所以,我被困在一个奇怪的行为,也就是说,我可以使用Postman(chrome的插件)或使用RESTClient(Firefox的扩展)发送(或POST)数据,
但是无法将其从我的位于项目之外的html文件发送出去.当我在chrome中打开html时显示以下错误：
OPTIONS http://localhost:1176/api/user/ 405 (Method Not Allowed) XMLHttpRequest cannot load http://localhost:1176/api/user/. Invalid HTTP status code 405
我不能弄清楚为什么会发生这种情况.以下是详细信息,您可能需要帮助我解决我的错误：
UserController.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using WebAPIv2.Models;
namespace WebAPIv2.Controllers
{
public class UserController : ApiController
{
static IUserRepository userRepository = new UserRepository();
[HttpGet]
public List<TableUser> GetAllUsers()
{
return userRepository.GetAll();
}
[HttpGet]
public HttpResponseMessage GetUser(int id)
{
TableUser user = userRepository.Get(id);
if (user == null)
{
return Request.CreateErrorResponse(HttpStatusCode.NotFound,"User Not found for the Given ID");
}
else
{
return Request.CreateResponse(HttpStatusCode.OK,user);
}
}
[HttpPost]
public HttpResponseMessage PostUser(TableUser user)
{
user = userRepository.Add(user);
var response = Request.CreateResponse<TableUser>(HttpStatusCode.Created,user);
string uri = Url.Link("DefaultApi",new { id = user.UserId });
response.Headers.Location = new Uri(uri);
return response;
}
[HttpPut]
public HttpResponseMessage PutUser(int id,TableUser user)
{
user.UserId = id;
if (!userRepository.Update(user))
{
return Request.CreateErrorResponse(HttpStatusCode.NotFound,"Unable to Update the User for the Given ID");
}
else
{
return Request.CreateResponse(HttpStatusCode.OK);
}
}
[HttpDelete]
public HttpResponseMessage DeleteProduct(int id)
{
userRepository.Remove(id);
return new HttpResponseMessage(HttpStatusCode.NoContent);
}
}
}
User.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebAPIv2.Models
{
public class User
{
public int UserId { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
}
}
IUserRepository.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace WebAPIv2.Models
{
interface IUserRepository
{
List<TableUser> GetAll();
TableUser Get(int id);
TableUser Add(TableUser user);
void Remove(int id);
bool Update(TableUser user);
}
}
UserRepository.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebAPIv2.Models
{
public class UserRepository : IUserRepository
{
MastarsFriendsMVCDatabaseEntities userEntities;
public UserRepository()
{
userEntities = new MastarsFriendsMVCDatabaseEntities();
}
public List<TableUser> GetAll()
{
//throw new NotImplementedException();
return userEntities.TableUsers.ToList();
}
public TableUser Get(int id)
{
//throw new NotImplementedException();
var users = userEntities.TableUsers.Where(x => x.UserId == id);
if (users.Count() > 0)
{
return users.Single();
}
else
{
return null;
}
}
public TableUser Add(TableUser user)
{
//throw new NotImplementedException();
if (user == null)
{
throw new ArgumentNullException("item");
}
userEntities.TableUsers.Add(user);
userEntities.SaveChanges();
return user;
}
public void Remove(int id)
{
//throw new NotImplementedException();
TableUser user = Get(id);
if (user != null)
{
userEntities.TableUsers.Remove(user);
userEntities.SaveChanges();
}
}
public bool Update(TableUser user)
{
//throw new NotImplementedException();
if (user == null)
{
throw new ArgumentNullException("student");
}
TableUser userInDB = Get(user.UserId);
if (userInDB == null)
{
return false;
}
userEntities.TableUsers.Remove(userInDB);
userEntities.SaveChanges();
userEntities.TableUsers.Add(user);
userEntities.SaveChanges();
return true;
}
}
}
WebApiConfig.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Headers;
using System.Web.Http;
namespace WebAPIv2
{
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
// Web API configuration and services
// Web API routes
