博客

package com;

import java.io.*;

public class test {

public static void Test(String oldfilePath,String newfilePath){
    File file = new File(oldfilePath);
    //判断文件存在并且是文件
    Boolean boo = file.exists()&&file.isFile();
    System.out.println(boo);
    if (boo) {
        BufferedReader bufferedReader = null;
        try {
            //构造一个BufferedReader类来读取文件
            bufferedReader = new BufferedReader(new FileReader(file));
            String linetxt = null;
            //result用来存储文件内容
            StringBuilder result = new StringBuilder();
            //按使用readLine方法，一次读一行
            while ((linetxt = bufferedReader.readLine()) != null) {
                System.out.println(linetxt);
                String newconttent = linetxt.replace("china","中国");//替换
                result.append(newconttent);
                File newfile = new File(newfilePath);
                PrintStream ps = new PrintStream(new FileOutputStream(newfile, true)); 
                ps.println(newconttent);// 往aim.txt文件里写入字符串
            }
            //输出读出的所有数据（StringBuilder类型）
            System.out.println(result);
            //对文件内容操作


        } catch (Exception e) {
            System.out.println("读取文件内容出错");
            e.printStackTrace();
        }finally {
            try {
                bufferedReader.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        }
    }else{
        System.out.println("找不到指定的文件");
    }
}



public static void main(String argv[]){
    String oldfilePath = "E:\\毕业设计图\\test\\data\\content.txt";//content.txt路径。记得改

    String newfilePath = "E:\\毕业设计图\\test\\data\\aim.txt";//aim.txt路径，记得改
    Test(oldfilePath,newfilePath);
}

}