导入依赖

ruoyi-admin/pom.xml

@@ -81,6 +81,12 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.ruoyi</groupId>
+            <artifactId>ruoyi-App</artifactId>
+            <version>3.8.5</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>

ruoyi-admin/src/main/java/com/ruoyi/web/controller/app/MSGController.java

@@ -1,7 +1,7 @@
 package com.ruoyi.web.controller.app;
 
 
-//import com.aliyuncs.utils.IOUtils;
+import com.aliyuncs.utils.IOUtils;
 import com.ruoyi.app.common.R;
 import com.ruoyi.app.common.SessionContextUtils;
 import com.ruoyi.app.service.MSGService;