I am trying to query my local Solr server using HttpClient and I cannot figure out why the parameters are not being added to the GET call.
My code for doing this is:
HttpRequestBase request = new HttpGet("http://localhost:8080/solr/select");
HttpParams params = new BasicHttpParams();
params.setParameter("q", query);
params.setParameter("start", String.valueOf(start));
params.setParameter("rows", String.valueOf(rows));
request.setParams(params);
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(request);
HttpEntity entity = response.getEntity();
InputStream is = entity.getContent();
return stringToStreamConversion(is); //500 error, NullPointerException, response is empty
I have tried to return several things in hopes of seeing what I would get and trying to figure out where the problem was. I have finally realized that I was only getting back the http://localhost:8080/solr/select when I returned
return request.getURI().toURL().toString();
I cannot figure out why the parameters are not getting added. If I do
return request.getQuery();
I get nothing back...any ideas? Thanks for the help in advance!
From what I have seen you are not able to associate your paeans with the request.
So, instead of creating a new HttpParams object and associating it with request, can you try the following approach ?
httpCclient.getParams().setParameter("q", query");
....
The simpler option is to use the approach I used in HTTPPostScheduler, like this:
URL url = new URL(completeUrl);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("type", "submit");
conn.setDoOutput(true);
// Send HTTP POST
conn.connect();
Related
Im using this line to consume the API post method
var postTask = client.PostAsJsonAsync("AgregarNegocio", new StringContent(JsonConvert.SerializeObject(model).ToString(), Encoding.UTF8, "application/json"));
however when the API method is hit
public IActionResult AgregarNegocio([FromBody]NegocioViewModel model)
all the properties in model are null...
i already tried with and without [FromBody] and other solutions but none has worked yet, any suggestions?, thanks!
You need to construct your http client like this:
_client = new HttpClient { BaseAddress = new Uri("your http://my base url goes here"),
Timeout = new TimeSpan(0, 0, 0, 0, -1) };
_client.DefaultRequestHeaders.Accept.Clear();
_client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));//add json header
//_client.DefaultRequestHeaders.Add("Bearer", "some token goes here");
and you need to call your method like this:
var postTask = await _client.PostAsJsonAsync("AgregarNegocio", model);
make sure you call "await" on it because it is async.
NOTES:
Notice that I added MediaTypeWithQualityHeaderValue to indicate that it is json.
Also using Route usually is not a good idea... It is better to use HttPost("MyRoute") because it combined the ControllerName + Route. But it is up to you.
Try to use PostAsync instead of PostAsJsonAsync
var postTask = await client.PostAsync("AgregarNegocio", new StringContent(JsonConvert.SerializeObject(model), Encoding.UTF8, "application/json"));
You can use the HttpClient extension method :
https://learn.microsoft.com/en-us/previous-versions/aspnet/hh944682(v=vs.118)
PostAsJsonAsync(
this HttpClient client,
string requestUri,
T value
)
var postTask = client.PostAsJsonAsync<NegocioViewModel>("AgregarNegocio", model);
You can use PostAsync but also do not forget about using HttpClient in right way as i described in this article.
I'm using HttpClient like this in my console app:
using (var http = new HttpClient(handler))
{
http.BaseAddress = new Uri("http://127.0.0.1:34323/");
var response = await http.PostAsync("/api/generate", new StringContent(
JsonConvert.SerializeObject(data), Encoding.UTF8, "application/json"));
Console.WriteLine(response.Content.ToString());
}
In debug mode, I can see that the controller is returning a string of JSON.
However, I only get this written to the console:
System.Net.Http.StreamContent
How can I get it to write the actual JSON that's being returned?
Thanks!
Try below line:
Console.WriteLine(response.Content.ReadAsStringAsync().Result.ToString());
Hi all I use apache's httpclient to make restcalls, everything is working fine, When multiple thread are using this method my app crashes.
What is the implementation for this class that is MultithreadSafe.
Here is my code.
httpClient = new HttpClient();
HttpMethod method = null;
method = new GetMethod();
... method creation...
httpClient.executeMethod(method);
method.releaseConnection();
Thanks in advance. Juan
Have you looked at the HttpClient threading documentation ?
To get started one must create an instance of the
MultiThreadedHttpConnectionManager and give it to an HttpClient. This
looks something like:
MultiThreadedHttpConnectionManager connectionManager =
new MultiThreadedHttpConnectionManager();
HttpClient client = new HttpClient(connectionManager);
The issue you're having is quite common when using HttpClient out-of-the -box
I have executed RestRequest and got non-typed IRestResponse.
How can I convert it to IRestResponse<T>?
For example IRestResponse<MyErrorData> or IRestResponse<MyData>?
You need to use the generic overload of Execute:
var client = new RestClient();
client.BaseUrl = BaseUrl;
request.AddParameter("AccountSid", _accountSid, ParameterType.UrlSegment);
var response = client.Execute<T>(request);
Execute<T> is the key to getting back a typed response.
I found that, depending on the version of RestSharp you have installed, Execute<T> threw a compiler error. (Tho it seems fine in v106.15.)
Another option is to cast it, which seems to work when the first option doesn't:
RestClient client = new RestClient();
IRestResponse<T> response = (IRestResponse<T>)client.Execute(request);
Also, don't forget that your method (or class) must be decorated with the T type parameter:
Eg
partial void InterceptResponse<T>(IRestRequest request, ref IRestResponse<T> response)
...
RestClient client = new RestClient();
IRestResponse<T> response = client.Execute<T>(request);
(or IRestResponse<T> response = (IRestResponse<T>)client.Execute(request);)
....
(In this example, I'm intercepting a RestResponse, doing something, such as re-calling, and passing back the new response as ref response.)
The follow code (running in ASP.Net 2.0) displays the contents of the requested URL twice. I only want it to display the contents of the requested URL once. I can't figure out what I'm doing wrong. The URL requested is returning XML and if I visit the URL directly, it works fine.
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
byte[] postDataBytes = Encoding.UTF8.GetBytes(postData);
request.Method = "POST";
request.ContentType = "application/xml";
request.ContentLength = postDataBytes.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(postDataBytes, 0, postDataBytes.Length);
requestStream.Close();
// get response and write to console
response = (HttpWebResponse) request.GetResponse();
StreamReader responseReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
try {
Response.Write(responseReader.ReadToEnd());
}
finally {
responseReader.Close();
}
response.Close();
Your code looks good, so I don't think the problem is there... but what I would suggest is the following:
1) Maybe the error is on the URL's other end... so try hitting Google and see if the returned content is good or not.
2) Put a breakpoint at the "responseReader.ReadToEnd()" spot, and see if what's coming out of there is good.
3) If this code above is in an ASPX page... are you making sure to call "Response.End();" after you're last line of code? (not "resposne.close()", but "Response.End()").
I found the problem. It's not with the above code at all, but with the page being called. The page I was calling was inherited from a class whose Page_OnInit method contained the following line: "MyBase.OnLoad(e)", which caused the Page_OnLoad method to be executed twice. Obviously, it should have been MyBase.OnInit(e) instead. I didn't catch it because when I tested the page directly I had to temporarily remove the inheritance from the class because of some other code that would've have prevented me from testing the page directly.
I will now put on my "Dunce" hat and retreat to the corner for a time out. Thanks anyway for the help.