C# webapi简单学习

转自：https://www.cnblogs.com/zyg316/p/10491242.html

创建WebApi项目：

在VS工具中创建一个ASP.NET Web应用程序

 

选择Webapi

一个webapi项目就创建好了

这里简单的写一个post和get两种请求的方法，由于post请求参数需要参数体的形式，一般用json作为参数，这里简单创建一个实体类，放上参数，我这里就放一个，可根据项目自己设置相应的参数

注意的是，post请求的时候，json里的键值对 键的名字要和实体中的一样，过来实体接收参数会自动将json值拆分到各个对应的名字上

 

然后先写post方法，记得要写请求方式[HttpPost]，注意这个参数的写法

 

[HttpPost]
public string demo([FromBody]Contact name) 
{
     string nn = name.Name;
     string result = string.Empty;
     result = "您的参数是：" + nn;
     return result;
}

 

Get方法可以直接获取参数，注意[HttpGet]

 

[HttpGet]
public string wxs(string name)
{
    string result = string.Empty;
    result = "{Name:\"" + name + "\"}";
    return result;
}

 

一个简单的webapi就写完了，现在试试请求这个webapi，我这里用C#控制台应用程序写一个简单的调用

为了方便测试，我直接将这个webapi发布到了本机的IIS上

Post请求：

 

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {

            string ss = HttpPost("http://localhost:8097/api/Contact/demo", "{\"Name\":\"zhangsan\"}");

            
            Console.WriteLine(ss);



            Console.ReadLine();
        }






        public static string HttpPost(string url, string body)
        {
            Encoding encoding = Encoding.UTF8;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.Accept = "text/html, application/xhtml+xml, */*";
            request.ContentType = "application/json";

            byte[] buffer = encoding.GetBytes(body);
            request.ContentLength = buffer.Length;
            request.GetRequestStream().Write(buffer, 0, buffer.Length);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
            {
                return reader.ReadToEnd();
            }

        }
    }
}

 

Get请求：

 

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {


            string ss = HttpGet("http://localhost:8097/api/Contact/wxs?name=zhangsan");

            Console.WriteLine(ss);



            Console.ReadLine();
        }


        public static string HttpGet(string url)
        {
            Encoding encoding = Encoding.UTF8;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "GET";
            request.Accept = "text/html, application/xhtml+xml, */*";
            request.ContentType = "application/json";

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
            {
                return reader.ReadToEnd();
            }
        }


    }
}