alipaytradeapppayrequest request = new alipaytradeapppayrequest();
jsonobject bizcontent = new jsonobject();
bizcontent.put("out_trade_no","2022091522222221");
bizcontent.put("total_amount",0.01);
bizcontent.put("subject","测试商品");
bizcontent.put("product_code","quick_msecurity_pay");