Trying to call an API and it requires to pass content-type as "application/json; format=pandas-records".
How can I pass it in HttpHeaders instance in Java. Because I cant find anything in MediaType for above given Content-Type.
I tried adding by making a string out of it like given below.
final HttpHeaders headers = new HttpHeaders();
headers.add(HttpHeaders.CONTENT_TYPE, "application/json; format=pandas-records");
But this is not working and I am getting below error.
500 INTERNAL SERVER ERROR: [{"error_code": "MALFORMED_REQUEST", "message": "Failed to parse input as a Pandas DataFrame. Ensure that the input is a valid JSON-formatted Pandas DataFrame with the records orient produced using t... (2257 bytes)]
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This question already has answers here:
How to get response body with request.send() in dart
(8 answers)
Closed 1 year ago.
I am developing an app using flutter and I am using http library to call the api I built.
and I want to make a multipart request to send files and it sends it as well but I can't receive any response from the server because the object returned is StreamResponse.
please tell me how to get the body of the response.
Code Snippet:
var request = http.MultipartRequest('POST', Uri.parse('$SERVER_URL/signup'));
request.files.add(await http.MultipartFile.fromPath(
'image',
user.image,
filename: 'image',
contentType: MediaType('multipart/form-data', 'multipart/form-data'),
));
StreamResponse x = await request.send();
//get body of the response
Thanks,
Just use http.Response.fromStream()
import 'package:http/http.dart' as http;
var streamedResponse = await request.send();
var response = await http.Response.fromStream(streamedResponse);
StreamedResponse has a stream getter as you'd expect that delivers a stream of byte arrays.
Assuming that you want characters instead of bytes, push those through the appropriate character decoder - let's assume UTF-8.
You then might want all those joined into a single string, so we can use join. Giving you:
print(await x.stream.transform(utf8.decoder).join());
I'm building my own WebhookClient for dialog flow. My code is the following (using Azure Functions, similar to Firebase Functions):
module.exports = async function(context, req) {
const agent = new WebhookClient({ request: context.req, response: context.res });
function welcome(agent) {
agent.add(`Welcome to my agent!!`);
}
let intentMap = new Map();
intentMap.set("Look up person", welcome);
agent.handleRequest(intentMap);
}
I tested the query and the response payload looks like this:
{
"fulfillmentText": "Welcome to my agent!!",
"outputContexts": []
}
And the headers in the response look like this:
Transfer-Encoding: chunked
Content-Type: application/json; charset=utf-8
Server: Microsoft-IIS/10.0
X-Powered-By: ASP.NET
Date: Tue, 11 Dec 2018 18:16:06 GMT
But when I test my bot in dialog flow, it returns the following:
Webhook call failed. Error: Failed to parse webhook JSON response:
Expect message object but got:
"笀ഀ ∀昀甀氀昀椀氀氀洀攀渀琀吀攀砀琀∀㨀 ∀圀攀氀挀漀洀攀 琀漀 洀礀 愀最攀渀琀℀℀∀Ⰰഀ ∀漀甀琀瀀甀琀䌀漀渀琀攀砀琀猀∀㨀 嬀崀ഀ紀".
There's Chinese symbols!? Here's a video of me testing it out in DialogFlow: https://imgur.com/yzcj0Kw
I know this should be a comment (as it isn't really an answer), but it's fairly verbose and I didn't want it to get lost in the noise.
I have the same problem using WebAPI on a local machine (using ngrok to tunnel back to Kestrel). A friend of mine has working code (he's hosting in AWS rather than Azure), so I started examining the differences between our responses. I've notice the following:
This occurs with Azure Functions and WebAPI (so it's not that)
The JSON payloads are identical (so it's not that)
Working payload isn't chunked
Working payload doesn't have a content type
As an experiment, I added this code to Startup.cs, in the Configure method:
app.Use(async (context, next) =>
{
var original = context.Response.Body;
var memory = new MemoryStream();
context.Response.Body = memory;
await next();
memory.Seek(0, SeekOrigin.Begin);
if (!context.Response.Headers.ContentLength.HasValue)
{
context.Response.Headers.ContentLength = memory.Length;
context.Response.ContentType = null;
}
await memory.CopyToAsync(original);
});
This code disables response chunking, which is now causing a new and slightly more interesting error for me in the google console:
*Webhook call failed. Error: Failed to parse webhook JSON response: com.google.gson.stream.MalformedJsonException: Unterminated object at line 1 column 94 path $.\u0000\\"\u0000f\u0000u\u0000l\u0000f\u0000i\u0000l\u0000l\u0000m\u0000e\u0000n\u0000t\u0000M\u0000e\u0000s\u0000s\u0000a\u0000g\u0000e\u0000s\u0000\\"\u0000.\
I thought this could be encoding at first, so I stashed my JSON as a string and used the various Encoding classes to convert between them, to no avail.
