java - 无法加载容器提供程序类 : org. glassfish.tyrus.container.grizzly.GrizzlyEngine

Question

我是 WebSockets 的新手。为了开始学习，我关注了this教程 。并简单地复制 ClientEndpoint 和 ServerEndpoint 并使用 tyrus 部署服务器。

但是当我尝试运行服务器时它会抛出这个错误:

Failed to load container provider class: org.glassfish.tyrus.container.grizzly.GrizzlyEngine

这是部署代码(我已经注释掉我出错的行):

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.glassfish.tyrus.server.Server;

public class WebSocketServer {

    public static void main(String[] args) {
        runServer();
    }

    public static void runServer() {

        Server server = new Server("localhost", 8000, "/websockets", WordgameServerEndpoint.class);

        try {
            server.start(); //i get the error on this line
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            System.out.print("Please press a key to stop the server.");
            reader.readLine();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        } finally {
            server.stop();
        }
    }
}

这是服务器代码:

import java.io.IOException;
import java.util.logging.Logger;

import javax.websocket.CloseReason;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.CloseReason.CloseCodes;
import javax.websocket.server.ServerEndpoint;

@ServerEndpoint(value = "/game")
public class WordgameServerEndpoint {

    private Logger logger = Logger.getLogger(this.getClass().getName());

    @OnOpen
    public void onOpen(Session session) {
        logger.info("Connected ... " + session.getId());
    }

    @OnMessage
    public String onMessage(String message, Session session) {
        switch (message) {
            case "quit":
                try {
                    session.close(new CloseReason(CloseCodes.NORMAL_CLOSURE, "Game ended"));
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
                break;
        }
        return message;
    }

    @OnClose
    public void onClose(Session session, CloseReason closeReason) {
        logger.info(String.format("Session %s closed because of %s", session.getId(), closeReason));
    }
}

我会很感激任何帮助:)

Answer 1

这似乎是一个依赖问题，

如果你是maven用户:

<dependencies>
    <dependency>
        <groupId>javax.websocket</groupId>
        <artifactId>javax.websocket-api</artifactId>
        <version>1.0</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.tyrus</groupId>
        <artifactId>tyrus-server</artifactId>
        <version>1.1</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.tyrus</groupId>
        <artifactId>tyrus-client</artifactId>
        <version>1.1</version>
    </dependency>

    <dependency>
        <groupId>org.glassfish.tyrus</groupId>
        <artifactId>tyrus-container-grizzly</artifactId>
        <version>1.1</version>
    </dependency>

    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.5</version>
    </dependency>
</dependencies>

或加载以下 jar :

• grizzly-framework-2.3.3.jar
• grizzly-http-2.3.3.jar
• grizzly-http-server-2.3.3.jar
• grizzly-rcm-2.3.3.jar
• javax.websocket-api-1.0.jar
• tyrus-client-1.1.jar
• tyrus-container-grizzly-1.1.jar
• tyrus-core-1.1.jar
• tyrus-server-1.1.jar
• tyrus-spi-1.1.jar
• tyrus-websocket-core-1.1.jar

请记住客户端和服务器实现的这些依赖关系。