Java-获取当前IP归属地

知道IP,获取当前IP归属地的Java程序：

package Main;

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;

import ExtendElements.ExtendTest;
import ExtendElements.subElements;

public class MainTest {
    public static void main(String[] args) {
        // 测试ip 10.0.0.7 内网
        String ip = "10.0.0.7";
        String address = "";
        try {
            address = getAddresses("ip=" + ip, "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        System.out.println(address);
    }

    /**
     * 3 * @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 = getResult(urlStr, content, encodingString);
        if (returnStr != null) {
            // 处理返回的省市区信息
            System.out.println("IP=====" + 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
            System.out.println("region = " + region);

            String country = "";
            String area = "";
            // String region = "";
            String city = "";
            String county = "";
            String isp = "";
            System.out.println("temp的长度=" + temp.length);
            for (int i = 0; i < temp.length; i++) {
                switch (i) {
                // 如果使用的是新浪的接口，那这里的需要修改，case:3 4 5分别对应国家，省，市区
                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 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();
    }
}

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