java正则（替换功能）

Pattern pattern = Pattern.compile("\\$page\\\{(.\*?)\\\}");\         Matcher matcher = pattern.matcher(source);\         StringBuffer sbr = new StringBuffer();\         while (matcher.find()) {\             String mate1 =\              addPage(matcher.group(1));\             matcher.appendReplacement(sbr,mate1);\         }\         matcher.appendTail(sbr);\         System.out.println(sbr.toString());\ \         return sbr.toString();\ \         // String patternString = "\\\\$page\{(.*?)\}";//勉强匹配
// Pattern pattern = null;
// try {
// pattern = Pattern.compile(patternString);
// Matcher matcher = pattern.matcher(source);
// while (matcher.find()) {
// String mate = matcher.group(0);
// String mate1 = matcher.group(1);
// source = source.replace(mate, this.addPage(mate1));
// matcher.reset(source);
// }
// } catch (PatternSyntaxException e) {
// e.printStackTrace();
// throw new Exception(e);
// }
// return source;