diff --git a/community-service/pom.xml b/community-service/pom.xml
index c9a1702924f2473850afd0467ba6110db90f8c9a..920540c26c7eb9e045628a60d04d601db99c4a25 100644
--- a/community-service/pom.xml
+++ b/community-service/pom.xml
@@ -18,6 +18,11 @@
             <artifactId>community-api</artifactId>
         </dependency>
 
+<!--        <dependency>-->
+<!--            <groupId>com.tanpu</groupId>-->
+<!--            <artifactId>tanpu-biz-common</artifactId>-->
+<!--        </dependency>-->
+
         <dependency>
             <groupId>com.baomidou</groupId>
             <artifactId>mybatis-plus-boot-starter</artifactId>
diff --git a/community-service/src/main/java/com/tanpu/community/util/BizUtils.java b/community-service/src/main/java/com/tanpu/community/util/BizUtils.java
index 59d59037e76c38ed9a90f99f067aa30b394f7466..e885eccfc9a17ef6dfdffc7751f7b88a54d33e0c 100644
--- a/community-service/src/main/java/com/tanpu/community/util/BizUtils.java
+++ b/community-service/src/main/java/com/tanpu/community/util/BizUtils.java
@@ -2,6 +2,7 @@ package com.tanpu.community.util;
 
 import com.tanpu.community.api.beans.qo.ThemeContentQo;
 import com.tanpu.community.api.beans.qo.ThemeQo;
+import org.apache.commons.codec.binary.Base64;
 import com.tanpu.community.api.enums.RelTypeEnum;
 
 import java.util.ArrayList;
@@ -46,8 +47,13 @@ public class BizUtils {
     }
 
     public static void main(String[] args) {
-        System.out.println(formatCountNumber(110400));
-        System.out.println(formatCountNumber(111100));
-        System.out.println(formatCountNumber(1000));
+        String sk = "59V9ke9txaIFzWxHFKTb1eoOOpmKpJ";
+        String policy = "{\"expiration\":\"2021-07-30T12:00:00.000Z\",\"conditions\":[[\"content-length-range\",0,1024*1024*1024]]}";
+        String encodePolicy = new String(Base64.encodeBase64(policy.getBytes()));
+
+        String sign = com.aliyun.oss.common.auth.ServiceSignature.create().computeSignature(sk, encodePolicy);
+
+        System.out.println(encodePolicy);
+        System.out.println(sign);
     }
 }
diff --git a/pom.xml b/pom.xml
index e8fc1a7b07ce16d75c0537b52ea147ab9e72984b..8347fd16cbea99cf3ddb870a83957291af858cac 100644
--- a/pom.xml
+++ b/pom.xml
@@ -69,6 +69,12 @@
                 <version>${project.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>com.tanpu</groupId>
+                <artifactId>tanpu-biz-common</artifactId>
+                <version>1.0.0-SNAPSHOT</version>
+            </dependency>
+
             <dependency>
                 <groupId>com.tanpu</groupId>
                 <artifactId>common</artifactId>