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获取请求的 ip 地址
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import java.net.InetAddress; | |
import java.net.UnknownHostException; | |
import javax.servlet.http.HttpServletRequest; | |
public class IpUtils { | |
public static String getIpAddr(HttpServletRequest request) { | |
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=""; | |
} | |
return ipAddress; | |
} | |
} |
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