1. fix response get redid logic

2. fix failed tests

Author: jemygraw

src/main/java/com/qiniu/http/Response.java

@@ -68,11 +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) {
@@ -95,11 +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) {

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();