Weirdest thing I have seen in a while. I run my API call through Postman and have no problems at all making a GET request. However, the groovy code below pulls groovyx.net.http.HttpResponseException: Internal Server Error. I am not able to pull even debug to understand if I am actually getting a 5xx error or my code is legitimately broken.
Additionally I have had code like this work in the past, I re-pulled that working code and have the same error. Curious if my Maven config settings would be causing the issue as well (Not sure where I would have to debug). I have also tried messing with the URIbuilder line to see if changing the endpoints would help.
Thanks for helping
abstract class HTTTPClient {
protected runGetRequest(String endpointPassedIn, RESTClient Client){
URIBuilder myEndpoint = new URIBuilder(new URI(Client.uri.toString() + endpointPassedIn))
//Error happens at the next Line
Client.get(uri: myEndpoint, contentType: ContentType.JSON)
LazyMap Response = unprocessedResponse.getData() as LazyMap
return Response
}
}
#Singleton(lazy = true)
class RequestService extends HTTTPClient {
private String auth = "myAuth"
private String baseURL = 'https://api.endpoint.net/'
private RESTClient client = setClient(baseURL, auth)
public buildResponseList(int pagesToPull) {
String endpoint = 'site/address.json?page='
ArrayList responseList = []
for (int i = 1; i <= pagesToPull; i++) {
LazyMap Response = runGetRequest(endpoint + i, client)
for (row in Response) {
responseList.add(row)
//TODO Add in items call here
}
}
return conversationList
}
The error was due to encoding in the Authorization, was on the server side, not the code side
Related
I have broke it down to a minimum and still don't know why this happens.
I have the following method in my controller:
#RequestMapping(method = RequestMethod.POST, value = "/myGreatCall")
public String getDynamicData(#RequestBody DataRequest dr) {
return dr.toString();
}
Using the following simple class:
public class DataRequest {
private String type;
//Getters and setters here
}
Now if I try to call this, I get an error 400 as the response.
let url = window.location.protocol+"//"+window.location.host+"/myGreatCall";
let request = new XMLHttpRequest();
request.open("POST", url, true);
request.onload = function () {
console.log(request.response); //Here I read the reponse and get the error 404
};
// This is the data I send as the body
let data = JSON.stringify(
{
type: "myType"
}
);
request.setRequestHeader("Content-Type", "application/json");
request.send(data);
Now from the error I suspect that for some reason it cant map my json object into the java object, but I have no idea why.
I tested the following:
do the request without the Method Parameter, that worked
different data types in the java class
handing over a hardcoded string '{\"type\":\"myType\"}' to the #send()
Any Ideas what I might be doing wrong?
It may be down to JSON serialization. Try this:
let data = JSON.stringify(
{
"type": "myType"
}
);
Ok seems to be something weird. I dont know what caused it, but after a PC restart it worked fine.
I am unable to get values filled in the map after making a web client call and using the response of the previous Mono.Here is the code I have tried.The value of parameters.size() comes out to zero.Not able to get the reason as to why the value is not filled.I basically want to return age ( and not Mono object)
from this method.Using block gives an error block()/blockFirst()/blockLast() are blocking, which is not supported in thread reactor-http-nio-3.
Map<String, String> parameters = new HashMap<String,String>();
Mono<Person> obj = webClient
.post()
.uri("dummy url")
.accept(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML)
.retrieve()
.bodyToMono(Person.class)
.flatMap(resp -> {
parameters.put("name", resp.getName());
parameters.put("age", resp.getAge());
return Mono.just(new Person(resp.getName(),resp.getAge()));
}
);
System.out.println(parameters.size());
Please suggest where I am wrong and solution to fix the same.
Since this is about collecting and using a token of some sort collected from a previous HTTP call, your best bet is to delegate all that to an ExchangeFilterFunction.
