blocks|key|566102|text|%5E匹配字符串的开头。您需要对其进行转义，但在这种情况下，您需要对其进行转义，以便正则表达式解析器理解这意味着对转义进行转义，因此：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|566103|String+splitChr+=+"\\%5E";
...|code-block|syntax|javascript|566104|应该能让你得到你想要的。|566105|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

The ^ matches the start of string. You need to escape it, but in this case you need to escape it so that the regular expression parser understands which means escaping the escape, so:

<pre><code>String splitChr = "\\^";
...
</code></pre>

should get you what you want.

blocks|key|566148|text|%5E是Java+regex中的一个特殊字符-它的意思是“匹配输入的开头”。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|566149|你需要用"\\%5E"来避开它。需要使用双斜杠对\进行转义，否则Java编译器会认为您试图在字符串中使用特殊的\%5E序列，类似于换行符的\n。|566150|不过，\%5E不是一个特殊的转义序列，因此会出现编译器错误。|566151|简而言之，使用"\\%5E"。|566152|entityMap^0|0|1|0|4|5|M|1|1H|2|1T|2|0|3|2|0|7|5|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|M|$]]

The <code>^</code> is a special character in Java regex - it means "match the beginning" of an input.

You will need to escape it with <code>"\\^"</code>. The double slash is needed to escape the <code>\</code>, otherwise Java's compiler will think you're attempting to use a special <code>\^</code> sequence in a string, similar to <code>\n</code> for newlines.

<code>\^</code> is not a special escape sequence though, so you will get compiler errors.

In short, use <code>"\\^"</code>.

blocks|key|566188|text|String.split()接受正则表达式。%5E符号是一个特殊符号，表示输入序列的开始。你需要逃离它才能让它工作。您尝试使用\对其进行转义是正确的，但它是用于转义Java字符串中的内容的特殊字符，因此您需要使用另一个\对转义字符进行转义。它将为您提供：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|566189|\\%5E|code-block|syntax|javascript|566190|entityMap^0|0|E|M|1|1P|1|2Z|1|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|L|$]]

<code>String.split()</code> accepts a regex. The <code>^</code> sign is a special symbol denoting the beginning of the input sequence. You need to escape it to make it work. You were right trying to escape it with <code>\</code> but it's a special character to escape things in Java strings so you need to escape the escape character with another <code>\</code>. It will give you:

<pre><code>\\^
</code></pre>

blocks|key|566222|text|使用"\\%5E"。请使用以下示例作为指导：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|566223|++++String+aryToSplit+=+"word1%5Eword2";
++++String+splitChr+=+"\\%5E";
++++String[]+fmgStrng+=+aryToSplit.split(splitChr);+
++++System.out.println(fmgStrng[0]%2B","%2BfmgStrng[1]);|code-block|syntax|javascript|566224|它应该打印"word1，word2"，使用"\\%5E"有效地拆分字符串。第一个斜杠用于转义第二个斜杠。如果没有双斜杠，Java会认为%5E是一个转义字符，就像换行符"\n"一样|566225|entityMap^0|2|5|0|0|L|5|27|4|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

use <code>"\\^"</code>. Use this example as a guide:

<pre><code> String aryToSplit = "word1^word2";
 String splitChr = "\\^";
 String[] fmgStrng = aryToSplit.split(splitChr); 
 System.out.println(fmgStrng[0]+","+fmgStrng[1]);
</code></pre>

It should print "word1,word2", effectively splitting the string using <code>"\\^"</code>. The first slash is used to escape the second slash. If there were no double slash, Java would think ^ was an escape character, like the newline <code>"\n"</code>

In Java, I am trying to split on the <code>^</code> character, but it is failing to recognize it. Escaping <code>\^</code> throws code error.

Is this a special character or do I need to do something else to get it to recognize it?

<pre><code>String splitChr = "^";
String[] fmgStrng = aryToSplit.split(splitChr); 
</code></pre>

Java split on ^ (caret?) not working, is this a special character?

编译器

Java

在Java语言中，我尝试对^字符进行拆分，但它无法识别它。转义\^会抛出代码错误。这是一个特殊的字符，还是我需要做一些其他的事情才能让它识别它？String splitChr = "^";String[] fmgStrng = aryToSplit.split(splitChr); 

问Java split on ^(插入符号？)不工作，这是一个特殊的字符吗？
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问Java split on ^(插入符号？)不工作，这是一个特殊的字符吗？
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