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java获取客户端真实ip

通过request获取客户端请求的真实ip。

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/**
* @Description: 获取真实ip地址
* @author: fallsea
* @date: 2017年10月22日 下午9:26:27
* @param request
* @return
*/
public static String getIpAddr(HttpServletRequest request)
{
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.getRemoteAddr();
}
return ip;
}
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