根据ip地址查询地理位置
package com.jmsht.util;import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import org.json.JSONObject; /** * 根据IP地址获取地理位置 * @author Administrator * */public class AddressUtils { /** * @param args */ public static void main(String[] args) { AddressUtils addressUtils = new AddressUtils(); String ip = "183.16.7.126"; String address = ""; try { address = addressUtils.getAddress("ip="+ip, "utf-8"); } catch (Exception e) { e.printStackTrace(); } System.out.println(address); } /** * 获取地址 * @param params * @param encoding * @return * @throws Exception */ public static String getAddress(String params, String encoding) throws Exception{ String path = "http://ip.taobao.com/service/getIpInfo.php"; String returnStr = getRs(path, params, encoding); JSONObject json=null; if(returnStr != null){ json = new JSONObject(returnStr); if("0".equals(json.get("code").toString())){ StringBuffer buffer = new StringBuffer(); // buffer.append(decodeUnicode(json.optJSONObject("data").getString("country")));//国家 // buffer.append(decodeUnicode(json.optJSONObject("data").getString("area")));//地区 buffer.append(decodeUnicode(json.optJSONObject("data").getString("region")));//省份 buffer.append(decodeUnicode(json.optJSONObject("data").getString("city")));//市区 // buffer.append(decodeUnicode(json.optJSONObject("data").getString("county")));//地区 // buffer.append(decodeUnicode(json.optJSONObject("data").getString("isp")));//ISP公司 System.out.println(buffer.toString()); return buffer.toString(); }else{ return "获取地址失败"; } } return null; } /** * 从url获取结果 * @param path * @param params * @param encoding * @return */ public static String getRs(String path, String params, String encoding){ URL url = null; HttpURLConnection connection = null; try { url = new URL(path); 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.setDoInput(true);// 是否打开输出流? true|false connection.setDoOutput(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()); out.writeBytes(params); out.flush(); out.close(); BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(),encoding)); StringBuffer buffer = new StringBuffer(); String line = ""; while ((line = reader.readLine())!= null) { buffer.append(line); } reader.close(); return buffer.toString(); } catch (Exception e) { e.printStackTrace(); }finally{ connection.disconnect();// 关闭连接 } return null; } /** * 字符转码 * @param theString * @return */ public static String decodeUnicode(String theString){ char aChar; int len = theString.length(); StringBuffer buffer = new StringBuffer(len); for (int i = 0; i < len;) { aChar = theString.charAt(i++); if(aChar == '\\'){ aChar = theString.charAt(i++); if(aChar == 'u'){ int val = 0; for(int j = 0; j < 4; j++){ aChar = theString.charAt(i++); switch (aChar) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': val = (val << 4) + aChar - '0'; break; case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': val = (val << 4) + 10 + aChar - 'a'; break; case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': val = (val << 4) + 10 + aChar - 'A'; break; default: throw new IllegalArgumentException( "Malformed encoding."); } } buffer.append((char) val); }else{ if(aChar == 't'){ aChar = '\t'; } if(aChar == 'r'){ aChar = '\r'; } if(aChar == 'n'){ aChar = '\n'; } if(aChar == 'f'){ aChar = '\f'; } buffer.append(aChar); } }else{ buffer.append(aChar); } } return buffer.toString(); } } 服务器获取ip
/* 获取客户端IP地址*/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(); } /*通过客户端IP获得客户端的城市地址*/String city = GetUserAddress.getAddresses("ip="+ip, "utf-8");request.getSession().setAttribute("city", city);