I fired up Postman and called my endpoint (using the same payload as Google) and I can see the whole response payload correctly - it's almost as if Google's end is terminating the stream part-way through reading...
Hopefully, this additional information will help us figure out what's going on!
Update
After some more digging and various server/lambda configs, I spotted this post here: https://github.com/googleapis/google-cloud-dotnet/issues/2258
It turns out that json.net IS the culprit! I guess it's something to do with the formatters on the way out of the pipeline. In order to prove this, I added this hard-coded response to my POST controller and it worked! :)
return new ContentResult()
{
Content = "{\"fulfillmentText\": null,\"fulfillmentMessages\": [],\"source\": null,\"payload\": {\"google\": {\"expectUserResponse\": false,\"userStorage\": null,\"richResponse\": {\"items\": [{\"simpleResponse\": {\"textToSpeech\": \"Why hello there\",\"ssml\": null,\"displayText\": \"Why hello there\"}}],\"suggestions\": null,\"linkOutSuggestion\": null}}}}",
ContentType = "application/json",
StatusCode = 200
};
Despite the HTTP header saying the charset is utf-8, that is definitely using the utf-16le character set, and then the receiving side is treating them as utf-16be. Given you're running on Azure, it sounds like there is some configuration you need to make in Azure Functions to represent the output as UTF-8 instead of using UTF-16 strings.
I'm trying to create a REST API from a SOAP Service using IBM API Connect 5. I have followed all the steps described in this guide (https://www.ibm.com/support/knowledgecenter/en/SSFS6T/com.ibm.apic.apionprem.doc/tutorial_apionprem_expose_SOAP.html).
So, after dragging the web service block from palette, ensuring the correctness of endpoint and publishing the API, I have tried to call the API from the browser. Unfortunately, the API return the following message:
<errorResponse>
<httpCode>500</httpCode>
<httpMessage>Internal Server Error</httpMessage>
<moreInformation>Error attempting to read the urlopen response
data</moreInformation>
</errorResponse>
To testing purpose, I have logged the request and I have tried the request on SOAPUI. The service return the response correctly.
What is the problem?
In my case, the problem was in the backend charset (Content-Type: text/xml;charset=iso-8859-1).
For example, backend returns text/xml in German (or French). Api Connect cannot process character ü. It needs Content-Type: text/xml;charset=UTF-8.
I had a similar issue, in my case was the accept. if you have an Invoke and the content-type or the accept, is not matching the one of the request, or the response that you got, APIC is getting mad.
Please, check if the formats to send (contentType) and receive (accept) are the same of that your API expected. In my case the error occurs because the API returns a String and my default code is configured to receive a JSON body.
//define a JSON-PLAIN TEXT protocol
private HttpEntity<String> httpEntityWithBody(Object objToParse){
HttpHeaders headers = new HttpHeaders();
headers.set("Authorization", "Bearer " + "xxx token xxx");
headers.set("Accept", MediaType.TEXT_PLAIN_VALUE);
headers.setContentType(MediaType.APPLICATION_JSON);
Gson gson = new GsonBuilder().create();
String json = gson.toJson(objToParse);
HttpEntity<String> httpEntity = new HttpEntity<String>(json, headers);
return httpEntity;
}
//calling the API to APIC...
ParameterizedTypeReference<String> responseType = new
ParameterizedTypeReference<String>(){};
ResponseEntity<String> result =
rest.exchange(builder.buildAndExpand(urlParams).toUri(), HttpMethod.PUT, httpEntityWithBody(myDTO), responseType);
String statusCode = result.getStatusCodeValue();
String message = result.getBody();
I have a REST request that respond with the following:
{
"access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6IlQwWE8xNnAtMmZzMWxremV5",
"expires_in": 2592000,
"token_type": "Bearer"
}
I want to take the value of access_token, store it in a property and reuse it for two subsequent requests.
Following some tutorial here, when running the request that obtains the access_token I get a:
error parsing target property: error unexpected element CDATA
But why?
