ssm框架中如何实现获取ip地

在SSM框架中，可以通过Spring MVC的`HttpServletRequest`对象来获取客户端IP地址。具体实现方法如下所示[^1]：

@RequestMapping("/get_ip")
public String getClientIp(HttpServletRequest request) {
    String 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-Client-IP");
    }
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        ipAddress = request.getRemoteAddr();
    }
    return ipAddress;
}

在上述代码中，我们通过获取`HttpServletRequest`对象来获取客户端的IP地址。首先，我们从`x-forwarded-for`中获取IP地址，如果获取不到，则从`Proxy-Client-IP`和`WL-Proxy-Client-IP`中获取。如果仍然获取不到，则使用`getRemoteAddr()`方法获取客户端IP地址。