【spring+websocket的使用】

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【spring+websocket的使用】
一、spring配置文件Java代码

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:websocket="http://www.springframework.org/schema/websocket"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/websocket

http://www.springframework.org/schema/websocket/spring-websocket-4.1.xsd ">

<context:annotation-config />

<mvc:annotation-driven/>


<context:component-scan base-package="com.soccermaster.websocket"></context:component-scan>
<context:component-scan base-package="com.soccermaster.service"></context:component-scan>
<context:component-scan base-package="com.soccermaster.dao"></context:component-scan>


<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:viewClass="org.springframework.web.servlet.view.JstlView"
   p:prefix="/WEB-INF/pages/" p:suffix=".jsp">
</bean>

</beans>

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二、web.xml配置

注意：必须将相应filter和servlet加入

Java代码

<async-supported>true</async-supported>

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<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
  <display-name>spring websocket信息推送</display-name>
  <welcome-file-list>
<welcome-file>testSocket.jsp</welcome-file>
  </welcome-file-list>
  <listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  </listener>
  <servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<async-supported>true</async-supported>
  </servlet>
  <servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
  </servlet-mapping>
  <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mybatis.xml</param-value>
  </context-param>
  <filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<async-supported>true</async-supported>
<init-param>
   <param-name>encoding</param-name>
   <param-value>UTF-8</param-value>
</init-param>
  </filter>
  <filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
  </filter-mapping>
  <session-config>
<session-timeout>30</session-timeout>
  </session-config>
</web-app>

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三、代码

a、websocketconfig

Java代码

package com.soccermaster.websocket;


import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;

import org.springframework.context.annotation.Bean;

@Configuration
@EnableWebMvc
@EnableWebSocket
public class WebSocketConfig extends WebMvcConfigurerAdapter implements WebSocketConfigurer {

public WebSocketConfig() {
}

@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
      registry.addHandler(systemWebSocketHandler(), "/websck").addInterceptors(new WebSocketHandshakeInterceptor());

      System.out.println("registed!");
      registry.addHandler(systemWebSocketHandler(), "/sockjs/websck/info").addInterceptors(new WebSocketHandshakeInterceptor()).withSockJS();

}

@Bean
public WebSocketHandler systemWebSocketHandler() {
      //return new InfoSocketEndPoint();
      return new SystemWebSocketHandler();
}

}

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b、WebSocketHandshakeInterceptor

Java代码

package com.soccermaster.websocket;


import java.util.Map;

import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor;


@Component
public class WebSocketHandshakeInterceptor extends HttpSessionHandshakeInterceptor {

@Override
public boolean beforeHandshake(ServerHttpRequest request,
         ServerHttpResponse response, WebSocketHandler wsHandler,
         Map<String, Object> attributes) throws Exception {
      System.out.println("Before Handshake");
      return super.beforeHandshake(request, response, wsHandler, attributes);
}

@Override
public void afterHandshake(ServerHttpRequest request,
         ServerHttpResponse response, WebSocketHandler wsHandler,
         Exception ex) {
      System.out.println("After Handshake");
      super.afterHandshake(request, response, wsHandler, ex);
}

}

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c、SystemWebSocketHandler

Java代码

package com.soccermaster.websocket;


import java.io.IOException;
import java.util.ArrayList;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketMessage;
import org.springframework.web.socket.WebSocketSession;

import com.soccermaster.service.IMatchService;
import com.soccermaster.util.json.JsonConvert;

/**

*

*/
@Component
public class SystemWebSocketHandler implements WebSocketHandler {

@Autowired
private IMatchService matchService;

private static final Logger logger;
private static final ArrayList<WebSocketSession> users;

static {
      users = new ArrayList<WebSocketSession>();
      logger = LoggerFactory.getLogger(SystemWebSocketHandler.class);
}

@Override
public void afterConnectionEstablished(WebSocketSession session)
         throws Exception {
      logger.debug("connect to the websocket success......");
      System.out.println("connect to the websocket success......");
      session.sendMessage(new TextMessage("Server:connected OK!"));

      users.add(session);
}

@Override
public void handleMessage(WebSocketSession wss, WebSocketMessage<?
> wsm)
         throws Exception {
      logger.debug("websocket handle message......");
            TextMessage returnMessage = new TextMessage(result);
      wss.sendMessage("服务端返回信息");
      //sendMessageToUsers(wss, wsm);
}

@Override
public void handleTransportError(WebSocketSession wss, Throwable thrwbl)
         throws Exception {
      if (wss.isOpen()) {
         wss.close();
      }
      users.remove(wss);
      logger.debug("websocket connection closed happen error......");
      System.out.println("websocket connection closed happen error......");
}

@Override
public void afterConnectionClosed(WebSocketSession wss, CloseStatus cs)
         throws Exception {
      System.out.println("websocket connection closed......");
      users.remove(wss);
      logger.debug("websocket connection closed......");
}

@Override
public boolean supportsPartialMessages() {
      return false;
}

}

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四、相关项目jar包

http://pan.baidu.com/s/1sjI9GOt

如上基本完毕 spring websocket

环境要求tomcat7及其以上  + jdk 1.7
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原文地址：https://www.cnblogs.com/claireyuancy/p/7134257.html