参考博客进行SSM+websocket整合
2017-04-23 22:18
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参考博客地址:http://blog.csdn.net/gisredevelopment/article/details/38392629#
参考博客名称:spring+websocket整合(springMVC+spring+MyBatis即SSM框架和websocket技术的整合)
搭建环境:tomcat 7, jdk 8
二、【原文】更新web.xml中namespace.xsd的版本。这里不是web.xml文件,而是配置websocket
handler的文件里,如applicationContext.xml或者spring-XXX.xml文件(我这里即spring-mvc.xml文件),否则配置handler的文件会报错。
四、创建握手(handshake)接口(同原文)
五、处理类和握手协议的spring配置(applicationContext.xml文件)(同原文)
但在启动tomcat后,在浏览器访问html文件(http://localhost:8080/工程名/html名称)一直提示下面信息,无法通信
附上我的web.xml文件配置如下:
六、客户端页面(同原文)
注意:需修改两个url为自己映射的路径
<input
id="radio1" type="radio" name="group1" onclick="updateUrl('/spring-websocket-uptest工程名/websocket');">
<input id="radio2" type="radio" name="group1" onclick="updateUrl('/spring-websocket-uptest工程名//websocket');">
No adapter for handler [org.springframework.web.socket.server.support.WebSocketHttpRequestHandler
可能原因:工程中配置了adapter,但是此adapter处理不了websocket的handler,因此需要配置相应的adapter。我在这里删掉已经配置的adapter也可以,因为默认的HttpRequestHandlerAdapter就可以处理websocket的handler。
参考博客名称:spring+websocket整合(springMVC+spring+MyBatis即SSM框架和websocket技术的整合)
搭建环境:tomcat 7, jdk 8
搭建步骤:
一、在maven的pom.xml中加入websocket所依赖的jar包,spring版本4.0(同原文)<dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.3.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.3.0</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-websocket</artifactId> <version>4.0.1.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-messaging</artifactId> <version>4.0.1.RELEASE</version> </dependency>
二、【原文】更新web.xml中namespace.xsd的版本。这里不是web.xml文件,而是配置websocket
handler的文件里,如applicationContext.xml或者spring-XXX.xml文件(我这里即spring-mvc.xml文件),否则配置handler的文件会报错。
<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">三、创建websocket处理类(同原文)
public class WebsocketEndPoint extends TextWebSocketHandler { @Override protected void handleTextMessage(WebSocketSession session,TextMessage message) throws Exception { super.handleTextMessage(session, message); TextMessage returnMessage = new TextMessage(message.getPayload()+" received at server"); session.sendMessage(returnMessage); } }
四、创建握手(handshake)接口(同原文)
public class HandshakeInterceptor 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); } }
五、处理类和握手协议的spring配置(applicationContext.xml文件)(同原文)
<bean id="websocket" class="com.up.websocket.handler.WebsocketEndPoint"/>这里写自己的包名 <websocket:handlers> <websocket:mapping path="/websocket" handler="websocket"/> <websocket:handshake-interceptors> <bean class="com.up.websocket.HandshakeInterceptor"/>这里写自己的包名 </websocket:handshake-interceptors> </websocket:handlers>
但在启动tomcat后,在浏览器访问html文件(http://localhost:8080/工程名/html名称)一直提示下面信息,无法通信
附上我的web.xml文件配置如下:
<?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 http://www.springframework.org/schema/beans" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_1.xsd" version="3.0"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <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> </web-app>原因及解决方法:参考网友回答,将步骤五的配置放到spring-mvc.xml文件中即可
六、客户端页面(同原文)
注意:需修改两个url为自己映射的路径
<input
id="radio1" type="radio" name="group1" onclick="updateUrl('/spring-websocket-uptest工程名/websocket');">
<input id="radio2" type="radio" name="group1" onclick="updateUrl('/spring-websocket-uptest工程名//websocket');">
