java - 将 ' (single quote once) but not ' '(单引号两次)替换为 '||' '' 的正则表达式

Question

在下一行中，如果我们有单引号 (')，那么我们必须将其替换为 '||'''，但如果我们有两次单引号 ('')，那么它应该保持原样。

我尝试了下面的一段代码，但没有给我正确的输出。

代码片段:

static String replaceSingleQuoteOnly = "('(?!')'{0})";
String line2 = "Your Form xyz doesn't show the same child''s name as the name in your account with us.";
System.out.println(line2.replaceAll(replaceSingleQuoteOnly, "'||'''"));

以上代码的实际输出:

Your Form xyz doesn'||'''t show the same child''||'''s name as the name in your account with us.

预期结果:

Your Form xyz doesn'||'''t show the same child''s name as the name in your account with us.

Regular expression is replacing child''s with child''||'''s. child''s should remain as it is.

Answer 1

您可以使用 lookarounds为此，例如:

String replaceSingleQuoteOnly = "(?<!')'(?!')";
String line2 = "Your Form xyz doesn't show the same child''s name as the name in your account with us.";
System.out.println(line2.replaceAll(replaceSingleQuoteOnly, "'||'''"));