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javaweb服务端获取客户端真实IP地址
前面有篇博文讲了获取本机或服务端的IP地址和MAC地址,但是无法获取客户端的真实IP地址。这篇博文我们通过代码来实现获取客户端的真实IP地址。
获取本机或服务端的IP地址和MAC地址博文链接: https://blog.youkuaiyun.com/IT_Most/article/details/109313606
1 工具类IpUtil.java
import javax.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class IpUtil {
private static final String LOOPBACK_ADDRESS = "127.0.0.1";
private static final String IPV6_ADDRESS = "0:0:0:0:0:0:0:1";
/**
* 通过HttpServletRequest返回客户端真实IP地址(通过多级代理后也能获取到真实ip)
*/
public static String getIpAddr(HttpServletRequest request) {
try {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
//如果使用localhost访问,对于windows IPv6会返回0:0:0:0:0:0:0:1,将其转为127.0.0.1
if (IPV6_ADDRESS.equals(ip)) {
ip = LOOPBACK_ADDRESS;
}
return ip;
} catch (Exception e) {
log.error("getIpAddr error! e:", e);
}
return "";
}
}
2 测试代码
@GetMapping("ip")
@ResponseBody
public String mac(HttpServletRequest request) {
String ip = IpUtil.getIpAddr(request);
return "ip:" + ip;
}
3 测试结果
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