2- Compare those headers with the ones used by RestTemplate Jul 4, 2019 · As you might have guessed getForEntity and postForEntity methods have been extracted and RestTemplate is instantiated within – doing its job undercover. class); UPDATE: Check this link. You can user HttpEntity,T not JSONObject but POJO type,LIKE: HttpEntity<Foo> request = new HttpEntity<>(new Foo("bar")); ReturnType result = restTemplate. May 26, 2015 · If you get an empty response, the String value will be empty. Request is ok- 200. class); Nov 3, 2016 · RestTemplate发送请求并携带header信息. 4. The other noticeable difference is that the exchange () method is generic, meaning it can be used for any HTTP method. POST, request, String. postForEntity(endpoint, request, Response. You can try this by implementing StringHttpMessageConverter as below: Mar 31, 2022 · As briefly mentioned in the beginning RestTemplate is a higher-level construct which makes use of a lower-level HTTP client. Jan 27, 2020 · @Autowired @Qualifier("myRestTemplate") private RestTemplate restTemplate; Keep in mind you can still use the restTemplate object as usual, setting headers and etc, but the Bearer header will always be overridden with "token" because the interceptors apply right before the request is made. Convenient alternative of RestTemplate that is suitable for integration tests. java. That's why return personRepository. December 29, 2021. apache. Lesiak. TestRestTemplate is fault-tolerant. Unable to pass my DTO object as mentioned. assertEquals("foo", entity. Map map = new HashMap<String, String>(); May 10, 2017 · Assert. class) public class PostDataTest {. Feb 19, 2024 · Conclusion. It should be successful. postForEntity method example. Spring Boot Test. APPLICATION_JSON)); return new HttpEntity<>("parameters", headers); } But it would actually be great to be able to set that once and for all during the bean initialization, and directly use the getforObject method instead of exchange. Spring's central class for synchronous client-side HTTP access. class); to see what you are receiving exactly. The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The postForEntity method returns instance of ResponseEntity using Mar 17, 2024 · We can implement this by using the postForLocation method: HttpEntity<String> request = new HttpEntity <String>(personJsonObject. Here is the code which worked for me Sep 22, 2016 · In order to fix this, find out which content-type (media type) the server expects, set a header in your restTemplate object that sets content-type:application/json (replace application/json with whatever the server expects). // 'restTemplate' below has been @Autowired prior to this. refer to baeldung. HttpHeaders headers = new HttpHeaders(); headers. . GET, entity, String. It simplifies communication with HTTP servers, and enforces RESTful principles. We are using the code base of Spring boot REST example. You could have a setRestTemplate () method on your object, and you could use that to set the restTemplate: myTestObject. setInterceptors(new LinkedList<>(new MyTokenHeaderAddingInterceptor())); This would save you having to remember to send the header for each request. util. mock(Controller. postForEntity(url, new HttpEntity<>(xml, HEADERS), String. Jan 28, 2022 · January 28, 2022. Helpful tip. In PHP it's fine but i really don't understand how to do in Java with RestTemplate. MultiValueMap<String, Object> bodyMap = new LinkedMultiValueMap<>(); ByteArrayResource Nov 7, 2022 · i have below resttempalte which invokes rest controller of another service. 3. Normally when calling GET, we can use one of the simplified methods in RestTemplate, such as: getForObject (URI url, Class<T> responseType) This sends a request to the specified URI using the GET verb, and converts the response body into the requested Java type. When this header is set, RestTemplate automatically marshals the file data along with some metadata. postForObject(url, entity, String. exchange(url, HttpMethod. Apr 12, 2018 · But how can I let RestTemplate read and deserialize the response JSON even in case of HTTP 500. Open the Network tab of the Inspect Element tool to inspect the headers of your HTTP request. All other questions address how to handle HTTP 500, at max read the response-body. class); In a GET request, you'd usually not send a body (it's allowed, but it doesn't serve any purpose). postForEntity(uri, request, responseType) the responseEntity only contains 3 headers ( "date", "content-type", "content-length") Is there something about non-standard headers that doesn't work with postForEntity? And if so what is the fix? Jan 5, 2010 · With Spring-boot 1. Mar 28, 2017 · I call Rest API using RestTemplate. 