如何使用正则表达式在Java中处理字符串的一部分

Question

I have a string that looks like this:

String pathTokenString = "CMS/{brandPath}/Shows/{showPath}";

I want to remove the Shows part and everything that follows. I also want to replace "{brandPath}" with a token that I'm given.

This has been my approach. However, my string isn't getting updated at all:

//remove the '/Shows/{showPath}'
pathTokenString = pathTokenString.replace("/Shows$", "");

//replace passed in brandPath in the tokenString
String answer = pathTokenString.replace("{(.*?)}", brandPath);

Is there something wrong with my regular expressions?

Answer 1

You should use the replaceAll method instead of replace when you want to pass a regex string as the pattern to be replaced. Also your regex patterns should be updated:

pathTokenString = pathTokenString.replaceAll("/Shows.*$", "");

// The curly braces need to be escaped because they denote quantifiers
String answer = pathTokenString.replaceAll("\\{(.*?)\\}", brandPath);