java 将英文文章 按句子，标点符号分割，正则表达式

package com.gao;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;import java.nio.charset.Charset;import java.util.ArrayList;import java.util.Iterator;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;public class TestMain {private static final int MIN_THRESHOLD = 50;private static final int MAX_THRESHOLD = 80;private static List<String>  list = new ArrayList<String>();/** * @param args */public static void main(String[] args) {String str = null;try {InputStreamReader isr = new InputStreamReader(new FileInputStream(new File("D:\\Users\\gao\\Desktop\\1.txt")),Charset.defaultCharset());BufferedReader br = new BufferedReader(isr);StringBuffer sb = new StringBuffer(MAX_THRESHOLD);while ((str=br.readLine())!=null) {//String [] substrs = str.split("。|\\？|\\！|\\?|\\.|!");/*正则表达式：句子结束符*/String regEx="[。？！?.!]";Pattern p =Pattern.compile(regEx);Matcher m = p.matcher(str);/*按照句子结束符分割句子*/String[] substrs = p.split(str);/*将句子结束符连接到相应的句子后*/if(substrs.length > 0){    int count = 0;    while(count < substrs.length)    {        if(m.find())        {        substrs[count] += m.group();        }        count++;    }}//              //String [] substrs = str.split("[。？！?.!]"); for (int i=0;i<substrs.length;i++) {if (substrs[i].length()<MIN_THRESHOLD) {//语句小于要求的分割粒度sb.append(substrs[i]);//sb.append("||");if (sb.length()>MIN_THRESHOLD) {//System.out.println("A New TU: " + sb.toString());list.add(sb.toString());sb.delete(0, sb.length());}}else {//语句满足要求的分割粒度if(sb.length()!=0)//此时如果缓存有内容则应该先将缓存存入再存substrs[i]的内容  以保证原文顺序{list.add(sb.toString());//System.out.println("A New Tu:"+sb.toString());sb.delete(0, sb.length());}list.add(substrs[i]);//System.out.println("A New Tu:"+substrs[i]);}}}br.close();isr.close();//将分割好的tu放入List中以便传入数据库for (Iterator i = list.iterator(); i.hasNext();){   System.out.println(i.next()); }} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}