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Is It possible to change the content of the Body of a responseEntity

I am trying to return the content of a Json file. But I want to modify before sending it to the front end. I want to add "[" and "]" at the beginning and end of the file. I am doing that because the json file has multiple json root elements.
Like for example extract the result as illustrated in
result = restTemplate.executeRequest(HttpMethod.GET, String.class);
//change Body and put it back in result
Question
Is it possible to change the body of the response and put it back in ResponseEntity?
Source Code
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();
}
}
}

One of the way which I can think of is :
ResponseEntity<String> result = restTemplate.executeRequest(HttpMethod.GET, String.class);
StringBuilder builder = new StringBuilder(result.getBody());
... //do your transformation to stringbuilder reference.
result = ResponseEntity.status(result.getStatusCode()).body(builder.toString());
Another way if you want to avoid this is to return String response from your executeRequest & modify that response before creating ResponseEntity.

Try this:
Create your own HttpMessageConverter, implementing:
public interface HttpMessageConverter<T> {
// Indicates whether the given class can be read by this converter.
boolean canRead(Class<?> clazz, MediaType mediaType);
// Indicates whether the given class can be written by this converter.
boolean canWrite(Class<?> clazz, MediaType mediaType);
// Return the list of {#link MediaType} objects supported by this converter.
List<MediaType> getSupportedMediaTypes();
// Read an object of the given type form the given input message, and returns it.
T read(Class<? extends T> clazz, HttpInputMessage inputMessage)
throws IOException, HttpMessageNotReadableException;
// Write an given object to the given output message.
void write(T t, MediaType contentType, HttpOutputMessage outputMessage)
throws IOException, HttpMessageNotWritableException;
}
Register the custom converter into your restTemplate object:
String url = "url";
// Create a new RestTemplate instance
RestTemplate restTemplate = new RestTemplate();
// Add the String message converter
restTemplate.getMessageConverters().add(new YourConverter());
// Make the HTTP GET request, marshaling the response to a String
String result = restTemplate.getForObject(url, String.class);

HttpRequest in java with GSON and multiple elements

I'm trying to get the "symbol" of a JSON HttpRequest in Java. I want to use GSON of google but, I can't reach any value ... I'm always with a null value in my object... I know that the error are "stock.symbol" I certainly need to put some "node" before ... I'm lost ... so ...
here the code :
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create("https://yahoo-finance-low-latency.p.rapidapi.com/v6/finance/quote?symbols=AAPL&lang=en&region=CA"))
.header("x-rapidapi-key", "---")
.header("x-rapidapi-host", "***")
.method("GET", HttpRequest.BodyPublishers.noBody())
.build();
try {
HttpResponse<String> reponse = null;
reponse = client.send(request, HttpResponse.BodyHandlers.ofString());
System.out.print(reponse.body());
Gson gson = new Gson();
Stock stock = gson.fromJson(reponse.body(), Stock.class);
System.out.println("******************************************************");
System.out.println(stock.symbol + stock.displayName + stock.quoteType);
System.out.println("******************************************************");
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
here my output, you will be eable to see the answer from the api in JSON format :
{"quoteResponse":{"result":[{"language":"en-US","region":"CA","quoteType":"EQUITY","quoteSourceName":"Nasdaq Real Time Price","triggerable":true,"currency":"USD","firstTradeDateMilliseconds":345479400000,"priceHint":2,"postMarketChangePercent":-0.0956731,"postMarketTime":1621641596,"postMarketPrice":125.31,"postMarketChange":-0.120003,"regularMarketChange":-1.8799973,"regularMarketChangePercent":-1.4767083,"regularMarketTime":1621627203,"averageAnalystRating":"2.0 - Buy","tradeable":false,"esgPopulated":false,"marketState":"POSTPOST","regularMarketPrice":125.43,"regularMarketDayHigh":128.0,"regularMarketDayRange":"125.21 - 128.0","regularMarketDayLow":125.21,"regularMarketVolume":79152773,"regularMarketPreviousClose":127.31,"bid":125.37,"ask":125.37,"bidSize":12,"askSize":10,"fullExchangeName":"NasdaqGS","financialCurrency":"USD","regularMarketOpen":127.82,"averageDailyVolume3Month":103188411,"averageDailyVolume10Day":86685085,"fiftyTwoWeekLowChange":47.1575,"fiftyTwoWeekLowChangePercent":0.60247856,"fiftyTwoWeekRange":"78.2725 - 145.09","fiftyTwoWeekHighChange":-19.659996,"fiftyTwoWeekHighChangePercent":-0.13550209,"fiftyTwoWeekLow":78.2725,"fiftyTwoWeekHigh":145.09,"dividendDate":1620864000,"earningsTimestamp":1619627400,"earningsTimestampStart":1627469940,"earningsTimestampEnd":1627905600,"trailingAnnualDividendRate":0.82,"trailingPE":28.192854,"trailingAnnualDividendYield":0.006440971,"epsTrailingTwelveMonths":4.449,"epsForward":5.36,"epsCurrentYear":5.2,"priceEpsCurrentYear":24.121155,"sharesOutstanding":16687599616,"bookValue":4.146,"fiftyDayAverage":130.1347,"fiftyDayAverageChange":-4.7047043,"fiftyDayAverageChangePercent":-0.03615257,"twoHundredDayAverage":127.04788,"twoHundredDayAverageChange":-1.6178818,"twoHundredDayAverageChangePercent":-0.012734425,"marketCap":2093125599232,"forwardPE":23.40112,"priceToBook":30.253258,"sourceInterval":15,"exchangeDataDelayedBy":0,"exchange":"NMS","shortName":"Apple Inc.","longName":"Apple Inc.","messageBoardId":"finmb_24937","exchangeTimezoneName":"America/New_York","exchangeTimezoneShortName":"EDT","gmtOffSetMilliseconds":-14400000,"market":"us_market","displayName":"Apple","symbol":"AAPL"}],"error":null}}******************************************************
nullnullnull`
Process finished with exit code 0
public class Stock {
public String symbol, displayName, quoteType;}

