IPUtils工具类

清疚 2022-03-31 15:24 144阅读 0赞

详见如下代码：

package com.itstyle.seckill.common.utils;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.util.StringUtils;
    
    import javax.servlet.http.HttpServletRequest;
    
    /****
     * 
    * Project Name:spring-boot-seckill
    * <p>从http请求中获取ip地址<br> 
    *
    * @ClassName: IPUtils
    * @date 2019年1月3日  下午6:30:02
    *
    * @author youqiang.xiong
    * @version 1.0
    * @since  
    * @see
     */
    public class IPUtils {
    
    	private static Logger logger = LoggerFactory.getLogger(IPUtils.class);
    
    	/**
    	 * 获取IP地址
    	 * 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 = null;
    		try {
    			ip = request.getHeader("x-forwarded-for");
    			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) {
    			logger.error("IPUtils ERROR ", e);
    		}
    		// 使用代理，则获取第一个IP地址
    		if (StringUtils.isEmpty(ip) && ip.length() > 15) {
    			if (ip.indexOf(",") > 0) {
    				ip = ip.substring(0, ip.indexOf(","));
    			}
    		}
    		return ip;
    	}
    }