Spring 4+Stomp WebSocket+RabbitMQ 3.6.5+Tomcat 8搭建WebSocket服务

本次用的版本为Spring 4.3.0.Release、Tomcat 8、RabbitMQ 3.6.5。

首先应该先安装RabbitMQ服务器，最好是最新版的，并且启动Rabbit stomp插件：

rabbitmq-plugins enable rabbitmq_stomp

可以用rabbitmq-plugins list命令来查看插件是否已经启动。需要注意的是该插件默认监听的端口是61613，而不是rabbit server的默认端口（5672）。所以在Spring中不需要配置消息服务器的连接端口（默认就是61613）：

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer{
    @Overridepublic void registerStompEndpoints(StompEndpointRegistry stompEndpointRegistry) {//加入setAllowedOrigins("*")防止浏览器出现403 Forbidden的问题stompEndpointRegistry.addEndpoint("/pay-result").setAllowedOrigins("*").withSockJS();}@Overridepublic void configureMessageBroker(MessageBrokerRegistry registry) {registry.enableStompBrokerRelay("/topic", "/queue");registry.setApplicationDestinationPrefixes("/app");}
}

如果端口配置错误，在web程序启动和运行期间会一直出现ERROR StompBrokerRelayMessageHandler - TCP connection failure in session _system_: Transport failure: Connection reset by peer
这种错误：

2016-10-19 18:47:20 ERROR StompBrokerRelayMessageHandler - TCP connection failure in session _system_: Transport failure: Connection reset by peer
java.io.IOException: Connection reset by peerat sun.nio.ch.FileDispatcherImpl.read0(Native Method)at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)at sun.nio.ch.IOUtil.read(IOUtil.java:192)at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288)at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100)at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:366)at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118)at io.netty.channel