springboot如何获取请求方ip地址

Spring Boot可以通过HttpServletRequest对象获取请求方IP地址，代码如下：

@Autowired
private HttpServletRequest request;

public String getClientIP() {
    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-Proxy-Client-IP");
    }
    if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
        ipAddress = request.getRemoteAddr();
    }
    return ipAddress;
}

此方法通过检查一系列HTTP头来获取请求方的IP地址，包括x-forwarded-for、Proxy-Client-IP和WL-Proxy-Client-IP等。如果这些头都不存在或者值为unknown，则使用request.getRemoteAddr()获取IP地址。