We need to get to the JSON inside the result array:
Gson gson = new Gson();
JsonObject json = gson.fromJson(jsonStr, JsonObject.class)
.get("quoteResponse")
.getAsJsonObject()
.get("result")
.getAsJsonArray()
.get(0) // only one object in the array
.getAsJsonObject();
String symbol = json.get("symbol").getAsString();
String displayName = json.get("displayName").getAsString();
String quoteType = json.get("quoteType").getAsString();
Stock stock = new Stock(symbol, displayName, quoteType);

I cannot send an HTTP request (500 internal server error)

I am currently receiving the following error for the http request am sending. I am trying to send a JSON Array list to trigger a method in the receiving end so as it saves the list in its database.
The 500 Internal Server Error is a very general HTTP status code that means something has gone wrong on the website's server, but the server could not be more specific on what the exact problem is.
Websites phrase 500 errors in many ways but they're all basically saying the same thing: there's a general server issue going on right now.
Most of the time there isn't anything you can do but contact the website directly and then wait on them to fix it.
In the off chance there is a problem on your end, try clearing the cache and deleting any cookies from the site with the error.
Please find the error below:
org.springframework.web.client.HttpServerErrorException: 500 Internal Server
public static String FRONT_URL;
public static String BACK_URL;
public static final String REST_SYNC = "rest/sync";
public static final String REST_API = "rest/api";
private Logger log = Logger.getLogger(FrontSynchronizer.class);
static final Logger synclog = Logger.getLogger("sync");
ResourceBundle rb = ResourceBundle.getBundle("bundles.sync-application-resources", Locale.getDefault());
//method sending the request
public void syncApplications(List<SchemeApplication> accList) {
schemeApplicationDto=new SchemeApplicationDto();
FRONT_URL = rb.getString("sync.front.url").concat(REST_SYNC);
BACK_URL = rb.getString("sync.back.url").concat(REST_API);
JSONArray array = new JSONArray();
if (accList != null && accList.size() > 0) {
for (SchemeApplication student : accList) {
schemeApplicationDto.setId(student.getId());
schemeApplicationDto.setAccountID(student.getAccountID());
schemeApplicationDto.setNoOfPersonsEmployedLocal(student.getNoOfPersonsEmployedLocal());
schemeApplicationDto.setLocalmainclients(student.getLocalmainclients());
JSONObject studentJSON = new JSONObject(schemeApplicationDto);
array.put(studentJSON);
}
}
HttpHeaders headers = new HttpHeaders();
JSONObject object = new JSONObject();
object.put("array", array);
headers.setContentType(MediaType.APPLICATION_JSON);
RestTemplate restTemplate = this.createnewTemplate();
String url = BACK_URL.concat("/application");
HttpEntity<String> requestEntity = new HttpEntity<String>(object.toString(), headers);
ResponseEntity<Boolean> responseEntity = restTemplate.exchange(url, HttpMethod.POST, requestEntity,
Boolean.class);
if (responseEntity.getBody())
{
for(SchemeApplication scheme:accList) {
schemeApplicationService.getDao().delete(scheme);
}
}
}
public RestTemplate createnewTemplate() {
// RestTemplate restTemplate = new RestTemplate(clientHttpRequestFactory());
HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();
httpRequestFactory.setConnectTimeout(120000);
RestTemplate restTemplate = new RestTemplate(httpRequestFactory);
return restTemplate;
}
// method that needs to process the request
//The method is trying to send an Array list so as the receiving end can receive the list and save it in its database.
#RequestMapping(value = "application", method = RequestMethod.POST)
public Boolean getAllArchivedpplications(#RequestBody String schemeJson) {
List<SchemeApplication> accList = null;
try {
accList = new ArrayList<SchemeApplication>();
if (StringUtils.isNotEmpty(schemeJson)) {
JSONObject listObject = new JSONObject(schemeJson);
JSONArray entryArray = listObject.getJSONArray("array");
for (int i = 0; i < entryArray.length(); i++) {
JSONObject res = new JSONObject(entryArray.get(i).toString());
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
schemeApplication doc = mapper.readValue(res.toString(),
new TypeReference<schemeApplication>() {
});
accList.add(doc);
}
schemeService.getDao().save(accList); // Service.save accountlist;
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}

