java读写文件操作，java读写操作,package test

java读写文件操作，java读写操作,package test

package test;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStreamReader;import java.util.regex.Matcher;import java.util.regex.Pattern;public class ReadTxtUtils {    /**     * @param args     */    public static void main(String[] args) {        String regEx = "['   ']+"; // 一个或多个空格        Pattern p = Pattern.compile(regEx);        try {            String encoding = "UTF8"; // 字符编码(可解决中文乱码问题 )            File file = new File("d:/jinzhou.txt");            if (file.isFile() && file.exists()) {                InputStreamReader read = new InputStreamReader(new FileInputStream(file), encoding);                BufferedReader bufferedReader = new BufferedReader(read);                FileOutputStream out = null;                   out = new FileOutputStream(new File("D:/jinzhou1.txt"));                 String lineTXT = null;                int count = -1;                while ((lineTXT = bufferedReader.readLine()) != null) {                    count += 1;                    Matcher m = p.matcher(lineTXT);                    String str = count + "," + m.replaceAll(",").trim();                    System.out.println(str.substring(0, str.length() - 1));                    out.write(str.substring(0, str.length() - 1).getBytes());                  }                read.close();                out.close();            } else {                System.out.println("找不到指定的文件！");            }        } catch (Exception e) {            System.out.println("读取文件内容操作出错");            e.printStackTrace();        }    }}