从微信查询订单状况

从微信查询订单状况一般步骤

1建立订单查询对象

2设置公共账号id，商户号等信息

3把订单转换成xml

// 转换成xml
   XStream xs = XStreamFactory.init(false);
   xs.ignoreUnknownElements();
   xs.autodetectAnnotations(true);
   xs.alias("xml", PayMessage.class);
   String sendXml = xs.toXML(order);

4发送xml到微信请求

String backxml = HttpKit.post(WECHATPAY_QUERY_URL, sendXml); //是上一篇的类中的函数

5 把返回值转换成对象保存到本地db
   if (StringUtils.isNotBlank(backxml)) {
    back = (PayMessage) xs.fromXML(backxml);
    // 保存返回的日志
    backlog = new WeChatPayLog();
    backlog.setChlCd(Constant.SYSTEM_WECHAT_PAY);
    backlog.setLogType(Constant.WECHATPAY_QUERY_ORDER_RESULT);
    backlog.setRegiId(Constant.SYSTEM_DIST);
    backlog.setXmlVal(backxml);
    backlog.setRemark("query order  back xml");
    backlog.setOurTradNo(out_trade_no);
    saveWeChatPayLog(backlog);
   }