如何在.net core 2.2 Web API中传递带有“禁止”响应的字符串

Question

运行正常：

context.Result = new ForbidResult(); 

但是我想传递一条带有“禁止”响应的消息，如下所示：

context.Result = new ForbidResult("Forbidden");

在.net core 2 Web API中。但是当我在这段代码上面编写这段代码时，我得到了

500内部服务器错误

因此，任何人都可以帮助我如何执行上面的代码行。

样例代码

public class ClaimRequirementFilter : Microsoft.AspNetCore.Mvc.Filters.IAuthorizationFilter
{
    public void OnAuthorization(AuthorizationFilterContext context)
    {
          // working code
          context.Result = new ForbidResult();

          // Code with error (500 Internal Server Error)
          context.Result = new ForbidResult("Forbidden");
     }
 }

Answer 1

您只需使用ObjectResult返回带有状态代码的自定义响应即可。

查看语法，

return new ObjectResult("Message") {StatusCode = YOUR_STATUS_CODE };

例子：

public async Task<IActionResult> Post([FromBody] SomeData _data)
{
     // do your stuff

    // return forbidden with custom message
    return new ObjectResult("Forbidden") { StatusCode = 403};
}

Answer 2

我创建了这两个类（1. CustomError和2. CustomUnauthorizedResult），并使用这两个类来处理Authorization。您可以在此处传递动态消息和状态代码。

public class CustomError
{
    public string Error { get; }

    public CustomError(string message)
    {
        Error = message;
    }
}

public class CustomUnauthorizedResult : JsonResult
{
    public CustomUnauthorizedResult(string message, int statusCode) : base(new CustomError(message))
    {
        StatusCode = statusCode;
    }
}

public class ClaimRequirementFilter : Microsoft.AspNetCore.Mvc.Filters.IAuthorizationFilter
{
    public void OnAuthorization(AuthorizationFilterContext context)
    {
        context.Result = new CustomUnauthorizedResult("Authorization failed.", statusCode:403);
    }
}