【java IO】使用Java输入输出流 读取txt文件内数据，进行拼接后写入到另一个文件中

 package com.sxd.test.util;

 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;

 import org.junit.Test;

 public class CreateInsert {

     @Test
     public void test() throws IOException{

         //1.读取文件
         File file = new File("d:/new4.txt");
         InputStreamReader read = new InputStreamReader(new FileInputStream(file),"utf-8");//考虑到编码格式
         BufferedReader bu = new BufferedReader(read);
         //2.拼接字符串
         String lineText = null;
         String insert = "INSERT INTO [report].[dbo].[process] ([bgid]) VALUES ('";
         String insert2 = "');";
         //3.边读边写
         OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(new File("d:/写出文件.txt")));
         BufferedWriter wr = new BufferedWriter(out);

         while((lineText = bu.readLine()) != null){
             System.out.println(insert+lineText+insert2);
             wr.write(insert+lineText+insert2+"\r\n");
         }
         read.close();
         wr.close();
     }
 }