为什么获取不了访问者的真实IP

做过获取用户IP 然后通过阿里的API获取地址位置的 demo 明早给你找一下

Java代码获取X-Forwarded-For

/**
* 获取ip地址,防止集群、代理
* @param request  
* @return ip
*/  
public static String getAddr(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;  
}  

我也是这个问题；