使用平衡parantheses在java中拆分字符串

Question

我需要拆分以下字符串 （（OPERATING_CARRIER =＆＃39; AB＆＃39;或OPERATING_CARRIER =＆＃39; AB＆＃39; OR（OPERATING_CARRIER =＆＃39; VA＆＃39; AND（FLIGHT_NO = 604或FLIGHT_NO = 603））））） 致：

OPERATING_CARRIER='AB'
OPERATING_CARRIER='AB'
OPERATING_CARRIER='VA'
FLIGHT_NO=604
FLIGHT_NO=603

我尝试过以下代码

String syntax = "(OPERATING_CARRIER='AB' OR OPERATING_CARRIER='AB' OR     (OPERATING_CARRIER='VA' AND (FLIGHT_NO=604 OR FLIGHT_NO=603)))";
List < String > matchList = new ArrayList < String > ();
Pattern regex = Pattern.compile("\\(([^)]*)\\)");
Matcher regexMatcher = regex.matcher(syntax);
while (regexMatcher.find()) 
{
    matchList.add(regexMatcher.group(1));
    System.out.println(regexMatcher.group(1));
}

我得到的是OPERATING_CARRIER =＆＃39; AB＆＃39;或OPERATING_CARRIER =＆＃39; AB＆＃39;或（OPERATING_CARRIER =＆＃39; VA＆＃39; AND（FLIGHT_NO = 604或FLIGHT_NO = 603

Answer 1

试试这个：

String s="((OPERATING_CARRIER='AB' OR OPERATING_CARRIER='AB' OR (OPERATING_CARRIER='VA' AND (FLIGHT_NO=604 OR FLIGHT_NO=603))))";

Matcher m = Pattern.compile("\\w+\\s*=\\s*(?:'[^']+'|\\d+)").matcher(s);

while(m.find()) {
    String aMatch = m.group();
    // add aMatch to match list...
    System.out.println(aMatch);
}

输出

OPERATING_CARRIER='AB'
OPERATING_CARRIER='AB'
OPERATING_CARRIER='VA'
FLIGHT_NO=604
FLIGHT_NO=603

正则表达式

Answer 2

这是一种方式（可能不是更有效）

1. 删除括号
2. 拆分为OR
3. 拆分为AND

这是一个实现

    ArrayList<String> results = new ArrayList<>();
    String input = "((OPERATING_CARRIER='AB' OR OPERATING_CARRIER='AB' OR (OPERATING_CARRIER='VA' AND (FLIGHT_NO=604 OR FLIGHT_NO=603))))";
    String withoutBrakets = input.replaceAll("\\(", "").replaceAll("\\)","");
    String[] withoutOr = withoutBrakets.split("OR");
    for(String sOr : withoutOr) {
        String[] withoutAnd = sOr.split("AND");
        for(String sAnd : withoutAnd) {
            results.add(sAnd);
        }
    }

输出

[OPERATING_CARRIER='AB' ,  OPERATING_CARRIER='AB' ,  OPERATING_CARRIER='VA' ,  FLIGHT_NO=604 ,  FLIGHT_NO=603]

编辑来自@ Stephan答案的Regexp看起来肯定更好

Answer 3

Hi Folks我使用以下代码分割字符串

String input = "name = 'name_1' AND in_stock IN {'in_stock_1','in_stock_2'} AND ( price BETWEEN '01-jan-2015' and '31-may-2015' OR price = 'price_3' )"; 
String sa =input;
String[] arr = sa.replaceAll("[()]+","").split("\\s*(\\sOR|\\sAND)\\s*");

for(int i=0;i<arr.length;i++) {
   System.out.println(arr[i]);
} 

感谢所有输入和帮助