liubao68 commented on issue #2081:
URL:
https://github.com/apache/servicecomb-java-chassis/issues/2081#issuecomment-747153718
你能发下你的代码是怎么写的吗？前面的讨论和例子，实际上都说明了你的用法不会返回 new String[]{null}。 我测试也没发现这种情况。
可以按照下面格式反馈下：
业务代码：
```
@Path("queryListCSV")
@GET
public String queryListCSV(@ApiParam(collectionFormat = "csv")
@QueryParam("queryList") List<String> queryList) {
return queryList == null ? "null" : queryList.size() + ":" +
queryList.toString();
}
```
浏览器请求：
```
http://localhost:8080/queryList/queryListCSV?queryList=
```
预期结果:
```
"1:[]"
```
浏览器请求：
```
http://localhost:8080/queryList/queryListCSV
```
预期结果:
```
"0:[]"
```
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