最近项目某个功能需要根据ip地址从第三方接口获取详细的地理位置，从网上找了很多例子，主要接口有新浪的，淘宝的，腾讯的。试了淘宝的，如果是数量级小的还可以，如果数量级达到上十万级就速度慢了，会导致系统崩溃。下面例子是新浪的，例子不是适合每个项目，需要改一下.

/** ipSearchUrl=http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=（这是新浪的接口地址） 在项目中新浪的接口地址没有直接写死，而是去读属性文件。*/ public static String getIpInfoBySina(String ip){ // 读取属性文件(属性文件key-value和格式) final String PROP_IPSEARCHURL="ipSearchUrl"; final String RET_SUCCESS="1"; final String RET="ret"; final String PROVINCE="province"; final String CITY="city"; final String DISTRICT="district"; final String ISP="isp"; String ipAddress=""; if(StringUtils.isBlank(ip)){ return null; } String url = SystemParamPropertyUtils.getSystemParamKeyValue(PROP_IPSEARCHURL);//这个是从属性文件中获取url，即新浪接口地址 if(StringUtils.isNotBlank(url)){ String path=url+ip;//"http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip="+ip; HttpClient httpClient = new HttpClient(); Map<String, String> paramMap = new HashMap<String, String>(); String remoteIpInfo=""; try { remoteIpInfo = HttpClientUtil.request(httpClient, path, paramMap,"sina"); } catch (Exception e) { e.printStackTrace(); } if(StringUtils.isNotBlank(remoteIpInfo)){ String _ret=searchValue(remoteIpInfo, RET); if(RET_SUCCESS.equals(_ret)){ String provinceName=searchValue(remoteIpInfo, PROVINCE); String cityName=searchValue(remoteIpInfo, CITY); String district=searchValue(remoteIpInfo, DISTRICT); String isp=searchValue(remoteIpInfo, ISP); ipAddress=provinceName+cityName+district+isp; } } } return ipAddress; } private static String searchValue(String remoteIpInfo,String key){ String _value=""; if(StringUtils.isNotBlank(remoteIpInfo)){ _value=StringUtils.substringBetween(remoteIpInfo,"\""+key+"\":", ","); if(StringUtils.isNotBlank(_value)){ _value=UnicodeUtils.decodeUnicode(_value); } } return _value; }

读新浪的接口地址很快，我本人测试到了九万条左右，十分钟。淘宝的话一个多小时，五万多条。还有一个小技巧，就是把读到的ip存到map中，然后下次读的话就直接从map取出，这样快很多。这个会衍生出很多问题，当日志文件达到百万级，千万级，怎么解决。类似淘宝这样的，一秒多少订单，每个订单ip不一样。我不知道怎么解决。有大神知道回我一下。
下面是用淘宝的。

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 * @author Lwl* @dateJan 26, 2016 */public class AddressUtils { /** * * @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 * @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 new StringBuffer(country).append(area).append(region).append(city).append(county).append(isp).toString(); } 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(33000);// 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 * * @author fanhui 2007-3-15 * @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) { AddressUtils addressUtils = new AddressUtils(); // 测试ip 219.136.134.157 中国=华南=广东省=广州市=越秀区=电信 String ip = "125.70.11.136"; String address = ""; try { address = addressUtils.getAddresses("ip="+ip, "utf-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println(address); // 输出结果为：广东省,广州市,越秀区 } }