使用postman模拟微信小程序支付回调

<xml><appid><![CDATA[wx6a94d840sssssss]]></appid>
<attach><![CDATA[test]]></attach>
<bank_type><![CDATA[OTHERS]]></bank_type>
<cash_fee><![CDATA[1]]></cash_fee>
<fee_type><![CDATA[CNY]]></fee_type>
<is_subscribe><![CDATA[Y]]></is_subscribe>
<mch_id><![CDATA[1602876300]]></mch_id>
<nonce_str><![CDATA[5dh7wiradptg55udp7w9rmlrur8madrv]]></nonce_str>
<openid><![CDATA[oo44a5uldojwVmL27KS4R0APR_gw]]></openid>
<out_trade_no><![CDATA[sdkphp20210305164812]]></out_trade_no>
<result_code><![CDATA[SUCCESS]]></result_code>
<return_code><![CDATA[SUCCESS]]></return_code>
<sign><![CDATA[BD851430C2493F16A49B70A5B5D26DE4F2906B1CB3B5B969193DB9671DAE4AAF]]></sign>
<time_end><![CDATA[20210305164816]]></time_end>
<total_fee>1</total_fee>
<trade_type><![CDATA[JSAPI]]></trade_type>
<transaction_id><![CDATA[4200000892202103057215065043]]></transaction_id>
</xml>