0, the non-blocking, reactive org. generatePersonList(person); In client side if I call the service with this code: I can't use the p object as List<Person>, it will become a LinkedHashList. commons. Two variants take a String URI as first argument (eg. Also, make sure the request is sent in the correct format (if we're talking about json you need to have the jackson Jan 17, 2023 · In conclusion, RestTemplate is a powerful tool for making HTTP requests in Spring Boot. Jan 23, 2024 · 1. body as null. Description copied from interface: AsyncRestOperations. This article explores the Spring Boot TestRestTemplate. It can be treated as a follow-up of The Guide to RestTemplate, which we firmly recommend to read before focusing on TestRestTemplate. The way to add headers without wiring the RestTemplate differently is to use the exchange or execute methods directly. Handling Character Encoding in JSON POST Request. The webservice i'm having access return a json with informations about the POST ACTION. ConnectException. A sample code is shown as follows: HttpHeaders headers = new HttpHeaders(); Aug 4, 2017 · 1. ResponseEntity<String> authenticateResponse = restTemplate. postForEntity("my yrl", listDTORequest, MYDTOOTWO. Specified by: postForLocation in interface RestOperations Parameters: url - the URL request - the Object to be POSTed, may be null Returns: the value for the Location header Throws: Nov 2, 2021 · Spring Boot で外部の API に接続するには、 RestTemplate を使用します。. is also a high-level API, which in turn is based on an HTTP client. In this post request test example, we will be sending request body along with request headers. (it could as well be any other header, also multiple ones). On the server side, define a multipartResolver bean in your app context: @Bean. 3): As kaybee99 mentioned in his answer postForEntity method signature got changed. class); String responseBody = (String)rsp. A TestRestTemplate can optionally carry Basic authentication headers. setAccept(Collections. @Override. You would then set this on the RestTemplate: restTemplate. encode(plainCredsBytes, Base64. APPLICATION_JSON)); HttpEntity<String> httpEntity = new HttpEntity<>("some body", headers); restTemplate. Just press control+shift+T to open the type searcher, and type RestClientException. String reqBodyData = new ObjectMapper(). Spring 5. Like Spring JdbcTemplate, RestTemplate. class); Jan 11, 2019 · Mockito is saying you can't use argument matchers (in your case Mockito. Nov 9, 2019 · GET Request with Parameters and Headers. You can stub your mock to simulate its behavior: // import static org. Note: by default the RestTemplate relies on standard JDK For each of these HTTP methods, there are three corresponding Java methods in the RestTemplate . binary. NOTE: As of 5. TrustStrategy acceptingTrustStrategy = new TrustStrategy() {. This header typically indicates where the new resource is stored. There is the corresponding getForObject methods that are the HTTP GET equivalents of postForObject, but they doesn't appear to fulfil your requirements of "GET with headers", as there is no way to specify headers on any of the calls. postForEntity(url, entity, String. The Spring Framework provides the following choices for making calls to REST endpoints: RestClient - synchronous client with a fluent API. I managed to send a correct request to this endpoint by the following code: @Override. Make sure, you have spring-boot-starter-test dependency in your project to get access to TestRestTemplate class in runtime. postForObject() mapping cannot access element 0 Getting exception org. postForObject() method example. It allows you to easily consume RESTful web services from Android applications. Use String. May 18, 2022 · im working ina spring project and using restemplate to call POST API that take a List of DTOOne And return a List of DTOTWO. getBody(); Object response=mapper. setRestTemplate(restTemplate); Mocks will never just call the original method, so if that's happening you can be pretty sure your actual headers. postForEntity () By Arvind Rai, April 09, 2020. APPLICATION_JSON); String result = restTemplate. DEFAULT); May 26, 2018 · Another workaround, if you don't need the ResponseEntity object itself, but only the result object, you can do something like. Next, we’re going to have a quick look at using an OPTIONS request and exploring the allowed operations on a specific URI using this kind of request; the API is optionsForAllow: Set<HttpMethod> optionsForAllow = restTemplate. RestTemplate template = new RestTemplate(); HttpEntity<String> response = template. The POST API is given below. Overview. Feb 7, 2020 at 20:34. APPLICATIO Feb 12, 2015 · Alternatively you could implement a ClientHttpRequestInterceptor which would append the token header