HTTPClick调用WebApi帮助类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;namespace 对应的命名空间
{
public class ApiHelper
{
/// <summary>
/// api调用方法
/// </summary>
/// <param name="controllerName">控制器名称</param>
/// <param name="overb">请求方式</param>
/// <param name="action">方法名称</param>
/// <param name="obj">方法参数</param>
/// <returns>json字符串</returns>
public static string GetApiMethod(string controllerName, string overb, string action, object obj = null)
{
Task<HttpResponseMessage> task = null;
string json = "";
//创建一个Http客户端对象
HttpClient client = new HttpClient();
//指定访问WebApi的uri地址
client.BaseAddress = new Uri("http://localhost:47369/api/" + controllerName + "/");
/*根据不同的动作执行不同的方法*/
switch (overb)
{
case "get":
task = client.GetAsync(action);
break;
case "post":
task = client.PostAsJsonAsync(action, obj);
break;
case "delete":
task = client.DeleteAsync(action);
break;
case "put":
task = client.PutAsJsonAsync(action, obj);
break;
default:
break;
}
//等待请求的过程
task.Wait();
//接收响应的结果
var response = task.Result;
//判断响应的状态码是成功时候
if (response.IsSuccessStatusCode)
{
//从响应对象的内容中读取字符串
var read = response.Content.ReadAsStringAsync();
//等待读取的过程
read.Wait();
//接收读取的结果-json
json = read.Result;
}
return json;
}
}
}