0802作业1替换文本文件内容

package LianXi1;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

public class ReaderAndWriterFile {
    public void replaceFile(String file1,String file2){
        BufferedReader reader = null;
        BufferedWriter writer = null;
        try{
            //创建FileReader对象和FileWriter对象
            //中文内容编码问题
            //FileReader fr = new FileReader(file1);
            FileInputStream fis = new FileInputStream(file1);
            InputStreamReader isr =new InputStreamReader(fis,"utf-8");
            FileWriter fw = new FileWriter(file2);
            //创建输入、输出流对象
            reader = new BufferedReader(isr);
            writer = new BufferedWriter(fw);
            String line = null;
            StringBuffer sbf = new StringBuffer();
            //循环读取并追加字符
            while((line = reader.readLine())!=null){
                sbf.append(line);
            }
            System.out.println("替换前："+sbf);
            /*替换内容*/
            String newString = sbf.toString().replace("{name}","欧欧");
            newString = newString.replace("{type}","狗狗");
            newString = newString.replace("{master}","李伟");
            System.out.println("替换后："+newString);
            writer.write(newString);//写入文件
        }catch(IOException e){
            e.printStackTrace();
        }finally{
            //关闭 reader和 writer.
            try{
                if(reader!=null)
                    reader.close();
                if(reader!=null)
                    writer.close();
            }catch(IOException e){
                e.printStackTrace();
            }    
        }
    }
    public static void main(String[] args) {
        ReaderAndWriterFile obj = new ReaderAndWriterFile();
        obj.replaceFile("c:\\pe.template", "c:\\myDoc\\pet.txt");
        System.out.println(Charset.defaultCharset());
        }
}