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WebApi系列~通过HttpClient来调用Web Api接口~续~实体参数的传递

上一讲中介绍了使用HttpClient如何去调用一个标准的Web Api接口,并且我们知道了Post,Put方法只能有一个FromBody参数,再有多个参数时,上讲提到,需要将它封装成一个对象进行传递,而这讲主要围绕这个话题来说,接口层添加一个新类User_Info,用来进行数据传递,而客户端使用网页ajax和控制台HttpClient的方式分别进行实现,Follow me!

下面定义一个复杂类型对象

   public class User_Info    {        public int Id { get; set; }        public string Name { get; set; }        public string Info { get; set; }    }

下面修改上次的api部分,让它对这个对象进行操作

    [CorsAttribute("http://localhost:3321")]    public class RegisterController : ApiController    {        public static List<User_Info> Model = new List<User_Info>()        {            new User_Info{Id=1,Name="zzl",Info="zzl是楼主"},            new User_Info{Id=2,Name="zhz",Info="zhz是zzl的儿子"},            new User_Info{Id=3,Name="zql",Info="zql是zzl的妻子"},            new User_Info{Id=4,Name="bobo",Info="bobo是zzl的朋友"}        };        // GET api/values        public IEnumerable<User_Info> Get()        {            return Model;        }        // GET api/values/5        public User_Info Get(int id)        {            var entity = Model.FirstOrDefault(i => i.Id == id);            return entity;        }        // GET api/values/5?leval=1        public HttpResponseMessage Get(int id, int leval)        {            return new HttpResponseMessage(HttpStatusCode.OK)            {                Content = new StringContent("<em style=‘color:red‘>成功响应(id,level)</em>", System.Text.Encoding.UTF8, "text/html")            };        }        // POST api/values        public HttpResponseMessage Post([FromBody]User_Info value)        {            Model.Add(new User_Info            {                Id = value.Id,                Info = value.Info,                Name = value.Name,            });            //用户登陆相关            return new HttpResponseMessage(HttpStatusCode.OK)            {                Content = new StringContent("添加数据成功,用户ID:" + value.Id, System.Text.Encoding.UTF8, "text/plain")            };        }        // PUT api/values?userid=5        public HttpResponseMessage Put(int userid, [FromBody]User_Info value)        {            var entity = Model.FirstOrDefault(i => i.Id == userid);            entity.Info = value.Info;            entity.Name = value.Name;            return new HttpResponseMessage(HttpStatusCode.OK)            {                Content = new StringContent("修改数据成功,主键:" + userid + ",对象:" + value.Name)            };        }        // DELETE api/values/5        public HttpResponseMessage Delete(int id)        {            Model.Remove(Model.FirstOrDefault(i => i.Id == id));            return new HttpResponseMessage(HttpStatusCode.OK)            {                Content = new StringContent("删除数据成功")            };        }

而最关键的地方还是在各个客户端调用的时候,首先,你不能指望客户端去引用你的程序集,因为,不能平台无法实现这种引用(java & c#,js & C#,php & c#),所以,在调用时需要有它们各自的方法,而JS的ajax调用时,直接使用json对象即可,键名对象

实体的属性,在使用HttpClient时,直接为FormUrlEncodedContent对象赋一个键值对的集合即可,下面分别介绍一下

HTML的JS实现

     $.ajax({            url: "http://localhost:52824/api/register",            type: "POST",            data: { Id: 5, Name: ‘新来的‘, Info: ‘大家好‘ },//这里键名称必须为空,多个参数请传对象,api端参数名必须为value            success: function (data) {                console.log("post:" + data);            }        });        $.ajax({            url: "http://localhost:52824/api/register",            type: "GET",            success: function (data) {                for (var i in data) {                    console.log(data[i].Id + " " + data[i].Name);                }            }        });

结果截图

Console程序中使用HttpClient对象进行实现

       /// <summary>        /// HttpClient实现Post请求        /// </summary>        static async void dooPost()        {            string url = "http://localhost:52824/api/register";             //设置HttpClientHandler的AutomaticDecompression            var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };            //创建HttpClient(注意传入HttpClientHandler)            using (var http = new HttpClient(handler))            {                //使用FormUrlEncodedContent做HttpContent                var content = new FormUrlEncodedContent(new Dictionary<string, string>()                       {    {"Id","6"},                     {"Name","添加zzl"},                     {"Info", "添加动作"}//键名必须为空                 });                //await异步等待回应                var response = await http.PostAsync(url, content);                //确保HTTP成功状态值                response.EnsureSuccessStatusCode();                //await异步读取最后的JSON(注意此时gzip已经被自动解压缩了,因为上面的AutomaticDecompression = DecompressionMethods.GZip)                Console.WriteLine(await response.Content.ReadAsStringAsync());            }        }        /// <summary>        /// HttpClient实现Get请求        /// </summary>        static async void dooGet()        {            string url = "http://localhost:52824/api/register?id=1";            //创建HttpClient(注意传入HttpClientHandler)            var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };            using (var http = new HttpClient(handler))            {                //await异步等待回应                var response = await http.GetAsync(url);                //确保HTTP成功状态值                response.EnsureSuccessStatusCode();                //await异步读取最后的JSON(注意此时gzip已经被自动解压缩了,因为上面的AutomaticDecompression = DecompressionMethods.GZip)                Console.WriteLine(await response.Content.ReadAsStringAsync());            }        }        /// <summary>        /// HttpClient实现Put请求        /// </summary>        static async void dooPut()        {            var userId = 1;            string url = "http://localhost:52824/api/register?userid=" + userId;            //设置HttpClientHandler的AutomaticDecompression            var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };            //创建HttpClient(注意传入HttpClientHandler)            using (var http = new HttpClient(handler))            {                //使用FormUrlEncodedContent做HttpContent                var content = new FormUrlEncodedContent(new Dictionary<string, string>()                       {                   {"Name","修改zzl"},                   {"Info", "Put修改动作"}//键名必须为空                });                //await异步等待回应                var response = await http.PutAsync(url, content);                //确保HTTP成功状态值                response.EnsureSuccessStatusCode();                //await异步读取最后的JSON(注意此时gzip已经被自动解压缩了,因为上面的AutomaticDecompression = DecompressionMethods.GZip)                Console.WriteLine(await response.Content.ReadAsStringAsync());            }        }

 

WebApi系列~通过HttpClient来调用Web Api接口~续~实体参数的传递