新增依赖和修改配置

src/main/resources/application.properties

@@ -1,6 +1,7 @@
 spring.application.name=goeingPrintServer
 server.port=9090
 print.websocket.url=ws://127.0.0.1:8080/print-websocket
+#print.websocket.url=ws://3.144.140.114:8080/print-websocket
 print.printer.id=123456
 print.websocket.apiKey=519883ab-3677-ce4b-59ba-7263870d0a26