[GitHub] [servicecomb-java-chassis] wujimin commented on issue #2130: java.lang.IllegalStateException: not allow complex type for query parameter, type=java.util.List.

[GitBox <gi...@apache.org>]

wujimin commented on issue #2130:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2130#issuecomment-744140250


   `List<String>`这种是合法的  
   但是`List<User>`这种复杂类型是不可以的，没办法编码，并且这些复杂类型在url上传输，可能还涉及敏感信息泄漏的问题    
     
   如果服务自行评估，不存在信息泄漏，可以尝试使用2.1.3版本中新增加的query参数json编解码功能  
   （增加这个功能仅仅为了兼容某些系统的陈旧接口，没有特殊情况，不建议使用）  
   ```java
     @GetMapping("queryArrJSON")
     public String queryArrJSON(@ApiParam(collectionFormat = "json") @RequestParam("queryArr") String[] queryArr) {
       return Arrays.toString(queryArr) + queryArr.length;
     }
   ```  
   https://github.com/apache/servicecomb-java-chassis/blob/master/integration-tests/it-producer/src/main/java/org/apache/servicecomb/it/schema/DataTypeSpringmvcSchema.java  
     
   如果还需要其他query codec，可以自行实现自己的QueryCodec 


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