Java Regex String＃replaceAll替代

Java Regex String＃replaceAll替代

这是相对简单的情况

appendReplacement

：

// Prepare map of replacementsMap<String,String> replacement = new HashMap<>();replacement.put("bla", "hello,");replacement.put("red", "world!");// Use a pattern that matches three non-@s between two @sPattern p = Pattern.compile("@([^@]{3})@");Matcher m = p.matcher("@bla@This is a @red@line @bla@of text");StringBuffer sb = new StringBuffer();while (m.find()) {    // Group 1 captures what's between the @s    String tag = m.group(1);    String repString = replacement.get(tag);    if (repString == null) {        System.err.println("Tag @"+tag+"@ is unexpected.");        continue;    }    // Replacement could have special characters, e.g. ''    // Matcher.quoteReplacement() will deal with them correctly:    m.appendReplacement(sb, Matcher.quoteReplacement(repString));}m.appendTail(sb);String result = sb.toString();

演示