使用HttpClient C# .Net6发送自定义内容类型
你好，Stackoverflow社区。我希望这里有人能帮我！！
我试图与Zoopla集成，该API要求post请求发送以下自定义的内容类型。(我把证书方面的事情做得很好)
application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json我尝试了以下方法，但没有成功(它们都会导致以下错误)
System.FormatException: 'The format of value 'application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json' is invalid.'
- 的初始方法是在RequestMessage的内容中设置它。
var HttpRequestMessage=新的RequestUri (){RequestUri=新Uri(“https://realtime-listings-api.webservices.zpg.co.uk/sandbox/v1/listing/list"”，Method = HttpMethod.Post，Content = new (jsonBody，Encoding.UTF8，"application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json") };
- ，当它不起作用时，我尝试通过默认的标题来设置它(下面的
client来自ClientFactory)
client.DefaultRequestHeaders.Add("Content-Type"，"application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json");
- 我的最后一次尝试是在没有验证的情况下设置它
client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type"，"application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json");
，
- ，我刚刚尝试了另一种不幸不起作用的东西
string header = "application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json"；client.DefaultRequestHeaders.Accept.Add(新的client.DefaultRequestHeaders.Accept.Add)
我真是不知所措！！救命:-)
回答 1
Stack Overflow用户
发布于 2022-10-11 18:27:21
Content-Type设置在内容上，而不是在DefaultRequestHeaders中。您可以尝试对请求内容使用TryAddWithoutValidation：
var content = new StringContent("hello");
content.Headers.ContentType = null; // zero out default content type
content.Headers.TryAddWithoutValidation("Content-Type", "application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json");
var client = new HttpClient(); // note: use IHttpClientFactory in non-example code
var response = await client.PostAsync("https://postman-echo.com/post", content);
Console.WriteLine(response.StatusCode); // OK
Console.WriteLine(await response.Content.ReadAsStringAsync());
// {"args":{},"data":{},"files":{},"form":{},"headers":{"x-forwarded-proto":"https","x-forwarded-port":"443","host":"postman-echo.com","x-amzn-trace-id":"Root=1-6345b568-22cc353761f361483f2c3157","content-length":"5","content-type":"application/json;profile=http://realtime-listings.webservices.zpg.co.uk/docs/v1.2/schemas/listing/list.json"},"json":null,"url":"https://postman-echo.com/post"}https://stackoverflow.com/questions/71285584
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