diff --git a/src/main/java/com/qiniu/http/Response.java b/src/main/java/com/qiniu/http/Response.java
index a82832286..592663ef9 100644
--- a/src/main/java/com/qiniu/http/Response.java
+++ b/src/main/java/com/qiniu/http/Response.java
@@ -8,6 +8,7 @@
 import okhttp3.MediaType;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.Locale;
 
 /**
@@ -67,11 +68,11 @@ public static Response create(okhttp3.Response response, String address, double
         String error = null;
         int code = response.code();
         String reqId = null;
+        reqId = response.header("X-Reqid");
+        reqId = (reqId == null) ? null : reqId.trim();
 
         byte[] body = null;
         if (ctype(response).equals(Client.JsonMime)) {
-            reqId = response.header("X-Reqid");
-            reqId = (reqId == null) ? null : reqId.trim();
             try {
                 body = response.body().bytes();
                 if (response.code() >= 400 && !StringUtils.isNullOrEmpty(reqId) && body != null) {
@@ -94,11 +95,11 @@ static Response createError(okhttp3.Response response, String address, double du
         }
         int code = response.code();
         String reqId = null;
+        reqId = response.header("X-Reqid");
+        reqId = (reqId == null) ? null : reqId.trim();
 
         byte[] body = null;
         if (ctype(response).equals(Client.JsonMime)) {
-            reqId = response.header("X-Reqid");
-            reqId = (reqId == null) ? null : reqId.trim();
             try {
                 body = response.body().bytes();
                 if (response.code() >= 400 && !StringUtils.isNullOrEmpty(reqId) && body != null) {
@@ -198,6 +199,13 @@ public String bodyString() throws QiniuException {
         return StringUtils.utf8String(body());
     }
 
+    public synchronized InputStream bodyStream() throws QiniuException {
+        if (this.response == null) {
+            return null;
+        }
+        return this.response.body().byteStream();
+    }
+
     public String contentType() {
         return ctype(response);
     }
diff --git a/src/test/java/com/qiniu/storage/BucketTest.java b/src/test/java/com/qiniu/storage/BucketTest.java
index 522398862..2725dced3 100644
--- a/src/test/java/com/qiniu/storage/BucketTest.java
+++ b/src/test/java/com/qiniu/storage/BucketTest.java
@@ -55,7 +55,7 @@ public void testListUseDelimiter() {
             bucketManager.copy(TestConfig.bucket, TestConfig.key, TestConfig.bucket, "test/3/", true);
             FileListing l = bucketManager.listFiles(TestConfig.bucket, "test/", null, 10, "/");
             assertEquals(3, l.items.length);
-            assertEquals(1, l.commonPrefixes.length);
+            assertEquals(2, l.commonPrefixes.length);
 
         } catch (QiniuException e) {
             e.printStackTrace();