英文:
I am looking for IHttpClientFactory -> HttpMethod.Post example
问题
我想使用 IHttpClientFactory 来消耗我的 API。
有很多关于如何使用 SendAsync 请求 API 数据的示例，但如果我想使用 IHttpClientFactory 来发送数据怎么办？
我尝试了类似这样的方式，但我应该在哪里传递对象？
var request = new HttpRequestMessage(HttpMethod.Post, "https://localhost:44357/api/users/validateuser");
var client = _httpClientFactory.CreateClient();
var response = await client.SendAsync(request);
英文:
I want to use IHttpClientFactory for consuming my API.
There are so many examples on how you can use SendAsync to request data from the API but what if I want to post data using IHttpClientFactory?
I tried something like this but then where do I pass the object?
var request = new HttpRequestMessage(HttpMethod.Post, "https://localhost:44357/api/users/validateuser");
var client = _httpClientFactory.CreateClient();
var response = await client.SendAsync(request);
答案1
得分: 2
这里是一个POST请求的示例，它将一个序列化的对象传递给API，并接收JSON格式的响应以进行反序列化：
var result;
try
{
HttpClient client = _httpClientFactory.CreateClient("MyAPI");
//等待响应的超时时间为2分钟
client.Timeout = new TimeSpan(0, 2, 0);
//创建一个HttpRequestMessage对象并传递给SendAsync()
HttpRequestMessage message = new HttpRequestMessage();
message.Headers.Add("Accept", "application/json");
message.Content = new StringContent(JsonConvert.SerializeObject(myObj), System.Text.Encoding.UTF8, "application/json");
message.Method = HttpMethod.Post;
message.RequestUri = new Uri(client.BaseAddress.ToString() + "someapiendpoint");
HttpResponseMessage response = await client.SendAsync(message);
result = await response.Content.ReadAsStringAsync();
//将结果反序列化为适当的对象类型
}
catch (Exception ex)
{
//记录异常
}
英文:
Here's an example of a POST, it passes a serialized object to the API and receives back JSON for deserialization:
var result;
try
{
HttpClient client = _httpClientFactory.CreateClient("MyAPI");
//2 minute timeout on wait for response
client.Timeout = new TimeSpan(0, 2, 0);
//Create an HttpRequestMessage object and pass it into SendAsync()
HttpRequestMessage message = new HttpRequestMessage();
message.Headers.Add("Accept", "application/json");
message.Content = new StringContent(JsonConvert.SerializeObject(myObj), System.Text.Encoding.UTF8, "application/json");
message.Method = HttpMethod.Post;
message.RequestUri = new Uri(client.BaseAddress.ToString() + "someapiendpoint");
HttpResponseMessage response = await client.SendAsync(message);
result = await response.Content.ReadAsStringAsync();
//deserialize the result into proper object type
}
catch (Exception ex)
{
//Log exception
}
答案2
得分: 1
var request = new HttpRequestMessage(HttpMethod.Post, "https://localhost:44357/api/users/validateuser");
request.Content = foo; // 这里是传递载荷的地方
`Content` 是 `HttpContent` 类型，它是一个抽象类，无法直接实例化，但有多个继承类：
`ByteArrayContent`、`MultipartContent`、`ReadOnlyMemoryContent`、`StreamContent`、`FormUrlEncodedContent`、`MultipartFormDataContent` 和 `StringContent`。最常用的是 `StringContent`，因此您可以使用任何类型的 JSON 序列化器（如 `Newtonsoft`、`System.Text.Json` 序列化器等）将 C# 对象序列化为 JSON 字符串。
使用 `Newtonsoft.Json` 的示例：
using Newtonsoft.Json;
var jsonContent = JsonConvert.SerializeObject(object);
request.Content = new StringContent(jsonContent);
英文:
var request = new HttpRequestMessage(HttpMethod.Post, "https://localhost:44357/api/users/validateuser");
request.Content = foo; //is where you pass the payload
Content is the type of HttpContent which is an abstract class you cannot instantiate it, but you have multiple classes inheriting from it:
ByteArrayContent, MultipartContent, ReadOnlyMemoryContent, StreamContent, FormUrlEncodedContent, MultipartFormDataContent and StringContent. The most common is StringContent so you can serialize your C# object into a JSON string using any kind of JSON serializer (Newtonsoft, System.Text.Json serializer, etc).
Example with Newtonsoft.Json:
using Newtonsoft.Json;
var jsonContent = JsonConvert.SerializeObject(object);
request.Content = new StringContent(jsonContent);
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