工具地址:
正则语法:https://tool.oschina.net/uploads/apidocs/jquery/regexp.html
jsonPath语法:https://blog.youkuaiyun.com/m0_38020436/article/details/94575584
XPath语法:https://www.cnblogs.com/lone5wolf/p/10905339.html
测试地址:
正则:https://tool.oschina.net/regex
jsonPath:http://www.atoolbox.net/Tool.php?Id=792
json:https://www.sojson.com/
用到时候再看