在 ActionFilterAttribute 的OnActionExecutionAsync 中使用如下代码从流中读取用户参数
//从文件流中读取传递测参数
using (var ms = new MemoryStream())
{
context.HttpContext.Request.Body.Seek(0, 0);//将读取指针迻到开始位置
context.HttpContext.Request.Body.CopyTo(ms);
var b = ms.ToArray();
var postParamsString = Encoding.UTF8.GetString(b);
}
虽然以前就知道是从流中读取，但是.net core的比较难找，找了将近两个小时才找到从流中读取参数的方法，关键是这句：context.HttpContext.Request.Body.Seek(0, 0);不然读取的内容为空
完整代码
public class SignValidateAttribute : ActionFilterAttribute
{
#region
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="next"></param>
/// <returns></returns>
public async override Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
//从文件流中读取传递测参数
using (var ms = new MemoryStream())
{
context.HttpContext.Request.Body.Seek(0, 0);
context.HttpContext.Request.Body.CopyTo(ms);
var b = ms.ToArray();
var postParamsString = Encoding.UTF8.GetString(b);
await next();
}
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="next"></param>
/// <returns></returns>
public override Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next)
{
//string dataJson = GetContextJson(context.);
return base.OnResultExecutionAsync(context, next);
}
#endregion
}