Spring boot + Websocket
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1、添加配置类
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;
@Configuration
public class WebSocketConfig {
/**
* 注入ServerEndpointExporter,
* 这个bean会自动注册使用了@ServerEndpoint注解声明的Websocket endpoint
*/
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
2、添加WebSocket类
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArraySet;
@Component
@ServerEndpoint("/websocket/{shopId}")
public class WebSocket {
private static Logger logger = LoggerFactory.getLogger(WebSocket.class);
private Session session;
private static CopyOnWriteArraySet<WebSocket> webSockets = new CopyOnWriteArraySet<>();
private static Map<String, Session> sessionPool = new HashMap<>();
@OnOpen
public void onOpen(Session session, @PathParam(value = "shopId") String shopId) {
this.session = session;
webSockets.add(this);
sessionPool.put(shopId, session);
logger.info("有新的连接,总数为:{}", webSockets.size());
}
@OnClose
public void onClose() {
webSockets.remove(this);
logger.info("连接断开,总数为:{}", webSockets.size());
}
@OnMessage
public void onMessage(String message) {
logger.info("收到客户端消息:{}", message);
}
// 此为广播消息
public void sendAllMessage(String message) {
for (WebSocket webSocket : webSockets) {
System.out.println("【websocket消息】广播消息:" + message);
try {
webSocket.session.getAsyncRemote().sendText(message);
} catch (Exception e) {
logger.error("", e);
}
}
}
// 此为单点消息
public void sendOneMessage(String shopId, String message) {
Session session = sessionPool.get(shopId);
if (session != null) {
try {
session.getAsyncRemote().sendText(message);
} catch (Exception e) {
logger.error("", e);
}
}
}
}
3、添加测试类
import com.sgcc.gtfsamservice.componet.WebSocket;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("api")
public class TestController {
@Autowired
private WebSocket webSocket;
@RequestMapping("/sendAllWebSocket")
public String test() {
webSocket.sendAllMessage("hello");
return "多发!";
}
@RequestMapping("/sendOneWebSocket")
public String sendOneWebSocket() {
webSocket.sendOneMessage("channel001", "hello!");
return "单发";
}
}
4、前端Vue
export default {
name: ‘relationship‘,
data () {
return {
}
},
created () { // 页面创建生命周期函数
this.initWebSocket()
},
destroyed: function () { // 离开页面生命周期函数
this.websocketclose()
},
methods: {
initWebSocket: function () {
// ws等同http,wss等同https,其中ip为后端应用主机,port为后端启动所占用的端口
this.websock = new WebSocket(‘ws://ip:port/websocket/channel001‘)
this.websock.onopen = this.websocketonopen
this.websock.onerror = this.websocketonerror
this.websock.onmessage = this.websocketonmessage
this.websock.onclose = this.websocketclose
},
websocketonopen: function () {
console.log(‘WebSocket连接成功‘)
},
websocketonerror: function (e) {
console.log(‘WebSocket连接发生错误‘)
},
websocketonmessage: function (e) {
var da = JSON.parse(e.data)
console.log(da)
this.message = da
},
websocketclose: function (e) {
console.log(‘connection closed (‘ + e.code + ‘)‘)
},
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