我正在尝试转换下面的JSON：

发件人：

{
  "id": 123,
  "name": {
    "firstName": "shiva",
    "lastName": "kumar"
  },
  "dateOfBirth": "11/09/2012",
  "emailId": "mymail@gmail.com",
  "address": {
    "addressLine1": "blr",
    "addressLine2": "KA"
  },
  "salary": 12334
}

收件人：

{
  "id": 123,
  "email": "mymail@gmail.com",
  "salary": 12334,
  "fullname": {
    "firstName": "shiva",
    "lastName": "kumar"
  },
  "fullAdress": "blr KA"
}

**代码：**以下代码仅返回null。

private JSONObject tranformRequest(String json, String specFile){
    
            URI uri = Thread.currentThread().getContextClassLoader().getResource(specFile).toURI();
            String jsonSpec = Files.readAllLines(Paths.get(uri)).stream().collect(Collectors.joining());
            JSONArray jsonArray = new JSONArray(jsonSpec);
            List<Map<String, Object>> list = new ArrayList<>();
            for(int i = 0 ; i < jsonArray.length();i++){
                list.add(jsonArray.getJSONObject(i).toMap());
            }
            Chainr chainr = Chainr.fromSpec(list);//  JsonUtils.classpathToList( "/path/to/chainr/spec.json" );
    
            Object output = chainr.transform( json );
    
            return (JSONObject) output;
        }

pom.xml

         <dependency>
            <groupId>com.bazaarvoice.jolt</groupId>
            <artifactId>jolt-core</artifactId>
            <version>0.1.7</version>
        </dependency>

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