I'm trying django-tastypie with a REST client in my browser (Postman)
GET works well:
GET http://127.0.0.1:8000/api/v1/entry/
GET http://127.0.0.1:8000/api/v1/entry/1/
But I can't get PUT works with an entry:
PUT GET http://127.0.0.1:8000/api/v1/entry/1/
I get this error:
{
"error_message": "You cannot access body after reading from request's data stream",
...
}
I allowed the method in the resource though.
Where can it come from?
Thanks
OK, I have found a solution.
On postman, choose the 'raw' option and type the json data.
Then add a Content-Type header by clicking on the 'Headers' button on the top right. Type "application/json".
Related
so I'm at lost of why this happened. I keep receiving error in console log that says The getter 'iterator' was called on null .
What I'm sure of:
I know this is not the case because the data returned from api is there.
The decoded data is also there.
And the view renders the data perfectly fine, so the data is obviously there.
But the error keeps on popping it's like, the decoded data decoded
from JSON turned to map then list is missing of iterator attribute.
Can someone help me on this ?
This is the code and the error showed by dart debugger.Thanks.
Here is the response.body of the api call. So yeah the data is there. Sorry about the red highlight since i can't show you the content.
Try modifying the request initialization to
List<Dynamic> request = new List() ;
And remove the cast as List<dynamic >;
I would like to obtain in a response of http-connector, only the “number” element, but I cannot obtain it.
I’m trying to have an inline Javascript with the following statement:
S(response).prop(“status”).prop(“number”).numberValue();
but it shows an error: SPIN/JACKSON-JSON-01004 Unable to find ‘status’
What it’s wrong in the statement?
Rest response to parse:
{
“status”: {
“number”: 200,
“type”: “OK”,
“description”: “Status OK”
}
}
There is no obvious issue with your expression. I would debug further to see if response indeed contanis the Json string you posted. The error shows that response exists, but the content differs.
This working example I just created may help you:
https://github.com/rob2universe/camunda-http-connector-example
If this does not help, you could share more info, e.g. the process model, server log, service you are calling...
I created a WebAPI with Visual Studio 2017 using its .Net Core template. I am able to test my Get() code with Postman and everything works correctly. Now, I would like to send a Post request so it calls the following code.
[HttpPost]
public void Post([FromBody] string value)
{
Console.WriteLine("value" + value);
}
However, I get the following error when call
https://localhost:44364/api/carbon?value=100
{
"": [
"A non-empty request body is required."
]
}
I am sure the problem lies with they way my Postman is setup but it looks correct.
Any suggestions? Thank you!
Updated per suggestion
I added key/value to the body and received "The input was not valid."
You do not need to use Query string.You need to post the string with raw json, and do not forget the double quotation marks.Refer to here to get more details on post methods by Postman.
The error message you're receiving is very descriptive of the problem - you haven't provided a body in your request.
Click "Body" in Postman (next to "Headers") then select the type of body you want to send, for example x-www-form-urlencoded and then add a key/value pair beneath, e.g. test and hello world.
Hit "Send".
I am trying to invoke a POST web service via Postman and I am getting the following error.
Error while sending request: Failed to execute setRequestHeader on
XMLHttpRequest: Value is not a valid ByteString.
Request Headers
X-PW-AccessToken:{{api_token}}
X-PW-Application:developer_api
X-PW-UserEmail:{{api_email}}
Content-Type:application/json
Request Body
{
"page_size": 25
}
Can anyone tell me why I am getting this error, and how can I get rid of this?
I think Http protocol's header can only post ByteString (what is ByteString? I think it is ASCII).
So if you have other char, for example, 汉字. if you put '汉字' add to Http Header the error 'Value is not a valid ByteString' happen!
Solove: You can use the encodeURI function to encode the String in the client, and then, You can use URLdecode.decode()(java) to decode the header information in the server.
I'm working with a slightly unconventional API that is expecting a JSON body with a GET request and I have no control over this. Unfortunately, every time I attempt to make the request, it seems to completely disappear and never make it to the API. I originally wrote the request using a standard URLSession and then switched to try Alamofire in an attempt to fix it but ended with the same result. My request looks like this:
Alamofire.request("http://192.168.1.1:8000/connect/", method: .get, parameters: ["test": "test"], encoding: JSONEncoding.default)
.responseJSON { response in
let body = response.request?.httpBody
guard response.result.isSuccess else {
onCompletion(nil)
return
}
onCompletion(response.result.value as! [String : Any]?)
}
This exact code works for a different request where there is no JSON in the body, but seemingly the moment I add it, it just times out. This has already been discussed on the alamofire github repo (https://github.com/Alamofire/Alamofire/issues/1819) but the final comment with what should be working code isn't really any different to mine, so doesn't provide any help, nor do the other linked issues.
Printing the request with debugPrint gives me this curl command
$ curl -i \
-H "Content-Type: application/json" \
-d "{\"test\":\"test\"}" \
"http://192.168.1.1:8000/connect/"
Which is missing the -X GET flag, but when I add that in, the request works as expected and the server responds, so I know the API itself is working and is happy processing the JSON in the body, so I'm at a loss as to what's going on.
I've installed Timberjack to attempt to trace things, which didn't give me any more info at all, just what I already knew
Request: GET http://192.168.1.1:8000/connect/
Headers: [
Content-Type : application/json
Content-Length : 24
]
Although I'm not sure if it's supposed to be showing me the body as well which it isn't?
In both cases (URLSession and Alamofire) the request gives the following output which I don't see at any other time:
2017-01-22 23:31:09.797453 my-app[3755:1349066] [] nw_endpoint_flow_service_writes [2 192.168.1.1:8000 ready socket-flow (satisfied)] Write request has 4294967295 frame count, 0 byte count
2017-01-22 23:32:04.484182 my-app[3755:1349066] [] __tcp_connection_write_eof_block_invoke Write close callback received error: [89] Operation canceled
Anyone have any ideas on what's going on as I'm completely at a loss at this point.
Update
I've done some more digging. If I change the endpoint to https://httpbin.org/get then the request goes through just fine and I get a response. Whilst this kind of suggests the API server is refusing to process the request, it's still working with the cURL command so that can't really be the issue.
I also forgot to mention (although not sure it should make a difference) that the API I'm trying to communicate with is connected via an ad-hoc wifi. Other requests to it work just fine though so I can definitely communicate with it.
Update 2
So I've been able to switch the server to using POST instead of GET and unsurprisingly it now works, however I would still love to know of a solution to the original problem
URLSession and CFHTTPMessage cannot send a message body for a GET request. They send the content length for the body, but do not send the body itself. This results in a timeout.
In order to resolve this issue I've used libcurl to handle the GET requests which have a message body to my project. I use URLSession everywhere else. When you add a body to a request using libcurl it changes the request to a POST, but that can be changed back to a GET after setting the body and before submitting the request.