HandshakeInterceptor 攔截器攔截 http 協議的請求/響應，不攔截 ws 協議的請求/響應。 <br/> 攔截器使用步驟如下： **1. 實現攔截器接口** ```java public class HttpHandShakeInterceptor implements HandshakeInterceptor { /** * 在獲取請求或響應之前進行攔截，獲取一些請求或響應的數據 * * @param serverHttpRequest * @param serverHttpResponse * @param webSocketHandler * @param map 如果該方法通過，可以在監聽器或controller層拿到這里設置的數據 * @return 返回false則攔截，返回true則通過 * @throws Exception */ @Override public boolean beforeHandshake(ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse, WebSocketHandler webSocketHandler, Map<String, Object> map) throws Exception { if (serverHttpRequest instanceof HttpServletRequest) { HttpServletRequest request = (HttpServletRequest) serverHttpRequest; //... } if (serverHttpResponse instanceof HttpServletResponse) { HttpServletResponse response = (HttpServletResponse) serverHttpResponse; //... } return true; } /** * 在通過請求或響應之后被調用 * * @param serverHttpRequest * @param serverHttpResponse * @param webSocketHandler * @param e */ @Override public void afterHandshake(ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse, WebSocketHandler webSocketHandler, Exception e) { } } ``` **2. 配置類中添加攔截器** ```java @Configuration @EnableWebSocketMessageBroker public class WebSocketConfig implements WebSocketMessageBrokerConfigurer { @Override public void registerStompEndpoints(StompEndpointRegistry registry) { registry.addEndpoint("/endpoint-websocket") .setAllowedOrigins("*") //添加攔截器 .addInterceptors(new HttpHandShakeInterceptor()) .withSockJS(); } ```