IO操作

我发现python真是一门胶水语言，语法简介，代码量很少。举个例子，就拿io操作例子吧，Java需要大量的代码，异常判断，python两句话搞定。

python

#!/usr/bin/python3
# -*- coding: UTF-8 -*-


#write file
with open("test.txt","wt") as out_file:
    out_file.write("测试写入文件")


#read file
with open("test.txt","rt") as in_file:
    text = in_file.read()
print(text)

java

package org.java.base.algorithm;

import java.io.*;

/**
 * @ClassName IOTest
 * @Description TODO
 * @Author liuhaihua
 * @Date 2021/7/28 21:45
 * @Version 1.0
 */
public class IOTest {
  public   static  void main(String[] args){
    String filepath ="/Users/liuhaihua/logs/11.txt";
    String msg ="你好，这是一个测试";
    writeFile(filepath,msg);
    System.out.println(readFile(filepath));

  }

  /**
   * 写文件
   */
  public   static   void  writeFile(String filepath,String msg){

    try {
      File file = new File(filepath);
      if (file.exists()) {//存在
        file.delete();//删除再建
        file.createNewFile();
      } else {
        file.createNewFile();//不存在直接创建
      }
      FileWriter fw = new FileWriter(file);//文件写IO
      fw.write(msg);
      fw.flush();
      fw.close();
    }catch (Exception e){
      e.printStackTrace();
    }


  }

  /**
   * 读文件
   */
  public   static  String readFile(String filepath){
    String temp="";
    String str ="";
    try {
      File file = new File(filepath);
      FileReader fr = new FileReader(file);
      BufferedReader br = new BufferedReader(fr);//文件读IO
      while((temp = br.readLine())!=null){//读到结束为止
        str += (temp+"\n");
      }
      br.close();
      fr.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return str;

  }
}