There is no CDATA in my raw response.
If you've problems using transfer properties step to get the JSON value from your response, you can use a groovy test step to achieve your goal.
So create a groovy test step to parse your response, get your value and set it as a property (for example at testCase level) with the follow code:
import groovy.json.JsonSlurper
// get response using the name of your test step
def response = context.expand('${REST Test Request#Response}')
// parse response
def jsonResp = new JsonSlurper().parseText(response)
// get the token an set as a property in the testCase
testRunner.testCase.setPropertyValue('access_token',jsonResp.access_token)
Then in the other testSteps (REST or SOAP...) you can use the follow code to get the access_token value you set in the testCase:
${#TestCase#access_token}
Hope this helps,
I'm trying to send a multipart/form-data from a worker with IE. I've already done it with Chrome, Firefox, Safari using formData objects (not supported IE, I need a manual one)
The binary data I'm sending is a crypto-js encrypted data. With formData objects I do:
var enc = new Buffer(encrypted.ciphertext.toString(CryptoJS.enc.Base64), 'base64');
formData.append("userFile" , new Blob([finalEncrypted], {type: 'application/octet-binary'}), 'encrypted')
this works fine generating a multipart like this(missed some parts of it):
request headers:
Accept:*/*
Accept-Encoding:gzip, deflate
Cache-Control:no-cache
Connection:keep-alive
Content-Length:30194
Content-Type:multipart/form-data; boundary=WebKitFormBoundary0.gjepwugw5cy58kt9
body:
--WebKitFormBoundary0.gjepwugw5cy58kt9
Content-Disposition: form-data; name="userFile"; filename="encrypted"
Content-Type: binary
all binary data
--WebKitFormBoundary0.cpe3c80eodgc766r--
With the manual multipart/form-data:
IE11 doesn't accept readAsBinaryString(deprecated)
I would like to avoid sending base64 encoded data(readAsDataURL)(33% payload)
The binary data I'm sending is a crypto-js encrypted data.
I'm trying:
finalEncrypted = new Buffer(encrypted.ciphertext.toString(CryptoJS.enc.Base64), 'base64');
then in my manual multipart I tried to convert the buffer to a binary string:
item.toString('binary')
the multipart result looks looks this:
--WebKitFormBoundary642013568702052
Content-Disposition: form-data; name="userfile"; filename="encrypted"
Content-Type: binary
all binary data
ÐçÀôpRö3§]g7,UOÂmR¤¼ÚS"Ê÷UcíMÆÎÚà/,hy¼øsËÂú#WcGvºÆÞ²i¨¬Ç~÷®}éá?'é·J]þ3«áEÁÞ,4üBçðºÇª bUÈú4
T\Ãõ=òEnýR _[1J\O-ïǹ C¨\Ûøü^%éÓÁóJNÓï¹LsXâx>\aÁV×Þ^÷·{|'
On the .NET server we check the hash calculated on client versus calculated on server. Server reply that hashes doesn't match. This makes me think that I'm not sending the file correctly.
It looks like you did not yet get a solution, at least you did not post it here if you had one.
On my end I use jQuery which handles the low level nitty gritty of the actual post.
It may be that you are doing one small thing wrong and IE fails on it. Since you do not show what you used with FormData. It is rather difficult to see whether you had a mistake in there.
// step 1. setup POST data
var data = new FormData();
data.append("some_variable_name", "value_for_that_variable");
data.append("some_blob_var_name", my_blob);
data.append("some_file_var_name", my_file);
// step 2. options
var ajax_options =
{
method: "POST",
processData: false,
data: data,
contentType: false,
error: function(jqxhr, result_status, error_msg)
{
// react on errors
},
success: function(data, result_status, jqxhr)
{
// react on success
},
complete: function(jqxhr, result_status)
{
// react on completion (after error/success callbacks)
},
dataType: "xml" // server is expected to return XML only
};
// step 3. send
jQuery.ajax(uri, ajax_options);
Step 1.
Create a FormData object and fills the form data, that includes variables and files. You may even add blobs (JavaScript objects, will be transformed to JSON if I'm correct.)
Step 2.
Create an ajax_options object to your liking. Although here I show your the method, processData, data, contentType as they must be in case you want to send a FormData. At least, that works for me... It may be possible to change some of those values.
The dataType should be set to whatever type you expect in return.
Step 3.
Send the request using the ajax() function from the jQuery library. It will build the proper header and results as required for the client's browser.