springboot 获取请求的ip地址

你可以通过以下代码来获取Spring Boot中的请求IP地址：

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

public String getIpAddress() {
    HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.currentRequestAttributes()).getRequest();
    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;
}

这个方法会先从请求头中获取 `X-Forwarded-For` 字段，如果不存在，则从 `Proxy-Client-IP` 或 `WL-Proxy-Client-IP` 字段获取，最后再从 `request.getRemoteAddr()` 获取。