iPhase2

Results 2 issues of iPhase2

I followed the instructions in the [documentation ](https://plantuml.com/zh/text-encoding) **Simple HEX format** ![image](https://github.com/plantuml/plantuml/assets/51782090/4b4452b5-4abf-4040-b159-619da05441ae) I've noticed that using this method, most of the PlantUML diagrams can be correctly converted into images, and...

triage

`AmountUtil` 这样计算计算金额,精度无法保证,会出现精度丢失 ![image](https://github.com/jeequan/jeepay/assets/51782090/0cafc33e-0245-4bd8-ba8a-c24104b0de73)