websocket简单demo_com.github.0xzhangke:websocketdemo-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_40524941/article/details/95357270

博客介绍了WebSocket开发相关内容，包含导入Maven依赖，给出两种客户端写法，还说明了服务端开发，创建MyWebSocketServer类并添加注解，实现onOpen等方法，适合学习WebSocket的新手。

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导入maven依赖

         <dependency>
            <groupId>org.java-websocket</groupId>
            <artifactId>Java-WebSocket</artifactId>
            <version>1.3.0</version>
         </dependency>

客户端写法 1:

import org.java_websocket.client.WebSocketClient;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.handshake.ServerHandshake;

import java.net.URI;
import java.net.URISyntaxException;

public class WebSocket {
    public static void main(String[] args) throws URISyntaxException {
        String url = "服务器地址";
        final WebSocketClient wc = new WebSocketClient(new URI(url), new Draft_17()) {
            @Override
            public void onOpen(ServerHandshake handshakedata) {
                send("18601");  
              
                
            }
            @Override
            public void onMessage(String message) {
                System.err.println(message);
               
             
                }
            }

            @Override
            public void onError(Exception ex) {
                System.err.println("客户端出错了");
            }

            @Override
            public void onClose(int code, String reason, boolean remote) {
                System.err.println("客户端关闭了连接");
            }
        };
        wc.connect();

    }
}

客户端写法2

import org.java_websocket.client.WebSocketClient;
import org.java_websocket.handshake.ServerHandshake;

import java.net.URI;

public class WebSocket extends WebSocketClient {

    public WebSocketConnect(URI serverURI) {
        super(serverURI);
    }

    public void onOpen(ServerHandshake serverHandshake) {
        
    }

    public void onMessage(String s) {
        System.out.println(s);
    }

    public void onClose(int i, String s, boolean b) {

    }

    public void onError(Exception e) {

    }
}

服务端:

创建一个WebSocket服务端类MyWebSocketServer，并在类前添加@ServerEndpoint(value = "/websocket")注解，@ServerEndpoint(value = "/websocket")注释端点表示将 WebSocket 服务端运行在 ws://[Server 端 IP 或域名]:[Server 端口]/项目名/websocket 的访问端点实现onOpen、onClose、onMessage、onError等方法

import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.server.ServerEndpoint;
import java.net.URI;

@ServerEndpoint("/websoccket")
public class WebSocketConnect  {

    @OnMessage
    public void onMessage(String messsage){
        System.out.println(messsage);
    }

    @OnOpen
    public void onOpen(){

    }
    
    @OnError
    public void onError(){

    }

    @OnClose
    public void onClose(){

    }
}

学习websocket萌新如有错误帮忙指出感谢