asp.net webapi 无法使用多个post,浏览器不支持put delete,405错误

asp.net mvc .net framework中使用 webapi ，无法使用多个post，并且浏览器并不是全支持put和delete。

解决方法：首先改变微软提供的webapi默认配置路由：

using Newtonsoft.Json.Serialization;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Formatting;
using System.Web;
using System.Web.Http;

namespace EasyUICRUD.App_Start
{
    public class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            // Web API 配置和服务
            // Web API configuration and services
            var json = config.Formatters.JsonFormatter;
            // 解决json序列化时的循环引用问题
            json.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
            // 干掉XML序列化器
            config.Formatters.Remove(config.Formatters.XmlFormatter);

            var jsonFormatter = config.Formatters.OfType<JsonMediaTypeFormatter>().First();
            jsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            // Web API 路由
            config.MapHttpAttributeRoutes();

            //config.Routes.MapHttpRoute(
            //    name: "DefaultApi",
            //    routeTemplate: "api/{controller}/{action}/{id}",
            //    defaults: new { id = RouteParameter.Optional }
            //);
        }
    }
}

或者直接注释掉，用特性路由。再使用[HttpPost]代替put和delete。如果不配置路由，会报错找不到合适的api。

public class UsersController : ApiController
    {
        private EasyUICRUDContext db = new EasyUICRUDContext();

        // GET: api/Users
        [HttpGet]
        [Route("user/getall")]
        public IQueryable<User> GetUsers()
        {
            return db.Users;
        }

        // GET: api/Users/5
        [HttpGet]
        [Route("user/get")]
        public IHttpActionResult GetUser(int id)
        {
            User user = db.Users.Find(id);
            if (user == null)
            {
                return NotFound();
            }

            return Ok(user);
        }

        // PUT: api/Users/5
        [HttpPost]
        [Route("user/put")]
        public IHttpActionResult PutUser(int id, User user)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != user.Id)
            {
                return BadRequest();
            }

            db.Entry(user).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!UserExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }

        // POST: api/Users
        [HttpPost]
        [Route("user/post")]
        public IHttpActionResult PostUser(User user)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.Users.Add(user);
            db.SaveChanges();

            return CreatedAtRoute("DefaultApi", new { id = user.Id }, user);
        }

        [HttpPost]
        [Route("user/delete")]
        public IHttpActionResult DeleteUser(int id)
        {
            User user = db.Users.Find(id);
            if (user == null)
            {
                return NotFound();
            }

            db.Users.Remove(user);
            db.SaveChanges();

            return Ok(user);
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                db.Dispose();
            }
            base.Dispose(disposing);
        }

        private bool UserExists(int id)
        {
            return db.Users.Count(e => e.Id == id) > 0;
        }
    }