Java如何获取请求的ip 地址？

大大怪~将军

已于 2023-03-29 15:53:39 修改

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分类专栏： Java 文章标签： java tcp/ip servlet

于 2023-02-08 10:22:13 首次发布

本文链接：https://blog.youkuaiyun.com/XikYu/article/details/128930916

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这段Java代码演示了一个控制器方法，用于从HttpServletRequest中获取客户端IP地址。它检查了多个HTTP头字段，包括x-forwarded-for，Proxy-Client-IP，WL-Proxy-Client-IP，HTTP_CLIENT_IP，HTTP_X_FORWARDED_FOR，如果这些都不存在或为空，则返回getRemoteAddr的值。

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1：来上代码

@AnnotationForTest()
@RestController
@RequestMapping("/test")
public class TestController {
    @GetMapping("/test")
    public Result type(HttpServletRequest request){
        String ipAddress = getIpAddress(request);
        return new Result(ResultCode.SUCCESS,ipAddress);
    }
    public static String getIpAddress(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.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }

}