Question

我有两种形式发布到同一URL：http://localhost/foo/bar

<form method="POST" action="http://localhost/foo/bar">
    <input name="someId" value="123" />
</form>

<form method="POST" action="http://localhost/foo/bar">
    <input name="someData" value="345435435" />
</form>

我在FooController中有以下操作：

[HttpPost("bar")]
public IActionResult A([FromForm] string someId)
{
    ...
}

[HttpPost("bar")]
public IActionResult B([FromForm] string someData)
{
    ...
}

但是我得到一个AmbiguousMatchException。我想做的事有可能吗？

Answer 1

我用一个属性解决了它！

public class ParameterConstraint : ActionMethodSelectorAttribute
{
    private readonly string _name;

    public ParameterConstraint(string name)
    {
        _name = name;
    }

    public override bool IsValidForRequest(RouteContext routeContext, ActionDescriptor action)
    {
        return !string.IsNullOrEmpty(routeContext.HttpContext.Request.Form[_name]);
    }
}

[HttpPost("bar")]
[ParameterConstraint("someId")]
public IActionResult A([FromForm] string someId)
{
    ...
}

[HttpPost("bar")]
[ParameterConstraint("someData")]
public IActionResult B([FromForm] string someData)
{
    ...
}

为不同的主体抛出AmbiguousMatchException

1 个答案: