案例管理，添加修改暂停优化，判断时间不能重叠

pom.xml

@@ -30,6 +30,7 @@
         <poi.version>3.17</poi.version>
         <velocity.version>1.7</velocity.version>
         <jwt.version>0.9.1</jwt.version>
+        <aliyun-oss.version>3.8.0</aliyun-oss.version>
     </properties>
 
     <!-- 依赖声明 -->
@@ -187,10 +188,18 @@
                 <artifactId>stdiet-common</artifactId>
                 <version>${stdiet.version}</version>
             </dependency>
-
         </dependencies>
     </dependencyManagement>
 
+    <dependencies>
+        <!-- OSS存储-->
+        <dependency>
+            <groupId>com.aliyun.oss</groupId>
+            <artifactId>aliyun-sdk-oss</artifactId>
+            <version>${aliyun-oss.version}</version>
+        </dependency>
+    </dependencies>
+
     <modules>
         <module>stdiet-admin</module>
         <module>stdiet-framework</module>