Java后台获取IP信息

转载：http://blog.csdn.net/Cryhelyxx/article/details/40862101

经过测试简单测试发现：
1、4G网手机IP获取地址信息不准确
2、电脑连VPN获取IP后获取地址信息不准确，获取的信息为VPN所配置地址的信息

第三方API

ps:下面参数ip: 218.192.3.42 用于测试
淘宝API：http://ip.taobao.com/service/getIpInfo.php?ip=218.192.3.42
新浪API：http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=218.192.3.42
pconline API：http://whois.pconline.com.cn/
百度API：http://api.map.baidu.com/location/ip?ip=218.192.3.42
2. 工具类

AddressUtils.java
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
淘宝API : http://ip.taobao.com/service/getIpInfo.php?ip=218.192.3.42
新浪API : http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=218.192.3.42
@File AddressUtils.java
@Package org.gditc.weicommunity.util
@Description TODO
@Site https://github.com/Cryhelyxx
@Blog http://blog.csdn.net/Cryhelyxx
@Email [email protected]
@Company GDITC
@Date 2014年11月6日下午1:46:37
@author Cryhelyxx
@version 1.0
/
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 static String getAddresses(String content, String encodingString)
  throws UnsupportedEncodingException {
  // 这里调用淘宝API
  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 = getResult(urlStr, content, encodingString);
  if (returnStr != null) {
  // 处理返回的省市区信息
  System.out.println("(1) unicode转换成中文前的returnStr : " + returnStr);
  returnStr = decodeUnicode(returnStr);
  System.out.println("(2) unicode转换成中文后的returnStr : " + returnStr);
  String[] temp = returnStr.split(",");
  if(temp.length<3){
  return “0”;//无效IP，局域网测试
  }
  return returnStr;
  }
  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 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
- @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 = “122.49.20.247”;
  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
  }
  }

Java后台获取IP信息

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