to each request. POST) So either you remove your argument matchers or you add an argument matcher to your raw values. This was verified if you remove the body of the json request in postman. I had to point out that if you do not want to use the org. Synchronous client to perform HTTP requests, exposing a simple, template method API over underlying HTTP client libraries such as the JDK HttpURLConnection, Apache HttpComponents, and others. org. It exposes a simple and easy-to-use template method API for sending an HTTP request and handling the HTTP response. The following code illustrates the attempt and Feb 23, 2022 · restTemplate. postForObject() is invoked with the correct parameters. So for GETs, this works great: HttpAuthentication httpAuthentication = new HttpBasicAuthentication("username", "password"); HttpHeaders May 11, 2024 · 5. This document explains how to use the RestTemplate class, configure message converters, handle exceptions, and customize requests and responses. exchange() method and its overloads need a RequestEntity<T> or its parent HttpEntity<T> object. class); // convert the response body to a simple array, not Collection. Starting with Spring 5, the RestTemplate class is in maintenance mode. If query parameter contains parenthesis, e. TestRestTemplate can be considered as an attractive alternative of RestTemplate. I used this to verify that a JSON string was being returned, but that indeed, the content type is text/plain. client Class RestTemplate. class); HttEntity is Represents an HTTP request or response entity, consisting of headers and body. RestTemplate is a class within the May 30, 2019 · The. The RestTemplate offers templates for common scenarios by HTTP method, in addition to the generalized exchange and execute methods Jan 10, 2017 · 3. Mar 21, 2018 · You can convert your request body to JSON formatted string using writeValueAsString () method of ObjectMapper. I also had a bad request 400 using method postForObject of RestTemplate. RELEASE, I am getting response. net. Mockito. 简介： 1、使用restTemplate的postForObject方法 注：目前没有发现发送携带header信息的getForObject方法。. I'm creating a REST Client in Java with RestTemplate from Spring Framework. I am writing client side REST GET call using Spring RestTemplate. Its good but as far as test rest template goes, this is absolutely nothing short of awful, I can't believe in 2022, people are making libraries with such verbose code just to pass headers to a request. writeValueAsString(bodyParamMap); HttpEntity<String> requestEnty = new HttpEntity<>(reqBodyData, header); postForEntity () for POST method getForEntity () for GET method. HttpHeaders headers = new HttpHeaders (); Enumeration headerNames = request. Jan 8, 2024 · This allows us to explicitly set additional HTTP headers with the request. postForObject(fooResourceUrl, request, ReturnType. Eric Milas. The default is cm:content. optionsForAllow(fooResourceUrl); Apr 9, 2020 · Spring RestTemplate. ResourceAccessException Caused by: java. URI Template variables are expanded using the given URI variables, if any. postForObject() response so the best you can do in terms of testing this method is to verify that restTemplate. In this Spring Boot RestTemplate POST request test example, we will create a POST API and then test it by sending the request body along with request headers using postForEntity () method. return new HttpHeaders () {{. @Override public ResponseEntity&lt;String&gt; callRestAPI(APIReqDataMO apiReqDataMO) { String apiURL = URIGenera Jun 2, 2016 · 1- Identify which HTTP header you need to use. Feb 9, 2021 · You are mocking the wrong overload of the postForEntity method. Oct 4, 2012 · MultiValueMap was good starting point for me but in my case it still posted empty object to @RestController my solution for entity creation and posting ended up looking like so: May 19, 2016 · The following works fine for me while writing tests for a given REST endpoint in Spring. any ()) with raw values (in your case "someurl" and HttpMethod. Maven dependencies. Unauthorized - 400. setContentType(MediaType. MULTIPART_FORM_DATA. public List<Transaction> getTransactions() { // only a 24h token for the sandbox This header typically indicates where the new resource is stored. It seems that we can send key value pairs together with a custom headers but not a request object itself attached to the HttpEntity. Checkout the documentation of the RestTemplate class. Many applications need to invoke REST APIs for some or all of their functions. Everything is fine until i have to do a post with postForLocation. According to many post I met bellow answer. I need to get HTTP status code Like this. forName(responseClass)) Once response body is obtained. This means that 4xx and 5xx do not result in an exception being thrown and can instead be detected through the response entity and its status code . 