java正则解析${}

java正则解析${}

 1 String property = "带有${}需要匹配的字符串";
 2 //懒匹配${}
 3 String regex = "\\$\\{(.*?)}";
 4 Pattern pattern = Pattern.compile(regex);
 5 Matcher matcher;
 6 //自旋进行最小匹配，直到无法匹配
 7 while((matcher = pattern.matcher(property)).find()) {
 8     //替换匹配内容
 9     property = property.replace(matcher.group(), System.getenv(matcher.group(1)));
10 }