springboot 获取访公网ip

你可以使用HttpServletRequest对象来获取访问者的IP地址。在Spring Boot中，可以通过注入HttpServletRequest对象来获取IP地址，如下所示：

@Autowired
private HttpServletRequest request;

public String getIpAddress() {
    String ipAddress = request.getHeader("X-Forwarded-For");
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        ipAddress = request.getHeader("Proxy-Client-IP");
    }
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        ipAddress = request.getHeader("WL-Proxy-Client-IP");
    }
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        ipAddress = request.getRemoteAddr();
    }
    return ipAddress;
}

上述方法会首先尝试获取代理服务器传递的IP地址，如果无法获取，则会尝试从其他头部中获取IP地址，最后获取不到时返回请求的远程IP地址。