1 using System;  2 using System.Collections.Generic;  3 using System.Data;  4 using System.Data.SqlClient;  5 using System.Linq;  6 using System.Net;  7 using System.Text;  8 using System.Threading.Tasks;  9 using Newtonsoft.Json; 10 using Newtonsoft.Json.Linq; 11  12 namespace CY.CommonService 13 { 14     public class MapHelper 15     { 16         private static string ak = "********";//百度应用的密钥 17         public static string GetAddress(double latitude, double longitude) 18         { 19             string baiduaddress = ConvertBaidu(latitude, longitude); 20             string url = string.Format("http://api.map.baidu.com/geosearch/v3/nearby?ak={0}&geotable_id=85509&location={1}&radius=1000&sortby=distance:1", 21                 ak, baiduaddress); 22             using (WebClient client = new WebClient()) 23             { 24                 try 25                 { 26                     client.Encoding = Encoding.UTF8; 27                     var map = client.DownloadString(url); 28                     JObject jobject = JsonConvert.DeserializeObject(map) as JObject; 29                     string address = jobject["contents"][0]["address"].ToString(); 30                     int distance = Convert.ToInt32(jobject["contents"][0]["distance"].ToString()); 31                     string json = JsonHelper.JsonSerialize(new {address = address, distance = distance}); 32                     return json; 33                 } 34                 catch//(Exception) 35                 { 36                     string address = GetBaiduMapAddress(latitude, longitude); 37                     string json = JsonHelper.JsonSerialize(new {address = address, distance = 0}); 38                     return json; 39                 } 40             } 41              42         } 43  44         public static string GetBaiduMapAddress(double latitude, double longitude) 45         { 46             //string baiduaddress = ConvertBaidu(latitude, longitude); 47             string url = 48                 string.Format( 49                     "http://api.map.baidu.com/geocoder/v2/?ak={0}&location={1},{2}&output=json&pois=1&coordtype=wgs84ll", 50                     ak, latitude, longitude); 51             using (WebClient client = new WebClient()) 52             { 53                 try 54                 { 55                     client.Encoding = Encoding.UTF8; 56                     var map = client.DownloadString(url); 57                     JObject jobject = JsonConvert.DeserializeObject(map) as JObject; 58                     string address = jobject["result"]["formatted_address"].ToString(); 59                     return address; 60                 } 61                 catch//(Exception) 62                 { 63                     return "出错"; 64                 } 65             } 66         } 67  68         public static string ConvertBaidu(double latitude, double longitude) 69         { 70             string url = string.Format("http://api.map.baidu.com/geoconv/v1/?coords={0},{1}&ak={2}&output=json", 71                 longitude, latitude, ak); 72             using (WebClient client = new WebClient()) 73             { 74                 try 75                 { 76                     client.Encoding = Encoding.UTF8; 77                     var map = client.DownloadString(url); 78                     JObject jobject = JsonConvert.DeserializeObject(map) as JObject; 79                     string x = jobject["result"][0]["x"].ToString(); 80                     string y = jobject["result"][0]["y"].ToString(); 81                     string baiduaddress = x + "," + y; 82                     return baiduaddress; 83                 } 84                 catch//(Exception) 85                 { 86                     return "出错"; 87                 } 88             } 89         } 90  91         public static string SaveToBaidu(string latitude, string longitude,string address) 92         { 93             using (WebClient client = new WebClient()) 94             { 95                 try 96                 { 97                     string data = http://www.mamicode.com/string.Format("title={0}&address={1}&latitude={2}&longitude={3}&coord_type=1&ak={4}&geotable_id=85509", 98                         address, address, latitude, longitude, ak); 99                     client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");100                     byte[] sendData =http://www.mamicode.com/ Encoding.UTF8.GetBytes(data);101                     byte[] response = client.UploadData("http://api.map.baidu.com/geodata/v3/poi/create", "POST", sendData);102                     string responseString = Encoding.UTF8.GetString(response);103                     JObject jobject = JsonConvert.DeserializeObject(responseString) as JObject;104                     string status = jobject["status"].ToString();105                     string message = jobject["message"].ToString();106                     //string message = str.ToString();107                     return message;108                 }109                 catch//(Exception)110                 {111                     return "出错";112                 }113             }114         }145     }146 }