/**
* 4.0接口商户响应平台分账退费结果通知(商户到平台，直连网银)检查数据字段合法性并生成签名明文串
* @param unknown_type $map
* @return 签名明文串,使用&符号组织签名明文串，如：mer_id=9996&amount=100
*/
public static function getSplitMerRefundNotifyResDataPlain($map)
{
$data = new HashMap();
$mer_id = StringUtil::trim($map->get("mer_id"));
if ("" == $mer_id || strlen($mer_id) > 8) {
die("mer_id为空或者长度超过限制");
}
$order_id = StringUtil::trim($map->get("order_id"));
if ("" == $order_id || strlen($order_id) > 32) {
die("order_id为空或者长度超过限制");
}
$refund_no = StringUtil::trim($map->get("refund_no"));
if ("" == $refund_no || strlen($refund_no) > 16) {
die("refund_no为空或者长度超过限制");
}
$mer_date = StringUtil::trim($map->get("mer_date"));
if (!DateUtil::checkData($mer_date)) {
die("mer_date为空或者长度不符合要求");
}
$ret_code = StringUtil::trim($map->get("ret_code"));
if ("" == $ret_code || strlen($ret_code) != 4) {
die("ret_code为空或者长度不符合要求");
}
$sign_type = StringUtil::trim($map->get("sign_type"));
if ("" == $sign_type || strlen($sign_type) > 8) {
die("sign_type为空或者长度不符合要求");
}
$version = StringUtil::trim($map->get("version"));
if ("" == $version || strlen($version) != 3) {
die("version为空或者长度不符合要求");
}
if (!is_null($map->get("ret_msg"))) {
$ret_msg = StringUtil::trim($map->get("ret_msg"));
if (strlen($ret_msg) > 128) {
die("ret_msg长度不符合要求");
}
$data->put("ret_msg", $ret_msg);
}
$data->put("refund_no", $refund_no);
$data->put("mer_id", $mer_id);
$data->put("order_id", $order_id);
$data->put("mer_date", $mer_date);
$data->put("ret_code", $ret_code);
$data->put("sign_type", $sign_type);
$data->put("version", $version);
return StringUtil::getPlainSortAndByAnd($map);
}