C# ASP.NET Web API HTTP 400 错误请求
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ASP.NET Web API HTTP 400 Bad Request
提问by MR.ABC
Always get 400 Bad Requeston a valid request. Maybe some hints ? Need to fix this very badly.
总是得到400 Bad Request一个有效的请求。也许有一些提示？需要非常糟糕地解决这个问题。
Controller
控制器
public class MyController : ApiController
{
public IEnumerable<string> GetAll(string language)
{
return new [] {"a", "b", "c"};
}
}
Request
要求
$.ajax({
type: "POST",
url: "http://localhost:5378/Api/MyController/GetAll",
dataType: "json",
contentType: "application/json; charset=utf-8",
data: { "language": language },
cache: false,
complete: function (xhr) {
console.output(xhr.status.toString());
}
});
WebApiConfig
网络接口配置
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
var appXmlType = config.Formatters.XmlFormatter.SupportedMediaTypes.FirstOrDefault(t => t.MediaType == "application/xml");
config.Formatters.XmlFormatter.SupportedMediaTypes.Remove(appXmlType);
}
Webconfig
网络配置
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<connectionStrings>
<add name="DataConnection" providerName="System.Data.SqlClient" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-web-data;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\web-data.mdf" />
<add name="AuthConnection" providerName="System.Data.SqlClient" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=aspnet-web-auth;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\web-auth.mdf" />
</connectionStrings>
<appSettings>
<add key="webpages:Version" value="2.0.0.0" />
<add key="webpages:Enabled" value="true" />
<add key="PreserveLoginUrl" value="true" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings>
<system.web>
<roleManager enabled="true" defaultProvider="SimpleRoleProvider">
<providers>
<clear />
<add name="SimpleRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</providers>
</roleManager>
<membership defaultProvider="SimpleMembershipProvider">
<providers>
<clear />
<add name="SimpleMembershipProvider" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</providers>
</membership>
<httpRuntime targetFramework="4.5" />
<pages>
<namespaces>
<add namespace="System.Web.Helpers" />
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Optimization" />
<add namespace="System.Web.Routing" />
<add namespace="System.Web.WebPages" />
</namespaces>
</pages>
<compilation debug="true" />
</system.web>
<system.webServer>
<directoryBrowse enabled="true" />
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
</entityFramework>
<system.webServer>
<staticContent>
<mimeMap fileExtension=".json" mimeType="application/json" />
</staticContent>
</system.webServer>
</configuration>
采纳答案by Martin Booth
Web api uses verbs to identify the action unless you configure it otherwise.
除非您另行配置，否则 Web api 使用动词来标识操作。
GetAll is not required in the url since web api will automatically find a method on your controller which starts with Get, when you use the GET http verb
url 中不需要 GetAll，因为当您使用 GET http 动词时，Web api 会自动在您的控制器上找到一个以 Get 开头的方法
Its easy to confuse the routing in asp .net MVC with web api.
很容易将 asp .net MVC 中的路由与 web api 混淆。
Request:
要求：
$.ajax({
type: "POST",
url: "http://localhost:5378/Api/MyController",
dataType: "json",
contentType: "application/json; charset=utf-8",
data: { "language": language },
cache: false,
complete: function (xhr) {
console.output(xhr.status.toString());
}
});
回答by Justin Helgerson
Your controller class is called MyController. Therefore your URL should be calling to Myand not MyController.
您的控制器类称为MyController. 因此，您的 URL 应该调用 toMy而不是MyController。
type: "GET",
url: "http://localhost:5378/Api/My/"
Microsoft provides some good informationon understanding the routing conventions.
Edit: As Martin points out, if your method is a "Get" method, then your Ajax call shouldn't specify POST and it doesn't need to specify the GetAllbecause of the naming convention.
编辑：正如 Martin 指出的那样，如果您的方法是“Get”方法，那么您的 Ajax 调用不应指定 POST 并且GetAll由于命名约定它不需要指定。
