此工具类是， 模拟请求去调用百度地图api，来根据输入的地址获取相关信息、或者根据经纬度确定地址等。
注意看下面代码的注解，注解写的很清楚。
注意：需要申请百度key
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.apache.commons.lang.StringUtils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @function: 输入地名获取经纬度, 以及详细地址工具类
* @auther: Create by wyf
* @date: 2018/5/22
* @version: v1.0
*/
public class LngAndLatUtil {
/**
* 功能：传入地址，返回字符串经纬度和详细地址和邮政编码
*
* @param address
* @return
*/
public static String getLngAndLatAndAddress(String address) {
Map<String, Double> map = getLngAndLat(address);
String info = "";
if (map.size() != 0) {
String addressInfo = getAddress(String.valueOf(map.get("lng")), String.valueOf(map.get("lat")));
//String psotCode = getPostCode(addressInfo);
info = map.get("lng") + "," + map.get("lat") + "," + addressInfo;
}
return info;
}
/**
* 通过模糊地址获取经纬度
*
* @param address
* @return
*/
public static Map<String, Double> getLngAndLat(String address) {
Map<String, Double> map = new HashMap<String, Double>();
String url = "http://api.map.baidu.com/geocoder/v2/?address=" + address + "&output=json&ak=自己的key";
String json = loadJSON(url);
JSONObject obj = null;
try {
obj = JSONObject.fromObject(json);
if (obj.get("status").toString().equals("0")) {
double lng = obj.getJSONObject("result").getJSONObject("location").getDouble("lng");
double lat = obj.getJSONObject("result").getJSONObject("location").getDouble("lat");
map.put("lng", lng);
map.put("lat", lat);
//System.out.println("经度：" + lng + "---纬度：" + lat);
} else {
/* System.out.println("未找到相匹配的经纬度！");
Integer lng[] = {113, 114, 119, 115};
Integer lat[] = {34, 38, 26, 28};
int random = CreateDataUtil.getGaussianRandom(0, 3);
map.put("lng", lng[random].doubleValue());
map.put("lat", lat[random].doubleValue());*/
}
} catch (Exception e) {
e.printStackTrace();
Integer lng[] = {113, 114, 119, 115};
Integer lat[] = {34, 38, 26, 28};
int random = CreateDataUtil.getGaussianRandom(0, 3);
map.put("lng", lng[random].doubleValue());
map.put("lat", lat[random].doubleValue());
}
return map;
}
public static String loadJSON(String url) {
StringBuilder json = new StringBuilder();
try {
URL oracle = new URL(url);
URLConnection yc = oracle.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
yc.getInputStream()));
String inputLine = null;
while ((inputLine = in.readLine()) != null) {
json.append(inputLine);
}
in.close();
} catch (MalformedURLException e) {
} catch (IOException e) {
}
return json.toString();
}
/**
* 功能:通过经纬度获取地址
*
* @param lng
* @param lat
* @return
*/
public static String getAddress(String lng, String lat) {
String add = getAdd(lng, lat);
JSONObject jsonObject = JSONObject.fromObject(add);
JSONArray jsonArray = JSONArray.fromObject(jsonObject.getString("addrList"));
JSONObject j_2 = JSONObject.fromObject(jsonArray.get(0));
String allAdd = j_2.getString("admName");
String address_road = "";
if (j_2.containsKey("addr")) {
address_road = j_2.getString("addr");
}
String addressInfo = allAdd.replaceAll(",", "") + address_road;
return addressInfo;
}
public static String getAdd(String log, String lat) {
//lat 小 log 大
//参数解释: 纬度,经度 type 001 (100代表道路，010代表POI，001代表门址，111可以同时显示前三项)
String urlString = "http://gc.ditu.aliyun.com/regeocoding?l=" + lat + "," + log + "&type=010";
String res = "";
try {
URL url = new URL(urlString);
java.net.HttpURLConnection conn = (java.net.HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setRequestMethod("POST");
java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(conn.getInputStream(), "UTF-8"));
String line;
while ((line = in.readLine()) != null) {
res += line + "\n";
}
in.close();
} catch (Exception e) {
System.out.println("error in wapaction,and e is " + e.getMessage());
}
return res;
}
/**
* 通过地名获取邮政编码
*
* @param address
* @return
*/
public static String getPostCode(String address) {
String postCode = "";
String urlString = "http://cpdc.chinapost.com.cn/web/index.php?m=postsearch&c=index&a=ajax_addr&searchkey=" + address;
String json = loadJSON(urlString);
JSONObject obj = JSONObject.fromObject(json);
if ((Integer) obj.get("now_num") > 0) {
List list = (List) obj.get("rs");
for (Object result : (List) obj.get("rs")) {
JSONObject fromObject = JSONObject.fromObject(result);
if (Integer.valueOf(fromObject.get("POSTCODE").toString()) != -1) {
postCode = fromObject.get("POSTCODE").toString();
break;
}
}
} else {
System.out.println("未找到相匹配的邮编地址！");
}
if (StringUtils.isEmpty(postCode)) {
postCode = "000000";
}
return postCode;
}