An ExchangeFilterFunction is a filter that is executed on the client side for each outgoing request. Here is a very, very naïve implementation of such a filter:
class TokenFilterFunction implements ExchangeFilterFunction {
private final AtomicReference<String> token = new AtomicReference<>();
#Override
public Mono<ClientResponse> filter(ClientRequest req, ExchangeFunction next) {
if (this.token.get() == null) {
return fetchToken(next).then(sendRequest(req, next));
}
else {
return sendRequest(req, next);
}
}
private Mono<ClientResponse> sendRequest(ClientRequest req, ExchangeFunction next) {
ClientRequest request = ClientRequest.from(req)
.header("Token", this.token.get()).build();
return next.exchange(request);
}
private Mono<Void> fetchToken(ExchangeFunction next) {
ClientRequest tokenRequest = ClientRequest.create(HttpMethod.GET,
URI.create("https://example.com/token")).build();
return next.exchange(tokenRequest).doOnNext(res -> {
this.token.set(res.headers().header("Token").get(0));
}).then();
}
}
This could automatically call the token endpoint to fetch a token when needed and directly chain with the request you asked in the first place. Again, such an implementation should be much more complex than that, handling domains, errors, and more.
If you're using some authentication technology, such a filter might be implemented already in Spring Security in a much, much better way.
You can configure it on your client during the building phase, like:
WebClient webClient = WebClient.builder().filter(new TokenFilterFunction()).build();
I have made a REST API and I want to use it using my Xamarin.iOS application.
Basically I want to call the API from my Xamarin application by sending some arguments to one of my API's function.
I tried the resources available at Xamarin's official website, but I a newbie so I cannot understand how it was done.
The REST API is hosted locally by the network I am using. It is not hosted at a static IP.
Kindly guide me.
You don't really need a fancy plugin if you just want to hit Web Endpoints. I simply use the basic WebRequest API.
var request = WebRequest.CreateHttp(YOUR_URL_HERE);
request.Method = "GET";
request.ContentType = "application/JSON";
request.BeginGetResponse(ResponseComplete, request);
... and then your response method can be something along the lines of...
protected void ResponseComplete(IAsyncResult result)
{
try
{
var request = result.AsyncState as HttpWebRequest;
if (request != null)
{
Debug.WriteLine("Completed query: " + request.RequestUri);
using (var streamReader = new StreamReader(response.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
Debug.WriteLine("Query Result: " + result);
}
}
}
}
... and if you need to post data you can add request.BeginGetRequestStream(PostData, request); before request.BeginGetResponse(ResponseComplete, request); and make your GetRequestStream handling method something along the lines of...
protected void PostData(IAsyncResult result)
{
var request = result.AsyncState as HttpWebRequest;
if (request != null)
{
using (var postStream = request.EndGetRequestStream(result))
{
var json = JsonConvert.SerializeObject(DATA_TO_POST);
Debug.WriteLine("Posting data: " + json);
var byteArray = Encoding.UTF8.GetBytes(json);
postStream.Write(byteArray, 0, byteArray.Length);
}
}
}
I would recommend Refit, you can install it as a NuGet package. Its pritty simple to use.
Refit allows us to define an interface that describes the API that we're calling, and the Refit framework handles making the call to the service and deserializing the return.
Have a look at this great blog post on how to set it up and other packages that might help you out. http://arteksoftware.com/resilient-network-services-with-xamarin/
I have used RestSharp before but Refit is alot easier to get running.
I have a webpage with a area where users can login. This area
www.host.com/mypage/myarea
should be under https.
The problem is that my https is running on a another host:
www.something-foo.host.com/mypage/myarea
. (loadbalancer stuff...??? I dont know why)
My try is to annotate the Pages with #RequireHttps, an than rewrite the urls of the Pages.
But how and where? Has someone please an example?
Thanks for your help.
Well if you really want to this with Wicket your best option would be to write an implementation of IRequestMapperDelegate and set them during the onInit() process of your WicketApplication.
