如何在.Net Core中为错误状态代码401返回自定义错误消息? [英] How can I return custom error message for error status code 401 in .Net Core?

问题描述

请帮助我显示.Net Core WebApi中错误状态代码401的自定义错误消息.

Please help me to display a custom error message for an error status code 401 in .Net Core WebApi.

推荐答案

ASP Core文档介绍了如何处理自定义错误响应:

The ASP Core documentation explains how to handle custom error responses:

https://docs.microsoft.com/zh-CN/aspnet/core/fundamentals/error-handling?view=aspnetcore-3.1#usestatuscodepages

在您的情况下，可以在启动 Configure 方法中尝试添加 app.UseStatusCodePages (添加对 Microsoft.AspNetCore.Http 的引用)

In your case, you could try app.UseStatusCodePages in your startup Configure method(add a reference to Microsoft.AspNetCore.Http)

if (env.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}
else
{
    app.UseHsts();
}
app.UseStatusCodePages(async context =>
{
    if (context.HttpContext.Response.StatusCode == 401)
    {
        await context.HttpContext.Response.WriteAsync("Custom Unauthorized request");
    }
});
//other middlewars

动作:

[HttpGet]
public ActionResult Get()
{
   return Unauthorized();
}

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