IP工具类——IpAddress.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
*      也可通过 http://whois.pconline.com.cn/ 获取地址信息
*
* 作者: zhoubang
* 日期：2015年8月7日 上午10:25:00
*/
public class IpAddress {

/**
* 获取IP所在地址
*
* 作者: zhoubang
* 日期：2015年8月7日 上午10:26:57
* @param content
* @param encodingString
* @return
* @throws UnsupportedEncodingException
*/
public String getAddresses(String content, String encodingString)
throws UnsupportedEncodingException {
// 淘宝的接口
String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
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;
}

/**
* 请求接口
*
* 作者: zhoubang
* 日期：2015年8月7日 上午10:27:45
* @param urlStr
* @param content
* @param encoding
* @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(10000);// 设置连接超时时间，单位毫秒
connection.setReadTimeout(10000);// 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));
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) {
IpAddress addressUtils = new IpAddress();
String ip = "27.54.227.84";
String address = "";
try {
address = addressUtils.getAddresses("ip=" + ip, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
System.out.println(address);
// 输出结果为：中国=华东=安徽省=滁州市==
// 安徽省
}
}