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WebSocket Client Class Object Information
How to get WebSocket Client object class information? I am using the Java EE 2 SDK distribution package.
✍: FYIcenter.com
If you are using the Java EE 2 SDK distribution package, you can follow this tutorial to get WebSocket Client object class information:
1. Write a test Java class annotated as @ClientEndpoint:
@ClientEndpoint public class WebSocketClassInfo {
2. Create a WebSocketContainer instance from the ContainerProvider class:
WebSocketContainer c = ContainerProvider.getWebSocketContainer();
3. Create a Session instance by calling connectToServer() on the WebSocketContainer instance with a working WebSocket server URI:
URI u = new URI("wss://echo.websocket.org"); Session s = c.connectToServer(WebSocketClassInfo.class, u);
4. Print out object class information to see what the implementation classes of the WebSocket API:
System.out.println(" URI: "+u.getClass().getName()); System.out.println(" Container: "+c.getClass().getName()); System.out.println(" Session: "+s.getClass().getName());
Here is the entir test program, WebSocketClassInfo.java:
// Copyright (c) 2016 FYIcenter.com import java.net.URI; import javax.websocket.ClientEndpoint; import javax.websocket.ContainerProvider; import javax.websocket.Session; import javax.websocket.WebSocketContainer; @ClientEndpoint public class WebSocketClassInfo { public static void main(String[] args) throws Exception { WebSocketContainer c = ContainerProvider.getWebSocketContainer(); URI u = new URI("wss://echo.websocket.org"); Session s = c.connectToServer(WebSocketClassInfo.class, u); System.out.println("WebSocket class info:"); System.out.println(" URI: "+u.getClass().getName()); System.out.println(" Container: "+c.getClass().getName()); System.out.println(" Session: "+s.getClass().getName()); } }
You can compile and run the above example in a command window with Java SE JDK 8 and the tyrus-standalone-client.jar from Java EE 7 SDK:
>\fyicenter\jdk-1.8.0\bin\javac -cp \fyicenter\glassfish4\mq\lib\tyrus-standalone-client.jar WebSocketClassInfo.java >\fyicenter\jdk-1.8.0\bin\java -cp .;\fyicenter\glassfish4\mq\lib\tyrus-standalone-client.jar WebSocketClassInfo WebSocket class info: URI: java.net.URI Container: org.glassfish.tyrus.client.ClientManager Session: org.glassfish.tyrus.core.TyrusSession
⇒ WebSocketEchoClient.java - WebSocket Echo Client
⇐ Using WebSocket API in Java Programs
2018-01-16, 1155🔥, 0💬
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