【正则】json字符串里面的正则表达式包含小数点，导致转换对象失败

前言

示例：

{
    
    
    "friendSumUperLimit":"^[0-9]+$",
    "presentRatio":"^[0-9]+(\.[0-9]{0,2})?$",
    "repeatRatio":"^[0-9]+(\.[0-9]{0,2})?$"
}

解决办法：多加一个斜杠

{
    
    
    "friendSumUperLimit":"^[0-9]+$",
    "presentRatio":"^[0-9]+(\\.[0-9]{0,2})?$",
    "repeatRatio":"^[0-9]+(\\.[0-9]{0,2})?$"
}