address);
+            if (array[0] != "" && array[1] != "")
+            {
+                return ApiResult.Success("", new { lng = array[0], lat = array[1] });
+            }
+            else
+            {
+                return ApiResult.Failed("获取地址错误");
+            }
+        }
+
+
         #endregion
 
         #region 订单信息