<!DOCTYPE html> <html> <head> <title>WebSocket/SockJS Echo Sample (Adapted from Tomcat's echo sample)</title> <style type="text/css"> #connect-container { float: left; width: 400px } #connect-container div { padding: 5px; } #console-container { float: left; margin-left: 15px; width: 400px; } #console { border: 1px solid #CCCCCC; border-right-color: #999999; border-bottom-color: #999999; height: 170px; overflow-y: scroll; padding: 5px; width: 100%; } #console p { padding: 0; margin: 0; } </style> <script src="http://cdn.sockjs.org/sockjs-0.3.min.js"></script> <script type="text/javascript"> var ws = null; var url = null; var transports = []; function setConnected(connected) { document.getElementById('connect').disabled = connected; document.getElementById('disconnect').disabled = !connected; document.getElementById('echo').disabled = !connected; } function connect() { alert("url:"+url); if (!url) { alert('Select whether to use W3C WebSocket or SockJS'); return; } ws = (url.indexOf('sockjs') != -1) ? new SockJS(url, undefined, {protocols_whitelist: transports}) : new WebSocket(url); ws.onopen = function () { setConnected(true); log('Info: connection opened.'); }; ws.onmessage = function (event) { log('Received: ' + event.data); }; ws.onclose = function (event) { setConnected(false); log('Info: connection closed.'); log(event); }; } function disconnect() { if (ws != null) { ws.close(); ws = null; } setConnected(false); } function echo() { if (ws != null) { var message = document.getElementById('message').value; log('Sent: ' + message); ws.send(message); } else { alert('connection not established, please connect.'); } } function updateUrl(urlPath) { if (urlPath.indexOf('sockjs') != -1) { url = urlPath; document.getElementById('sockJsTransportSelect').style.visibility = 'visible'; } else { if (window.location.protocol == 'http:') { url = 'ws://' + window.location.host + urlPath; } else { url = 'wss://' + window.location.host + urlPath; } document.getElementById('sockJsTransportSelect').style.visibility = 'hidden'; } } function updateTransport(transport) { alert(transport); transports = (transport == 'all') ? [] : [transport]; } function log(message) { var console = document.getElementById('console'); var p = document.createElement('p'); p.style.wordWrap = 'break-word'; p.appendChild(document.createTextNode(message)); console.appendChild(p); while (console.childNodes.length > 25) { console.removeChild(console.firstChild); } console.scrollTop = console.scrollHeight; } </script> </head> <body> <noscript><h2 style="color: #ff0000">Seems your browser doesn't support Javascript! Websockets rely on Javascript being enabled. Please enable Javascript and reload this page!</h2></noscript> <div> <div id="connect-container"> <input id="radio1" type="radio" name="group1" onclick="updateUrl(''/spring-websocket-uptest/websocket');"> <label for="radio1">W3C WebSocket</label> <br> <input id="radio2" type="radio" name="group1" onclick="updateUrl('/spring-websocket-uptest/websocket');"> <label for="radio2">SockJS</label> <div id="sockJsTransportSelect" style="visibility:hidden;"> <span>SockJS transport:</span> <select onchange="updateTransport(this.value)"> <option value="all">all</option> <option value="websocket">websocket</option> <option value="xhr-polling">xhr-polling</option> <option value="jsonp-polling">jsonp-polling</option> <option value="xhr-streaming">xhr-streaming</option> <option value="iframe-eventsource">iframe-eventsource</option> <option value="iframe-htmlfile">iframe-htmlfile</option> </select> </div> <div> <button id="connect" onclick="connect();">Connect</button> <button id="disconnect" disabled="disabled" onclick="disconnect();">Disconnect</button> </div> <div> <textarea id="message" style="width: 350px">Here is a message!</textarea> </div> <div> <button id="echo" onclick="echo();" disabled="disabled">Echo message</button> </div> </div> <div id="console-container"> <div id="console"></div> </div> </div> </body> </html>
最后效果:
附其他问题:No adapter for handler [org.springframework.web.socket.server.support.WebSocketHttpRequestHandler
可能原因:工程中配置了adapter,但是此adapter处理不了websocket的handler,因此需要配置相应的adapter。我在这里删掉已经配置的adapter也可以,因为默认的HttpRequestHandlerAdapter就可以处理websocket的handler。
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