引入guava工具包

pom.xml

@@ -35,6 +35,7 @@
         <velocity.version>2.3</velocity.version>
         <jwt.version>0.9.1</jwt.version>
         <skipTests>true</skipTests>
+        <guava.version>23.0</guava.version>
     </properties>
 
     <!-- 依赖声明 -->
@@ -165,6 +166,12 @@
                 <version>${kaptcha.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>com.google.guava</groupId>
+                <artifactId>guava</artifactId>
+                <version>${guava.version}</version>
+            </dependency>
+
             <!-- 定时任务-->
             <dependency>
                 <groupId>com.ruoyi</groupId>

ruoyi-common/pom.xml

@@ -162,6 +162,11 @@
             <version>4.5.2</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+        </dependency>
+
     </dependencies>
 
 </project>