thing.DATA我后端POST请求发送订阅消息的参数为 {"touser":"##############","data":{"character_string5":{"value":"##############"},"time3":{"value":"2023-07-16 19:27"},"thing8":{"value":"lab41388888888"},"thing1":{"value":"90# 清洁汽油"},"amount9":{"value":100.00}},"template_id":"##################","miniprogram_state":"trial","lang":"zh_CN"} 但是为什么最后清洁汽油四个字全部显示问号呀