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spring框架下websocket的搭建

2024-07-13 10:05:52
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本文基于Apach Tomcat 8.0.3+MyEclipse+maven+JDK1.7

spring4.0以后加入了对websocket技术的支持,撸主目前的项目用的是SSM(springMVC+spring+MyBatis)框架,所以肯定要首选spring自带的websocket

1 在maven的pom.xml中加入websocket所依赖的jar包

<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.4.0</version></dependency><dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.4.0</version></dependency><dependency>  <groupId>org.springframework</groupId>  <artifactId>spring-websocket</artifactId>//version须和spring mvc的version保持一致,否则会出现问题  <version>4.0.5.RELEASE</version></dependency><dependency>  <groupId>org.springframework</groupId>  <artifactId>spring-messaging</artifactId>  <version>4.0.5.RELEASE</version></dependency>

2 更新spring-mvc.xml中namespace.xsd的版本

<beans xmlns="http://www.springframework.org/schema/beans"   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xmlns:websocket="http://www.springframework.org/schema/websocket"   xsi:schemaLocation="    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  http://www.springframework.org/schema/websocket http://www.springframework.org/schema/websocket/spring-websocket.xsd">

处理类和握手协议的spring配置(applicationContext.xml文件)

<bean id="websocket" class="com.xl.websocket.handler"/><websocket:handlers>  <websocket:mapping path="/websocket" handler="websocket"/>  <websocket:handshake-interceptors>  <bean class="com.xl.websocket.HandshakeInterceptor"/>  </websocket:handshake-interceptors>   <websocket:sockjs/></websocket:handlers>

webconfig

@Overridepublic void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {      registry.addHandler(new HelloHandler(), "/hello").addInterceptors(new HandshakeInterceptor()).withSockJS().setHttpMessageCacheSize(20000);    }

3 创建握手(handshake)接口

public class HandshakeInterceptor extends HttpSessionHandshakeInterceptor { @Override public boolean beforeHandshake(ServerHttpRequest arg0,  ServerHttpResponse arg1, WebSocketHandler arg2,  Map<String, Object> arg3) throws Exception {  System.out.println("---- Before Handshake ----"); return super.beforeHandshake(arg0, arg1, arg2, arg3); }  @Override public void afterHandshake(ServerHttpRequest request,  ServerHttpResponse response, WebSocketHandler wsHandler,  Exception ex) {  System.out.println("---- After Handshake ----"); super.afterHandshake(request, response, wsHandler, ex); }}

4  创建websocket处理类

public class HelloHandler extends TextWebSocketHandler {  public static List<WebSocketSession> users; static{ users = new ArrayList<WebSocketSession>(); }  @Override  public void handleTextMessage(WebSocketSession session, TextMessage message) {    //接收到客户端消息时调用    System.out.println("text message: " + session.getId() + "-" + message.getPayload());  }  @Override  public void afterConnectionEstablished(WebSocketSession session)      throws Exception {    // 与客户端完成连接后调用    System.out.println("afterConnectionEstablished");    System.out.println("getId:" + session.getId());    System.out.println("getLocalAddress:" + session.getLocalAddress().toString());    System.out.println("getTextMessageSizeLimit:" + session.getTextMessageSizeLimit());    System.out.println("getUri:" + session.getUri().toString());    System.out.println("getPrincipal:" + session.getPrincipal());    System.out.println(soslistService.getsss());    session.sendMessage(new TextMessage("你好"));        users.add(session);  }  @Override  public void handleTransportError(WebSocketSession session,      Throwable exception) throws Exception {    // 消息传输出错时调用    System.out.println("handleTransportError");  }  @Override  public void afterConnectionClosed(WebSocketSession session,      CloseStatus closeStatus) throws Exception {    // 一个客户端连接断开时关闭    System.out.println("afterConnectionClosed");  }  @Override  public boolean supportsPartialMessages() {    // TODO Auto-generated method stub    return false;  }}

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持VeVb武林网。


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