是否可以更改响应主体的内容

Question

我正在尝试返回Json文件的内容。但是我想在将其发送到前端之前进行修改。我想在文件的开头和结尾添加“[”和“]”。我这样做是因为json文件有多个json根元素。

例如，提取结果，如图所示

 result = restTemplate.executeRequest(HttpMethod.GET, String.class);
//change Body and put it back in result

问题

是否可以更改响应主体并将其放回ResponseEntity？

源代码

public ResponseEntity<String> getScalityObject(String chainCode, String dataCenter, String path, String byteRange) {
    Map<String, Object> queryParams = new HashMap<>();
    if (dataCenter != null && !dataCenter.isEmpty()) {
        queryParams.put("dataCenter", dataCenter);
    }
    if (byteRange != null && !byteRange.isEmpty()) {
        queryParams.put("byteRange", byteRange);
    }
    String decodedStr = URLDecoder.decode(path);
    queryParams.put("path", decodedStr);

    reservationService.setContext(
            RESA_INTERNAL_SERVICE_NAME,
            queryParams,
            "/chains/{chainCode}/objects/file",
            chainCode);
    restTemplate.setServiceDefinition(reservationService);
    
    ResponseEntity<String> result;
    try {
        result = restTemplate.executeRequest(HttpMethod.GET, String.class);
        //Change responseBody here
        return result;
    } catch (IOException e) {
        e.printStackTrace();
        result = new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
    }
    return result;
}

public <T> ResponseEntity<T> executeRequest(HttpMethod method, Class<T> responseType) throws IOException {

        if (this.serviceDefinition == null) {
            throw new IllegalArgumentException("You haven't provided any service definition for this call. " +
                "Are you sure you called the right method before using this Amadeus Rest Template?");
        }

        // Resolve the URI
        URI url = this.serviceDefinition.getUriComponents().toUri();

        // Add the extra headers if necessary
        HttpHeaders headers = new HttpHeaders();
        if (this.serviceDefinition.getHeaders() != null) {
            for(Map.Entry<String,String> headerSet : this.serviceDefinition.getHeaders().entrySet()) {
                headers.put(headerSet.getKey(), Arrays.asList(headerSet.getValue()));
            }
        }
        HttpEntity entity = new HttpEntity(headers);
        ResponseExtractor<ResponseEntity<T>> responseExtractor = responseEntityExtractor(responseType);

        RequestCallback requestCallback = httpEntityCallback(entity, responseType);
        ClientHttpResponse response = null;
        try {
            ClientHttpRequest request = createRequest(url, method);
            if (requestCallback != null) {
                requestCallback.doWithRequest(request);
            }
            response = request.execute();
            return (responseExtractor != null ? responseExtractor.extractData(response) : null);
        }
        catch (IOException ex) {
            throw ex;
        }
        finally {
            if (response != null) {
                response.close();
            }
        }

    }

Answer 1

我能想到的一个方法是：

ResponseEntity<String> result = restTemplate.executeRequest(HttpMethod.GET, String.class);

StringBuilder builder = new StringBuilder(result.getBody());
... //do your transformation to stringbuilder reference.
result = ResponseEntity.status(ref.getStatusCode()).body(builder.toString());

如果要避免这种情况，另一种方法是从执行器请求返回字符串响应