JAVA通过ip获取所在地址与经纬度

ip，经纬度，taobao和百度api获取地址的方法

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.URL;
import java.net.URLEncoder;
import java.net.UnknownHostException;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.json.JSONException;
import net.sf.json.JSONObject;
public class GetPosition {
private static final String BAIDU_APP_KEY = "42b8ececa9cd6fe72ae4cddd77c0da5d";
/*
* 获取本地ip
*/
public static String getPublicIP() {
String ip = "";
try {
ip = InetAddress.getLocalHost().getHostAddress();
} catch (UnknownHostException e) {
e.printStackTrace();
}
return ip;
}
/*
* request获取ip
*/
public static String getIpAddr(HttpServletRequest request) {
    String ip = request.getHeader("x-forwarded-for");
    if(ip == null || ip.length() == 0 ||"unknown".equalsIgnoreCase(ip)) {
        ip = request.getHeader("Proxy-Client-IP");
    }
    if(ip == null || ip.length() == 0 ||"unknown".equalsIgnoreCase(ip)) {
        ip = request.getHeader("WL-Proxy-Client-IP");
    }
    if(ip == null || ip.length() == 0 ||"unknown".equalsIgnoreCase(ip)) {
        ip = request.getRemoteAddr();
    }
    return ip;
}

/**
* 返回经纬度坐标的map longitude(经度),latitude(纬度)
*/
public static Map getLatitude(String address) {
try {
address = URLEncoder.encode(address, "UTF-8");
URL resjson = new URL("http://api.map.baidu.com/geocoder?address="
+ address + "&output=json&key=" + BAIDU_APP_KEY);
BufferedReader in = new BufferedReader(new InputStreamReader(
resjson.openStream()));
String res;
StringBuilder sb = new StringBuilder("");
while ((res = in.readLine()) != null) {
sb.append(res.trim());
}
in.close();
String str = sb.toString();
if(str!=null&&!str.equals("")){
Map map = null;
int lngStart = str.indexOf("lng\":");
int lngEnd = str.indexOf(",\"lat");
int latEnd = str.indexOf("},\"precise");
if (lngStart > 0 && lngEnd > 0 && latEnd > 0) {
String longitude = str.substring(lngStart + 5, lngEnd);
String latitude = str.substring(lngEnd + 7, latEnd);
map = new HashMap();
map.put("longitude", longitude);
map.put("latitude", latitude);
return map;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