1) HttpEntity directly before sending: Feb 12, 2014 · 18. HTTP Interface - annotated interface with generated, dynamic proxy implementation. singletonList(MediaType. In Spring RestTemplate is there a way to send Custom Headers together with a POST Request Object. I think this will fix your issue. The non-blocking WebClient is provided by the Spring framework as a modern alternative to the RestTemplate. After some research I find a solution that said I have to call Jan 27, 2019 · 1. Hence for applications to function gracefully, they need to consume APIs elegantly and consistently. May 11, 2024 · 6. I want to make a service with Spring's RestTemplate, in my service side the code is like this : return iPersonRestService. Which can read and write Strings from the HTTP request and response. Base64;, you can replace the one line above with this: byte[] base64CredsBytes = Base64. ResponseEntity<Void> response = restTemplate. Sep 11, 2020 · Always get null response in ResponseEntity when using RestTemplate. Class RestTemplate. Hey man, I used Eclipse. – Joseph Gagnon. Set the content-type header value to MediaType. Spring Boot. Create a new resource by POSTing the given object to the URI template, and asynchronously returns the value of the Location header. The postForEntity method creates new resource by posting the given object to the given URI template using HTTP POST method. postForEntity Hot Network Questions Are there good examples of regular life being theory-laden? Aug 18, 2022 · 目录 一、GET请求 二、POST请求 三、PUT请求 四、DELETE请求 五、处理请求和响应 headers 一、GET请求 在RestTemplate中，对GET请求可以通过两个方法进行调用实现 第一种：getForEntity(String url,Class responseType,Object . class); A very similar question has been asked here: HTTP get with headers using RestTemplate. Sep 19, 2023 · Spring Boot RestTemplate POST Example. WebClient offers a modern alternative to the RestTemplate with efficient support for both sync Jun 24, 2012 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Jun 1, 2020 · Spring restTemplate . I believe it's the simplest possible way of making a JSON POST request in Spring: @Test. Uploading a Single File. 5. I need to pass http headers Jul 4, 2021 · Then you add the headers to a new HttpEntity instance and perform the request using RestTemplate: HttpEntity entity = new HttpEntity(headers); ResponseEntity<String> response = restTemplate. Two solutions that might work: Sending JSON: Set the content type to "application/json" and send a JSON formatted query: The Spring Android RestTemplate Module provides a RestTemplate implementation that uses Android's HTTP client. A way to solve this without needing to use a FileSystemResource that requires a file on disk, is to use a ByteArrayResource, that way you can send a byte array in your post (this code works with Spring 3. . Also the restTemplate. toString(), headers); URI locationHeader = restTemplate. Built on top of WebClient you set the content type header to "application/graphql", but yo are sending a JSON as data. EMPTY (or new HttpEntity<>(null)) there - the result should be the same. You can also pass HttpEntity. Request object is the payload to post and we can also use request as HttpEntity that helps to add additional HTTP headers. RestTemplate には、リクエストを送信するためのメソッドがいくつか用意されているため Feb 14, 2021 · Without any stubbing setup, Mockito returns null for reference types. 1. getForEntity(authenticateUrl, String. 2, RestClient emerges as a modern replacement for RestTemplate, offering a more intuitive and concise way to consume RESTful services. REST-styled APIs are all around us. any; Getting exception org. From doc: By default, this converter supports all text media types (text/*), and writes with a Content-Type of text/plain. Here's an example: @RunWith(MockitoJUnitRunner. Sep 19, 2019 · Set the content-type header value to MediaType. 2. I am trying to make a restTemplate. In this example, the HttpHeaders class is used to create the request headers and set the Content-Type header to application/json. RestTemplate - synchronous client with template method API. spring. The HttpEntity class is used to create the request entity with the request body and the headers. Apr 3, 2019 · If I have some static headers that should be applied to any request sending with RestTemplate: how should those be added? In this example, I'd always want to sent the http header accept=applicaton/json. postForEntity 1 POST request with Spring RestTemplate- BadRequest 400 Class RestTemplate. getBody(). Check RestTemplate javadoc: <T> ResponseEntity<T> postForEntity(String url, Object request, Class<T> responseType, Object