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try
{
//url = http://api-mop.chinaums.com/v1/netpay/webpay/pay
WebClient webClient = new WebClient();
byte[] responseData = webClient.DownloadData(url);
}
catch (Exception ex)
{
result.ResultMessage = "获取接口数据异常";
}
//如何取异常后的返回结果??