将数据库数据保存到txt文件

package com.zoomy.excel;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;


import java.io.*;



@SpringBootTest
class ExcelApplicationTests {

    @Test
    void contextLoads() throws IOException {

   
        String fileName = "test.txt";
        String txt = "E:\test\" + fileName;
        File file = new File(txt);
        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8"));
        //数据，在TXT输出的内容
        out.write("aaaa");
        out.flush();// 把缓存区内容压入文件
        out.close();// 最后记得关闭文件


    }

}