.net core在服务器端获取api传递的参数过程

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我是靠谱客的博主笨笨哈密瓜，这篇文章主要介绍.net core在服务器端获取api传递的参数过程，现在分享给大家，希望可以做个参考。

这篇文章主要介绍了.net core在服务器端获取api传递的参数过程,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

在 ActionFilterAttribute 的OnActionExecutionAsync 中使用如下代码从流中读取用户参数

复制代码

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//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

复制代码

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
 
  }

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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
 
  }