I am trying to replace Webclient with HttpClient for my current functionality in my project. HttpClient does not give any error but does not delete index from Solr. What i am missing ? It gives me : Missing content type How i can correctly pass the content type ?
WebClient:
public static byte[] deleteIndex(string id)
{
System.Uri uri = new System.Uri(solrCoreConnection + "/update?commit=true");
using (WebClient wc = new WebClient())
{
wc.Headers[HttpRequestHeader.ContentType] = "text/xml";
return wc.UploadData(uri, "POST", Encoding.ASCII.GetBytes("<delete><id>" + id + "</id></delete>"));
}
}
HttpClient: (no errors, but doesn't delete the index)
public static async Task<HttpResponseMessage> deleteIndex(string id)
{
System.Uri uri = new System.Uri(solrCoreConnection + "/update?commit=true");
ResettableLazy<HttpClient> solrClient = new ResettableLazy<HttpClient>(SolrInstanceFactory);
solrClient.Value.DefaultRequestHeaders.Add("ContentType", "text/xml");
byte[] bDelete = Encoding.ASCII.GetBytes("<delete><id>" + id + "</id></delete>");
ByteArrayContent byteContent = new ByteArrayContent(bDelete);
HttpResponseMessage response = await solrClient.Value.PostAsync(uri.OriginalString, byteContent);
var contents = await response.Content.ReadAsStringAsync();
return response;
}
It gives me : Missing content type How i can correctly pass the content type ?
{
"responseHeader":{
"status":415,
"QTime":1},
"error":{
"metadata":[
"error-class","org.apache.solr.common.SolrException",
"root-error-class","org.apache.solr.common.SolrException"],
"msg":"Missing ContentType",
"code":415}}
Well Is your method post or get??
Well anyway here is a better exmaple of how you could build POST and GET
private static readonly HttpClient client = new HttpClient();
// HttpGet
public static async Task<object> GetAsync(this string url, object parameter = null, Type castToType = null)
{
if (parameter is IDictionary)
{
if (parameter != null)
{
url += "?" + string.Join("&", (parameter as Dictionary<string, object>).Select(x => $"{x.Key}={x.Value ?? ""}"));
}
}
else
{
var props = parameter?.GetType().GetProperties();
if (props != null)
url += "?" + string.Join("&", props.Select(x => $"{x.Name}={x.GetValue(parameter)}"));
}
var responseString = await client.GetStringAsync(new Uri(url));
if (castToType != null)
{
if (!string.IsNullOrEmpty(responseString))
return JsonConvert.DeserializeObject(responseString, castToType);
}
return null;
}
// HTTPPost
public static async Task<object> PostAsync(this string url, object parameter, Type castToType = null)
{
if (parameter == null)
throw new Exception("POST operation need a parameters");
var values = new Dictionary<string, string>();
if (parameter is Dictionary<string, object>)
values = (parameter as Dictionary<string, object>).ToDictionary(x => x.Key, x => x.Value?.ToString());
else
{
values = parameter.GetType().GetProperties().ToDictionary(x => x.Name, x => x.GetValue(parameter)?.ToString());
}
var content = new FormUrlEncodedContent(values);
var response = await client.PostAsync(url, content);
var contents = await response.Content.ReadAsStringAsync();
if (castToType != null && !string.IsNullOrEmpty(contents))
return JsonConvert.DeserializeObject(contents, castToType);
return null;
}
And now you simply send your data
// if your method has return data you could set castToType to
// convert the return data to your desire output
await PostAsync(solrCoreConnection + "/update",new {commit= true, Id=5});