package utils;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
public class FileUtils {
public static void main(String[] args) {
long start = System.currentTimeMillis();
copy("F:/bak/bak9/v1/AddProduct.ftl", "F:/bak/bak9/v1/AddProduct1.ftl");
System.out.println("耗时："+(System.currentTimeMillis() - start));
}
/**
* 文件拷贝
* @param sourceFile
* @param targetFile
*/
public static void copy(String sourceFile, String targetFile) {
try {
write(new FileInputStream(sourceFile), targetFile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
/**
* 将输入流写入文件
* @param inputStream
* @param targetFile
*/
public static void writeToFile(InputStream inputStream, String targetFile) {
write(inputStream, targetFile);
}
public static void write(InputStream inputStream, String targetFile) {
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
try {
bis = new BufferedInputStream(inputStream);
bos = new BufferedOutputStream(new FileOutputStream(targetFile));
byte[] buff = new byte[1024 * 1024 * 2];
int bytesRead;
while ((bytesRead = bis.read(buff)) != -1) {
bos.write(buff, 0, bytesRead);
}
}catch (IOException e) {
e.printStackTrace();
}finally {
try {
bos.close();
bis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
