[英]java splitting a string by line \n not working
So I have a string which is from a text file, essentially the text file is just 5 lines which read: 所以我有一个来自文本文件的字符串,从本质上讲,文本文件只有5行,内容为:
x=1
y=15
z=128
topx=100
leftx=150
label= this is a test
I am able to get the split to work once which separates via the '=' sign, but when I try to split the string again by \\n nothing works, I have tried using "\\r?\\n", line.Separator etc. but the string value always stays the same, basically the 5 lines without the characters before the = sign. 我能够使拆分工作一次,该拆分通过'='符号分隔,但是当我尝试再次通过\\ n拆分字符串时,没有任何效果,我尝试使用“ \\ r?\\ n”,line.Separator等。,但字符串值始终保持不变,基本上是5行,其中=号前没有字符。 How would I pull out the individual lines to assign variables to?
我如何拔出单独的行来分配变量?
Here is the code I have, basically the println is to try and see if I can get the first value '1' to list separate from the rest of the lines. 这是我的代码,基本上println是尝试查看是否可以获取第一个值“ 1”以与其余各行分开列出。
public static void main(String[] a) {
15 draw d = new draw();
16 Read r = new Read();
17 String m = r.doRead("variables.txt");
18
19 String[] ss = new String[5];
20 ss = m.split("\n");
21
22 String[] kv= new String[5];
23 for (int i=0; i<ss.length; i++) {
24 kv = ss[i].split("=");
25 String eol = System.getProperty("line.seperator");
26 String test = kv[1];
27 String[] split = new String[5];
28 split = test.split("\n");
29
30
31
32
33 String first = split[0];
34 //String second = split[1];
35 //String third = split[2];
36 //String fourth = split[3];
37 //String fifth = split[4];
38 System.out.println(first);
39 }
When every line looks like 当每一行看起来像
x=1 y=15 z=128 topx=100 leftx=150 label= this is a test
you should first split at a whitespace to get 5 parts ( x=1
, y=15
, ...) and then at =
to get the "key" and "value" part of each part. 您应该首先在空白处拆分以获取5个部分(
x=1
, y=15
,...),然后在=
处拆分以获取每个部分的“键”和“值”部分。
check this out: 看一下这个:
String s = "x=1\ny=15\nz=128\ntopx=100\nleftx=150\nlabel= this is a test";
String[] ss = s.split("\n");
System.err.println( Arrays.asList(ss[0].split("=")) );
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