/// <summary>
///微信网页授权回调
///如果用户同意授权，页面将跳转至 redirect_uri/?code=CODE&state=STATE。
///若用户禁止授权，则重定向后不会带上code参数，仅会带上state参数redirect_uri?state=STATE
///http://mp.weixin.qq.com/wiki/9/01f711493b5a02f24b04365ac5d8fd95.html
/// </summary>
/// <returns></returns>
public ActionResult OAuthCallback()
{
_log.Write("微信网页授权接口发起回调", HttpContext.Request.Url.ToString(), TraceEventType.Verbose);
string code = HttpContext.Request.QueryString["code"];
string state = HttpContext.Request.QueryString["state"];
//完成网页鉴权后要转回的页面地址
string redirectUrl = null;
if (String.IsNullOrEmpty(state) == false)
{
redirectUrl = Server.UrlDecode(state);
}
else
{
_log.Write("没有指定完成网页鉴权后要转回的页面地址： state", TraceEventType.Warning);
return(new HttpStatusCodeResult(404));
}
string domainId = HttpContext.Request.QueryString["domainId"];
if (String.IsNullOrEmpty(domainId))
{
_log.Write("没有指定 domainId ", TraceEventType.Warning);
return(new HttpStatusCodeResult(404));
}
DomainContext domainContext = _domainPool.GetDomainContext(Guid.Parse(domainId));
if (domainContext == null)
{
_log.Write("指定的 domainId 不存在", TraceEventType.Warning);
return(new HttpStatusCodeResult(404));
}
if (String.IsNullOrEmpty(code))
{
//重定向到错误页面
return(new RedirectResult(String.Format(
"~/Home/ErrorView/{0}?message={1}", domainContext.Domain.Id, "td1")));
}
//domainContext.AppSecret
RequestApiResult <WeixinWebAccessTokenResult> getWebAccessToken =
TokenApi.GetWebAccessToken(domainContext.AppId, "domainContext.AppSecret", code);
if (getWebAccessToken.Success == false)
{
_log.Write("请求网页AccessToken失败。", getWebAccessToken.Message, TraceEventType.Warning);
//重定向到错误页面
return(new RedirectResult(String.Format(
"~/Home/ErrorView/{0}?message={1}", domainContext.Domain.Id, "td2")));
}
//此处拿到OpenId了，接下来判断该用户是否是已关注用户
RequestApiResult <WeixinUser> getUserInfoResult =
UserApiWrapper.GetUserInfo(domainContext, getWebAccessToken.ApiResult.OpenId);
if (getUserInfoResult.Success == false)
{
//重定向到错误页面
return(new RedirectResult(String.Format(
"~/Home/ErrorView/{0}?message={1}", domainContext.Domain.Id, "td3")));
}
//值为0时，代表此用户没有关注该公众号，拉取不到其余信息。
//跳转到引导关注页面
if (getUserInfoResult.ApiResult.Subscribe == 0)
{
//用户取消关注有消息推送
//在那时设置member中是否在关注为false
//重定向到提示关注页面
return(new RedirectResult("~/Home/GuideSubscribe/" + domainContext.Domain.Id));
}
//根据OpenId获取用户信息
MemberEntity member = _memberManager.GetMemberByOpenId(domainContext.Domain.Id, getUserInfoResult.ApiResult.OpenId);
if (member == null)
{
//添加新用户
member = _memberManager.AddMember(domainContext, getUserInfoResult.ApiResult);
}
else
{
//更新当前用户信息
_memberManager.UpdateMember(member, getUserInfoResult.ApiResult);
}
MemberContext memberContext = new MemberContext(member);
SessionContainer.SetMemberContext(HttpContext, memberContext);
//转回初始业务页面
return(new RedirectResult(redirectUrl));
}
