/// <summary>
/// 获取请求参数。
/// </summary>
/// <param name="context">处理上下文。</param>
/// <exception cref="ArgumentNullException"><paramref name="context"/> 为 null。</exception>
/// <returns>请求参数。</returns>
public static IDictionary <string, string> GetRequestParameters(this IHandlerContext context)
{
var parameters = context
.NotNull(nameof(context))
.Get <IDictionary <string, string> >("Rabbit.WeiXin.RequestParameters");
if (parameters != null)
{
return(parameters);
}
parameters = new Dictionary <string, string>();
context.SetRequestParameters(parameters);
return(parameters);
}