/// <summary>
/// 解析微信小程序encryptedData里的用户信息
/// </summary>
/// <param name="aesIv">向量</param>
/// <param name="encryptedData">encryptedData</param>
/// <param name="code">加密数据</param>
/// <returns></returns>
private WechatDetails <Watermark> DeserializeWechatMiniInfo(string session_key, string aesIv, string encryptedData)
{
WechatDetails <Watermark> wecharInfo = null;
try
{
//判断是否是16位 如果不够补0
//text = tests(text);
//16进制数据转换成byte
byte[] encryptedDatas = Convert.FromBase64String(encryptedData); // strToToHexByte(text);
RijndaelManaged rijndaelCipher = new RijndaelManaged();
rijndaelCipher.Key = Convert.FromBase64String(session_key); // Encoding.UTF8.GetBytes(AesKey);
rijndaelCipher.IV = Convert.FromBase64String(aesIv); // Encoding.UTF8.GetBytes(AesIV);
rijndaelCipher.Mode = CipherMode.CBC;
rijndaelCipher.Padding = PaddingMode.PKCS7;
ICryptoTransform transform = rijndaelCipher.CreateDecryptor();
byte[] plainText = transform.TransformFinalBlock(encryptedDatas, 0, encryptedDatas.Length);
string results = Encoding.Default.GetString(plainText);
Console.WriteLine("微信小程序：DeserializeWechatMiniInfo：" + results);
//序列化获取手机号码
wecharInfo = JsonConvert.DeserializeObject <WechatDetails <Watermark> >(results);
}
catch (Exception ex)
{
wecharInfo.Message = ex.Message;
}
return(wecharInfo);
}
/// <summary>
/// 获取微信小程序用户信息
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public async Task <IResultModel <WechatDetails <Watermark> > > GetUserInfo(WechatMiniAuthParam param)
{
ResultModel <WechatDetails <Watermark> > resultModel = new ResultModel <WechatDetails <Watermark> >();
var url = $"{Code2SessionUrl}?appid={param.AppId}&secret={param.AppSecret}&js_code={param.Code}&grant_type=authorization_code";
var httpClient = new HttpClient();
var content = await httpClient.GetStringAsync(url);
if (string.IsNullOrWhiteSpace(content))
{
return(resultModel.Failed("参数有误"));
}
var result = JsonConvert.DeserializeObject <Code2SessionGetResult>(content);
if (result.ErrCode != 0)
{
return(resultModel.Failed(result.ErrMessage));
}
WechatDetails <Watermark> wechardetails = DeserializeWechatMiniInfo(result.SessionKey, param.Iv, param.EncryptedData);
wechardetails.watermark.openid = result.OpenId;
return(resultModel.Success(wechardetails));
}
