JAVA獲取主機IP地址

java 獲取主機IP地址工具類

import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

public class GetHostIPUtil {
	
	public String getIpAdress(HttpServletRequest request) {
		//針對IP是否使用代理訪問進行處理
		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.getHeader("HTTP_CLIENT_IP"); 
		} 
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
			ip = request.getHeader("HTTP_X_FORWARDED_FOR"); 
		} 
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
			ip = request.getRemoteAddr(); 
		} 
		return ip;
	}
	
	
	public String getIpAdress() {
		RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
    	ServletRequestAttributes sra = (ServletRequestAttributes) requestAttributes;
    	HttpServletRequest request = sra.getRequest();
		//針對IP是否使用代理訪問進行處理
		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.getHeader("HTTP_CLIENT_IP"); 
		} 
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
			ip = request.getHeader("HTTP_X_FORWARDED_FOR"); 
		} 
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
			ip = request.getRemoteAddr(); 
		} 
		return ip;
	}	
}