与 ASP.NET Core 中的 FromBody 混淆

Confused with FromBody in ASP.NET Core(与 ASP.NET Core 中的 FromBody 混淆)

问题描述

我有以下 WEB API 方法，并且有一个带有 Angular 的 SPA 模板:

I have the following WEB API method, and have a SPA template with Angular:

[HttpPost]
public IActionResult Post([FromBody]MyViewModel model)

我认为，基于 this 主题，这里不需要使用 [FromBody] ，因为我想从消息体中读取值，所以不需要覆盖默认行为，但是，如果我不这样做't 使用 [FromBody]，来自 Angular 的模型为空.我真的很困惑，既然我使用了默认行为，为什么还要使用 [FromBody]?

I thought, based on this topic, there is no need to use [FromBody] here, since I want to read the value from the message body, so there is no need to override the default behavior, but, if I don't use [FromBody], the model that is coming from Angular is null. I'm really confused, why should I use [FromBody], since I have used the default behavior?

推荐答案

对于任何看到此问题的 .net core 3 - 您需要将 [ApiController] 添加到扩展 ControllerBase 的控制器中.[FromBody] 仅在您使用 MVC 控制器时才需要.

For anyone seeing this issue .net core 3 - you need to add the [ApiController] to the controller where you extend ControllerBase. The [FromBody] is only needed if you're doing an MVC controller.

这会导致正文以您期望的方式自动处理.

This causes the body to get automatically processed in the way you're expecting.

Microsoft 文档ApiController 属性

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