java - 将表达式 String 拆分为 ArrayList

Question

我有一个表达式字符串为

"((firstname = john AND Lastname = Eleven) OR (salary = 15000 AND location = Mexico OR (firstname = mathew AND lastname = Thirteen)))";

是否有任何内置函数我可以将它们拆分为 List<String>具有以下格式:

list[0] = "(";
list[1] = "(";
list[2] = "firstname";
list[3] = "=";
list[4] = "john"
list[5] = "AND";
list[6] = "Lastname"
list[7] = "=";
list[8] = "Eleven";
list[9] = ")"
list[10] = "OR"
list[11] = "(";
list[12] = "salary";
list[13] = "15000"
list[14] = "AND"
etc...

Answer 1

您可以将所有 ( 或 ) 替换为 space $1 space 然后用空格拆分:

String spl[] = 
       str.replaceAll("([\\(\\)=])", " $1 ").replaceAll(" +", " ").trim().split("\\s");

输出

(, (, firstname, =, john, AND, Lastname, =, Eleven, ), OR, (, salary, =, 15000, AND, 
location, =, Mexico, OR, (, firstname, =, mathew, AND, lastname, =, Thirteen, ), ), )