Android客户端使用套接字发送大文件,服务器接收的文件不完整
我想通过套接字从Android向服务器发送一个大文件,但服务器收到的文件不完整 android上的代码:Android客户端使用套接字发送大文件,服务器接收的文件不完整,android,sockets,streamwriter,Android,Sockets,Streamwriter,我想通过套接字从Android向服务器发送一个大文件,但服务器收到的文件不完整 android上的代码: Socket client = new Socket(ipStr, 4444); OutputStream outputStream = client.getOutputStream(); FileInputStream fileInputStream = new FileInputStream(file); BufferedInputStream bufferedInputStr
Socket client = new Socket(ipStr, 4444);
OutputStream outputStream = client.getOutputStream();
FileInputStream fileInputStream = new FileInputStream(file);
BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
byte[] buffer = new byte[512];
byte[] sendLen = getBytes(file.length(), true);
outputStream.write(sendLen);
outputStream.flush();
int count;
while ((count = fileInputStream.read(buffer)) > 0)
{
outputStream.write(buffer, 0, count);
}
outputStream.flush();
bufferedInputStream.close();
outputStream.close();
client.close();
服务器上的代码:
byte[] recvHead = new byte[8];
inStream.read(recvHead, 0, 8);
long recvLength = getLong(recvHead, false);
FileOutputStream file = new FileOutputStream(fileName, false);
byte[] buffer = new byte[8192];
int count = 0;
while (count < recvLength) {
int n = inStream.read(buffer);
if(n == -1)
break;
file.write(buffer, 0, n);
count += n;
}
有人能帮我吗?谢谢大家! 您不能假设您读取的是8个长度的字节。您可以在长度数组中读取一个字节。我将使用DataInputStream.readLong()来实现这一点,并使用DataOutputStream.writeLong()来编写它。或者,当您在一个文件后关闭时,完全去掉长度字,只需一直读到EOS
代码的其余部分看起来还可以。如果接收器在read()中阻塞,则数据仍在发送,而发送者仍在发送。实际上,我使用此代码来确保服务器接收到8个长度的字节<代码>int len=流内读取(recvHead,0,8);int pos=len;而(len>=0&&pos<8){len=inStream.read(recvHead,pos,8-pos);pos+=len;}问题是服务器可以接收正确的文件长度,但文件内容不完整。谢谢@user1656092,所以它还没有全部发送,正如您所说的,接收器仍然在read()中被阻塞。
FileOutputStream file2 = new FileOutputStream("/sdcard/testfile" , false);
while ((count = fileInputStream.read(buffer)) >= 0)
{
outputStream.write(buffer, 0, count);
outputStream.flush();
file2.write(buffer, 0, count);
file2.flush();
}