config.MapHttpAttributeRoutes();
//config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue("text/html"));
config.Routes.MapHttpRoute(
name: "DefaultApi",routeTemplate: "api/{controller}/{id}",defaults: new { id = RouteParameter.Optional }
);
}
}
}
index.html的：
<!DOCTYPE html>
<html>
<head>
<title>TODO supply a title</title>
<Meta charset="UTF-8">
<Meta name="viewport" content="width=device-width,initial-scale=1.0">
<!--<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>-->
<script src="http://code.jquery.com/jquery-2.1.0.min.js"></script>
</head>
<body>
<script>
$(document).ready(function() {
// jQuery.support.cors = true;
// $.ajax({
// url: "http://localhost:1176/api/user/1",// headers: {"Accept": "application/json"},// type: "GET",// success: function(data) {
// alert(JSON.stringify(data));
// },// error: function() {
// alert("Error");
// }
// });
// });
var user = {
UserName: "Disha",Password: "disha123",FirstName: "Disha",LastName: "Vora",Email: "disha@pixielit.com"
};
$.ajax({
url: 'http://localhost:1176/api/user/',type: 'POST',data: JSON.stringify(user),crossDomain: true,headers: {"Accept":"application/json","Content-Type":"application/json"},success: function(data) {
alert('User added Successfully');
},error: function() {
alert('User not Added');
}
});
});
</script>
</body>
</html>
Web.config文件：
<?xml version="1.0" encoding="utf-8"?> <!-- For more information on how to configure your ASP.NET application,please visit http://go.microsoft.com/fwlink/?LinkId=301879 --> <configuration> <configSections> <!-- For more information on Entity Framework configuration,visit http://go.microsoft.com/fwlink/?LinkID=237468 --> <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection,EntityFramework,Version=5.0.0.0,Culture=neutral,PublicKeyToken=b77a5c561934e089" requirePermission="false" /> </configSections> <appSettings></appSettings> <system.web> <compilation debug="true" targetFramework="4.5"> <assemblies> <add assembly="System.Data.Entity,Version=4.0.0.0,PublicKeyToken=b77a5c561934e089" /> </assemblies> </compilation> <httpRuntime targetFramework="4.5" /> </system.web> <system.webServer> <validation validateIntegratedModeConfiguration="false" /> <modules runAllManagedModulesForAllRequests="true"> <remove name="WebDAVModule" /> </modules> <httpProtocol> <customHeaders> <add name="Access-Control-Allow-Origin" value="*" /> <add name="Access-Control-Request-Headers:" value="*" /> <add name="Access-Control-Request-Method:" value="*" /> <add name="Access-Control-Allow-Methods" value="*" /> <!--<add name="Allow" value="*"/>--> </customHeaders> </httpProtocol> <handlers> <remove name="WebDAV" /> <remove name="ExtensionlessUrlHandler-Integrated-4.0" /> <remove name="OPTIONSVerbHandler" /> <remove name="TRACEVerbHandler" /> <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" /> </handlers> <directoryBrowse enabled="true" /> </system.webServer> <entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory,EntityFramework"> <parameters> <parameter value="v11.0" /> </parameters> </defaultConnectionFactory> </entityFramework> <connectionStrings> <add name="MastarsFriendsMVCDatabaseEntities" connectionString="Metadata=res://*/Model.csdl|res://*/Model.ssdl|res://*/Model.msl;provider=System.Data.sqlClient;provider connection string="data source=WIN-WWU3DMLR6PX\PIXIELIT;initial catalog=MastarsFriendsMVCDatabase;persist security info=True;user id=sa;password=sa_12345;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" /> </connectionStrings> </configuration>
解决方法
WebApi可能会阻止CORS请求.要在WebApi上启用CORS,请使用Microsoft.AspNet.WebApi.Cors包.有关详细信息,请查看
http://www.asp.net/web-api/overview/security/enabling-cross-origin-requests-in-web-api
