根据ip地址查询地址信息

用的是http://ip.taobao.com/service/getIpInfo.php接口。
这个也是网上找的，但是我已经修改测试过了，是可用的，在这里先感谢原作者。

package com.rookie.mapper;import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;/*** 根据IP地址获取详细的地域信息*/
public class Test {/*** * @param content  请求的参数 格式为：name=xxx&pwd=xxx** @param encodingString 服务器端请求编码。如GBK,UTF-8等* @return* @throws UnsupportedEncodingException*/public String getAddresses(String content, String encodingString) throws UnsupportedEncodingException {// 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 = this.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;}/*** @param urlStr   请求的地址* @param content  请求的参数 格式为：name=xxx&pwd=xxx* @param encoding 服务器端请求编码。如GBK,UTF-8等* @return*/private 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|falseconnection.setDoInput(true);// 是否打开输入流true|falseconnection.setRequestMethod("POST");// 提交方法POST|GETconnection.setUseCaches(false);// 是否缓存true|falseconnection.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=xxxout.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** @param theString* @return**/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();}// 测试public static void main(String[] args) {Test addressUtils = new Test();// 测试ip 219.136.134.157 中国=华南=广东省=广州市=越秀区=电信    122.49.20.247--北京String ip = "219.136.134.157";String address = "";try {address = addressUtils.getAddresses("ip=" + ip, "utf-8");} catch (UnsupportedEncodingException e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println(address);   // 输出结果为：广东省}
}

今天看了之后发现上面的代码似乎有些多余，对于一些情况不用写的那么复杂，下面这个相当于简化版（即没有编码处理），仅做参考：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;/*** Created by czy on 2018/11/23.* 地址相关*/
public class AddressUtil {/*** @param ipAddr ip地址* @return 位置信息*/public static Map<String, Object> getAddressByIP(String ipAddr) {String requestURL = "http://ip.taobao.com/service/getIpInfo.php?ip=" + ipAddr;//从 http://whois.pconline.com.cn 取得IP所在的省市区信息URL url = null;HttpURLConnection connection = null;BufferedReader reader = null;try {url = new URL(requestURL);connection = (HttpURLConnection) url.openConnection();connection.setConnectTimeout(2000);connection.setReadTimeout(2000);connection.connect();reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));String lines;StringBuilder sb = new StringBuilder();while ((lines = reader.readLine()) != null) {sb.append(lines);}reader.close();Map<String, Object> result = FormatUtil.parseJSON2Map(sb.toString());return result;} catch (MalformedURLException ex) {ex.printStackTrace();return null;} catch (IOException ex) {ex.printStackTrace();return null;} finally {connection.disconnect();}}public static void main(String[] args) {Map<String, Object> addressByIP = getAddressByIP("43.224.80.0");if (addressByIP == null) {System.out.println("根据IP获取地址出错");return;}System.out.println(addressByIP.toString());Map<String, Object> data = (Map<String, Object>) addressByIP.get("data");System.out.println(data.toString());String area = String.valueOf(data.get("area"));//区域-华南华北等String area_id = String.valueOf(data.get("area_id"));String city = String.valueOf(data.get("city"));//城市String city_id = String.valueOf(data.get("city_id"));String country = String.valueOf(data.get("country"));//国家String country_id = String.valueOf(data.get("country_id"));String county = String.valueOf(data.get("county"));//县String county_id = String.valueOf(data.get("county_id"));String isp = String.valueOf(data.get("isp"));//运营商String isp_id = String.valueOf(data.get("isp_id"));String region = String.valueOf(data.get("region"));//省份String region_id = String.valueOf(data.get("region_id"));System.out.println(area + "--" + country + "--" + region + "--" + city + "--" + county + "--" + isp);}
}

下面是简化版对应的返回结果：

{code=0, data={"area":"","area_id":"","city":"合肥","city_id":"340100","country":"中国","country_id":"CN","county":"XX","county_id":"xx","ip":"43.224.80.0","isp":"联通","isp_id":"100026","region":"安徽","region_id":"340000"}}
{"area":"","area_id":"","city":"合肥","city_id":"340100","country":"中国","country_id":"CN","county":"XX","county_id":"xx","ip":"43.224.80.0","isp":"联通","isp_id":"100026","region":"安徽","region_id":"340000"}
--中国--安徽--合肥--XX--联通

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