拿ip 工具类

IpUtils:

完整代码;

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import org.apache.commons.lang3.StringUtils;
import javax.servlet.http.HttpServletRequest;

public class IpUtils {

    public static String getIpAddr(HttpServletRequest request) {
        String unknown = "unknown";
        String ip = null;
        try {
//            ip = request.getHeader("x-forwarded-for");
            ip = request.getHeader("X-Real-IP");
            if (StringUtils.isEmpty(ip) || unknown.equalsIgnoreCase(ip)) {
                ip = request.getHeader("Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ip) || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
                ip = request.getHeader("WL-Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ip) || unknown.equalsIgnoreCase(ip)) {
                ip = request.getHeader("HTTP_CLIENT_IP");
            }
            if (StringUtils.isEmpty(ip) || unknown.equalsIgnoreCase(ip)) {
                ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            }
            if (StringUtils.isEmpty(ip) || unknown.equalsIgnoreCase(ip)) {
                ip = request.getRemoteAddr();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ip;
    }
}