#RequestBody must work on an object.

Standard way to do this kind of work in two ways:
Form a class having class files with same name and structure with your json data you are sending and capture that data in by #RequestBody annotation
As you are sending data as String, send it as request param, and use #RequestParam instead of #RequestBody and parse the way you need to do things. For I think for this kind of arrayList of bulk data you are working with, option 1 will be better/feasible.
For details you can check here: #RequestBody and #ResponseBody annotations in Spring

Restlet clientResource post returns http error 415

I'm trying to post a JSON to some REST service, but I always end up with a HTTP Error 415: Unsupported Media Type.
The REST Documentation clearly notes I should use application/json, which I do. Surely I must be overlooking something.
public JSONObject fetchResponse() throws ResourceException, JSONException, IOException {
JRRequest jr = new JRRequest();
jr.setJql(jql);
jr.setMaxResults(Integer.parseInt(maxresults));
jr.setFields(fields);
Gson json = new Gson();
String payload = json.toJson(jr);
JSONObject jsObj = new JSONObject(getClientResource(restUri).post(payload,MediaType.APPLICATION_JSON).getText());
return jsObj;
}
private ClientResource getClientResource(String uri) {
ClientResource clientResource = new ClientResource(uri);
Application app = new Application();
clientResource.setChallengeResponse(ChallengeScheme.HTTP_BASIC,username, password);
return clientResource;
}

Okay, I found the solution. Instead of doing it all in one line, I tried this:
Representation rep = new StringRepresentation(payload, MediaType.APPLICATION_JSON);
JSONObject jsObj = new JSONObject(getClientResource(restUri).post(rep).getText());
And it works now!

How to send requests and receive responses to/from an Apache CXF-based service?

