我正在通过多个TCP套接字（多个随机端口）发送一些文件，但每个发送的文件最终都会被破坏。 我们首先测试了这个只有一个插槽的独立程序，它工作正常。但是现在在我们的最终项目中实现了所有文件都被破坏了。 我无法打开任何图像，mp3文件......
这是文件发件人：
public class FileSenderThread implements Runnable {
// Make a serverSocket
protected ServerSocket serverSocket = null;
protected Socket socket = null;
protected String fileName = null;
protected Long fileSize = null;
protected String pathName = null;
protected int port = 8500;
public FileSenderThread(String name, Long size, int portNumber, String path) throws IOException {
// get socket connection
System.out.println("Init file transfer sender");
this.port = portNumber;
serverSocket = new ServerSocket(port);
this.fileName = name;
this.fileSize = size;
this.pathName = path;
}
public void run() {
try {
socket = serverSocket.accept();
System.out.println("Accepted connection : " + socket);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
System.out.println("Sending " + fileName);
// find the file & the size
File transferFile = new File(pathName + fileName);
System.out.println("size:" + fileSize);
DataOutputStream outsize = new DataOutputStream(
socket.getOutputStream());
outsize.writeLong(transferFile.length());
// make bytearray from file
byte[] bytearray = new byte[(int) transferFile.length()];
FileInputStream fin = new FileInputStream(transferFile);
BufferedInputStream bin = new BufferedInputStream(fin);
bin.read(bytearray, 0, bytearray.length);
System.out.println(bytearray.length);
// open OutputStream and write bytearray
OutputStream os = socket.getOutputStream();
os.write(bytearray, 0, bytearray.length);
os.flush();
fin.close();
bin.close();
socket.close();
System.out.println(fileName + " transfer complete");
} catch (IOException ex) {
System.out.println(ex);
}
}
}
这里是文件接收器：
public class FileReceiverThread implements Runnable {
// Make a socket
protected Socket socket = null;
protected String fileName = null;
protected Long fileSize = null;
protected int port = 8500;
public FileReceiverThread(String clientIp, String name, Long size, int randomPort)
throws IOException {
// get socket connection
this.port = randomPort;
System.out.println(clientIp);
Socket socket = new Socket(clientIp, port);
System.out.println("Connected to: " + socket);
this.socket = socket;
this.fileName = name;
this.fileSize = size;
}
public void run() {
int bytesRead;
int currentTot = 0;
int size = fileSize.intValue();
// Create a buffer to hold temporary data
byte[] byteArray = new byte[size];
// Collect data
InputStream iStream;
try {
iStream = socket.getInputStream();
// Open a new file to write to
FileOutputStream foStream = new FileOutputStream("files/replicated/" + fileName);
// Write data to file via byteArray
BufferedOutputStream boStream = new BufferedOutputStream(foStream);
// Open inputStream to read from server
bytesRead = iStream.read(byteArray, 0, byteArray.length);
currentTot = bytesRead;
do {
// Read from inputStream into byteArray (buffer), start offset
// in byteArray, maximum bytes to read from server in total
// bytesRead is the number of bytes read in one loop from server
bytesRead = iStream.read(byteArray, currentTot,
(byteArray.length - currentTot));
// return value from bytesRead
if (bytesRead >= 0) {
currentTot += bytesRead;
}
// if return value > 0, the file has been downloaded
} while (bytesRead > -1);
// Finish and write to file
boStream.write(byteArray, 0, currentTot);
System.out.println(fileName + " saved");
// Close and empty outputBuffer
boStream.flush();
boStream.close();
foStream.close();
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
我们在主要课程中实际做的是：