请高手看看，这个程序有什么问题，为什么拷贝后的文件比原文件小阿

[robustkele]

import java.io.*;

public class FileCopy {
public static void main(String[] args) {
int temp = 0;

try {
BufferedReader br = new BufferedReader(new FileReader("d:\\111042010449.wmv"));
BufferedWriter bw = new BufferedWriter(new FileWriter("d:\\aaa.wmv"));
while((temp=br.read()) !=-1) {
bw.write(temp);
}
br.close();
bw.flush();
bw.close();
}catch (IOException e) {
e.printStackTrace();
System.out.println("文件读取错误！！！");
}
System.out.println("文件拷贝成功！！！");
}
}

谢谢了！！！

[robustkele]

试了啊，还是不行啊

[galois_godel]

用ByteInputStream和ByteOutputStream

[robustkele]

好像没有ByteInputStream和ByteOutputStream

我的jdk是1.6.0.2的

[jingtao8177]

up

[robustkele]

我自己解决了

import java.io.*;

public class FileCopy {
public static void main(String[] args) {
int temp = 0;

try {

BufferedInputStream bis = new BufferedInputStream(new FileInputStream("d:\\111042010449.wmv"));
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("d:\\1110.wmv"));
//BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("d:\\111042010449.wmv")));
//BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("d:\\afa1af.wmv")));
while((temp=bis.read()) !=-1) {
bos.write(temp);
}
bis.close();
bos.flush();
bos.close();
}catch (IOException e) {
e.printStackTrace();
System.out.println("文件读取错误！！！");
}
System.out.println("文件拷贝成功！！！");
}
}

[robustkele]

import java.io.*;

public class FileCopy {
public static void main(String[] args) {
int temp = 0;

try {

BufferedInputStream bis = new BufferedInputStream(new FileInputStream("d:\\111042010449.wmv"));
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream("d:\\1110.wmv"));
while((temp=bis.read()) !=-1) {
bos.write(temp);
}
bis.close();
bos.flush();
bos.close();
}catch (IOException e) {
e.printStackTrace();
System.out.println("文件读取错误！！！");
}
System.out.println("文件拷贝成功！！！");
}
}

[比特灵]

据说是字体的原因。。。删除系统自带字体之外的其它字体试下。

[robustkele]

怎么没人回答阿

[dreamover]

流文件别用Reader、Writer，用InputStream和OutputStream

[dreamover]

二进制文件都用stream