uriVariables) <T> ResponseEntity<T> postForEntity(URI url, Object request, Class<T> responseType) answered Feb 10, 2021 at 19:55. g. getBody(); HttpHeaders headers = response. getForEntity(authenticateUrl,Void. class) sending empty request body. codec. postForLocation(updatePersonUrl, request); assertNotNull(locationHeader); 5. urlvaribales)；该方法提供三个参数 ur Mar 15, 2016 · An issue with the answer from Michal Foksa is that it adds the query parameters first, and then expands the path variables. Setup. class); You could also use a Map but it will make it quite complex. RestTemplate mockRestTemplate; To overrule the default strategy you can create a simple method in the class where you are wired your restTemplate: protected void acceptEveryCertificate() throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {. postForObject() without the request body and i am getting bad request. return Arrays. With its various methods for making GET, POST, PUT, and DELETE requests, as well as its ability to handle Jan 2, 2018 · However after calling responseEntity = restTemplate. この記事では以下の GET、POST の API へのリクエストを例に、 RestTemplate の使用方法について説明します。. Nov 17, 2014 · For most use cases, it's not correct to register MultipartFilter in web. AUTHORIZATION, "Bea Aug 10, 2020 · RestTemplate return NULL to all parameters when posting form data Hot Network Questions what is the difference between prayer (προσευχῇ) and prayer also translated as supplication (δέησις) in Philippians 4:6? Mar 11, 2022 · The issue is when running our unit test I am always getting org. Oct 13, 2018 · I'm trying to to access a RestAPI-Endpoint with the help of Spring's RestTemplate. save(person); returns null during your test. Thus, the second parameter after the URL must indicate which method to use for the request. 10. @Mock. HttpURLConnection. Apr 17, 2020 · Spring 5. If you really would like to achieve it with a Map you should create a <String,Object> map like: MultiValueMap<String, Object> map= new LinkedMultiValueMap<String, Object>(); Jul 25, 2019 · The RestTemplate class in Spring Framework is a synchronous HTTP client for making HTTP requests to consume RESTful web services. The request parameter can be a HttpEntity in order to add additional HTTP headers to the request. getForObject(String, Class, Object[]) , getForObject(String, Class, Map) ), and are capable of substituting any URI templates in that URL using either a String variable arguments array, or a Map 6. Even the code isn't intuitive. It handles HTTP connections, leaving application code to provide URLs (with possible template variables) and extract results. Then, put the mouse cursor over the class name (where it says "public class RestClientException", and press control+T. ResponseEntity<ResponseDto[]> responseEntity = restTemplate. ArgumentMatchers. reactive. So, this controller can receive post - request with xml in body and with params in url. ResponseEntity<List<MYDTOOTWO>> userActionsResponse = restTemplate. asList(responseEntity. We need to create HttpEntity with header and body. class); RestTemplate has a method in which you can define Interface ResponseExtractor<T>, this interface is used to obtain the headers of the response, once you have them you could send it back using HttpEntity and added again. Dec 18, 2020 · Take a look at the JavaDoc for RestTemplate. class); @Mock. HttpClientErrorException: 400 Bad Request when using restTemplate. readValue(responseBody, Class. answered Apr 1, 2021 at 12:40. Using the execute () Method. It's even written in the filter's javadoc. class); Instead of setting headers by using dedicated methods (like setAccept in previous code), you can use general set (headerName Apr 11, 2020 · You can use the nodeType field to create a specific type. postForEntity Apr 24, 2017 · HttpHeaders headers = new HttpHeaders(); headers. I have already tried out the exchange method which is available. postForObject and postForEntity handle POSTs, but have no easy way to set the Authentication headers. Use Postman (chrome) to make the HTTP call (the same one that you want to perform with RestTemplate). Base64 class and you would like to use the android Base64 class instead: import android. This tutorial is suitable for beginners and intermediate developers who want Thanks - this worked for me. eq on "someurl" and HttpMethod. postForEntity("url", obj , Employ. Construct an HttpEntity instance that wraps the header and the body object and post it using a RestTemplate. Dec 5, 2018 · 1. May 15, 2011 · It returns an HttpEntity which contains the full headers. – Alex Andrade. mockito. The following GET request is made with query parameters and request headers: headers. class); String resultString = response. class. You will learn how to create, configure, and use RestTemplate objects, as well as how to handle different types of responses and exceptions. 