CODEWITHSUNDEEP
javawebsocketglassfish
Mohammad Siavashi
Mohammad Siavashi

Reputation: 1262

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

im new to WebSockets . for start learning i followed this tutorial . and simply copied the ClientEndpoint and ServerEndpoint and deployed the server with tyrus .

but when i try to run the server it will throw this error :

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

here is the deploy code ( i've commented the line which i get error on ) :

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();
        }
    }
}

here is the server code :

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));
    }
}

i'd appreciate any help :)

Upvotes: 2

Views: 2620

Answers (1)

bishoybasily
bishoybasily

Reputation: 46

it seems to be a dependencies issue,

if you are a maven user:

<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>

or load the following jars:

  • 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

please keep in mind these dependencies for both client and server implementations.

Upvotes: 2

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