问题描述
限时送ChatGPT账号..我想基于示例创建一个 WebSocket.唯一的问题是我在嵌入式 tomcat 中运行我的应用程序.
I want to create a WebSocket based on an example. The only spin is that I'm running my application in embedded tomcat.
package com.test.websocket;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.handler.AbstractWebSocketHandler;
public class WebSocketTest extends AbstractWebSocketHandler {
private static Logger logger = LoggerFactory.getLogger(WebSocketTest.class);
@Override
protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
logger.debug("Recieved websocket message: " + message);
session.sendMessage(new TextMessage("thanks"));
}
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
logger.info("WebSocket connection established!");
}
@Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
logger.info("WebSocket connection closed!");
}
}
配置(websocket.spring.xml):
Configuration(websocket.spring.xml):
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework/schema/beans"
xmlns:xsi="http://www.w3/2001/XMLSchema-instance"
xmlns:websocket="http://www.springframework/schema/websocket"
xsi:schemaLocation="http://www.springframework/schema/beans
http://www.springframework/schema/beans/spring-beans.xsd
http://www.springframework/schema/websocket
http://www.springframework/schema/websocket/spring-websocket.xsd">
<websocket:handlers>
<websocket:mapping path="/socket" handler="webSocketHandler"/>
</websocket:handlers>
<bean id="webSocketHandler" class="com.test.websocket.WebSocketTest"/>
</beans>
Servlet 映射位于/websocket/*
Servlet mapping is at /websocket/*
从日志看来,spring-websocket 似乎已成功初始化,但是当我尝试连接到 websocket 时出现此错误.
From the log It seems like the spring-websocket is initialized successfully however I'm getting this error, when I try to connect to the websocket.
Servlet.service() for servlet [spring-websocket] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.socket.server.HandshakeFailureException: Uncaught failure for request http://localhost:9876/websocket/socket; nested exception is java.lang.IllegalArgumentException: No 'javax.websocket.server.ServerContainer' ServletContext attribute. Are you running in a Servlet container that supports JSR-356?] with root cause
依赖项是:tomcat-embed-core、tomcat-embed-websocket、tomcat-juli 并且因为 (Spring websocket 示例 - 错误 - 您是否在支持 J SR-356 的 Servlet 容器中运行?)javax.websocket-api 和tomcat-websocket
Dependencies are: tomcat-embed-core, tomcat-embed-websocket, tomcat-juli and because of (Spring websocket example - error - Are you running in a Servlet container that supports J SR-356?) javax.websocket-api and tomcat-websocket
我错过了什么?
提前致谢!
推荐答案
也许我找到了解决您问题的方法.
Maybe i found a solution to your problem.
您需要使用 WsSci servlet 容器初始化器来嵌入 tomcat 上下文:
You need to use WsSci servlet container initializer to the embedded tomcat context:
context.addServletContainerInitializer(new WsSci(), null);
context.addServletContainerInitializer(new WsSci(), null);
https://github/spring-projects/spring-boot/问题/439
这篇关于嵌入式 tomcat 8.0.21 中的 Spring websocket的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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