本文主要讲述，如何使用 Java 代码获取用户远程访问所使用的 IP。
此方法需引进 commons-lang3-3.3.2.jar
package webtest; import javax.servlet.http.HttpServletRequest; import org.apache.commons.lang3.StringUtils; public class GetIP { /** * 获得用户远程地址 */ public static String getRemoteAddr(HttpServletRequest request){ String remoteAddr = request.getHeader("X-Real-IP"); if (StringUtils.isNotBlank(remoteAddr)) { remoteAddr = request.getHeader("X-Forwarded-For"); }else if (StringUtils.isNotBlank(remoteAddr)) { remoteAddr = request.getHeader("Proxy-Client-IP"); }else if (StringUtils.isNotBlank(remoteAddr)) { remoteAddr = request.getHeader("WL-Proxy-Client-IP"); } return remoteAddr != null ? remoteAddr : request.getRemoteAddr(); } }