Csharp . NET 8 HttpClient post参数将其情况更改为camel'

发布于04月08日

I have a strange issue using IhttpClientFactory named client.
The "POST" body parameter are changing it's case to camel "initCap". I have written some Handlers (delegate handler) for adding "http headers", "exception handling" and "audit logging".
The parameters are changing the case to camelcase.

我的模特类

 public class PostRequest
 {
    [DataMember(Name = "Request", EmitDefaultValue = false)]
    public Request? Request { get; set; }
 }

我知道这个属性是用于Newtonsof json的，但也try 了JsonProperty，但没有工作. .....

为了获得post调用的响应(在一个通用的calss方法中，

var httpContent = await client.PostAsJsonAsync(resource, requestBody, cancellationToken);
return await httpContent.Content.ReadFromJsonAsync<T>(cancellationToken: cancellationToken);

有没有人遇到过类似的问题？

推荐答案

默认情况下，PostAsJsonAsync使用JsonSerializerDefaults.Web作为序列化选项，这将导致Camel大小写属性名和data contracts (DataMemeberAttribute) are not supported by System.Text.Json.如果您想使用另一组序列化设置(即Pascal大小写默认序列化)—您可以提供它们.例如:

var httpContent = await client.PostAsJsonAsync(
    resource, 
    requestBody,
    new JsonSerializerOptions(), // TODO: configure as needed and reuse the options
    cancellationToken);

或者使用JsonPropertyNameAttribute(将需要标记所有需要"非默认"处理的属性).例如:

public class PostRequest
{
    [JsonPropertyName("Request")] // should be Pascal case no matter which System.Text.Json settings used
    public Request? Request { get; set; } 
}

另见: