1 package com.twod3z; 2  3 import java.io.*; 4  5 /** 6  * @program: com.twod3z 7  * @description:替换文本文件内容 8  * @author: Mr.Lin 9  * @create: 2019年8月3日10  **/11 public class ReaderAndWriterDemo {12     public static void main(String[] args) {13         FileInputStream fis = null;14         InputStreamReader isr = null;15         BufferedReader br = null;16         17         FileOutputStream fos = null;18         OutputStreamWriter osw = null;19         BufferedWriter bw = null;20         21         try {22         23             fis = new FileInputStream("d:/mydoc/pet.template");24             isr = new InputStreamReader(fis);25             br = new BufferedReader(isr);26             27             fos = new FileOutputStream("d:/mydoc/newpet");28             osw = new OutputStreamWriter(fos);29             bw = new BufferedWriter(osw);30             31             String s= "";32             String s2 = "";33             System.out.print("替换前：");34             while( (s = br.readLine())!=null ) {35                 System.out.print(s);36                 s2+=s;37             }38             39             s2 = s2.replace("{name}", "小黑");40             s2 = s2.replace("{type}", "狗狗");41             s2 = s2.replace("{master}", "李伟");42             System.out.println("\n替换后："+s2);43             44             bw.write(s2);45             46         } catch (FileNotFoundException e) {47             // TODO Auto-generated catch block48             e.printStackTrace();49         } catch (IOException e) {50             // TODO Auto-generated catch block51             e.printStackTrace();52         } finally {53             try {54                 bw.close();55                 osw.close();56                 fos.close();57                 br.close();58                 isr.close();59                 fis.close();60             } catch (IOException e) {61                 // TODO Auto-generated catch block62                 e.printStackTrace();63             }64             65         }66         67     }            68 }