find city using latitude and longitude

Recently used in accordance with the latitude and longitude calculation of the Earth's surface two distance between the formula, and then use JS to achieve a bit. There are probably two ways to calculate the distance between two points on the Earth's surface. The first is the default Earth is a smooth spherical surface, and then calculate the distance between any two points, this distance is called the Grea

This article mainly introduces how to use JavaScript to convert longitude and latitude to address. It is very good and has reference value, for more information, see # wiki/48.html "target =" _ blank "> JavaScript converts longitude and latitude to addresses, which is of great reference value, for more information, see

http://restapi.amap.com/v3/geocode/geo?key=xxxxxxxxxxxxxxxxs=rsv3city=35address= Xiapu County Watergate Yu zu xiang, fujianString addressstr = "http://restapi.amap.com/v3/geocode/geo?key=xxxxxxxxxxxxxxxxs=rsv3city=028 Address= ";String getaddress = httputils.get (Addressstr + urlencoded.encodestring (address));Jsonobject object = Jsonobject.parseobject (getaddress);Jsonarray geocodes = Object.getjsonarray ("Geocodes");Exceldetails details = ExcelDetails.dao.findById (ID);if (geocodes.size () = =

public static double Getdistance (double long1, double lat1, double long2,Double lat2) {Double A, B, R;R = 6378137; Earth radiusLAT1 = LAT1 * math.pi/180.0;LAT2 = Lat2 * math.pi/180.0;A = LAT1-LAT2;b = (long1-long2) * math.pi/180.0;Double D;Double SA2, SB2;SA2 = Math.sin (a/2.0);SB2 = Math.sin (b/2.0);D = 2* R* Math.asin (MATH.SQRT (SA2 * SA2 + math.cos (LAT1)* MATH.COS (LAT2) * SB2 * sb2));return D;}public static double Getangle (double lat_a, double lng_a, double lat_b, double lng_b){Double d

Copy Code code as follows: To query the address: Query results (latitude and longitude): Style= "Position:absolute; margin-top:30px; width:730px; height:590px; top:50; border:1px solid Gray; Overflow:hidden; " > The above is the entire content of the code, small partners can be used directly in the project Oh, do not tell me thank you, please call me Lei Feng Big ~