Caused by: com.fasterxml.jackson.core.JsonParseException: Illegal character ((CTRL-CHAR, code 31)): only regular white space (\r, \n, \t) is allowed between tokens

微服务之间调用，A微服务用以下几种方式向B微服务发起请求，均报错
restTemplate.postForEntity(fullUrl, requestHttp, JSONObject.class);
restTemplate.postForEntity(fullUrl, requestHttp, String.class);
restTemplate.postForEntity(fullUrl, requestHttp, Object.class);

Caused by: com.fasterxml.jackson.core.JsonParseException: Illegal character ((CTRL-CHAR, code 31)): only regular white space (\r, \n, \t) is allowed between tokens
at [Source: (org.apache.servicecomb.foundation.vertx.stream.BufferInputStream); line: 1, column: 2]
at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:2337)
at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:710)
at com.fasterxml.jackson.core.base.ParserMinimalBase._throwInvalidSpace(ParserMinimalBase.java:688)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._skipWSOrEnd(UTF8StreamJsonParser.java:3012)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:724)
at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4684)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4586)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3601)
at org.apache.servicecomb.common.rest.codec.produce.ProduceJsonProcessor.doDecodeResponse(ProduceJsonProcessor.java:64)
at org.apache.servicecomb.common.rest.codec.produce.ProduceProcessor.decodeResponse(ProduceProcessor.java:76)
at org.apache.servicecomb.transport.rest.client.http.DefaultHttpClientFilter.extractResponse(DefaultHttpClientFilter.java:104)

Start by reproducing the inter-service request using the three RestTemplate calls shown, then trace response decoding through ProduceJsonProcessor.doDecodeResponse and DefaultHttpClientFilter.extractResponse. Confirm what response content produces the CTRL-CHAR 31 error and document or fix the behavior so the response is decoded successfully.

Written by the indexing model from the issue text.