百度GPSutil

package com.qcar.benz.biz.common;

import com.alibaba.citrus.util.StringUtil;
import com.alibaba.fastjson.JSON;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import org.springframework.util.CollectionUtils;

import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;

/**
* 地图查询相关工具类
*/
public class GPSUtil {

private final static String url = "http://api.map.baidu.com/geocoder/v2/";

private final static String ak = "1b7NAfBZKaHuGnRgtD6wfloL";
private final static String sk = "zsHUBnMvE4KHzSEuYrXV1Hb46HtuCTXq";

/**
* 根据经纬度只获取所在省份
*
* @param location 【字符串类型,格式:"经度,纬度"】
* @return
*/
public static String getProvinceByGps(String location) {
String province = "";
Map map = getDetail(location);
if (!CollectionUtils.isEmpty(map)) {
if (!CollectionUtils.isEmpty((Map) map.get("addressComponent"))) {
Map am = (Map) map.get("addressComponent");
if (!CollectionUtils.isEmpty(am)) {
province = (String) am.get("province");
}
}
}
return province;

}

/**
* 根据经纬度得到详细信息
*
* @param location 【字符串类型,格式:"经度,纬度"】
* @return
*/
public static Map getDetail(String location) {
if (StringUtil.isBlank(location)) {
return null;
}
String[] arr = location.split(",");
if (arr.length != 2) {
return null;
}
Map map = new HashMap();
HttpClient client = new HttpClient();
try {
String wholeUrl = new String(url + "?ak=" + ak + "&location=" + arr[1] + "," + arr[0] + "&output=json");
GetMethod get = new GetMethod(wholeUrl);
if (client.executeMethod(get) == HttpServletResponse.SC_OK) {
String str = new String(get.getResponseBody(), "UTF-8");
Map m = (Map) JSON.parse(str);
map = (Map) m.get("result");
}
} catch (Exception e) {
e.printStackTrace();
}
return map;
}

/**
* 转换经纬度顺序
* @return
*/
public static String reverseLocation(Map map) {
if (null == map) {
return "";
}
Map location = (Map) map.get("location");
return location.get("lng").toString() + "," + location.get("lat").toString();
}

/**
* 根据具体地址获取经纬度，
*
* @param address
* @return
*/
public static Map getLocation(String address) {
if (StringUtil.isBlank(address)) {
return null;
}
Map map = new HashMap();
try {
Map paramsMap = new LinkedHashMap<String, String>();
paramsMap.put("address", address);
paramsMap.put("output", "json");
paramsMap.put("ak", GPSUtil.ak);
// 调用下面的toQueryString方法，对LinkedHashMap内所有value作utf8编码，拼接返回结果address=%E7%99%BE%E5%BA%A6%E5%A4%A7%E5%8E%A6&output=json&ak=yourak
String paramsStr = toQueryString(paramsMap);

// 对paramsStr前面拼接上/geocoder/v2/?，后面直接拼接yoursk得到/geocoder/v2/?address=%E7%99%BE%E5%BA%A6%E5%A4%A7%E5%8E%A6&output=json&ak=yourakyoursk
String wholeStr = new String(url + "?" + paramsStr);

HttpClient client = new HttpClient();
GetMethod get = new GetMethod(wholeStr);
if (client.executeMethod(get) == HttpServletResponse.SC_OK) {
String str = new String(get.getResponseBody(), "UTF-8");
Map m = (Map) JSON.parse(str);
map = (Map) m.get("result");
}
} catch (Exception e) {
e.printStackTrace();
}
return map;
}

/**
* 对Map内所有value作utf8编码，拼接返回结果
*
* @param data
* @return
* @throws java.io.UnsupportedEncodingException
*/
public static String toQueryString(Map<?, ?> data)
throws UnsupportedEncodingException {
StringBuffer queryString = new StringBuffer();
for (Entry<?, ?> pair : data.entrySet()) {
queryString.append(pair.getKey() + "=");
queryString.append(URLEncoder.encode((String) pair.getValue(),
"UTF-8") + "&");
}
if (queryString.length() > 0) {
queryString.deleteCharAt(queryString.length() - 1);
}
return queryString.toString();
}

/**
* 来自stackoverflow的MD5计算方法，调用了MessageDigest库函数，并把byte数组结果转换成16进制
*
* @param md5
* @return
*/
public String MD5(String md5) {
try {
java.security.MessageDigest md = java.security.MessageDigest
.getInstance("MD5");
byte[] array = md.digest(md5.getBytes());
StringBuffer sb = new StringBuffer();
for (int i = 0; i < array.length; ++i) {
sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100)
.substring(1, 3));
}
return sb.toString();
} catch (NoSuchAlgorithmException e) {
}
return null;
}

public static void main(String[] args) {
//根据位置获取经纬度
System.out.println("location-新加坡:" + GPSUtil.getLocation("新加坡"));
System.out.println("省份-新加坡:" + getProvinceByGps("105.96171430209,26.258323531902"));

System.out.println("location-贵州:" + GPSUtil.getLocation("贵州"));
System.out.println("省份-贵州:" + getProvinceByGps("106.7349961033,26.902825927797"));

System.out.println("location-日本:" + GPSUtil.getLocation("日本"));
System.out.println("省份-日本:" + getProvinceByGps("99.778748988728,32.798321975722"));
//＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝以下为根据逆地理信息获取＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
//根据经纬度获取国家、省、市、街道等详细信息
// System.out.println("gps:" + GPSUtil.getDetail("120.15759598139,30.252902354484"));

//根据经纬度只获取省份
System.out.println("location-内蒙古自治区:" + GPSUtil.getLocation("内蒙古自治区"));
System.out.println("省份:" + getProvinceByGps(reverseLocation(GPSUtil.getLocation("内蒙古自治区"))));

System.out.println("location-新疆维吾尔自治区:" + GPSUtil.getLocation("新疆维吾尔自治区"));
System.out.println("省份:" + getProvinceByGps(reverseLocation(GPSUtil.getLocation("新疆维吾尔自治区"))));

System.out.println("location-广西壮族自治区:" + GPSUtil.getLocation("广西壮族自治区"));
System.out.println("省份:" + getProvinceByGps(reverseLocation(GPSUtil.getLocation("广西壮族自治区"))));

System.out.println("location-西藏自治区:" + GPSUtil.getLocation("西藏自治区"));
System.out.println("省份:" + getProvinceByGps(reverseLocation(GPSUtil.getLocation("西藏自治区"))));

System.out.println("location-台湾省:" + GPSUtil.getLocation("高雄"));
System.out.println("省份:" + getProvinceByGps(reverseLocation(GPSUtil.getLocation("高雄"))));
}

}