我用Java做了一个简单的下载管理器，我的下载管理器能够下载却无法从网上下载大文件
我无法从网上下载大文件（超过 1 MB 的文件）。但是，我的程序能够从本地主机下载这些大文件。下载大文件还需要做什么吗？ 这是代码片段：
try {
//connection to the remote object referred to by the URL.
url = new URL(urlPath);
// connection to the Server
conn = (HttpURLConnection) url.openConnection();
// get the input stream from conn
in = new BufferedInputStream(conn.getInputStream());
// save the contents to a file
raf = new RandomAccessFile("output","rw");
byte[] buf = new byte[ BUFFER_SIZE ];
int read;
while( ((read = in.read(buf,0,BUFFER_SIZE)) != -1) )
{
raf.write(buf,0,BUFFER_SIZE);
}
} catch ( IOException e ) {
}
finally {
}
提前致谢。
I am not able to download large files from the net ( more than 1 mb file ). However, my program is able to download those large files from the localhost. Is there anything else that i need to do to download large files?
Here is the code snippet:
try {
//connection to the remote object referred to by the URL.
url = new URL(urlPath);
// connection to the Server
conn = (HttpURLConnection) url.openConnection();
// get the input stream from conn
in = new BufferedInputStream(conn.getInputStream());
// save the contents to a file
raf = new RandomAccessFile("output","rw");
byte[] buf = new byte[ BUFFER_SIZE ];
int read;
while( ((read = in.read(buf,0,BUFFER_SIZE)) != -1) )
{
raf.write(buf,0,BUFFER_SIZE);
}
} catch ( IOException e ) {
}
finally {
}
Thanks in advance.
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您忽略了实际读取的字节数：
您的
write调用总是写入整个缓冲区，即使您没有用read 填充它调用。你想要：You're ignoring how many bytes you've actually read:
Your
writecall always writes the whole buffer, even if you didn't fill it with thereadcall. You want: