項目中，有這麼一個需求，要把用戶操作操作信息做成日誌。現在要獲取用戶的登錄IP地址。並轉爲實際地址。現在給出源碼。
第一步獲取用戶登錄IP
// 獲取外網真實 IP 地址
public static String getV4IP(HttpServletRequest request){
String ip = "";
String chinaz = "http://ip.chinaz.com";
StringBuilder inputLine = new StringBuilder();
String read = "";
URL url = null;
HttpURLConnection urlConnection = null;
BufferedReader in = null;
try {
url = new URL(chinaz);
urlConnection = (HttpURLConnection) url.openConnection();
in = new BufferedReader( new InputStreamReader(urlConnection.getInputStream(),"UTF-8"));
while((read=in.readLine())!=null){
inputLine.append(read+"\r\n");
}
//System.out.println(inputLine.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(in!=null){
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Pattern p = Pattern.compile("\\<dd class\\=\"fz24\">(.*?)\\<\\/dd>");
Matcher m = p.matcher(inputLine.toString());
if(m.find()){
String ipstr = m.group(1);
ip = ipstr;
//System.out.println(ipstr);
}
return ip;
}將獲取的IP 轉換爲IP地址：
package com.whf.test;
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;
/**
* 根據IP地址獲取詳細的地域信息
* @project:personGocheck
* @class:AddressUtils.java
* @author:heguanhua E-mail:[email protected]
* @date：Nov 14, 2012 6:38:25 PM
*/
public class AddressUtils {
/**
*
* @param content
* 請求的參數 格式爲：name=xxx&pwd=xxx
* @param encoding
* 服務器端請求編碼。如GBK,UTF-8等
* @return
* @throws UnsupportedEncodingException
*/
public String getAddresses(String content, String encodingString)
throws UnsupportedEncodingException {
// 這裏調用pconline的接口
String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
// 從http://whois.pconline.com.cn取得IP所在的省市區信息
String returnStr = this.getResult(urlStr, content, encodingString);
if (returnStr != null) {
// 處理返回的省市區信息
System.out.println(returnStr);
String[] temp = returnStr.split(",");
if(temp.length<3){
return "0";//無效IP，局域網測試
}
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);// 國家
break;
case 3:
area = (temp[i].split(":"))[1].replaceAll("\"", "");
area = decodeUnicode(area);// 地區
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);// 市區
break;
case 9:
county = (temp[i].split(":"))[1].replaceAll("\"", "");
county = decodeUnicode(county);// 地區
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 country+area+","+region+city+county+isp;
}
return null;
}
/**
* @param urlStr
* 請求的地址
* @param content
* 請求的參數 格式爲：name=xxx&pwd=xxx
* @param encoding
* 服務器端請求編碼。如GBK,UTF-8等
* @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();// 新建連接實例
connection.setConnectTimeout(2000);// 設置連接超時時間，單位毫秒
connection.setReadTimeout(2000);// 設置讀取數據超時時間，單位毫秒
connection.setDoOutput(true);// 是否打開輸出流 true|false
connection.setDoInput(true);// 是否打開輸入流true|false
connection.setRequestMethod("POST");// 提交方法POST|GET
connection.setUseCaches(false);// 是否緩存true|false
connection.connect();// 打開連接端口
DataOutputStream out = new DataOutputStream(connection
.getOutputStream());// 打開輸出流往對端服務器寫數據
out.writeBytes(content);// 寫數據,也就是提交你的表單 name=xxx&pwd=xxx
out.flush();// 刷新
out.close();// 關閉輸出流
BufferedReader reader = new BufferedReader(new InputStreamReader(
connection.getInputStream(), encoding));// 往對端寫完數據對端服務器返回數據
// ,以BufferedReader流來讀取
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();// 關閉連接
}
}
return null;
}
/**
* unicode 轉換成 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();
}
// 測試
public static void main(String[] args) {
AddressUtils addressUtils = new AddressUtils();
// 測試ip 60.190.225.34 中國華東,浙江省杭州市電信
String ip = "60.190.225.34";
String address = "";
try {
address = addressUtils.getAddresses("ip="+ip, "utf-8");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(address);
// 中國華東,浙江省杭州市電信
}
}把獲取到的IP轉爲實際地址：
