spring-websocket - 如何在 HandshakeInterceptor 中设置主体

Question

我正在使用 Spring 的 WebSockets 的一个非常简单的实现。 WebSocketSession 有 getPrincipal() 方法，但如何从 HandshakeInterceptor 中设置它？

我想把校长放进去的方法是:

public boolean beforeHandshake(final ServerHttpRequest request, final ServerHttpResponse response, final WebSocketHandler wsHandler,
        final Map<String, Object> attributes) throws Exception {
    Principal = getPrincipal();
    // Now where to set the principal so it is available in WebSocketSession?

}

Answer 1

registry.addEndpoint("/hello") 
.setHandshakeHandler(new DefaultHandshakeHandler() {
     @Override
     protected Principal determineUser(ServerHttpRequest request, WebSocketHandler wsHandler, Map<String, Object> attributes) {

 //Here you can set and return principal that is used by websocket session.            
}