Spring Boot WebSockets 无法找到当前用户(主体)

问题描述

登录后，websockets 无法通过 session.getPrincipal() 找到当前用户(返回 null).

After signing-in, the websockets cannot find the current user by session.getPrincipal() (it returns null).

这是 WebSockets 的 Java 代码:

Here is the Java code for WebSockets:

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfiguration extends AbstractWebSocketMessageBrokerConfigurer {
    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/queue", "/topic");
        config.setApplicationDestinationPrefixes("/socket");
        config.setUserDestinationPrefix("/user");
    }

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/app").withSockJS();
    }
}

这似乎是一个 Spring Boot 错误 - 我正在使用 1.3.8 RELEASE.刷新页面后，正确获取登录用户.

It seems like a Spring Boot bug - I am using 1.3.8 RELEASE. After refreshing the page, it gets the logged-in user properly.

这里是前端(订阅)

ngstomp.subscribeTo('/user/queue/message')
.callback(function(response) {
    console.log('Test');
})
.withBodyInJson()
.connect();

我尝试了这个解决方案:https://www.javacodegeeks.com/2014/11/spring-boot-based-websocket-application-and-capturing-http-session-id.html

I tried this solution: https://www.javacodegeeks.com/2014/11/spring-boot-based-websocket-application-and-capturing-http-session-id.html

但它不起作用.

请帮帮我！

推荐答案

为什么需要 session.getPricncipal().Spring 提供 Principal 对象以自动注入您的控制器，如下所示.

Why you required to have session.getPricncipal(). Spring provides Principal object to be injected automatically in your controller as following.

@MessageMapping("/message")
public String processMessageFromClient(@Payload String message, Principal principal) throws Exception {
        messagingTemplate.convertAndSendToUser(principal.getName(),    "/queue/reply", name);
        return name;
    }

参考:Spring Boot Websocket 示例

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