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缓存字节流-写coppy方法

时间:2015-08-04 22:23:11      阅读:113      评论:0      收藏:0      [点我收藏+]

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package ba;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import java.util.*;

public class huancunTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Date d1=new Date();
		Date d2=new Date();
		long l1=d1.getTime();
		copy("G:/a.png","G:/test/a.png");
		long l2=d2.getTime();
		System.out.println(l2-l1);
		
	} 
	public static void copy(String str,String des){
		File srcFile = new File(str);
		File desFile = new File(des);
		BufferedInputStream bis = null;
		BufferedOutputStream bos = null;
		
		try {
			bis = new BufferedInputStream(new FileInputStream(srcFile));
			bos = new BufferedOutputStream(new FileOutputStream(desFile));
			
			byte[]b=new byte[1024];
			int len=0;
			try {
				while((len=bis.read(b))>0){
					bos.write(b,0,len);
				}
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			if(bis!=null){
				try {
					bis.close();
					bos.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		
		
	}

}

 

缓存字节流-写coppy方法

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原文地址:http://www.cnblogs.com/xiaoqisfzh/p/4703164.html

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