Java nio拷贝文件的时候出现死循环

Question

niojava死循环

Answer 1

  不知道，可能是flip和compact的问题，要怎么写才正确啊。

Answer 2

原来是这样
public static void main(String[] args) throws IOException {
FileInputStream inFile = new FileInputStream("C:/Documents and Settings/Administrator/桌面/qq.docx");
FileOutputStream outFile = new FileOutputStream("C:/Documents and Settings/Administrator/桌面/oo.docx");

FileChannel inChannel = inFile.getChannel();
FileChannel outChannel = outFile.getChannel();
ByteBuffer buffer = ByteBuffer.allocate(1024*1024);
int bytesRead = 0;
while(bytesRead >=0 ){
if(bytesRead != -1) bytesRead = inChannel.read(buffer);
buffer.flip();
outChannel.write(buffer);
buffer.compact();    //position = n+1; limit = capacity
}
buffer.flip();
while(buffer.hasRemaining())    //position < limit
outChannel.write(buffer);

inFile.close();
outFile.close();
}