Java基于对比TXT文件，输出不同差异以及存储

需求：两个文本文件，不同行数，相同数据保留，差异数据输出到另一文件中
可输出为TXT、CSV、HTML格式

package text;

import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;



public class Text
{
    public static void main(String[] args)
    {
        Text text = new Text();
        text.read();
    }

    public void read()
    {
        String s;
        BufferedReader bufferedReader1 = null;
        BufferedReader bufferedReader2 = null;

        try
        {
            //读取本地指定盘符文件
//            bufferedReader1 = new BufferedReader(new InputStreamReader(new FileInputStream(new File("F:\文本1.txt"))));
//            bufferedReader2 = new BufferedReader(new InputStreamReader(new FileInputStream(new File("F:\文本2.txt"))));
            //读取项目中指定文件
            bufferedReader1 = new BufferedReader(new InputStreamReader(new FileInputStream(new File("文本1.txt"))));
            bufferedReader2 = new BufferedReader(new InputStreamReader(new FileInputStream(new File("文本2.txt"))));

            ArrayList arrayList1 = new ArrayList<>();
            ArrayList arrayList2 = new ArrayList<>();

            StringBuffer stringBuffer = new StringBuffer("/cum/");
            while ((s = bufferedReader1.readLine()) != null)
            {
                

                //第一种写法
                s = s.contains(stringBuffer)? s.substring(5) : s;
                arrayList1.add(s);

                //第二种写法
//                if (s.contains(stringBuffer))
//                {
//                    //存储数组中
//                    arrayList1.add(s.substring(5));
//                }
//                arrayList1.add(s);


            }
            while ((s = bufferedReader2.readLine()) != null)
            {
                //存储数组中
                arrayList2.add(s);
            }
            //过滤不同数据进行存储
            List collect = arrayList2.stream().filter(s1 -> !arrayList1.contains(s1)).collect(Collectors.toList());
            //输出查看是否正确
            System.out.println(collect);
            System.out.println("保存文件");
            
            File outFile = new File("F:/输出文件.txt");
            //设置编码格式以及大小
            Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile, true), "UTF-8"), 10240);
            //遍历输出并进行存储
            for (int i = 0; i < collect.size(); i++)
            {
                out.write(collect.get(i) + "rn");
            }
            out.flush();
            out.close();
            System.out.println("输出结束~~~~~");
        } catch (IOException e)
        {
            e.printStackTrace();
        } finally
        {
            // 释放资源
            if (bufferedReader1 != null)
            {
                try
                {
                    bufferedReader1.close();
                } catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            if (bufferedReader2 != null)
            {
                try
                {
                    bufferedReader2.close();
                } catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
        }
    }

}

1. 控制台展示
2. 本地指定盘符查看是否输出
   
3. 更换存储格式
   
   测试成功！！！