[SCB-2131]fix review comment
diff --git a/demo/demo-jaxrs/jaxrs-client/src/main/java/org/apache/servicecomb/demo/jaxrs/client/TestQueryParamWithListSchema.java b/demo/demo-jaxrs/jaxrs-client/src/main/java/org/apache/servicecomb/demo/jaxrs/client/TestQueryParamWithListSchema.java
index 84ab80a..40c9b8d 100644
--- a/demo/demo-jaxrs/jaxrs-client/src/main/java/org/apache/servicecomb/demo/jaxrs/client/TestQueryParamWithListSchema.java
+++ b/demo/demo-jaxrs/jaxrs-client/src/main/java/org/apache/servicecomb/demo/jaxrs/client/TestQueryParamWithListSchema.java
@@ -61,16 +61,16 @@
   }
 
   private void testCSVRest() {
-    TestMgr.check("[]",
+    TestMgr.check("0:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListCSV?", String.class));
   }
 
   private void testSSV() {
-    TestMgr.check("[1, 2]",
+    TestMgr.check("2:[1, 2]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListSSV?queryList=1%202", String.class));
-    TestMgr.check("[, ]",
+    TestMgr.check("2:[, ]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListSSV?queryList=%20", String.class));
-    TestMgr.check("[]",
+    TestMgr.check("1:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListSSV?queryList=", String.class));
   }
 
@@ -80,17 +80,17 @@
   }
 
   private void testTSVRest() {
-    TestMgr.check("[]",
+    TestMgr.check("0:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListTSV?", String.class));
   }
 
   private void testTSV() {
-    TestMgr.check("[1, 2]",
+    TestMgr.check("2:[1, 2]",
         restTemplate
             .getForObject("cse://jaxrs/queryList/queryListTSV?queryList={1}", String.class, "1\t2"));
-    TestMgr.check("[, ]",
+    TestMgr.check("2:[, ]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListTSV?queryList={1}", String.class, "\t"));
-    TestMgr.check("[]",
+    TestMgr.check("1:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListTSV?queryList=", String.class));
   }
 
@@ -100,17 +100,17 @@
   }
 
   private void testPipesRest() {
-    TestMgr.check("[]",
+    TestMgr.check("0:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListPIPES?", String.class));
   }
 
   private void testPipes() {
-    TestMgr.check("[1, 2]",
+    TestMgr.check("2:[1, 2]",
         restTemplate
             .getForObject("cse://jaxrs/queryList/queryListPIPES?queryList={1}", String.class, "1|2"));
-    TestMgr.check("[, ]",
+    TestMgr.check("2:[, ]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListPIPES?queryList={1}", String.class, "|"));
-    TestMgr.check("[]",
+    TestMgr.check("1:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListPIPES?queryList=", String.class));
   }
 
@@ -120,16 +120,16 @@
   }
 
   private void testSSVRest() {
-    TestMgr.check("[]",
+    TestMgr.check("0:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListSSV?", String.class));
   }
 
   private void testCSV() {
-    TestMgr.check("[1, 2]",
+    TestMgr.check("2:[1, 2]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListCSV?queryList=1,2", String.class));
-    TestMgr.check("[, ]",
+    TestMgr.check("2:[, ]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListCSV?queryList=,", String.class));
-    TestMgr.check("[]",
+    TestMgr.check("1:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListCSV?queryList=", String.class));
   }
 
@@ -139,16 +139,16 @@
   }
 
   private void testMultiRest() {
-    TestMgr.check("[]",
+    TestMgr.check("0:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListMULTI?", String.class));
   }
 
   private void testMulti() {
-    TestMgr.check("[1, 2]",
+    TestMgr.check("2:[1, 2]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListMULTI?queryList=1&queryList=2", String.class));
-    TestMgr.check("[, ]",
+    TestMgr.check("2:[, ]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListMULTI?queryList=&queryList=", String.class));
-    TestMgr.check("[]",
+    TestMgr.check("1:[]",
         restTemplate.getForObject("cse://jaxrs/queryList/queryListMULTI?queryList=", String.class));
   }
 }
diff --git a/demo/demo-jaxrs/jaxrs-server/src/main/java/org/apache/servicecomb/demo/jaxrs/server/QueryParamWithListSchema.java b/demo/demo-jaxrs/jaxrs-server/src/main/java/org/apache/servicecomb/demo/jaxrs/server/QueryParamWithListSchema.java
index 1f0b10b..c1fcfd9 100644
--- a/demo/demo-jaxrs/jaxrs-server/src/main/java/org/apache/servicecomb/demo/jaxrs/server/QueryParamWithListSchema.java
+++ b/demo/demo-jaxrs/jaxrs-server/src/main/java/org/apache/servicecomb/demo/jaxrs/server/QueryParamWithListSchema.java
@@ -33,30 +33,30 @@
   @Path("queryListCSV")
   @GET
   public String queryListCSV(@ApiParam(collectionFormat = "csv") @QueryParam("queryList") List<String> queryList) {
-    return queryList == null ? "null" : queryList.toString();
+    return queryList == null ? "null" : queryList.size() + ":" + queryList.toString();
   }
 
   @Path("queryListSSV")
   @GET
   public String queryListSSV(@ApiParam(collectionFormat = "ssv") @QueryParam("queryList") List<String> queryList) {
-    return queryList == null ? "null" : queryList.toString();
+    return queryList == null ? "null" : queryList.size() + ":" + queryList.toString();
   }
 
   @Path("queryListTSV")
   @GET
   public String queryListTSV(@ApiParam(collectionFormat = "tsv") @QueryParam("queryList") List<String> queryList) {
-    return queryList == null ? "null" : queryList.toString();
+    return queryList == null ? "null" : queryList.size() + ":" + queryList.toString();
   }
 
   @Path("queryListPIPES")
   @GET
   public String queryListPIPES(@ApiParam(collectionFormat = "pipes") @QueryParam("queryList") List<String> queryList) {
-    return queryList == null ? "null" : queryList.toString();
+    return queryList == null ? "null" : queryList.size() + ":" + queryList.toString();
   }
 
   @Path("queryListMULTI")
   @GET
   public String queryListMULTI(@ApiParam(collectionFormat = "multi") @QueryParam("queryList") List<String> queryList) {
-    return queryList == null ? "null" : queryList.toString();
+    return queryList == null ? "null" : queryList.size() + ":" + queryList.toString();
   }
 }