From 75ceea1652536457235e5a80fc3d2bd43bde287f Mon Sep 17 00:00:00 2001
From: yubaolee <yubaolee@163.com>
Date: Sun, 9 May 2021 21:07:04 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E8=87=AA=E5=AE=9A=E4=B9=89?=
 =?UTF-8?q?=E6=A8=A1=E6=80=81=E9=AA=8C=E8=AF=81=E5=BC=82=E5=B8=B8=E8=BF=94?=
 =?UTF-8?q?=E5=9B=9E=E4=BF=A1=E6=81=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 OpenAuth.WebApi/Model/CustomBadRequest.cs | 50 +++++++++++++++++++++++
 OpenAuth.WebApi/Startup.cs                | 14 +++++--
 2 files changed, 60 insertions(+), 4 deletions(-)
 create mode 100644 OpenAuth.WebApi/Model/CustomBadRequest.cs

diff --git a/OpenAuth.WebApi/Model/CustomBadRequest.cs b/OpenAuth.WebApi/Model/CustomBadRequest.cs
new file mode 100644
index 00000000..a0ede947
--- /dev/null
+++ b/OpenAuth.WebApi/Model/CustomBadRequest.cs
@@ -0,0 +1,50 @@
+using System.Diagnostics;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+
+namespace OpenAuth.WebApi.Model
+{
+    /// <summary>
+    /// 自定义模态验证异常返回信息
+    /// </summary>
+    public class CustomBadRequest : ValidationProblemDetails
+    {
+        
+        public CustomBadRequest(ActionContext context)
+        {
+            Title = "WebAPI客户端传入的参数无效";
+            Detail = "vue客户端（或其他方式）调用WebAPI时传入的参数类型与接口需要的类型不匹配";
+            Status = 400;
+            ConstructErrorMessages(context);
+        }
+        private void ConstructErrorMessages(ActionContext context)
+        {
+            foreach (var keyModelStatePair in context.ModelState)
+            {
+                var key = keyModelStatePair.Key;
+                var errors = keyModelStatePair.Value.Errors;
+                if(errors.Count == 0) continue;
+
+                    if (errors.Count == 1)
+                    {
+                        var errorMessage = GetErrorMessage(errors[0]);
+                        Errors.Add(key, new[] { errorMessage });
+                    }
+                    else
+                    {
+                        var errorMessages = new string[errors.Count];
+                        for (var i = 0; i < errors.Count; i++)
+                        {
+                            errorMessages[i] = GetErrorMessage(errors[i]);
+                        }
+                        Errors.Add(key, errorMessages);
+                    }
+                
+            }
+        }
+        string GetErrorMessage(ModelError error)
+        {
+            return string.IsNullOrEmpty(error.ErrorMessage) ?"The input was not valid.":error.ErrorMessage;
+        }
+    }
+}
diff --git a/OpenAuth.WebApi/Startup.cs b/OpenAuth.WebApi/Startup.cs
index 79a73ac5..b135c2be 100644
--- a/OpenAuth.WebApi/Startup.cs
+++ b/OpenAuth.WebApi/Startup.cs
@@ -41,9 +41,7 @@ namespace OpenAuth.WebApi
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
-            services.Configure<ApiBehaviorOptions>(options => { options.SuppressModelStateInvalidFilter = true; });
-            
-            //在startup中需要强制创建log4net
+           //在startup中需要强制创建log4net
             var loggerFactory = LoggerFactory.Create(builder =>
             {
                 builder.AddLog4Net();                
@@ -115,7 +113,15 @@ namespace OpenAuth.WebApi
                 .ConfigureApiBehaviorOptions(options =>
                 {
                     // 禁用自动模态验证
-                    options.SuppressModelStateInvalidFilter = true;
+                    // options.SuppressModelStateInvalidFilter = true;
+
+                    //启动WebAPI自动模态验证，处理返回值
+                    options.InvalidModelStateResponseFactory = context =>
+                    {
+                        var problems = new CustomBadRequest(context);
+
+                        return new BadRequestObjectResult(problems);
+                    };
                 }).AddNewtonsoftJson(options =>
                 {
                     //忽略循环引用