java 用“|”分割Java字符串
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Java String Split by "|"
提问by Vijay
I am trying to parse some data using Java which is separated by '|' sequence. Below is an example of the data.
我正在尝试使用以“|”分隔的 Java 解析一些数据 顺序。下面是一个数据示例。
String s = "111206|00:00:00|2|64104|58041";
String [] temp = s.split("|");
for(String p: temp)
System.out.println(p);
But instead of splitting at '|' it separates every character separately. Here is the output I get for the above code.
但不是在“|”处拆分 它将每个字符分开。这是我为上述代码得到的输出。
1
1
1
2
0
6
|
0
0
:
0
0
:
0
0
|
2
|
6
4
1
0
4
|
5
8
0
4
1
I found a turn around by replacing the '|' by ',' in the line, but the patch of code is going to run many times and I want to optimize it.
我通过替换“|”找到了转机 通过 ',' 行，但是代码补丁将运行多次，我想对其进行优化。
String s = "111206|00:00:00|2|64104|58041";
s = s.replace('|', ',');
I just want to know what the problem is with '|' ??
我只想知道'|'有什么问题 ??
回答by Doorknob
You must use:
您必须使用：
String [] temp = s.split("\|");
This is because the splitmethod takes a regular expression, and |is one of the special characters. It means 'or'. That means you are splitting by '' or '', which is just ''. Therefore it will split between every character.
这是因为该split方法采用正则表达式，并且|是特殊字符之一。它的意思是“或”。这意味着您正在拆分'' or ''，这就是''。因此它将在每个字符之间拆分。
You need two slashes because the first one is for escaping the actual \in the string, since \is Java's escape character in a string. Java understands the string like "\|", and the regex then understands it like "|".
你需要两条斜线，因为第一个是转义实际\中的字符串，因为\是在一个字符串Java的转义字符。Java 理解字符串像“ \|”，然后正则表达式理解它像“ |”。
