调用支付宝wap支付失败，跳转到支付提示错误界面提示，验签出错，请确认charset参数放在了URL

调用支付宝wap支付失败，跳转到支付提示错误界面提示，验签出错，请确认charset参数放在了URL，但是写入文本的时候，请求都是完整的。 排查调试也没有fenx分析结果 请求时间: 2019-08-28 17:21:37 | 请求信息: http://openapi.alipay.com/gateway.do?charset=utf-8&biz_content={"out_trade_no":"CS2019082817213676180","seller_id":"2088431685974115","total_amount":1,"subject":"lpc","body":"1:2:1","product_code":"QUICK_WAP_PAY","timeout_express":"90m"}&method=alipay.trade.wap.pay&format=JSON&sign=***&return_url=http://xnt.zhikechanglian.com/addons/ewei_shopv2/payment/alipay/return.php&notify_url=http://xnt.zhikechanglian.com/addons/ewei_shopv2/payment/alipay/notify.php&app_id=2019082866504386&sign_type=RSA2&version=1.0&timestamp=2019-08-28 17:21:36 要怎么解决