替换文本文件内容

package po;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Pet {
    public static void main(String[] args) throws FileNotFoundException  {
        FileInputStream fis=null;
        InputStreamReader isr=null;
        BufferedReader br=null;
        
        FileOutputStream fos=null;
        OutputStreamWriter osw=null;
        BufferedWriter bw=null;
            
        try {
            //读取
            fis=new FileInputStream("D:\pet.template");
            isr=new InputStreamReader(fis);
            br=new BufferedReader(isr);
            //写入
            fos=new FileOutputStream("D:\pet.txt");
            osw =new OutputStreamWriter(fos);
            bw=new BufferedWriter(osw);
            
            String str="";
            StringBuffer sbf=new StringBuffer();
            while((str=br.readLine())!=null){
                sbf.append(str);
            }
            System.out.print("替换前：");
            System.out.println(sbf.toString());
            
            
            String str2=sbf.toString();
            str2=str2.replace("{name}", "欧欧");
            str2=str2.replace("{type}", "狗狗");
            str2=str2.replace("{master}", "李伟");
            System.out.print("替换后：");
            System.out.println(str2);
            bw.write(str2);
            bw.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally {
            try {
                bw.close();
                osw.close();
                fos.close();
                
                br.close();
                isr.close();
                fis.close();
                
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        }
        }
    
}