39,083
社区成员
发帖
与我相关
我的任务
分享SSM websocket 404问题如何解决？
如题，Struts Sping MyBatis框架，增加WebSocket功能ws请求出现404问题，可能是什么原因导致的？
...全文
请发表友善的回复…
发表回复
yangjuanli 2018-08-14
- 打赏
- 举报
你好，我现在遇到的问题是ws可以正常建立链接，wss一直报404，用https可以访问我的项目，请问知道这是什么问题么？若知道帮忙告知下，谢谢！
csdn客服部 2017-03-19
- 打赏
- 举报
quanjinzhang 2017-03-19
- 打赏
- 举报
已解决，原因有2个：
1、我使用的是tomcat 7容器，tomcat7本身具有对websocket的实现，会和我在pom.xml中配置的如下内容
<groupId>javax.websocket</groupId>
<artifactId>javax.websocket-api</artifactId>
<version>1.1</version>冲突，故需要增加一句
<scope>provided</scope>表示只是编译是使用，这个大家可以参考：http://stackoverflow.com/questions/30500998/websocket-handshake-unexpected-response-code-404
2、struts中对websocket请求进行拦截了，需要配置不被拦截
在struts.properties中配置：
struts.action.excludePattern=/wsServer
注意：
1、如果想在struts.xml中配置，需先保证struts.properties文件中没有相同项配置，否则会覆盖struts.xml中相同项的配置内容，如在struts.xml中配置，内容如下：
<struts>
<constant name="struts.action.excludePattern" value="/wsServer"></constant>
2、这里配置的配置的内容，必须是request.getRequestURI()返回部分的内容，而不能配置类似于^ws://,^wss://.*，这是因为struts进行excludePattern匹配时就是使用request.getRequestURI()来进行匹配的，这个大家可以参考源代码org.apache.struts2.dispatcher.PrepareOperations.isUrlExcluded方法
quanjinzhang 2017-03-19
- 打赏
- 举报
//服务端
@ServerEndpoint(value = "/wsServer", configurator = GetHttpSessionConfigurator.class)
public class WsServerEndpoint {
private static final Logger LOGGER = Logger.getLogger(WsServerEndpoint.class);
private static final SimpleDateFormat TIME_FMT =
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");
private static Hashtable<String, Session> sessionMap = new Hashtable<String, Session>();
/**
* 接收到连接打开请求的处理方法.
*
* @param session
* @param config
*/
@OnOpen
public void onOpen(Session session, EndpointConfig config) {
HttpSession httpSession = WsUtil.getHttpSessionFromCfg(config, "WsServerEndpoint.onClose");
LOGGER.info(new StringBuilder("onOpen,").append(httpSession.getAttribute("name"))
.append(",").append(httpSession.getId()));
sessionMap.put(session.getId(), session);
}
/**
* 接收到连接关闭请求的处理方法.
*
* @param session
* @param config
*/
@OnClose
public void onClose(Session session, EndpointConfig config) {
HttpSession httpSession = WsUtil.getHttpSessionFromCfg(config, "WsServerEndpoint.onClose");
LOGGER.info(new StringBuilder("onClose,").append(httpSession.getAttribute("name"))
.append(",").append(httpSession.getId()));
sessionMap.remove(session.getId());
}
/**
* 接收到消息请求的处理方法.
*
* @param session
* @param config
* @throws IOException
*/
@OnMessage
public void onMessage(String message, Session session, EndpointConfig config)
throws IOException {
HttpSession httpSession =
WsUtil.getHttpSessionFromCfg(config, "WsServerEndpoint.onMessage");
LOGGER.info(new StringBuilder("onMessage,").append(httpSession.getAttribute("name"))
.append(",").append(httpSession.getId()));
String name = (String) httpSession.getAttribute("name");
String info =
new StringBuilder().append(name).append(" has sent message :").append(message)
.toString();
Session nowSess = sessionMap.get(session.getId());
for (Session everySess : session.getOpenSessions()) {
if (nowSess == everySess) {
// 回复当前发起消息的客户端
everySess.getBasicRemote().sendText(
new StringBuilder("server has got your message!").append(
TIME_FMT.format(new Date())).toString());
} else {
// 发送给其他客户端的消息
everySess.getBasicRemote().sendText(info);
}
}
}
@OnError
public void onError(Session session, EndpointConfig config, Throwable e) throws IOException {
HttpSession httpSession = WsUtil.getHttpSessionFromCfg(config, "WsServerEndpoint.onError");
LOGGER.info(new StringBuilder("onError,").append(httpSession.getAttribute("name"))
.append(",").append(httpSession.getId()));
session.getBasicRemote().sendText(
new StringBuilder("server encounter an exception,").append(TIME_FMT.format(new Date()))
.append(",e=").append(e).toString());
}
}
public class GetHttpSessionConfigurator extends Configurator {
@Override
public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request,
HandshakeResponse response) {
Object httpSession = request.getHttpSession();
sec.getUserProperties().put(HttpSession.class.getName(), httpSession);
}
}
//客户端
var ws = null;
function connect() {
ws= new WebSocket("ws://localhost:8088/wsServer");
ws.onopen = function () {
setConnected(true);
};
ws.onmessage = function (event) {
log('Received: ' + event.data);
};
ws.onclose = function (event) {
setConnected(false);
log('Info: connection closed.');
log(event);
};
}
