最快的方式是直接nuget安装AspNetCore.Authentication.WeChat包。
想要知道是如何实现的,可以看下面github上面的源码。
源码在这里:https://github.com/china-live/QQConnect
使用方式:
- 安装nuget的包以后,在startup.cs中添加微信授权认证并配置appId和AppSecret,使用缓存保存State数据(微信State Too Long 报错 由于微信的设置,state最多128字节,但是默认生成的state会超出限制,所以需要加入缓存)
iservices.AddAuthentication().AddWeChat(options =>
{
options.AppId = Configuration["WeixinSetting:WeixinAppId"];
options.AppSecret = Configuration["WeixinSetting:WeixinAppSecret"];
options.UseCachedStateDataFormat = true;
}); - 新建一个Controller,编写action
/// <summary>
/// 微信授权登录
/// </summary>
/// <param name="returnUrl">用户尝试进入的需要登录的页面</param>
/// <returns></returns>
[AllowAnonymous]
public ActionResult WxLogin(string returnUrl)
{ string redirectUrl = Url.Action("BaseCallback",
new { ReturnUrl = returnUrl }); var properties = signInManager
.ConfigureExternalAuthenticationProperties("WeChat", redirectUrl);
return new ChallengeResult("WeChat", properties);
} /// <summary>
/// 回调
/// </summary>
/// <param name="provider"></param>
/// <param name="returnUrl">用户最初尝试进入的页面</param>
/// <returns></returns>
[AllowAnonymous]
public async Task<IActionResult> BaseCallback(string provider = null, string returnUrl = "/")
{
try
{
ExternalLoginInfo info = await signInManager.GetExternalLoginInfoAsync();
if (info == null)
{
return RedirectToAction(nameof(Login));
}
var result = await signInManager.ExternalLoginSignInAsync(
info.LoginProvider, info.ProviderKey, false);
if (result.Succeeded)
{
return Redirect(returnUrl);
}
else
{
Account user = new Account
{
OpenId = info.Principal.FindFirst(ClaimTypes.NameIdentifier).Value,
UserName =
info.Principal.FindFirst(ClaimTypes.NameIdentifier).Value
};
IdentityResult identResult = await userManager.CreateAsync(user);
if (identResult.Succeeded)
{
identResult = await userManager.AddLoginAsync(user, info);
if (identResult.Succeeded)
{
await signInManager.SignInAsync(user, false);
return Redirect(returnUrl);
}
}
return AccessDenied();
}
}
catch (Exception ex)
{
return Content("发生错误:" + ex);
}
}