一.根据地址解析坐标

1.官方文档地址

2.c#封装方法

///

/// 根据地址解析经纬度

///

/// 地址

/// 城市

///

public static string GetMapLatOrLong(string address, string city)

{

string posturl = "http://api.map.baidu.com/geocoder?address=" + address + "&output=json&key=自己的key&city=" + city + "";

string postret = HttpGet(posturl);

//返回json数据：{ "status":"OK","result":{ "location":{ "lng":经度,"lat":纬度 },"precise":1,"confidence":75,"level":"\u5546\u52a1\u5927\u53a6"} }

string citylist = "";

JsonData jd = JsonMapper.ToObject(postret);

if (jd["status"].ToString() == "OK")

{

citylist = "{\"lng\":\""+ jd["result"]["location"]["lng"].ToString()

+ "\",\"lat\":\""+ jd["result"]["location"]["lat"].ToString()

+ "\",\"level\":\""+ jd["result"]["level"].ToString() + "\"}";

}

else

{

citylist = "{\"lng\":\"\",\"lat\":\"\",\"level\":\"\"}";

}

return citylist;

}

3.调用

string retcity= GetMapLatOrLong("地址","城市");

Response.Write(retcity);

二.根据坐标解析地址

1.官方文档地址

2.c#封装方法

///

/// 按照定位的坐标，获取省市县

///

///

///

///

public static string DecodeMapPostion(string lat, string lng)

{

string posturl = "http://api.map.baidu.com/geocoder/v2/?output=json&ak=自己的key&location=" + lat + "," + lng;

string postret =HttpGet(posturl);

string citylist = "";

JsonData jd = JsonMapper.ToObject(postret);

if (jd["status"].ToString() == "0")

{

//具体地址

string jtaddrs = jd["result"]["formatted_address"].ToString();

string bussinsaddrs = jd["result"]["sematic_description"].ToString();

citylist = "{\"province\":\"" + jd["result"]["addressComponent"]["province"].ToString() + "\",\"city\":\""

+ jd["result"]["addressComponent"]["city"].ToString() +

"\",\"area\":\"" + jd["result"]["addressComponent"]["district"].ToString() + "\",\"address\":\""

+ HtmlEncode(jtaddrs) + "\"}";

}

else

{

citylist = "{\"province\":\"\",\"city\":\"\",\"area\":\"\"}";

}

return citylist;

}

3.调用

string retcity= DecodeMapPostion(lat,lng);

Response.Write(retcity);

原文：https://www.cnblogs.com/dsjbk/p/12659055.html