一、服務端
- 1、創建 ServerSocket 套接字對象,while(true)死循環監聽端口
- 2、accept() 方法獲取客戶端的連接對象,有新客戶端就開闢新線程
- 3、客戶端連接對象獲取字節輸入流,讀取客戶端發送的圖片
- 4、創建 File 對象,綁定上傳文件夾
- 5、創建字節輸出流
- 6、字節流得到圖片,將圖片寫進寫到文件夾中
- 7、發送消息給客戶端
代碼:
public class TCPServer {
public static void main(String[] args) throws IOException {
ServerSocket server = new ServerSocket(8888);
System.out.println("服務器開啓成功:端口號8888 ");
while (true) {
Socket socket = server.accept();
System.out.println("有新客戶端連接:" + socket.getRemoteSocketAddress());
new Thread(new Runnable() {
@Override
public void run() {
try {
InputStream is = socket.getInputStream();
File file = new File("d:\\upload");
if (!file.exists()) {
file.mkdirs();
}
String fileName = System.currentTimeMillis() + (new Random(99999).nextInt() + ".png");
FileOutputStream fos = new FileOutputStream(file + "\\" + fileName);
int len = 0;
byte[] bytes = new byte[1024];
while ((len = is.read(bytes)) != -1) {
fos.write(bytes, 0, len);
}
socket.getOutputStream().write("上傳成功".getBytes());
fos.close();
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}
}
}
二、客戶端
- 1、Socket 套接字連接服務器
- 2、通過 Socket 獲取字節輸出流,進行寫圖片
- 3、使用字節流對象讀取圖片流資源
- 4、讀取圖片,使用字節輸出流將圖片寫到服務器,採用字節數組進行緩衝
- 5、通過 Socket 套接字獲取字節輸入流,最後給服務器寫終止序列
- 6、獲取服務器端的反饋回來的信息
- 7、關閉流資源
代碼:
public class TCPClient {
public static void main(String[] args) throws IOException {
FileInputStream fis = new FileInputStream("d:\\bkg1.png");
Socket socket = new Socket("127.0.0.1", 8888);
OutputStream os = socket.getOutputStream();
int len = 0;
byte[] bytes = new byte[1024];
while ((len = fis.read(bytes)) != -1) {
os.write(bytes, 0, len);
}
socket.shutdownOutput();
InputStream is = socket.getInputStream();
while ((len = is.read(bytes)) != -1) {
System.out.println(new String(bytes, 0, len));
}
fis.close();
socket.close();
}
}