Java Springboot webSocket简单实现,调接口推送消息到客户端socket

后台一般作为webSocket服务器，前台作为client。真实场景可能是后台程序在运行时（满足一定条件时），去给client发数据。

 

再补充一个SpringBoot的client吧

1、依赖

        <dependency>
            <groupId>org.java-websocket</groupId>
            <artifactId>Java-WebSocket</artifactId>
            <version>1.5.2</version>
        </dependency>

2、client代码

package com.aircas.satellitemanagement.socket.client;

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

import java.net.URI;

public class WsClient extends WebSocketClient {

    public WsClient(URI serverUri) {
        super(serverUri);
    }

    @Override
    public void onOpen(ServerHandshake arg0) {
        System.out.println("握手成功");

    }

    @Override
    public void onClose(int arg0, String arg1, boolean arg2) {
        System.out.println("连接关闭");
    }

    @Override
    public void onError(Exception arg0) {
        System.out.println("发生错误");
    }

    @Override
    public void onMessage(String arg0) {
        System.out.println("收到消息" + arg0);
    }
}

package com.aircas.satellitemanagement.socket.client;

import org.java_websocket.enums.ReadyState;

import java.net.URI;

public class Client {
    // 根据实际websocket地址更改
    private static String url = "ws://localhost:9101/webSocket/TT";

    public static void main(String[] args) {
        try {
            WsClient myClient = new WsClient(new URI(url));
            myClient.connect();
            // 判断是否连接成功，未成功后面发送消息时会报错
            while (!myClient.getReadyState().equals(ReadyState.OPEN)) {
                System.out.println("连接中···请稍后");
                Thread.sleep(1000);
            }
            myClient.send("MyClient");
            System.out.println("发送成功");
            myClient.send("test1");
            myClient.send("test2");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}