1.非自研系统

通过接口，获取第三方系统token，存redis缓存，设计跳转配置，根据获取的配置路由等用户信息来访问第三方系统免登录。（登入校验在第三方系统实现）

/// <summary>
/// 获取OA登录Token
/// </summary>
/// <returns></returns>
public async Task<string> PostOaAcessTokenAsync(string loginid)
{
	string resToken = "";

	var formData = new Dictionary<string, string>
	{
		{ "appid", "*************************" },
		{ "loginid", loginid }
	};

	var content = new FormUrlEncodedContent(formData);

	// 发送POST请求
	HttpResponseMessage response = await HttpHelper.Client.PostAsync("http://127.0.0.1:8888/ssologin/getToken", content);

	// 处理响应
	if (response.IsSuccessStatusCode)
	{
		// 对成功的响应进行操作
		var responseContent = await response.Content.ReadAsStringAsync();
		resToken = responseContent;

		if (resToken.Contains("has no account:"))
		{
			throw new UserFriendlyException(UserConst.OA_User_No_Exist);
		}

		return resToken;// 域登陆成功
	}
	else
	{
		// 处理错误
		throw new UserFriendlyException(UserConst.Login_Error);
	}

}

1.自研系统（OOS机制-单点登录）

通过调整自研系统登入接口参数，添加token字段，由门户创建token，这边按照token值来判断是否不走正常账号密码登入，直接通过token值调用门户接口校验，如果校验成功则质检进入自研系统。

public async Task SSOLoginValidationAsync(string token, Action<UserEntity> userAction = null)
{
    var user = new UserEntity();
    // 发送POST请求
    HttpResponseMessage response = await HttpHelper.Client.PostAsync("http://127.0.0.1/prod-api/auth/get-token/" + token, null);
    // 处理响应
    if (response.IsSuccessStatusCode)
    {
        // 对成功的响应进行操作
        var responseContent = await response.Content.ReadAsStringAsync();
        var jObject = JObject.Parse(responseContent);
        var bo = jObject["succeeded"].Value<bool>();
        if (bo)
        {
            string UserCode = jObject["data"].Value<string>();// 工号
            if (await ExistAsync(UserCode, o => user = o))
            {
                if (userAction is not null)
                {
                    userAction.Invoke(user);
                    return;// 域登陆成功
                }
            }
            throw new UserFriendlyException(UserConst.Login_User_No_Exist);
        }
        else
        {
            // 处理域登陆失败
            throw new UserFriendlyException(UserConst.Auth_User_Token_Invalid);
        }
    }
    else
    {
        // 处理错误
        throw new UserFriendlyException(UserConst.SSO_Token_Err);
    }
}