String字符串使用split()方法按特殊符号进行分隔

日常工作中常见的特殊字符，比如：
圆括号( ：split("[(]")

符号：split("\")

斜杆()：split("\\")

按位或符号(|)：split("\|")

.dot：split("\.")

如果在一个字符串中有多个分隔符,可以用“|”作为连字符，比如"name=Bobandage=19andaddress=Beijing"，把key和value都分隔出来，可以用split("=|and")

还有的复杂字符串，如果按常规操作，比如按逗号分隔，使用str.split(",")进行分隔，分隔出来的结果不是我们相像的一样，更不是我们想要的结果，比如下面的字符串：

String str = "{"symbol":"KZ","bc2":0,"bc1":0,"bc4":0,"current":null,"bc3":0,"bc5":0,"sc1":0,"bp1":0,"sc3":0,"sc2":0,"bp3":0,"sc5":0,"bp2":0,"sc4":0,"sellpct":0,"bp5":0,"bp4":0,"diff":0,"sp2":0,"sp1":0,"sp4":0,"sp3":0,"sp5":0,"time":1492128000000,"buypct":0,"ratio":0},{"data":{"market":{"status_id":2,"time_zone_desc":null,"region":"US","time_zone":"America/New_York","status":"盘前交易"},"quote":{"current_ext":null,"symbol":"KZ","high52w":null,"percent_ext":null,"delayed":0,"type":0,"tick_size":0.01,"float_shares":null,"high":null,"float_market_capital":null,"timestamp_ext":1611219316579,"lot_size":1,"lock_set":1,"chg":null,"eps":0.8583956470504864,"last_close":7.495,"profit_four":4.043329E7,"volume":null,"volume_ratio":null,"profit_forecast":4.5778666666666664E7,"turnover_rate":null,"low52w":null,"name":"空中网","exchange":"","pe_forecast":null,"total_shares":47103326,"status":0,"code":"KZ","goodwill_in_net_assets":26.62193188386609,"avg_price":null,"percent":null,"psr":null,"amplitude":null,"current":7.495,"current_year_percent":null,"issue_date":1089302400000,"sub_type":"1536","low":null,"market_capital":3.5303942837E8,"shareholder_funds":3.09677E8,"dividend":null,"dividend_yield":null,"currency":"USD","chg_ext":null,"navps":6.5744,"profit":-1.622671E7,"beta":null,"timestamp":1611153000000,"pe_lyr":-18.74,"amount":null,"pledge_ratio":null,"short_ratio":null,"inst_hld":null,"pb":1.1400246978949033,"pe_ttm":9.253,"contract_size":null,"variable_tick_size":null,"time":1611153000000,"open":null},"others":{"pankou_ratio":0,"cyb_switch":true},"tags":[]},"error_description":"","error_code":0}";

如果使用str.split(",")按逗号进行分隔，分隔出来的结果大相径庭，不是我们想要的，这个时候就需要放大招了：
使用split("[,]")来分割：
Console.log(str.split("[,]"));
这才是正确分隔出来的结果：

结果：
[{"symbol":"KZ", "bc2":0, "bc1":0, "bc4":0, "current":null, "bc3":0, "bc5":0, "sc1":0, "bp1":0, "sc3":0, "sc2":0, "bp3":0, "sc5":0, "bp2":0, "sc4":0, "sellpct":0, "bp5":0, "bp4":0, "diff":0, "sp2":0, "sp1":0, "sp4":0, "sp3":0, "sp5":0, "time":1492128000000, "buypct":0, "ratio":0}, {"data":{"market":{"status_id":2, "time_zone_desc":null, "region":"US", "time_zone":"America/New_York", "status":"盘前交易"}, "quote":{"current_ext":null, "symbol":"KZ", "high52w":null, "percent_ext":null, "delayed":0, "type":0, "tick_size":0.01, "float_shares":null, "high":null, "float_market_capital":null, "timestamp_ext":1611219316579, "lot_size":1, "lock_set":1, "chg":null, "eps":0.8583956470504864, "last_close":7.495, "profit_four":4.043329E7, "volume":null, "volume_ratio":null, "profit_forecast":4.5778666666666664E7, "turnover_rate":null, "low52w":null, "name":"空中网", "exchange":"", "pe_forecast":null, "total_shares":47103326, "status":0, "code":"KZ", "goodwill_in_net_assets":26.62193188386609, "avg_price":null, "percent":null, "psr":null, "amplitude":null, "current":7.495, "current_year_percent":null, "issue_date":1089302400000, "sub_type":"1536", "low":null, "market_capital":3.5303942837E8, "shareholder_funds":3.09677E8, "dividend":null, "dividend_yield":null, "currency":"USD", "chg_ext":null, "navps":6.5744, "profit":-1.622671E7, "beta":null, "timestamp":1611153000000, "pe_lyr":-18.74, "amount":null, "pledge_ratio":null, "short_ratio":null, "inst_hld":null, "pb":1.1400246978949033, "pe_ttm":9.253, "contract_size":null, "variable_tick_size":null, "time":1611153000000, "open":null}, "others":{"pankou_ratio":0, "cyb_switch":true}, "tags":[]}, "error_description":"", "error_code":0}]

多个连续分隔符(多个连续字符分割)：

access_weight = line_list[2].split(',"')[1].split('"')[0].replace(',','')