https://blog.csdn.net/u012903926/article/details/45967767
package com.mvc.test;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class FileCopyTest {
public static void main(String[] args) {
String filePath="D:\\poi\\test.xls";
File file = new File(filePath);
File file1 =new File("D:\\poi\\test");
if(!file1.exists()){
file1.mkdir();
}
copyFile(filePath,"D:\\poi\\test");
try {
FileInputStream in = new FileInputStream(file);
BufferedInputStream bi = new BufferedInputStream(in);
File file2 = new File("D:\\poi\\test\\test.xls");
FileOutputStream out = new FileOutputStream(file2);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static void copyFile(String srcPathStr, String desPathStr) {
//1.获取源文件的名称
String newFileName = srcPathStr.substring(srcPathStr.lastIndexOf("\\")+1); //目标文件地址
System.out.println(newFileName);
desPathStr = desPathStr + File.separator + newFileName; //源文件地址
System.out.println(desPathStr);
try{
//2.创建输入输出流对象
FileInputStream fis = new FileInputStream(srcPathStr);
FileOutputStream fos = new FileOutputStream(desPathStr);
//创建搬运工具
byte datas[] = new byte[1024*8];
//创建长度
int len = 0;
//循环读取数据
while((len = fis.read(datas))!=-1){
fos.write(datas,0,len);
}
//3.释放资源
fis.close();
fis.close();
}catch (Exception e){
e.printStackTrace();
}
}
}