我想将此数据发布到Web API服务器:
public sealed class SomePostRequest
{
public int Id { get; set; }
public byte[] Content { get; set; }
}
将以下代码用于服务器:
[Route("Incoming")]
[ValidateModel]
public async Task<IHttpActionResult> PostIncomingData(SomePostRequest requestData)
{
// POST logic here
}
这-对于客户:
var client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:25001/");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var content = new FormUrlEncodedContent(new Dictionary<string, string>
{
{ "id", "1" },
{ "content", "123" }
});
var result = await client.PostAsync("api/SomeData/Incoming", content);
result.EnsureSuccessStatusCode();
一切正常(至少,调试器在
PostIncomingData
的断点处停止)。由于存在
byte
数组,因此我不想将其序列化为JSON,并且不想将其作为二进制数据发布以减少网络流量(类似于application/octet-stream
)。如何做到这一点?
我尝试过使用
MultipartFormDataContent
,但是看起来我不明白,MultipartFormDataContent
如何匹配 Controller 方法的签名。例如,将内容替换为此:
var content = new MultipartFormDataContent();
content.Add(new FormUrlEncodedContent(new Dictionary<string, string> { { "id", "1" } }));
var binaryContent = new ByteArrayContent(new byte[] { 1, 2, 3 });
binaryContent.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
content.Add(binaryContent, "content");
var result = await client.PostAsync("api/SomeData/Incoming", content);
result.EnsureSuccessStatusCode();
导致错误415(“不支持的媒体类型”)。
最佳答案
WebAPI v2.1及更高版本supports BSON (Binary JSON) out of the box,甚至包括MediaTypeFormatter
。这意味着您可以以二进制格式发布整个邮件。
如果要使用它,则需要在WebApiConfig
中进行设置:
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Formatters.Add(new BsonMediaTypeFormatter());
}
}
现在,您在客户端使用相同的
BsonMediaTypeFormatter
序列化您的请求:public async Task SendRequestAsync()
{
var client = new HttpClient
{
BaseAddress = new Uri("http://www.yourserviceaddress.com");
};
// Set the Accept header for BSON.
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/bson"));
var request = new SomePostRequest
{
Id = 20,
Content = new byte[] { 2, 5, 7, 10 }
};
// POST using the BSON formatter.
MediaTypeFormatter bsonFormatter = new BsonMediaTypeFormatter();
var result = await client.PostAsync("api/SomeData/Incoming", request, bsonFormatter);
result.EnsureSuccessStatusCode();
}
或者,您可以使用Json.NET将您的类序列化为BSON。然后,指定要使用“application/bson”作为“Content-Type”:
public async Task SendRequestAsync()
{
using (var stream = new MemoryStream())
using (var bson = new BsonWriter(stream))
{
var jsonSerializer = new JsonSerializer();
var request = new SomePostRequest
{
Id = 20,
Content = new byte[] { 2, 5, 7, 10 }
};
jsonSerializer.Serialize(bson, request);
var client = new HttpClient
{
BaseAddress = new Uri("http://www.yourservicelocation.com")
};
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/bson"));
var byteArrayContent = new ByteArrayContent(stream.ToArray());
byteArrayContent.Headers.ContentType = new MediaTypeHeaderValue("application/bson");
var result = await client.PostAsync(
"api/SomeData/Incoming", byteArrayContent);
result.EnsureSuccessStatusCode();
}
}
关于c# - 使用HttpClient将字节数组发布到Web API服务器,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/32184360/