To give you an idea how to do this I've written an example of raping the HttpsMapper of Wicket:
setRootRequestMapper(new HttpsMapper(getRootRequestMapper(), new HttpsConfig(8080, 8443)) {
private final static String SUBDOMAIN = "www.something-foo.";
#Override
protected Scheme getSchemeOf(Request request) {
HttpServletRequest req = (HttpServletRequest) ((WebRequest) request).getContainerRequest();
// well that's basically cheating and not so nice... but we're not allowed to overwrite mapRequest()
// but that means that every request that doesn't start with the subdomain will be treated as HTTP aka
// insecure.
if (req.getServerName().startsWith(SUBDOMAIN) == false) {
return Scheme.HTTP;
}
return super.getSchemeOf(request);
}
#Override
protected String createRedirectUrl(IRequestHandler handler, Request request, Scheme scheme) {
// stolen from super implementation
HttpServletRequest req = (HttpServletRequest) ((WebRequest) request).getContainerRequest();
String url = scheme.urlName() + "://";
// except the part where we insert the subdomain
url += SUBDOMAIN;
url += req.getServerName();
if (!scheme.usesStandardPort(getConfig())) {
url += ":" + scheme.getPort(getConfig());
}
url += req.getRequestURI();
if (req.getQueryString() != null) {
url += "?" + req.getQueryString();
}
return url;
}
});
Depending on your question I can't really determine if this is a good solution ... it really depends on how many frameworks are working on top of Wicket. Since you didn't mention anything else I'm assuming none.
I am using MonoTouch to build an iPhone app. In the app I am making Web Requests to pull back information from the web services running on our server.
This is my method to build the request:
public static HttpWebRequest CreateRequest(string serviceUrl, string methodName, JsonObject methodArgs)
{
string body = "";
body = methodArgs.ToString();
HttpWebRequest request = WebRequest.Create(serviceUrl) as HttpWebRequest;
request.ContentLength = body.Length; // Set type to POST
request.Method = "POST";
request.ContentType = "text/json";
request.Headers.Add("X-JSON-RPC", methodName);
StreamWriter strm = new StreamWriter(request.GetRequestStream(), System.Text.Encoding.ASCII);
strm.Write(body);
strm.Close();
return request;
}
Then I call it like this:
var request = CreateRequest(URL, METHOD_NAME, args);
request.BeginGetResponse (new AsyncCallback(ProcessResponse), request);
And ProcessResponse looks like this:
private void ProcessResponse(IAsyncResult result)
{
try
{
HttpWebRequest request = (HttpWebRequest)result.AsyncState;
using (HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(result)) // this is where the exception gets thrown
{
using (StreamReader strm = new System.IO.StreamReader(response.GetResponseStream()))
{
JsonValue value = JsonObject.Load(strm);
// do stuff...
strm.Close();
} // using
response.Close();
} // using
Busy = false;
}
catch(Exception e)
{
Console.Error.WriteLine (e.Message);
}
}
There is another question about this issue for Monodroid and the answer there suggested explicitly closing the output stream. I tried this but it doesn't solve the problem. I am still getting a lot of ReadDone2 errors occurring.
My workaround at the moment involves just re-submitting the Web Request if an error occurs and the second attempt seems to work in most cases. These errors only happen when I am testing on the phone itself and never occur when using the Simulator.
Whenever possible try to use WebClient since it will deal automatically with a lot of details (including streams). It also makes it easier to make your request async which is often helpful for not blocking the UI.
E.g. WebClient.UploadDataAsync looks like a good replacement for the above. You will get the data, when received from the UploadDataCompleted event (sample here).
Also are you sure your request is always and only using System.Text.Encoding.ASCII ? using System.Text.Encoding.UTF8 is often usedm, by default, since it will represent more characters.
UPDATE: If you send or receive large amount to byte[] (or string) then you should look at using OpenWriteAsync method and OpenWriteCompleted event.
This is a bug in Mono, please see https://bugzilla.xamarin.com/show_bug.cgi?id=19673