如何在java中将反斜杠插入到我的字符串中？
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How to insert backslash into my string in java?
提问by AndroidDev
I have string, and I want to replace one of its character with backslash \
我有字符串，我想用反斜杠 \ 替换它的一个字符
I tried the following, but no luck.
我尝试了以下方法，但没有运气。
engData.replace("'t", "\'t")
and
和
engData = engData.replace("'t", String.copyValueOf(new char[]{'\', 't'}));
INPUT : "can't"
输入：“不能”
EXPECTED OUTPUT : "can\'t"
预期输出：“不能”
Any idea how to do this?
知道如何做到这一点吗？
采纳答案by Amit Gupta
Try like this
像这样尝试
engData.replace("'", "\\'");
INPUT : can't
输入：不能
EXPECTED OUTPUT : can\'t
预期输出：不能
回答by yamafontes
The following works for me:
以下对我有用：
class Foobar {
public static void main(String[] args) {
System.err.println("asd\'t".replaceAll("\'t", "\\'t"));
}
}
回答by Vinith
For String instances you can use, str.replaceAll()will return a new String with the changes requested:
对于您可以使用的 String 实例，str.replaceAll()将返回一个带有请求更改的新字符串：
String str = "./";
String s_modified = s.replaceAll("\./", "");
回答by SudoRahul
Stringis immutable in Java. You need to assign back the modified string to itself.
String在 Java 中是不可变的。您需要将修改后的字符串分配回自身。
engData = engData.replace("'t", "\'t"); // assign the modified string back.
回答by Justin
This is possible with regex:
这可以通过正则表达式实现：
engData = engData.replaceAll("('t)","\\");
The (and )specify a group. The 'twill match any string containing 't. Finally, the second part replaced such a string with a backslash character: \\\\(four because this), and the first group: $1. Thus you are replacing any substring 'twith \'t
在(与)指定组。该't会匹配任何字符串't。最后，第二部分用反斜杠字符替换了这样的字符串：（\\\\四个因为this），以及第一组：$1。因此，您将任何子字符串替换't为\'t
The same thing is possible without regex, what you tried (see thisfor output):
没有正则表达式，同样的事情是可能的，你尝试了什么（见这个输出）：
engData = engData.replace("'t","\'t"); //note the assignment; Strings are immutable
回答by prime
Try this..
尝试这个..
String s = "can't";
s = s.replaceAll("'","\\'");
System.out.println(s);
out put :
输出 ：
can\'t
This will replace every ' occurences with \' in your string.
这将在您的字符串中用 \' 替换每个 ' 出现。
