Java获取控制台输入的内容写入txt文件（高性能）

红太狼 2022-02-02 04:39 460阅读 0赞

本节作为流的输入输出练习题。

使用的读取类有：InputStream、InputStreamReader、BufferedReader。

写入类：FileOutputStream、BufferedOutputStream

import java.io.*;
    
    /**
     * Java获取控制台输入的内容写入txt文件
     */
    public class WriteToFileByByte {
        // 被写入文件的文件路径
        private static final String PATH_NAME="src/Basics/IOStream/HelloWorld.txt";
    
        private static void TestSysInOut() {
            InputStream is = System.in;
            InputStreamReader isr = null;
            BufferedReader br = null;
    
            FileOutputStream fos = null;
            BufferedOutputStream bos = null;
    
            String str;
            byte[] readStr;
            try {
    
                isr = new InputStreamReader(is);
                br = new BufferedReader(isr);
    
                // true 开启不覆盖模式
                fos = new FileOutputStream(new File(PATH_NAME),true);
                bos = new BufferedOutputStream(fos);
    
                while (true) {
                    str = br.readLine();
                    if (str.equalsIgnoreCase("e")||str.equalsIgnoreCase("exit")){
                        break;
                    }
                    readStr = str.getBytes();
                    bos.write(readStr);
                    bos.write('\n');
                    bos.flush();
                    System.out.println("存入文件的字符串为："+str);
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if (br != null){
                        br.close();
                    }
    
                }catch (Exception e ){
                    e.printStackTrace();
                }finally {
                    System.out.println("Complete!");
                }
            }
        }
        public static void main(String[] args) {
            TestSysInOut();
        }
    }