解决 Gateway 的 jar 打包后无法运行的问题

yudao-gateway/pom.xml

@@ -39,6 +39,11 @@
             <artifactId>spring-cloud-starter-gateway</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+        </dependency>
+
         <!-- RPC 远程调用相关 -->
         <dependency>
             <groupId>org.springframework.cloud</groupId>