Java 获取请求客户端的IP地址

import java.net.UnknownHostException;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.xml.ws.WebServiceContext;import javax.xml.ws.handler.MessageContext;@Resourceprivate WebServiceContext wsContext;  /*** 获取请求来的ips * @param request* @return*/public String getIpAddr() {String ipAddress = null;MessageContext mc = wsContext.getMessageContext();HttpServletRequest request = (HttpServletRequest) (mc.get(mc.SERVLET_REQUEST));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();//这里主要是获取本机的ip,可有可无if (ipAddress.equals("127.0.0.1")|| ipAddress.endsWith("0:0:0:0:0:0:1")) {// 根据网卡取本机配置的IPInetAddress 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()// = 15if (ipAddress.indexOf(",") > 0) {ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));}} //或者这样也行,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  //return ipAddress!=null&&!"".equals(ipAddress)?ipAddress.split(",")[0]:null;       return ipAddress;}