兩個特定單詞之間的文本Java

Question

我如何在“謝謝”和“真誠”之間插入文字

String emailtext= "Dear (RECIPIENT_PREFIX) (RECIPIENT_FIRST_NAME) (RECIPIENT_LAST_NAME), 
Thank you for being a part.....................more text ......

Thank you for your time. Filling out these sections with ...more     text....      for which you are chosen.

Sincerely,

xyz
adresss"

我試過了：

String pattern = "(Thank)((.|\n)*)(?=Sincerely,)";

Pattern p = Pattern.compile(pattern);
Matcher m = p.matcher(emailtext);

if (m.find( )) {
    System.out.println("Found value:" + m.group(0));
    System.out.println("Found value:" + m.group(1));
    System.out.println("Found value:" + m.group(2));
} else {
    System.out.println("NO MATCH");
}

錯誤顯示：

java.util.regex的java.lang.StackOverflowError（java.util.regex.Pattern $ Branch.match（Pattern.java:4502）） java.util.regex上的Pattern $ GroupHead.match（Pattern.java:4556）.java.util.regex.Pattern $ GroupTail.match（Pattern.java:4615）的Pattern $ GroupHead.match（Pattern.java:4683）在java.util.regex.Pattern $ BranchConn.match（Pattern.java:4466）在java.util.regex.Pattern $ CharProperty.match（Pattern.java:3694）在java.util.regex.Pattern $ Branch.match （Pattern.java:4502）在java.util.regex.Pattern $ GroupHead.match（Pattern.java:4556）在java.util.regex.Pattern $ Loop.match（Pattern.java:4683）

正確的ans應該顯示：

"Thank you for being a part.....................more text ......

Thank you for your time. Filling out these sections with ...more text.... for which you are chosen."

Answer 1

試試看：

String pattern = "(Thank)(.*)(?=Sincerely,)";

Pattern p = Pattern.compile(pattern,Pattern.DOTALL );
....

Answer 2

好吧，所以您應該檢查兩個單詞是否都出現在文本中

CharSequence s1 = "Thank";
CharSequence s2 = "Sincerely";
If (emailtext.contains(s1) && emailtext.contains(s2))

這樣它就不會拋出此類異常，那么您可以執行以下操作：

String s = emailtext.substring(emailtext.lastIndexOf("Thank"),
  emailtext.indexOf("Sincerely"));