java获取客户端的IP地址工具类
import java.net.InetAddress; import java.net.UnknownHostException; import javax.servlet.http.HttpServletRequest; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; public class IpUtil { public static String getIpAddr() { ServletRequestAttributes attrs = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); HttpServletRequest request = (HttpServletRequest) attrs.getRequest(); String ipAddress = null; try { 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(); if (ipAddress.equals("127.0.0.1")) { // 根据网卡取本机配置的IP InetAddress inet = null; try { inet = InetAddress.getLocalHost(); } catch (UnknownHostException e) { e.printStackTrace(); } ipAddress = inet.getHostAddress(); } } // 对于通过多个代理的情况,第一个IP为客户端真实IP,多个IP按照,分割 if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length() // = 15 if (ipAddress.indexOf(",") > 0) { ipAddress = ipAddress.substring(0, ipAddress.indexOf(",")); } } } catch (Exception e) { ipAddress = ""; } // ipAddress = this.getRequest().getRemoteAddr(); return ipAddress; } }
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