假設我有一個字符串內容如下Input: FTX+AAA+++201707141009UTC' FTX+BBB+++201707141009UTC' FTX+CCC+++201707141009UTC?:??' PISCO US LTS;?:V.D??' SOUZA?:GB?:GB' FTX+ZZZ+++201707141009UTC'Expected Output: Number of segments: 4Input: FTX+AAA+++201707141009UTC' FTX+CCC+++201707141009UTC?:??' PISCO US LTS;?:V.D??' FTX+ZZZ+++201707141009UTC'Expected Output: Number of segments: 3基本上，當分隔符 ' 帶有問號時，我想將其視為同一行。行分隔符是 '如何標記并獲取 Java 中的段數？？？
3 回答
慕娘9325324
TA貢獻1783條經驗 獲得超4個贊
您可以在正則表達式中使用負回顧：
String input = "FTX+AAA+++201707141009UTC'\n"
+ " FTX+BBB+++201707141009UTC'\n"
+ " FTX+CCC+++201707141009UTC?:??'\n"
+ " PISCO US LTS;?:V.D??' \n"
+ " SOUZA?:GB?:GB'\n"
+ " FTX+ZZZ+++201707141009UTC'";
String[] tokens = input.split("(?<!\\?)'\\s*");
System.out.println(tokens.length);
4
但是，在第二個示例中，我希望有兩個部分，而不是三個...
蠱毒傳說
TA貢獻1895條經驗 獲得超3個贊
我想他/她想要的是：
String a = "FTX+AAA+++201707141009UTC'"
+ "FTX+BBB+++201707141009UTC'"
+ "FTX+CCC+++201707141009UTC?:??'"
+ "PISCO US LTS;?:V.D??' "
+ "SOUZA?:GB?:GB'"
+ "FTX+ZZZ+++201707141009UTC'";
String result[] = a.split("'");
List<String> stringList = new ArrayList<String>(Arrays.asList(result));
for (int i = 0; i < stringList.size(); i++) {
if (!stringList.get(i).startsWith("FTX") && i != 0) {
stringList.set(i-1, stringList.get(i-1) + stringList.get(i));
stringList.remove(i);
i--;
}
}
for (int j = 0; j < stringList.size(); j++) {
System.out.println(stringList.get(j));
}
FTX+AAA+++201707141009UTC
FTX+BBB+++201707141009UTC
FTX+CCC+++201707141009UTC?:??PISCO US LTS;?:VD?? SOUZA?:GB?:GB
FTX+ZZZ+++201707141009UTC
SMILET
TA貢獻1796條經驗 獲得超4個贊
上面的另一種選擇 - 但再次證明您發布的第二個示例可能是錯誤的，因為第三行以 a 結尾?'，根據您的定義不應該是中斷。
public void test() {
test("FTX+AAA+++201707141009UTC'" +
"FTX+BBB+++201707141009UTC'" +
"FTX+CCC+++201707141009UTC?:??'" +
"PISCO US LTS;?:V.D??'" +
"SOUZA?:GB?:GB'" +
"FTX+ZZZ+++201707141009UTC'");
test("FTX+AAA+++201707141009UTC'" +
"FTX+CCC+++201707141009UTC?:??'" +
"PISCO US LTS;?:V.D??'" +
"FTX+ZZZ+++201707141009UTC'");
}
private void test(String s) {
String[] split = s.split("(?<!\\?)'");
System.out.println(split.length+"->"+Arrays.toString(split));
}
印刷
4->[FTX+AAA+++201707141009UTC, FTX+BBB+++201707141009UTC, FTX+CCC+++201707141009UTC?:??'PISCO US LTS;?:VD??'SOUZA?:GB?:GB, FTX+ZZZ+++201707141009UTC]
2->[FTX+AAA+++201707141009UTC, FTX+CCC+++201707141009UTC?:??'PISCO US LTS;?:VD??'FTX+ZZZ+++201707141009UTC]
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