Question

java 如何读写远程mp3文件

想要将一个远程的mp3文件 （例如：www.baidu.com/a.mp3） 读取保存到本地，在本地创建a.mp3，用java如何实现。谢谢了。

Answer 1

//:URLReader.java ==================

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.net.URL;
public class URLReader {
public static void readAndSave(String url,String fileFullName)throws Exception{
System.out.println("Starting.");
URL u = new URL(url);
byte[] buffer = new byte[1024*8];
int read;
int ava = 0;
long start = System.currentTimeMillis();
BufferedInputStream bin = new BufferedInputStream(u.openStream());
BufferedOutputStream bout = new BufferedOutputStream(new FileOutputStream(fileFullName));
while((read=bin.read(buffer))>-1){
bout.write(buffer,0,read);
ava+=read;
long speed = ava/(System.currentTimeMillis()-start);
System.out.println("Download: "+ava+" byte(s)"+" avg speed: "+speed+" (kb/s)");
}
bout.flush();
bout.close();
System.out.println("Done. size:"+ava+" byte(s)");
}
public static void main(String[] args) throws Exception {
URLReader.readAndSave(
"http://51hr.28tel.com.tw/UploadFile/Record/20090531114140.mp3",
"d:/双人舞.mp3");
}
}

======================================================
输出显示:
Starting.
Download: 8192 byte(s) avg speed: 6 (kb/s)
Download: 8385 byte(s) avg speed: 6 (kb/s)
Download: 16577 byte(s) avg speed: 11 (kb/s)
Download: 17025 byte(s) avg speed: 11 (kb/s)
Download: 25217 byte(s) avg speed: 15 (kb/s)
Download: 25665 byte(s) avg speed: 16 (kb/s)
Download: 33857 byte(s) avg speed: 19 (kb/s)
Download: 34305 byte(s) avg speed: 19 (kb/s)