2. com,rest-template sample . String auth = username + ":" + password; Mar 12, 2019 · HTTP get with headers using RestTemplate (3 answers) Closed 5 years ago. May 11, 2024 · Get a List of Objects With RestTemplate. Mar 29, 2022 · Spring - RestTemplate is a tutorial that explains how to use the RestTemplate class in Spring framework, which provides a convenient way to communicate with RESTful web services. Basically, before the fix, the contents of the pojo were not being sent to the endpoint. Here is how I am using RestTemplate RestTemplate restTemplate = new RestTemplate(); List&lt;ClientHttpRequestInterceptor& We would like to show you a description here but the site won’t allow us. You can use HttpMessageConverter to request your restTemplate call for HttpEntity. client. Use OPTIONS to Get Allowed Operations. public static MockWebServer mockBackEnd; @Autowired Controller Controller; MissionController mc = Mockito. Build the request body as an instance of LinkedMultiValueMap class. To add custom request headers to an HTTP GET request, you should use the generic exchange() method provided by the RestTemplate class. {foobar}, this will cause an exception. Dec 1, 2017 · The postJSONData method does not use the restTemplate. getHeaders(); answered May 20, 2011 at 15:56. public void shouldLoginSuccessfully() {. xml because Spring MVC already does the work of processing your multipart request. make use of service class that you want to map and convert it The RestTemplate offers templates for common scenarios by HTTP method, in addition to the generalized exchange and execute methods that support of less frequent cases. Jun 29, 2016 · 4. set(HttpHeaders. getFoo()); Thanks for this. I tried to use restTemplate like this: Feb 17, 2016 · Spring RestTemplate to POST request with Custom Headers and a Request Object Hot Network Questions 2024 UK election: Which demographic factors explain the geography? Jun 25, 2024 · RestTemplate能大幅简化了提交表单数据的难度，并且附带了自动转换JSON数据的功能，但只有理解了HttpEntity的组成结构（header与body），且理解了与uriVariables之间的差异，才能真正掌握其用法。这一点在Post请求更加突出，下面会介绍到。 Apr 1, 2021 · 5. WebClient - non-blocking, reactive client with fluent API. And since you wanted to mock RestTemplate from the beginning, it's a good thing we have rid of it – now we can spy on our service without any objects to mock. see below. 2016-11-03 6190. Maven Dependencies. Table Of Contents. All GET requests work great this way, but I cannot figure out how to accomplish authenticated POST requests. URI Template variables are expanded using the given map. The RestTemplate class is used to create a RestTemplate object and call the postForEntity() method AND that this (mocked) rest template is the one being used in your actual method call. This page will walk through Spring RestTemplate. postForEntity(URL, request, ResponseDto[]. PUT, httpEntity, String. The reason was on my pojo, I did not use @JsonProperty to annotate each field. Response don't has any issues. this is my code : List<MYDTOONE> listDTORequest; //values. web. springframework. Jul 9, 2019 · I am puzzled why restTemplate. By default, the class. In Spring Boot 3. The postForObject method creates a new resource by posting the given object to given url or URI template using HTTP POST method. POST in your case would trigger the mock in your test. is the central class within the Spring framework for executing synchronous HTTP requests on the client side. Before any other human-question-flagging-bot marks this as duplicate, here's a humble explanation on how this is different from the others. getBody You can debug for: ResponseEntity<String> response = rgTemplate. Double click on RestClientException from the results, Eclipse will open that class for you. ResponseEntity<String> rsp = restTemplate. public ResponseEntity<byte[]> postNode(String nodeId, byte[] content) {. If you have HttpHeaders object - you can also pass it into the corresponding constructor: new HttpEntity<>(httpHeaders) edited Apr 1, 2021 at 14:20. RestTemplate. I try to write integration tests for spring-application controllers. Learn to consume HTTP POST REST API with Spring TestRestTemplate. The RestTemplate class also provides aliases for all supported HTTP request methods, such as GET Dec 29, 2021 · Complete Guide to Spring RestTemplate. The central class for client-side HTTP access. Dec 25, 2023 · It’s fairly straightforward for us to create the Authorization header for Basic Authentication, so we can do it manually with a few lines of code: HttpHeaders createHeaders(String username, String password) {. First, let’s see single file upload using the RestTemplate. sq rg da sz ox sg sj df li gy