springboot+websocket+stomp+sockjs+rabbitmq实现消息推送或即时通讯

总结一下实现过的springboot+websocket+stomp+sockjs+rabbitmq的问题
如何实现,网上的代码非常多,很容易就实现,具体的理解要看自己了,websocket本身是支持
文本和二进制传输,但是sockJS是不支持二进制的,经过查询了一下,作者也说没有时间搞这一块,lz自己测试客户端到服务端是可以传输二进制的,但是服务器无法向web端传输二进制,发送二进制会断开websocket连接。所以如果需要传输二进制,可以直接使用websocket。sockjs的优势在于可以处理不支持websocket的浏览器,会使用轮训来实现

使用的是springboot2.1.7
pom.xml添加依赖


			org.springframework.boot
			spring-boot-starter-websocket
		
		
			org.springframework.boot
			spring-boot-starter-amqp
		

java类


import java.security.Principal;
import java.util.List;
import java.util.Map;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.messaging.converter.ByteArrayMessageConverter;
import org.springframework.messaging.converter.MessageConverter;
import org.springframework.messaging.simp.config.ChannelRegistration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
import org.springframework.web.socket.server.support.DefaultHandshakeHandler;

@Configuration
@EnableWebSocketMessageBroker // 注解开启STOMP协议来传输基于代理的消息,此时控制器支持使用@MessageMapping
public class WebSocketConfig  implements WebSocketMessageBrokerConfigurer {

	@Override
	public void configureMessageBroker(MessageBrokerRegistry config) {
		config.enableSimpleBroker("/topic", "/user");// topic用来广播,user用来实现p2p
	}
	
	@Override
	public boolean configureMessageConverters(List messageConverters) {
		messageConverters.add(new ByteArrayMessageConverter());
        return true;
    }

	@Override
	public void registerStompEndpoints(StompEndpointRegistry registry) {
		registry.addEndpoint("/webServer").setHandshakeHandler(new DefaultHandshakeHandler() {
			@Override
			protected Principal determineUser(ServerHttpRequest request, WebSocketHandler wsHandler,
					Map attributes) {
				// 将客户端标识封装为Principal对象,从而让服务端能通过getName()方法找到指定客户端
				Object o = attributes.get("name");
				return new FastPrincipal(o.toString());
			}
		}).addInterceptors(new HandleShakeInterceptors()).setAllowedOrigins("*");//.withSockJS()
		registry.addEndpoint("/queueServer").setHandshakeHandler(new DefaultHandshakeHandler() {
			@Override
			protected Principal determineUser(ServerHttpRequest request, WebSocketHandler wsHandler,
					Map attributes) {
				// 将客户端标识封装为Principal对象,从而让服务端能通过getName()方法找到指定客户端
				Object o = attributes.get("name");
				return new FastPrincipal(o.toString());
			}
		}).addInterceptors(new HandleShakeInterceptors()).setAllowedOrigins("*");//.withSockJS() 注册两个STOMP的endpoint,分别用于广播和点对点
	}
	
	/**
	 * 这是用于配置服务器向浏览器发送的消息。 clientOut就表示出出口。还有一个inBoundChannel用于处理浏览器向服务器发送的消息
	 * corePoolSize(1)处理的工作线程设置1,阻塞保证消息时序性,期待更好的解决方案(比如多个消费者动态创建多个queue)
	 * 
	 * @param registration
	 */
	@Override
	public void configureClientOutboundChannel(ChannelRegistration registration) {
		registration.taskExecutor().corePoolSize(1).maxPoolSize(1);
	}

	// 定义一个自己的权限验证类
	class FastPrincipal implements Principal {

		private final String name;

		public FastPrincipal(String name) {
			this.name = name;
		}

		public String getName() {
			return name;
		}
	}
	
}

HandleShakeInterceptors.java


import java.util.Map;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.server.HandshakeInterceptor;

/**
 * 检查握手请求和响应, 对WebSocketHandler传递属性
 */
public class HandleShakeInterceptors implements HandshakeInterceptor {

    /**
     * 在握手之前执行该方法, 继续握手返回true, 中断握手返回false.
     * 通过attributes参数设置WebSocketSession的属性
     *
     * @param request
     * @param response
     * @param wsHandler
     * @param attributes
     * @return
     * @throws Exception
     */
    
    public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
                                   WebSocketHandler wsHandler, Map attributes) throws Exception {
        String name= ((ServletServerHttpRequest) request).getServletRequest().getParameter("name");
        //保存客户端标识
        attributes.put("name", "caopc");
        return true;
    }

    /**
     * 在握手之后执行该方法. 无论是否握手成功都指明了响应状态码和相应头.
     *
     * @param request
     * @param response
     * @param wsHandler
     * @param exception
     */
    public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response,
                               WebSocketHandler wsHandler, Exception exception) {

    }
    
}

web端访问的controller

@Controller
public class SubController {

	
    @Autowired
    public SimpMessagingTemplate template;  
      
    
    @MessageMapping("/subscribe")
    public void subscribe(ReceiveMessage rm) {
        for(int i =1;i<=20;i++) {
            //广播使用convertAndSend方法,第一个参数为目的地,和js中订阅的目的地要一致
            template.convertAndSend("/topic/getResponse", rm.getName());
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }
    
    @MessageMapping("/queue")
    //public void queue(ReceiveMessage rm) {
    	 public void queue(Principal principal,Message message) throws UnsupportedEncodingException {
            /*广播使用convertAndSendToUser方法,第一个参数为用户id,此时js中的订阅地址为
            "/user/" + 用户Id + "/message",其中"/user"是固定的*/
	    	byte[]  messageInByte = message.getPayload();
	    	System.out.println(new String(messageInByte,"utf-8"));
    		//parseMessage(new String(messageInByte,"utf-8"));
    		template.convertAndSendToUser("userid","/message",messageInByte);
    		

    }

然后是queue.html,转换方法可以不用在意,是lz测试时候使用的




    
    Hello queue
    
    
       
    



用户Id
控制消息

topic.html



    
    Hello topic
    
    
       
    



UserId

application配置文件只配置rabbitmq地址即可

server.port=8989
spring.application.name=xxxx
#spring.rabbitmq.host= 40.122.118.224
#spring.rabbitmq.port= 5672
#spring.rabbitmq.username=xxx
#spring.rabbitmq.password=xxxx
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false

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