Spring Boot 取接口请求IP

首先我们要取得 HttpServletRequest (HttpServletResponse同理)

方式一：通过静态方法获取，也可以封装一个静态方法出来

public class HttpContextUtils
{
    public static HttpServletRequest getHttpServletRequest()
    {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }
}

方式二：通过参数直接获取，只要在你的方法上加上参数，SpringBoot 就会帮你绑定，你可以直接使用。如果你的方法有其他参数，把 request 参数加到后面即可

@GetMapping("/one")
public void methodOne(@RequestParam String name, HttpServletRequest request) { }

方式三：注入到类，这样就不用每个方法都写了

private final HttpServletRequest request;

public TestController(HttpServletRequest request)
{
this.request = request;
}

@Log("执行方法一")
@GetMapping("/one")
public void methodOne(@RequestParam String name) { }

拿到 HttpServletRequest 后即可取得请求的 IP 地址

public class IPUtils
{
    /**
     * 获取IP地址
     * <p>
     * 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址
     * 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址
     */
    public static String getIpAddr(HttpServletRequest request)
    {

        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.getRemoteAddr();
        }
        return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip;
    }
}