public async Task <string> Valid([FromQuery] WeChatValidDto validDto)
{
using (var reader = new StreamReader(Request.Body))
{
var body = await reader.ReadToEndAsync();
return(await _weChatConfigServices.Valid(validDto, body));
}
}
public async Task <string> Valid(WeChatValidDto validDto, string body)
{
WeChatXMLDto weChatData = null;
string objReturn = null;
try
{
_logger.LogInformation("会话开始");
if (string.IsNullOrEmpty(validDto.publicAccount))
{
throw new Exception("没有微信公众号唯一标识id数据");
}
var config = await QueryById(validDto.publicAccount);
if (config == null)
{
throw new Exception($"公众号不存在=>{validDto.publicAccount}");
}
_logger.LogInformation(JsonHelper.GetJSON <WeChatValidDto>(validDto));
var token = config.interactiveToken;//验证用的token 和access_token不一样
string[] arrTmp = { token, validDto.timestamp, validDto.nonce };
Array.Sort(arrTmp);
string combineString = string.Join("", arrTmp);
string encryption = MD5Helper.Sha1(combineString).ToLower();
_logger.LogInformation(
$"来自公众号:{validDto.publicAccount}\r\n" +
$"微信signature:{validDto.signature}\r\n" +
$"微信timestamp:{validDto.timestamp}\r\n" +
$"微信nonce:{validDto.nonce}\r\n" +
$"合并字符串:{combineString}\r\n" +
$"微信服务器signature:{validDto.signature}\r\n" +
$"本地服务器signature:{encryption}"
);
if (encryption == validDto.signature)
{
//判断是首次验证还是交互?
if (string.IsNullOrEmpty(validDto.echoStr))
{
//非首次验证
weChatData = XmlHelper.ParseFormByXml <WeChatXMLDto>(body, "xml");
weChatData.publicAccount = validDto.publicAccount;
objReturn = await HandleWeChat(weChatData);
}
else
{
//首次接口地址验证
objReturn = validDto.echoStr;
}
}
else
{
objReturn = "签名验证失败";
}
}
catch (Exception ex)
{
_logger.LogInformation($"会话出错(信息)=>\r\n{ex.Message}");
_logger.LogInformation($"会话出错(堆栈)=>\r\n{ex.StackTrace}");
//返回错误给用户
objReturn = string.Format(@$ "<xml><ToUserName><![CDATA[{weChatData?.FromUserName}]]></ToUserName>
<FromUserName><![CDATA[{weChatData?.ToUserName}]]></FromUserName>
