/**
* <通用功能辅助类>
*/
public class CommonHelper {
/**
* <从request对象中获取用户IP地址>
* @param request
* @return IP地址
*/
public static String getIp(HttpServletRequest request) {
String forwards = request.getHeader("x-forwarded-for");
if (StringUtils.isBlank(forwards) || "unknown".equalsIgnoreCase(forwards)) {
forwards = request.getHeader("Proxy-Client-IP");
}
if (StringUtils.isBlank(forwards) || "unknown".equalsIgnoreCase(forwards)) {
forwards = request.getHeader("WL-Proxy-Client-IP");
}
if (StringUtils.isBlank(forwards) || "unknown".equalsIgnoreCase(forwards)) {
forwards = request.getRemoteAddr();
}
if (StringUtils.isBlank(forwards) || "unknown".equalsIgnoreCase(forwards)) {
forwards = request.getHeader("X-Real-IP");
}
if (forwards != null && forwards.trim().length() > 0) {
int index = forwards.indexOf(',');
return (index != -1) ? forwards.substring(0, index) : forwards;
}
return forwards;
}
/** This class should not be instantiated. */
private CommonHelper() {
}
}