I have several servlets, which
take JSON-encoded requests as inputs,
process them and
return responses to the client as JSON-encoded objects.
Up to now I used Android as client (sample Android code see below).
Now I want to write a plain old Java program, which would send requests and receive the responses (do the same as the Android code). For this purpose I wrote a Java test (code see below, section Java code) and ran it.
At the client side I get this error:
21:43:38.930 [main] ERROR r.a.c.t.TestAcceptanceProcedure1 -
java.io.IOException: Server returned HTTP response code: 405 for URL: http://myserver/myapp/rest/GetUserIdService
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441) ~[na:1.6.0_23]
at testclient.TestAcceptanceProcedure1.test(TestAcceptanceProcedure1.java:47) ~[test-classes/:na]
In the server log, I see this message:
WARNING: No operation matching request path "/myapp/rest/GetUserIdService" is found, Relative Path: /, HTTP Method: GET, ContentType: */*, Accept: text/html,image/gif,image/jpeg,*/*,*/*;q=.2,. Please enable FINE/TRACE log level for more details
Question: How should I change my Java test to fix this error?
Note that the server is up and running (when I execute the Android code, it works).
Android code:
Sending the request and receiving the response:
final GetSimulationStatusRequest request = new GetSimulationStatusRequest();
final String json = Utils.convertToJson(request, getClass());
final String serverUrl = Utils.getServerUrl(this, "GetSimulationStatusService");
final IGetSimulationStatusAsyncTask getSimulationStatusTask =
asyncTaskFactory.createGetSimulationStatusAsyncTask(getWebServiceHelper());
Utils.setRequestAndServerUrl(json, serverUrl, getSimulationStatusTask);
final GetSimulationStatusResponse simulationStatusReponse =
getSimulationStatusTask.get();
Utils.convertToJson:
public static String convertToJson(final Object aRequest, Class<? extends Activity> aClass) {
final ObjectMapper mapper = new ObjectMapper();
String json = null;
try {
json = mapper.writeValueAsString(aRequest);
} catch (final JsonProcessingException exception) {
Log.e(aClass.getSimpleName(), exception.getLocalizedMessage(),
exception);
}
return json;
}
Utils.setRequestAndServerUrl:
public static void setRequestAndServerUrl(final String aJson,
final String aServerUrl, final IAsyncTask aTask) {
aTask.addNameValuePair("request", aJson);
aTask.sendRequest(new String[] { aServerUrl });
}
GetSimulationStatusAsyncTask:
public class GetSimulationStatusAsyncTask
extends AsyncTask<String, String, GetSimulationStatusResponse>
implements IGetSimulationStatusAsyncTask {
private static final String TAG = GetSimulationStatusAsyncTask.class.getSimpleName();
private IWebServiceTaskHelper helper;
private ICcpResponseParser<GetSimulationStatusResponse> responseParser =
new CcpResponseParser<GetSimulationStatusResponse>();
public GetSimulationStatusAsyncTask(final IWebServiceTaskHelper aHelper) {
helper = aHelper;
}
#Override
public void addNameValuePair(final String aName, final String aValue) {
helper.addNameValuePair(aName, aValue);
}
#Override
protected GetSimulationStatusResponse doInBackground(String... aArgs) {
return (GetSimulationStatusResponse)Utils.processResponse(this.helper, TAG, responseParser,
GetSimulationStatusResponse.class, aArgs);
}
#Override
public void sendRequest(final String[] aArgs) {
execute(aArgs);
}
}
Java code:
#Test
public void test() throws JsonProcessingException, MalformedURLException {
final GetUserIdRequest request = new GetUserIdRequest();
request.setDeviceId("PC1");
final String requestAsString = convertToJson(request);
final String serverUrl = getServerUrl("GetUserIdService");
final URL url = new URL(serverUrl);
HttpURLConnection connection = null;
InputStream inputStream = null;
try {
connection = (HttpURLConnection) url.openConnection();
connection.addRequestProperty("request", requestAsString);
connection.connect();
inputStream = connection.getInputStream();
final String responseAsString = IOUtils.toString(inputStream);
LOGGER.debug("responseAsString: " + responseAsString);
} catch (final IOException exception) {
LOGGER.error("", exception);
}
finally
{
IOUtils.closeQuietly(inputStream);
}
}
private String convertToJson(final GetUserIdRequest aRequest) throws JsonProcessingException {
final ObjectMapper mapper = new ObjectMapper();
return mapper.writeValueAsString(aRequest);
}
private String getServerUrl(final String aServiceName)
{
return "http://myserver.com/myapp/rest/" + aServiceName;
}
Update 1 (09.10.2013 12:23 MSK):
#Path("/GetSimulationStatusService")
public class GetSimulationStatusService extends BaseCcpService {
private GetSimulationStatusRequestParser requestParser =
new GetSimulationStatusRequestParser();
#POST
#Produces("text/plain")
public String getSimulationStatus(#FormParam("request") final String aRequestJson)
throws JsonProcessingException
{
final GetSimulationStatusRequest request = requestParser.convert(aRequestJson);
final GetSimulationStatusResponse response = new GetSimulationStatusResponse();
response.setRequestId(request.getId());
response.setCycle(getPersistence().getCurrentCycle(request.getUserId()));
response.setLabourForce(getPersistence().getLabourForceSimulationParameter(
request.getUserId()));
return getObjectMapper().writeValueAsString(response);
}
}
Update 2 (09.10.2013 20:48 MSK): When I change the code like shown below, I get 500 HTTP response. At the server side, the aRequest argument of the method GetUserIdService.getUserId is null.
connection = (HttpURLConnection) url.openConnection();
connection.addRequestProperty("request", requestAsString);
connection.setRequestMethod("POST"); // Added this line
connection.connect();
Update 3 (09.10.2013 23:15): This one works:
#Test
public void test() throws JsonProcessingException, MalformedURLException
{
final GetUserIdRequest request = new GetUserIdRequest();
request.setDeviceId("PC1");
final String requestAsString = convertToJson(request);
final String serverUrl = getServerUrl("GetUserIdService");
final URL url = new URL(serverUrl);
HttpURLConnection connection = null;
InputStream inputStream = null;
OutputStream outputStream = null;
try {
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.connect();
outputStream = connection.getOutputStream();
IOUtils.write("request=" + requestAsString, outputStream);
inputStream = connection.getInputStream();
final String responseAsString = IOUtils.toString(inputStream);
LOGGER.debug("responseAsString: " + responseAsString);
} catch (final IOException exception) {
LOGGER.error("", exception);
}
finally
{
IOUtils.closeQuietly(inputStream);
IOUtils.closeQuietly(outputStream);
}
}

The 405 HTTP error code means that given method (GET) is not supported by the endpoint. Probably instead of GET request you want to send POST. I don't know what kind of request is sent by Android client.
Do you have endpoint specification/documentation?
Here you'll find information how to invoke POST using plain Java API. If you can use external libraries in your test then it can be achieved a lot easier using RESTEasy.