Question

我有这个字符串

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";

如果我像这样String vec2 [] = x.split(",");进行拆分，那么输出就是这个

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

等等。

如果我像这样String vec2[] = x.split("|");进行拆分，则输出为：

等等。

我希望有类似的东西：

    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

知道什么是错的吗？

Answer 1

您需要转义|：

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

那是因为split()的参数是正则表达式而不是字符串。

Answer 2

split的参数是正则表达式和“|”人物有特殊的意义。尝试转义它\\|。

Answer 3

String.split(String)拆分正则表达式，而不是字符。正如您在summary of Java regular expression constructs中看到的那样，|可以作为or构造。

如果要拆分|字符，可能需要使用\|转义它。请注意，要在Java String中对其进行转义，您还需要转义反斜杠：\\|。

Answer 4

问题是split(String regex)将正则表达式作为参数。管道（|）是正则表达式中的特殊字符，因此必须进行转义：

        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);
        }

收率：

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

Answer 5

试试这个

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

Answer 6

您需要转义|字符，因为它是正则表达式或模式。

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);
}

Answer 7

你是否试图逃避角色

x.split("\\|");

Java字符串拆分给出意外结果

7 个答案: