Java-IPDeal工具类

/**
 * IP处理类
 */
import java.sql.*;

public class IPDeal {
    /**
     * 通过ip地址查询地区名称
     * @param strip
     * @return ip所在地区名称
     */
    public static String getArea(String strip){
        Connection conn = null;
        PreparedStatement pstmt = null;
        String sql;
        String strRtn = null;
        try{
            MyJdbc myjdbc = new MyJdbc();
            conn = myjdbc.getConn();
            sql = "select * from fullip where startip<='" + strip + "' and endip>='" + strip + "'";
            pstmt = conn.prepareStatement(sql);
            ResultSet rs = pstmt.executeQuery();
            if(rs.next()){
                strRtn = rs.getString("country");
            }else{
                strRtn = "未确定";
            }
            rs.close();
            rs = null;
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            if (pstmt != null)
                try{
                    pstmt.close();
                    pstmt = null;
                }catch(Exception e){}
            if (conn != null)
                try{
                    conn.close();
                    conn = null;
                }catch(Exception e){}
        }
        return strRtn;
    }
    /**
     * 把ip地址格式化为：000.000.000.000
     * @param ip
     * @return 返回规格ip
     */
    public static String strfullip(String ip){
        StringBuffer buff = new StringBuffer();
        buff.append("");
        String strzero = "000";
        int ilen = 0;
        if(ip != null){
            String[] arrip = ip.split("\.");
            if(arrip.length == 4){
                for(int i = 0; i < 4; i++){
                    if (i==0){
                        ilen = arrip[i].length();
                        if(ilen < 3){
                            buff.append(strzero.substring(0,3-ilen)).append(arrip[i]);
                        }else{
                            buff.append(arrip[i]);
                        }
                    }else{
                        ilen = arrip[i].length();
                        if(ilen < 3){
                            buff.append(".").append(strzero.substring(0,3-ilen)).append(arrip[i]);
                        }else{
                            buff.append(".").append(arrip[i]);
                        }
                    }
                }
            }
        }
        return buff.toString();
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
        String strip = "202.108.33.32";
        System.out.println(IPDeal.strfullip(strip));
        System.out.println(System.currentTimeMillis());
        System.out.println("ip" + strip + "所在地区：" + IPDeal.getArea(IPDeal.strfullip(strip)));
        System.out.println(System.currentTimeMillis());
    }

}