Java ImageIO只写加载一半图片(插槽)
我正在尝试使用套接字将映像从客户端发送到服务器。我可以将图像发送到服务器目录,但发送的图像未满。 我应该换什么 客户端代码:Java ImageIO只写加载一半图片(插槽),java,sockets,javax.imageio,bytebuffer,bytearrayoutputstream,Java,Sockets,Javax.imageio,Bytebuffer,Bytearrayoutputstream,我正在尝试使用套接字将映像从客户端发送到服务器。我可以将图像发送到服务器目录,但发送的图像未满。 我应该换什么 客户端代码: Part filePart = request.getPart("file"); InputStream fileContent = filePart.getInputStream(); Socket clientSocket = new Socket("localhost",51519); OutputStream outputStream = cl
Part filePart = request.getPart("file");
InputStream fileContent = filePart.getInputStream();
Socket clientSocket = new Socket("localhost",51519);
OutputStream outputStream = clientSocket.getOutputStream();
try {
BufferedImage image = ImageIO.read(fileContent);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
ImageIO.write(image, "jpg", byteArrayOutputStream);
byte[] size = ByteBuffer.allocate(4).putInt(byteArrayOutputStream.size()).array();
outputStream.write(size);
outputStream.write(byteArrayOutputStream.toByteArray());
}
catch (SocketException ex){
BLL_Common.write_log(ex.toString(), "");
} catch (IOException ex) {
BLL_Common.write_log(ex.toString(), "");
} finally {
outputStream.flush();
}
服务器代码:
String dir = "web/Admin/img/";
ServerSocket serverSocket = new ServerSocket(51519);
while(true) {
try {
Socket socket = serverSocket.accept();
InputStream inputStream = socket.getInputStream();
byte[] sizeAr = new byte[4];
inputStream.read(sizeAr);
int size = ByteBuffer.wrap(sizeAr).asIntBuffer().get();
byte[] imageAr = new byte[size];
inputStream.read(imageAr);
BufferedImage image = ImageIO.read(new ByteArrayInputStream(imageAr));
String fileName = String.valueOf(System.currentTimeMillis());
ImageIO.write(image, "jpg", new File(dir + fileName + ".png"));
}
catch (SocketException ex) {
//...
} catch (IOException ex) {
//...
}
}
这是加载的图像:
您假设
read()
填充了缓冲区。您需要DataInputStream.readFully()
查看DataOutputStream.writeInt()
当然,您可以直接在套接字输入流上使用ImageIO.read()
,并避免所有这些,同样地,也可以直接在套接字输出流上使用ImageIO.write()
。但是,除非原始图像不是JPEG,否则您应该只复制字节,而不使用ImageIO
或BufferedImage