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

这篇关于与 ASP.NET Core 中的 FromBody 混淆的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！