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websocket获取客服端真实ip

news 2025/8/4 6:33:56

在websocket建立连接时,获取访问客户端的真实ip

1. websocket建立连接过程
在这里插入图片描述
2. pom依赖

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-websocket</artifactId>
        </dependency>

3. 添加配置,握手过程中,设置真实客户端ip


import javax.servlet.http.HttpServletRequest;
import javax.websocket.HandshakeResponse;
import javax.websocket.server.HandshakeRequest;
import javax.websocket.server.ServerEndpointConfig;
import java.lang.reflect.Field;

public class WebSocketIpConfigurator extends ServerEndpointConfig.Configurator {
    @Override
    public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
        try {
            // 通过反射获取底层 ServletRequest
            Field requestField = request.getClass().getDeclaredField("request");
            requestField.setAccessible(true);
            HttpServletRequest httpRequest = (HttpServletRequest) requestField.get(request);

            // 解析真实 IP
            String clientIp = IpUtils.getClientIp(httpRequest);
            sec.getUserProperties().put("clientIp", clientIp);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
class IpUtils {
    public static String getClientIp(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }

        // 处理多级代理（取第一个 IP）
        if (ip != null && ip.contains(",")) {
            ip = ip.split(",")[0].trim();
        }
        return ip;
    }
}