c#-ASP.NET Web API：如果从资源中设置了错误消息,则模型有效

问题是,如果我使用.rsx文件(资源)来提供自定义错误消息,则在ApiController中,ModelState.IsValid始终为true.

这是我的模型：

public class LoginModel
{
    public string Email { get; set; }

    [Required]
    [MinLength(5)]
    public string Password { get; set; }
}

ApiController中的方法：

    [HttpPost]
    [ModelValidationFilter]
    public void Post(LoginModel model)
    {
        var a = ModelState.IsValid;
    }

和过滤器：

public class ModelValidationFilterAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(HttpActionContext actionContext)
    {
        if (actionContext.ModelState.IsValid == false)
        {
            actionContext.Response = actionContext.Request.CreateErrorResponse(HttpStatusCode.BadRequest, actionContext.ModelState);
        }
    }
}

我在POST请求中发送此消息：

{ Email: "asd@asd.com", Password: "a" }

ModelState.IsValid为false,并且响应符合预期：

{
   "Message": "The request is invalid.",
   "ModelState":
   {
       "model.Password":
       [
           "The field Password must be a string or array type with a minimum length of '5'."
       ]
   }
}

但是,如果我在验证属性中使用资源(配置为“公共和嵌入式资源”构建操作)：

public class LoginModel
{
    public string Email { get; set; }

    [Required]
    [MinLength(5, ErrorMessageResourceName = "Test", ErrorMessageResourceType = typeof(Resources.Localization))]
    public string Password { get; set; }
}

(“测试”键仅保留“测试”字符串值)
ModelState.IsValid为true.

资源类是可见的,并且重新共享程序会正确验证ErrorMessageResourceName中提供的字符串.

解决方法:

我尝试了您的解决方案,但我不理解类Resources.Localization.它从哪里来的？
我的解决方案如下所述,并且使用了良好的资源.

模型：

using TestApp.Properties;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;

namespace TestApp.Models
{
    public class LoginModel
    {
        public string Email { get; set; }
        [Required]
        [MinLength(5, ErrorMessageResourceName="Test", ErrorMessageResourceType=typeof(Resources))]
        public string Password { get; set; }
    }
}

ModelValidationFilterAttribute：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Http.Controllers;
using System.Web.Http.Filters;
using System.Net.Http;

namespace TestApp.Controllers
{
    public class ModelValidationFilterAttribute: ActionFilterAttribute
    {
        public override void OnActionExecuting(HttpActionContext actionContext)
        {
            if (actionContext.ModelState.IsValid == false)
            {
                actionContext.Response = actionContext.Request.CreateErrorResponse(HttpStatusCode.BadRequest, actionContext.ModelState);
            }
        }
    }
}

两个资源文件,一个是常规的Resources.resx,其中包含字符串键/值Test / someth;另一个是Resources.de-DE.resx,其中包含字符串键/值Test / something_DE.

使用提琴手我发送了这个：

Header:
User-Agent: Fiddler
Host: localhost:63315
Content-Length: 37
Content-Type: application/json

身体：

{Email:"text@test.com", Password:"a"}

响应为字符串：

HTTP/1.1 400 Bad Request
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/8.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?RDpcV29ya1xDU1xGYkJpcnRoZGF5QXBwXEZiQmRheUFwcDJcYXBpXGxvZ2lu?=
X-Powered-By: ASP.NET
Date: Fri, 28 Jun 2013 14:56:54 GMT
Content-Length: 83

{"Message":"The request is invalid.","ModelState":{"model.Password":["something"]}}

对于de-DE,请求标头为：

User-Agent: Fiddler
Host: localhost:63315
Content-Length: 37
Accept-Language: de-DE
Content-Type: application/json

回应是：

HTTP/1.1 400 Bad Request
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/8.0
X-AspNet-Version: 4.0.30319
X-SourceFiles: =?UTF-8?B?RDpcV29ya1xDU1xGYkJpcnRoZGF5QXBwXEZiQmRheUFwcDJcYXBpXGxvZ2lu?=
X-Powered-By: ASP.NET
Date: Fri, 28 Jun 2013 14:57:39 GMT
Content-Length: 86

{"Message":"The request is invalid.","ModelState":{"model.Password":["something_DE"]}}

如您所见,消息是从本地化资源文件中读取的,带有“ _DE”.

这是您想要实现的目标吗？

亲切的问候.

编辑：
路由配置原为

config.Routes.MapHttpRoute(
          name: "LoginRoute",
          routeTemplate: "api/login",
          defaults: new { controller = "Login", action = "PostLogin" },
          constraints: new { httpMethod = new HttpMethodConstraint(HttpMethod.Post) }
          );

Web.config添加了下一部分：

<system.web>
...
        <globalization culture="auto" uiCulture="auto" />
...
</system.web>

标签：model-validation,asp-net-web-api,data-annotations,c,resources
来源： https://codeday.me/bug/20191123/2065071.html