spring websocket demo

一 java依赖

gradle 配置
implementation "org.springframework.boot:spring-boot-starter-websocket"
implementation "org.springframework.security:spring-security-messaging"

二 配置WebSocketConfig

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.simp.config.ChannelRegistration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.messaging.simp.stomp.StompCommand;
import org.springframework.messaging.simp.stomp.StompHeaderAccessor;
import org.springframework.messaging.support.ChannelInterceptor;
import org.springframework.messaging.support.MessageHeaderAccessor;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;

@Configuration
@EnableWebSocketMessageBroker
@Order(Ordered.HIGHEST_PRECEDENCE + 99)
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {

    @Value("${customize.controller.path}/ws")
    String endpoint;

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint(endpoint).setAllowedOrigins("*");
    }

    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.setApplicationDestinationPrefixes("/control");
        ThreadPoolTaskScheduler pool = new ThreadPoolTaskScheduler();
        pool.setPoolSize(1);
        pool.setThreadNamePrefix("wss-heartbeat-thread-");
        pool.initialize();

        config.enableSimpleBroker("/topic")
            .setHeartbeatValue(new long[]{1000L * 30, 1000L * 30}).setTaskScheduler(pool);
    }

    @Override
    public void configureClientInboundChannel(ChannelRegistration registration) {
        registration.interceptors(new ChannelInterceptor() {
            @Override
            public Message preSend(Message message, MessageChannel channel) {
                StompHeaderAccessor accessor =
                    MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor.class);
                if (StompCommand.CONNECT.equals(accessor.getCommand())) {
                 // 设置鉴权
                    /*LoginInfo loginInfo = loginInfoManager.getLoginInfo(accessor);
                    if (loginInfo != null) {
                        UsernamePasswordAuthenticationToken authenticationToken =
                            new UsernamePasswordAuthenticationToken(loginInfo, null, loginInfo.getAuthorities());
                        accessor.setUser(authenticationToken);
                    }*/
                }
                return message;
            }
        });
    }
}

三 配置鉴权 WebSocketSecurityConfig

注意将 ${customize.controller.path}/ws 路由放行

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.messaging.MessageSecurityMetadataSourceRegistry;
import org.springframework.security.config.annotation.web.socket.AbstractSecurityWebSocketMessageBrokerConfigurer;

@Configuration
public class WebSocketSecurityConfig extends AbstractSecurityWebSocketMessageBrokerConfigurer {

    @Override
    protected void configureInbound(MessageSecurityMetadataSourceRegistry messages) {
        messages.anyMessage().authenticated();
    }

    @Override
    protected boolean sameOriginDisabled() {
        return true;
    }

}

四 建立连接处理

import java.util.Objects;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationListener;
import org.springframework.messaging.simp.SimpMessagingTemplate;
import org.springframework.messaging.simp.stomp.StompHeaderAccessor;
import org.springframework.stereotype.Component;
import org.springframework.web.socket.messaging.SessionSubscribeEvent;

@Component
public class WebSocketListener implements ApplicationListener {

    private static final String TOPIC_PREFIX = "/topic";
    @Autowired
    SimpMessagingTemplate template;
    private static final Logger logger = LoggerFactory.getLogger(WebSocketListener.class);


    @Override
    public void onApplicationEvent(SessionSubscribeEvent sessionSubscribeEvent) {
        StompHeaderAccessor accessor = StompHeaderAccessor.wrap(sessionSubscribeEvent.getMessage());
        String topic = Objects.toString(accessor.getHeader("simpDestination"));
        if (StringUtils.startsWith(topic, TOPIC_PREFIX)) {
            String message = "{\"user\": 111, \"usrMsg\": 888}";
            template.convertAndSend(topic, message);
            logger.info("订阅{},首次响应数据:{}", topic, message);
        }
    }
}

五 接受客户端发送消息

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.handler.annotation.Payload;
import org.springframework.messaging.simp.SimpMessagingTemplate;
import org.springframework.stereotype.Controller;

@Controller
public class WebSocketController {

    @Autowired
    SimpMessagingTemplate template;
    private static final Logger logger = LoggerFactory.getLogger(WebSocketListener.class);

    @MessageMapping("/topic/test")
    public void broadcastNews(@Payload String message) {
        logger.info("-----{}", message);
        String res = "{\"user\": 111, \"usrMsg\": \"from server\"}";
        template.convertAndSend("/topic/test", res);
    }
}

六 前端简易js

springweb 项目直接放在resource/statis目录下即可访问

/assets 目录下

style.css 文件内容

/* CSS Document */
body {
  font: 12px arial;
  color: #222;
  text-align: center;
  padding: 35px;
}

p, span {
  margin: 0;
  padding: 0;
}

input {
  font: 12px arial;
}

a {
  color: #0000FF;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

#wrapper {
  margin: 0 auto;
  padding-bottom: 25px;
  background: #EBF4FB;
  width: 504px;
  border: 1px solid #ACD8F0;
}

#wrapper ul {
  text-align: left;
}

#chatbox {
  text-align: left;
  margin: 0 auto;
  margin-bottom: 25px;
  padding: 10px;
  background: #fff;
  height: 270px;
  width: 430px;
  border: 1px solid #ACD8F0;
  overflow: auto;
}

#chatbox span.user {
  font-weight: bold;
  color: darkslateblue;
  padding-right: 2pt;
}

#usermsg {
  width: 395px;
  border: 1px solid #ACD8F0;
}

#chatbox span.problem {
  font-weight: bold;
  color: darkslateblue;
  padding-right: 2pt;
}

#chatbox span.solution {
  font-weight: bold;
  color: darkgreen;
  padding-right: 2pt;
}

#submit {
  width: 60px;
}

.error {
  color: #ff0000;
}

#menu {
  padding: 12.5px 25px 12.5px 25px;
}

.msgln {
  margin: 0 0 2px 0;
}

/js 目录下

jquery.min.js

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