Java字符串分割給人意想不到的結果

我有這個字符串Java字符串分割給人意想不到的結果

String x = "2013-04-17T08:00:00.001,41.14806,-9.58972,-13.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-22.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-31.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-40.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-49.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-58.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-64.0,0.0,0.0,-20.0,4";

如果我做分裂這樣String vec2 [] = x.split(",");輸出將是這個

2013-04-17T08:00:00.001 
41.14806 
-9.58972 
-13.0 
0.0 
0.0 
-20.0

等。

如果我做這樣String vec2[] = x.split("|");輸出分割是這樣的：

等。

而且我希望類似這樣的東西：

2013-04-17T08:00:00.001,41.14806,-9.58972,-13.0,0.0,0.0,-20.0,4 
    2013-04-17T08:00:00.001,41.14806,-9.58972,-22.0,0.0,0.0,-20.0,4 
    and so on

任何想法有什麼不對？

來源

2013-04-17 unpix

http://stackoverflow.com/questions/1433115/what-is-the-proper-way-of-inserting-的可能重複a-pipe-into-a-java-pattern-expression – Ankit

'String ** vec2 []'在Java中是無效標識符！ – NINCOMPOOP

@NoobUnChained我認爲這是因爲他想讓它變成粗體。 – Maroun

你需要躲避|：

String vec2[] = x.split("\\|");

這是因爲參數split()是正則表達式不是一個字符串。

來源

2013-04-17 08:59:24 Maroun

分割參數是一個正則表達式，「|」人物有特殊的含義。嘗試轉義它\\|。

來源

2013-04-17 08:59:55

String.split(String)拆分正則表達式，而不是字符。正如您在summary of Java regular expression constructs中看到的那樣，|的功能如同or結構。

如果要分割|字符，可能需要使用\|將其轉義。請注意，要在Java String中轉義它，您還需要避開反斜槓：\\|。

來源

2013-04-17 09:00:36 mthmulders

問題是，split(String regex)需要正則表達式作爲參數。管道（|）是一個特殊字符在正則表達式，因此必須進行轉義：

 String x = "2013-04-17T08:00:00.001,41.14806,-9.58972,-13.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-22.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-31.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-40.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-49.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-58.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-64.0,0.0,0.0,-20.0,4"; 
     String[] arr = x.split("\\|"); 
     for(String str : arr) 
     { 
      System.out.println(str); 
     }

產量：

2013-04-17T08:00:00.001,41.14806,-9.58972,-13.0,0.0,0.0,-20.0,4 
2013-04-17T08:00:00.001,41.14806,-9.58972,-22.0,0.0,0.0,-20.0,4 
2013-04-17T08:00:00.001,41.14806,-9.58972,-31.0,0.0,0.0,-20.0,4 
2013-04-17T08:00:00.001,41.14806,-9.58972,-40.0,0.0,0.0,-20.0,4 
2013-04-17T08:00:00.001,41.14806,-9.58972,-49.0,0.0,0.0,-20.0,4 
2013-04-17T08:00:00.001,41.14806,-9.58972,-58.0,0.0,0.0,-20.0,4 
2013-04-17T08:00:00.001,41.14806,-9.58972,-64.0,0.0,0.0,-20.0,4

來源

2013-04-17 09:00:50 npinti

試試這個

String vec2[] = x.split("\\|");

來源

2013-04-17 09:00:58

你需要躲避|字符，因爲它是正則表達式或模式。

String x = "2013-04-17T08:00:00.001,41.14806,-9.58972,-13.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-22.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-31.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-40.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-49.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-58.0,0.0,0.0,-20.0,4|2013-04-17T08:00:00.001,41.14806,-9.58972,-64.0,0.0,0.0,-20.0,4"; 
String[] arr = x.split("\\|"); 
for(String s: arr){ 
    System.out.println(s); 
}

來源

2013-04-17 09:01:00

，您是否試圖逃脫字符作爲這樣

x.split("\\|");

來源

2013-04-17 09:01:06 dinukadev

您需要添加一個\因爲\本身也必須轉義。 – npinti

Java字符串分割給人意想不到的結果

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