今天在写一个业务类时，往里传入了一个整型的参数，然而Service获得的参数始终是0。

查看了相关文档之后，发现，web api本身其实是支持基本数据类型的，而abp内部则没有对简单类型进行处理。所以无法获取参数，必须将其封装成一个dto类以获取值。

这样的操作似乎有点浪费，为了一个简单的参数封装一个dto.

web api 参数绑定方式：

When do we use which?

Here are the basic rules to determine whether a parameter is read with model binding or a formatter:

  1. If the parameter has no attribute on it, then the decision is made purely on the parameter’s .NET type. “Simple types” uses model binding. Complex types uses the formatters. A “simple type” includes: primitives, TimeSpan, DateTime, Guid, Decimal, String, or something with a TypeConverter that converts from strings.
  2. You can use a [FromBody] attribute to specify that a parameter should be from the body.
  3. You can use a [ModelBinder] attribute on the parameter or the parameter’s type to specify that a parameter should be model bound. This attribute also lets you configure the model binder. [FromUri] is a derived instance of [ModelBinder] that specifically configures a model binder to only look in the URI.
  4. The body can only be read once. So if you have 2 complex types in the signature, at least one of them must have a [ModelBinder] attribute on it.

相关连接:

abp 不支持基本类型数据参数的解释

web api 支持的参数类型