根据用户IP，调用公共接口，解析出用户的登录地点

1.根据用户IP,解析出用户的登录地点

webIp="124.65.155.6";
String address = getAddresses("ip="+webIp, "utf-8");

if("0".equals(address)){
address = "北京";
}

2.getAddresses

/**
* 根据Ip地址和编码规则，获取该Ip所属的省市
* @param content
* @param encodingString
* @return
* @throws UnsupportedEncodingException
*/
public String getAddresses(String content, String encodingString){
try{
// 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 = this.getResult(urlStr, content, encodingString);
if (returnStr != null) {
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 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;
}
}
if(region !=null && !"".equals(region)){
return region;
}else{
return country;
}
}
}catch(Exception e) {
_logger.error("获取外网IP的地理地址失败");
return "/common/infoPromptPage";
}
return null;
}

3.decodeUnicode

/**
* 将地理位置转换成中文
* @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();
}

4.getResult

/**
* 根据Ip地址，从指定的网址获取到省市区的信息
* @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(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 (Exception e) {
_logger.error("从指定网站获取IP所属的地理位置信息失败");
}finally {
if (connection != null) {
connection.disconnect();// 关闭连接
}
}
return null;
}