// Json 格式化处理
private static async Task <T> JsonFormat <T>(WechatPayConfig config, HttpResponseMessage resp, bool needCheckSign)
where T : WechatBaseResp, new()
{
if (!resp.IsSuccessStatusCode)
{
var content = await resp.Content.ReadAsStringAsync();
return(string.IsNullOrEmpty(content)
? new T().WithResp(SysRespCodes.NetError, $"微信支付接口请求异常({resp.ReasonPhrase})")
: JsonSerializer.Deserialize <T>(content));
}
var respDetail = await GetResponseDetail(resp);
if (needCheckSign)
{
var verifyRes = await WechatCertificateHelper.Verify(config, respDetail.signature, respDetail.serial_no,
respDetail.nonce, respDetail.timestamp, respDetail.body);
if (!verifyRes.IsSuccess())
{
verifyRes.request_id = respDetail.request_id;
return(verifyRes.ToResp <T>());
}
}
return(string.IsNullOrEmpty(respDetail.body)
? new T()
: JsonSerializer.Deserialize <T>(respDetail.body));
}
/// <summary>
/// 设置当前请求对应的支付配置信息
/// 仅当前请求下有效，如果配置全局信息，请设置 WechatPayConfigProvider.config
/// </summary>
/// <param name="req"></param>
/// <param name="payConfig"></param>
/// <returns></returns>
public static TReq SetContextConfig <TReq>(this TReq req, WechatPayConfig payConfig)
where TReq : WechatBaseReq
{
req.pay_config = payConfig;
return(req);
}
private static async Task <SendEncryptBodyResp> GetReqContent_JsonEncryptSegment(WechatPayConfig payConfig,
Dictionary <string, string> dics)
{
var certRes = await WechatCertificateHelper.GetLatestCertsByConfig(payConfig);
if (!certRes.IsSuccess())
{
return(certRes.ToResp <SendEncryptBodyResp>());
}
var cert = certRes.item;
return(new SendEncryptBodyResp()
{
body = dics.ToDictionary(
d => d.Key,
d => WechatCertificateHelper.OAEPEncrypt(cert.cert_public_key, d.Value)
)
});
}
/// <summary>
/// 根据微信商户配置，验证结果签名
/// </summary>
/// <param name="payConfig">支付配置</param>
/// <param name="signature">微信返回头信息中的签名</param>
/// <param name="serialNo">微信返回头信息中的平台证书编号</param>
/// <param name="nonce">微信返回头信息中的随机串</param>
/// <param name="timestamp">微信返回头信息中的时间戳</param>
/// <param name="respBody">微信返回的内容字符串</param>
/// <returns></returns>
public static Task <WechatBaseResp> Verify(WechatPayConfig payConfig, string signature,
string serialNo, string nonce, long timestamp, string respBody)
{
return(WechatCertificateHelper.Verify(payConfig, signature, serialNo, nonce, timestamp, respBody));
}