package push;import java.util.HashMap;import java.util.Map;import java.util.regex.Matcher;import java.util.regex.Pattern;public class MatchContent {    public static void main(String[] args) {        String  split = "###第\\d+章";        String content = "###第1章aaa\n ###第4章ccc\n ###第2章bbb\n ";        Pattern p = Pattern.compile(split);        Matcher m = p.matcher(content);        int tempStart = 0;        int tempEnd = 0;        int tempChapterId = 0;        Map
     
       chapterMap = new TreeMap
      
       ();        if(m.find()) {            tempStart = m.start();            tempChapterId = Integer.valueOf(content.substring(m.start(),m.end()).replace("#", "").replace("第", "").replace("章", ""));        }        while(m.find()) {            tempEnd=m.start();            chapterMap.put(tempChapterId, content.substring(tempStart,tempEnd));            tempStart = tempEnd;            tempChapterId = Integer.valueOf(content.substring(m.start(),m.end()).replace("#", "").replace("第", "").replace("章", ""));                                }        if(tempStart!=0) {            chapterMap.put(tempChapterId, content.substring(tempStart));        }                for(Integer at:chapterMap.keySet()) {            System.out.println("章节数:" + at + " 内容:" + chapterMap.get(at).replace("#", ""));        }    }}
      
     

 

输出是

章节数:1 内容:第1章aaa

章节数:2 内容:第2章bbb

章节数:4 内容:第4章ccc