新增依赖和修改配置

pom.xml

@@ -61,7 +61,19 @@
             <artifactId>pdfbox</artifactId>
             <version>2.0.21</version>
         </dependency>
-
+        
+        <!-- WebSocket 依赖 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-websocket</artifactId>
+        </dependency>
+        
+        <!-- Fastjson 依赖 -->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.83</version>
+        </dependency>
 
     </dependencies>
 

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