Winsoft.GOV/Winsoft.GOV.XF.WebApi.WXCore/Controllers/AuthController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Senparc.Weixin.MP.AdvancedAPIs;
using Senparc.Weixin;
using Microsoft.AspNetCore.Http;
using Senparc.Weixin.Entities;
using Microsoft.Extensions.Options;

// For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860

namespace Winsoft.GOV.XF.WebApi.WXCore.Controllers
{
    [Route("api/[controller]")]
    public class AuthController :  BaseController
    {
        public AuthController(IOptions<SenparcWeixinSetting> senparcWeixinSetting) : base(senparcWeixinSetting)
        {
        }

        [HttpGet]
        public ActionResult Get(string code, string state, string returnUrl)
        {
            if (string.IsNullOrEmpty(code))
            {
                return Content("您拒绝了授权！");
            }

            if (!state.Contains("|"))
            {
                //这里的state其实是会暴露给客户端的，验证能力很弱，这里只是演示一下
                //实际上可以存任何想传递的数据，比如用户ID
                return Content("验证失败！请从正规途径进入！1001");
            }
            try
            {
                //通过，用code换取access_token
                var openIdResult = OAuthApi.GetAccessToken(appId, appSecret, code);
                if (openIdResult.errcode != ReturnCode.请求成功)
                {
                    return Content("错误：" + openIdResult.errmsg);
                }
                HttpContext.Session.SetString("OpenId", openIdResult.openid);//进行登录
                                                                             //也可以使用FormsAuthentication等其他方法记录登录信息，如：
                                                                             //FormsAuthentication.SetAuthCookie(openIdResult.openid,false);

                return Redirect(returnUrl);
            }
            catch (Exception e)
            {
                return Content("错误：" + e.Message);
            }
        }
    }
}