Wildfly中的Spring Boot Websockets-Java 学习之路

嗨，我需要将我的Spring Boot应用程序部署到Wildfly 8.1中，并且我得到以下异常：

引起：java.lang.RuntimeException：java.lang.ClassCastException：org.apache.tomcat.websocket.server.WsServerContainer无法转发到io.undertow.servlet.core.DeploymentManagerImpl的io.undertow.websockets.jsr.ServerWebSocketContainer .deploy（DeploymentManagerImpl.java:219）org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext（UndertowDeploymentService.java:87）org.wildfly.extension.undertow.deployment.UndertowDeploymentService.start（UndertowDeploymentService.java:72））org.jboss.msc.service.ServiceControllerImpl $ startTask.startService（ServiceControllerImpl.java:1948）[jboss-msc-1.2.2.Final.jar：1.2.2.Final] org.jboss.msc.service . ServiceControllerImpl $ StartTask.run（ServiceControllerImpl.java:1881)[jboss-msc-1.2.2.Final.jar:1.2.2.Final] ... 3更多引起：java.lang.ClassCastException：org.apache.tomcat .websocket.server.WsServerContainer无法转发到io.undertow.websockets.jsr.Boot的io.undertow.websockets.jsr.ServerWebSocketContainer在io.undertow.servlet.core.ApplicationListeners.contextInitialized（ApplicationListeners.java:173）的io.undertow.servlet.core.DeploymentManagerImpl.deploy（DeploymentManagerImpl.java:190）中绑定$ WebSocketListener.contextInitialized（Bootstrap.java:69） ......还有7个

似乎我的websockets和消息传递设置可能是罪魁祸首？我正在看这个https://github.com/joshlong/boot-examples/issues/2所提议的解决方案似乎都不适合我 . 这是我的pom的依赖：

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.1.6.RELEASE</version>
</parent>

<dependencies>

    <!--Testing-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>${apache.httpcomponents.version}</version>
    </dependency>

    <!-- Spring -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-websocket</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-messaging</artifactId>
    </dependency>
    <dependency>
        <groupId>org.thymeleaf</groupId>
        <artifactId>thymeleaf-spring4</artifactId>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
    </dependency>

    <!--Database-->
    <dependency>
        <groupId>org.hsqldb</groupId>
        <artifactId>hsqldb</artifactId>
        <version>2.3.1</version>
    </dependency>
    <dependency>
        <groupId>postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>9.1-901.jdbc4</version>
    </dependency>
</dependencies>

我也试过使用直接的spring-boot-starter-websocket但是得到同样的东西 . 这也是我的websocket配置：

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer{

@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
    super.configureMessageBroker(registry);
    registry.enableSimpleBroker("/ssp");
    registry.setApplicationDestinationPrefixes("/inc");
}

@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
    registry.addEndpoint("/update/applications");
}
}

感谢您抽时间阅读 . 任何帮助我都会非常感激 . 此外，这是我的第一个启动应用程序 . ：/

4 回答

你需要排除tomcat-embed-websocket

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-websocket</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

回复于 2024-04-28T13:01:18+08:00

spring-boot-starter-web和spring-boot-starter-websocket默认包含spring-boot-starter-tomcat所以排除tomcat，如下所示

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>${spring-boot.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

     <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-websocket</artifactId>
        <version>${spring-boot.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

并包括下载，确保tomcat不存在于类路径中的任何位置 .

回复于 2024-04-28T13:01:18+08:00

我不确定，但是围绕websockets的POM应该是这样的：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-websocket</artifactId>
    <scope>provided</scope>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

spring-messaging ， spring-websocket ， jackson-databind ， spring-boot-starter-web 是多余的 .

还有 spring-boot-starter-thymeleaf .

但是我认为你的事业的根源是 tomcat-embed-websocket .

回复于 2024-04-28T13:01:18+08:00

2
使用以下命令查找包含 spring-boot-starter-tomcat 的所有依赖项：
```
mvn dependency:tree -Dincludes=org.springframework.boot:spring-boot-starter-tomcat
```
从此命令列出的所有依赖项中排除Tomcat启动程序 .

之后，您可能需要添加 javax.servlet-api 作为提供的依赖项：
```
<dependency>
    <artifactId>javax.servlet</artifactId>
    <groupId>javax.servlet-api</groupId>
    <scope>provided</scope>
</dependency>
```
Gradle用户遇到此问题：查看此票证的评论：https://github.com/spring-projects/spring-boot/issues/6166
回复于 2024-04-28T13:01:18+08:00

Wildfly中的Spring Boot Websockets

4 回答

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