diff --git a/solution/solution-fc-sts-token/code-example/java/pom.xml b/solution/solution-fc-sts-token/code-example/java/pom.xml
index fac4bcb..6daf112 100644
--- a/solution/solution-fc-sts-token/code-example/java/pom.xml
+++ b/solution/solution-fc-sts-token/code-example/java/pom.xml
@@ -44,7 +44,7 @@
         <dependency>
             <groupId>com.aliyun.oss</groupId>
             <artifactId>aliyun-sdk-oss</artifactId>
-            <version>3.17.2</version>
+            <version>3.17.4</version>
         </dependency>
         <!--sls-sdk-->
         <dependency>
diff --git a/solution/solution-fc-sts-token/code-example/java/src/main/java/org/example/oss_sdk/App.java b/solution/solution-fc-sts-token/code-example/java/src/main/java/org/example/oss_sdk/App.java
index 816d2cf..d55ac88 100644
--- a/solution/solution-fc-sts-token/code-example/java/src/main/java/org/example/oss_sdk/App.java
+++ b/solution/solution-fc-sts-token/code-example/java/src/main/java/org/example/oss_sdk/App.java
@@ -8,12 +8,14 @@
 import com.alibaba.fastjson2.JSON;
 import com.aliyun.fc.runtime.Context;
 import com.aliyun.fc.runtime.StreamRequestHandler;
+import com.aliyun.oss.ClientBuilderConfiguration;
 import com.aliyun.oss.OSS;
 import com.aliyun.oss.OSSClientBuilder;
 import com.aliyun.oss.common.auth.CredentialsProvider;
 import com.aliyun.oss.common.auth.DefaultCredentialProvider;
 import com.aliyun.oss.common.auth.Credentials;
 import com.aliyun.oss.common.auth.DefaultCredentials;
+import com.aliyun.oss.common.comm.SignVersion;
 import com.aliyun.oss.model.Bucket;
 
 public class App implements StreamRequestHandler {
@@ -28,10 +30,21 @@ public void handleRequest(InputStream inputStream, OutputStream outputStream, Co
 
         CredentialsProvider credentialsProvider = new DefaultCredentialProvider(ossCreds);
 
-        // OSS endpoint，以杭州为例
+        // Bucket所在地域对应的Endpoint。以华东1（杭州）为例。
         String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
-
-        OSS ossClient = new OSSClientBuilder().build(endpoint, credentialsProvider);
+        // Endpoint对应的Region信息，例如cn-hangzhou。
+        String region = "cn-hangzhou";
+        // 建议使用更安全的V4签名算法，则初始化时需要加入endpoint对应的region信息，同时声明SignVersion.V4
+        // OSS Java SDK 3.17.4及以上版本支持V4签名。
+        ClientBuilderConfiguration configuration = new ClientBuilderConfiguration();
+        configuration.setSignatureVersion(SignVersion.V4);
+
+        OSS ossClient = OSSClientBuilder.create()
+            .endpoint(endpoint)
+            .credentialsProvider(credentialsProvider)
+            .clientConfiguration(configuration)
+            .region(region)
+            .build();
 
         // 调用OpenAPI
         List<Bucket> buckets = ossClient.listBuckets();