支付宝沙箱环境退款问题

[aikangs]

版本信息

• IJPay 版本: 2.3.2
• 开发环境:spring-boot
• 支付方式:支付宝
• 调用的接口:alipay.trade.refund

报错信息 （注意格式化）

ErrorScene^_^40002^_^isv.invalid-signature^_^null^_^Linux^_^2020-01-02 11:15:28^_^ProtocalMustParams:charset=UTF-8&alipay_root_cert_sn=6bc29aa3b4d406c43483ffea81e08d22&method=alipay.trade.refund&sign=TlZLnmzEUUI2VsVmicQzKyOf43irJdJmFdQogG1yXsUfFo/3YgTcVuzFQJ6dVYQjTuKklZTTJeC9xkYobrbRHX0l4WJfJMAjBN/M8I9tK1GR3rgePkHbXT1kVjgc3RmvzevRpTlBLNLZfPlAlBf0zxh6gHx8TD2Llbwywa/kcIfRqLJ1Mvq+gsuvwOEi3pNUGtB6x+6u8HrHc2MLToqtxPmrI0qwA5/ELFh8GFQjtJVxaeVUvWBsaamYfrlgtD5QYpBkt1BTfI4jhhggV0Toe4+eOwymnYHxZhKgYUloQvqog0b/HJqNOk1wCT9uym272pddPRYeBPKoVT7CDYN1sg==&version=1.0&app_id=2016101600701548&sign_type=RSA2&timestamp=2020-01-02 11:15:28^_^ProtocalOptParams:alipay_sdk=alipay-sdk-java-4.8.10.ALL&format=json^_^ApplicationParams:biz_content={"out_request_no":"1000001343333972","out_trade_no":"1000001255630963","refund_amount":"40.00"}^_^Body:{"alipay_trade_refund_response":{"code":"40002","msg":"Invalid Arguments","sub_code":"isv.invalid-signature","sub_msg":"验签出错，建议检查签名字符串或签名私钥与应用公钥是否匹配，网关生成的验签字符串为：alipay_root_cert_sn=6bc29aa3b4d406c43483ffea81e08d22&alipay_sdk=alipay-sdk-java-4.8.10.ALL&app_id=2016101600701548&biz_content={"out_request_no":"1000001343333972","out_trade_no":"1000001255630963","refund_amount":"40.00"}&charset=UTF-8&format=json&method=alipay.trade.refund&sign_type=RSA2&timestamp=2020-01-02 11:15:28&version=1.0"},"sign":"iuwK5e3csEOTrxG5Cy1uGWtBd99uvRKJ5IYMx4rFyQ9DVlBpDIxLNxbikQzd9/iNkUSY+zTtWLJXJ9TkJglgB3Tuemk1U7Nz98HjqvP2OL+XoTBZg2qdRhrvhCu537v0HbyPffAHcmRkfGQeMAjhIGsq8f7MH+LO4HLFsqLMCEUPnnoRe+N2wJYy2GFoTnEmaWS/bEj8y7rSJuirzlFuPUFkk8J5jQnB2ECFbvr2W5D8168fhD+D2wlmzxxlWo8mA+d0ZCZyDXXaX0Vs8r+JL8l3ZBayI7vU+0jKP8Ux5L+qaw9uskOrR3LBy4XEFf2BNt4d4vvtvuvFKgif/Ygf5A=="}^_^10ms,297ms,0ms

问题描述（包括回显步骤、截图 ）

使用支付宝支付成功后，调用退款接口，提示验签出错，建议检查签名字符串或签名私钥与应用公钥是否匹配，网关生成的验签字符串。使用官方提供的支付宝开放平台开发助手做验签时的确时不匹配的。系统生成的验签字符串跟支付宝的不匹配

预期效果描述

交流群

• IJPay 让支付触手可及交流群：723992875
• TNW 微信公众号开发脚手架交流群：114196246

[Javen205]

确定网关以及证书配置没有问题？