WebAPi获取请求头中对应键值

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/// <summary>
/// 依据键获取请求头中值数据
/// </summary>
/// <param name="request"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string GetHeader(this HttpRequestMessage request, string key)
{
    IEnumerable<string> keys = null;
    if (!request.Headers.TryGetValues(key, out keys))
        return null;
 
    return keys.First();
}

 

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