Wildfly中的Spring Boot Websockets

Question

您好，我需要将我的Spring Boot应用程序部署到Wildfly 8.1中，我遇到以下异常：

原因：java。RuntimeException:java。lang.ClassCastException：组织。阿帕奇。公猫websocket。服务器WsServerContainer无法转换为io。下拖。websockets。jsr。io上的ServerWebSocketContainer。下拖。servlet。果心DeploymentManagerImpl。在组织上部署（DeploymentManagerImpl.java:219）。野蝇。扩大下拖。部署。在部署服务下。位于org的startContext（UndertowDeploymentService.java:87）。野蝇。扩大下拖。部署。在部署服务下。在org上启动（UndertowDeploymentService.java:72）。jboss。理学硕士。服务ServiceControllerImpl$StartTask。startService（ServiceControllerImpl.java:1948）[jboss-msc-1.2.2.Final.jar:1.2.2.Final]位于org。jboss。理学硕士。服务ServiceControllerImpl$StartTask。运行（ServiceControllerImpl.java:1881）[jboss-msc-1.2.2.Final.jar:1.2.2.Final]。。。3更多原因：java。lang.ClassCastException：组织。阿帕奇。公猫websocket。服务器WsServerContainer无法转换为io。下拖。websockets。jsr。io上的ServerWebSocketContainer。下拖。websockets。jsr。Bootstrap$WebSocketListener。contextInitialized（Bootstrap.java:69）位于io。下拖。servlet。果心应用程序侦听器。contextInitialized（ApplicationListeners.java:173）位于io。下拖。servlet。果心DeploymentManagerImpl。部署（DeploymentManagerImpl.java:190）。。。7个以上

似乎我的webockets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提出的解决方案似乎都不适合我。以下是我的pom的依赖项：

<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>

我也尝试过使用direct spring boot starter websocket，但得到了同样的结果。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");
}
}

感谢您抽出时间阅读本文。我将不胜感激。此外，这是我的第一个启动应用程序。：/

Answer 1

我不确定，但您在websockets周围的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都是冗余的。

还有Spring启动装置thymeleaf。

然而，我认为您的原因是tomcat嵌入websocket。

Answer 2

spring-boot-starter-web和spring-boot-starter-websocket默认包含spring-boot-starter-tomcat，因此排除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undertow，确保tomcat在类路径中不存在。

Answer 3

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>