asp.net之使用web API

来源：互联网发布：淘宝店家可能亏本吗编辑：程序博客网时间：2024/05/29 19:22

http Get 方法请求获取数据，整个web API 的请求处理基于MVC框架

using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Net.Http;using System.Web.Http;using WebAPI.Models;namespace WebAPI.Controllers{    public class UsersController : ApiController    {        /// <summary>        /// User Data List        /// </summary>        private readonly List<Users> _userList = new List<Users>        {            new Users {UserID = 1, UserName = "Superman", UserEmail = "Superman@cnblogs.com"},            new Users {UserID = 2, UserName = "Spiderman", UserEmail = "Spiderman@cnblogs.com"},            new Users {UserID = 3, UserName = "Batman", UserEmail = "Batman@cnblogs.com"}        };        // GET api/Users        public IEnumerable<Users> Get()        {            return _userList;        }        // GET api/Users/5        public Users GetUserByID(int id)        {            var user = _userList.FirstOrDefault(users => users.UserID == id);            if (user == null)            {                throw new HttpResponseException(HttpStatusCode.NotFound);            }            return user;        }        //GET api/Users/?username=xx        public IEnumerable<Users> GetUserByName(string userName)        {            return _userList.Where(p => string.Equals(p.UserName, userName, StringComparison.OrdinalIgnoreCase));        }    }}

构造 user list ，实现三个方法。

POST数据

实现一个User添加的功能，接受的类型为User实体，而我们POST的数据为对应的JSON数据。

//POST api/Users/Users Entity Jsonpublic Users Add([FromBody]Users users){    if (users == null)    {        throw new HttpRequestException();    }    _userList.Add(users);    return users;}

HttpClient + ASP.NET API 通过Json.NET 将需要传递的数据序列化为json字符串的

var requestJson = JsonConvert.SerializeObject(new { startId = 1, itemcount = 3 });HttpContent httpContent = new StringContent(requestJson);httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");var httpClient = new HttpClient();var responseJson = httpClient.PostAsync("http://localhost:9000/api/demo/sitelist", httpContent)    .Result.Content.ReadAsStringAsync().Result;

升级版为：

var responseJson = new HttpClient().PostAsJsonAsync("http://test.cnblogs.cc/api/demo/sitelist",new { startId = 1, itemcount = 3 }).Result.Content.ReadAsStringAsync().Result;

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