我可以从 clientIp 获取国家/地区名称吗？

发布于 2024-11-27 10:30:25 字数 312 浏览 0 评论 0 原文

// I get clientIp with below statement.
request.setAttribute("clientIp", clientIp);

// I use below statement to see clientIp on JSP page.
<%=response.encodeURL((String)request.getAttribute("clientIp")) %>

我想知道我还可以显示 clientIP 中的国家/地区名称吗？

例如：10.2.3.4 美国 10.4.5.3 英格兰

原文

// I get clientIp with below statement.
request.setAttribute("clientIp", clientIp);

// I use below statement to see clientIp on JSP page.
<%=response.encodeURL((String)request.getAttribute("clientIp")) %>

I wonder can I also show Country name from clientIP?

Like: 10.2.3.4 U.S.A 10.4.5.3 England

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

我很坚强 2024-12-04 10:30:25

如果您想通过 Java 完成这一切，您需要下载 IP 数据库，这是一个将 IP 映射到国家/地区代码的平面文件。

谷歌一下，你会发现有一些免费的，但它们可能不是完全最新的。

它可能看起来像这样：

"16777216","33554431","AU","AUS","AUSTRALIA"
"50331648","69956103","US","USA","UNITED STATES"
"69956104","69956111","BM","BMU","BERMUDA"
"69956112","72349055","US","USA","UNITED STATES"

下载后，您需要将其加载到数据库中，例如 SQLLite，以便您可以对其执行查找：

public String getCountryCode(String host) throws Exception {
    InetAddress addr = InetAddress.getByName(host);
    Long ipNum = ipToInt(addr.getHostAddress());

    Statement smt = conn.createStatement();
    ResultSet rs = smt.executeQuery("SELECT COUNTRY_CODE3 FROM ip_range WHERE IP_FROM <= "+ipNum+" and IP_TO >= "+ipNum);
    if (rs.next())
        return rs.getString(1);

    return null;
}

或者，还有各种网络服务是免费的，仅限日常使用，可以为您完成繁重的工作，而且可能会更新。

If you want to do it all from Java you'll need to download an IP database, a flat file that maps IP to CountryCode.

Google around and you'll see that there are a few free ones, but they may not be totally up to date.

It will probably look something like this:

"16777216","33554431","AU","AUS","AUSTRALIA"
"50331648","69956103","US","USA","UNITED STATES"
"69956104","69956111","BM","BMU","BERMUDA"
"69956112","72349055","US","USA","UNITED STATES"

Once downloaded you'll want to load it into a database, e.g SQLLite so you can perform lookups on it:

public String getCountryCode(String host) throws Exception {
    InetAddress addr = InetAddress.getByName(host);
    Long ipNum = ipToInt(addr.getHostAddress());

    Statement smt = conn.createStatement();
    ResultSet rs = smt.executeQuery("SELECT COUNTRY_CODE3 FROM ip_range WHERE IP_FROM <= "+ipNum+" and IP_TO >= "+ipNum);
    if (rs.next())
        return rs.getString(1);

    return null;
}

Alternatively there are various web services that are free for limited daily usage that will do the hard-work for you and probably be more up to date.

回复收藏 0 原文

~没有更多了~