/*
* 拼接字符串
*/
private static String readAll(Reader rd) throws IOException {
        StringBuilder sb = new StringBuilder();
        int cp;
        while ((cp = rd.read()) != -1) {
            sb.append((char) cp);
        }
        return sb.toString();
    }
/*
* 数据转成json
*/
public static JSONObject readJsonFromUrl(String url) throws IOException,JSONException  {
        InputStream is = new URL(url).openStream();
        try {
            BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
            String jsonText = readAll(rd);
            JSONObject json = JSONObject.fromObject(jsonText);
           // System.out.println(json);
            return json;
        } finally {
            //关闭输入流
            is.close();
        }
    }
/**
* @param urlStr
*   请求的地址
* @param content
*   请求的参数 格式为：ip=ipstr
* @param encoding
*   服务器端请求编码。如UTF-8等
* @return
*/
private static String getResult(String urlStr, String content, String encoding) {
URL url = null;
HttpURLConnection connection = null;
try {
url = new URL(urlStr);
connection = (HttpURLConnection) url.openConnection();// 新建连接实例
connection.setConnectTimeout(2000);// 设置连接超时时间，单位毫秒
connection.setReadTimeout(2000);// 设置读取数据超时时间，单位毫秒
connection.setDoOutput(true);// 是否打开输出流 true|false
connection.setDoInput(true);// 是否打开输入流true|false
connection.setRequestMethod("POST");// 提交方法POST|GET
connection.setUseCaches(false);// 是否缓存true|false
connection.connect();// 打开连接端口
DataOutputStream out = new DataOutputStream(connection
  .getOutputStream());// 打开输出流往对端服务器写数据
out.writeBytes(content);// 写数据,也就是提交你的表单 name=xxx&pwd=xxx
out.flush();// 刷新
out.close();// 关闭输出流
BufferedReader reader = new BufferedReader(new InputStreamReader(
  connection.getInputStream(), encoding));// 往对端写完数据对端服务器返回数据
// ,以BufferedReader流来读取
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
reader.close();
return buffer.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect();// 关闭连接
}
}
return null;
}
/**
* unicode 转换成 中文
*/
public static String decodeUnicode(String theString) {
char aChar;
int len = theString.length();
StringBuffer outBuffer = new StringBuffer(len);
for (int x = 0; x < len;) {
aChar = theString.charAt(x++);
if (aChar == '\\') {
aChar = theString.charAt(x++);
if (aChar == 'u') {
  int value = 0;
  for (int i = 0; i < 4; i++) {
  aChar = theString.charAt(x++);
  switch (aChar) {
  case '0':
  case '1':
  case '2':
  case '3':
  case '4':
  case '5':
  case '6':
  case '7':
  case '8':
  case '9':
  value = (value << 4) + aChar - '0';
  break;
  case 'a':
  case 'b':
  case 'c':
  case 'd':
  case 'e':
  case 'f':
  value = (value << 4) + 10 + aChar - 'a';
  break;
  case 'A':
  case 'B':
  case 'C':
  case 'D':
  case 'E':
  case 'F':
  value = (value << 4) + 10 + aChar - 'A';
  break;
  default:
  throw new IllegalArgumentException(
   "Malformed  encoding.");
  }
  }
  outBuffer.append((char) value);
} else {
  if (aChar == 't') {
  aChar = '\t';
  } else if (aChar == 'r') {
  aChar = '\r';
  } else if (aChar == 'n') {
  aChar = '\n';
  } else if (aChar == 'f') {
  aChar = '\f';
  }
  outBuffer.append(aChar);
}
} else {
outBuffer.append(aChar);
}
}
return outBuffer.toString();
}
/**
*
* @param content
*   请求的参数 格式为：ip=ipstr
* @param encoding
*   服务器端请求编码。如UTF-8等
* @return
* @throws UnsupportedEncodingException
*/
public static String getAddrName(String content, String encodingString) throws IOException{

// 这里调用pconline的接口
String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
// 从http://whois.pconline.com.cn取得IP所在的省市区信息
String returnStr = GetPosition.getResult(urlStr, content, encodingString);
if (returnStr != null) {
// 处理返回的省市区信息
System.out.println(returnStr);
String[] temp = returnStr.split(",");
if(temp.length<3){
return "0";//无效IP，局域网测试
}
String region = (temp[5].split(":"))[1].replaceAll("\"", "");
region = decodeUnicode(region);// 省份

String country = "";
String area = "";
// String region = "";
    String city = "";
String county = "";
String isp = "";
for (int i = 0; i < temp.length; i++) {
switch (i) {
case 1:
country = (temp[i].split(":"))[2].replaceAll("\"", "");
country = decodeUnicode(country);// 国家
break;
    case 3:
area = (temp[i].split(":"))[1].replaceAll("\"", "");
area = decodeUnicode(area);// 地区 
break;
case 5:
region = (temp[i].split(":"))[1].replaceAll("\"", "");
region = decodeUnicode(region);// 省份 
break; 
    case 7:
city = (temp[i].split(":"))[1].replaceAll("\"", "");
city = decodeUnicode(city);// 市区
break; 
    case 9:
county = (temp[i].split(":"))[1].replaceAll("\"", "");
county = decodeUnicode(county);// 地区 
break;
    case 11:
isp = (temp[i].split(":"))[1].replaceAll("\"", "");
isp = decodeUnicode(isp); // ISP公司
break;
        }
}
System.out.println(country+"="+area+"="+region+"="+city+"="+county+"="+isp);
return region;
}
return null;
    }
public static String getAddrByBaiduAPI(String Ip) throws JSONException, IOException {
JSONObject json = GetPosition.readJsonFromUrl("http://api.map.baidu.com/location/ip?ak=F454f8a5efe5e577997931cc01de3974&ip="+Ip);
JSONObject content=((JSONObject) json).getJSONObject("content"); 
    JSONObject addr_detail=((JSONObject) content).getJSONObject("address_detail");
    String city=addr_detail.opt("province").toString()+addr_detail.opt("city").toString()+addr_detail.opt("street").toString();
    return city;
}
}