这是我的想xml文件<xml><appid>wx73450b4be0c88c11</appid><mch_id>1603091522</mch_id><nonce_str>2182457693</nonce_str><out_order_no >P20201028000093</out_order_no ><receivers>[{\"type\":\"MERCHANT_ID\",\"account\":\"1603662608\",\"amount\":\"20\",\"description\":\"分到商户\"},{\"type\":\"MERCHANT_ID\",\"account\":\"1603662608\",\"amount\":\"20\",\"description\":\"分到商户\"},{\"type\":\"MERCHANT_ID\",\"account\":\"1603662608\",\"amount\":\"20\",\"description\":\"分到商户\"}]</receivers><sign>E814E55622499F3DA1FE3B9F7738EA45D4351F46276435C7569D0C7CCF0CA6FC</sign><sign_type>HMAC-SHA256</sign_type><sub_mch_id >1603510142</sub_mch_id ><transaction_id>4200000825202010283605080626</transaction_id></xml>