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Java可以通过Socket编程实现文件传输功能。以下是一个简单的示例代码:
- 服务器端代码:
import java.io.*; import java.net.*; public class FileServer { public static void main(String[] args) throws IOException { ServerSocket serverSocket = new ServerSocket(8888); Socket socket = serverSocket.accept(); InputStream in = socket.getInputStream(); FileOutputStream out = new FileOutputStream("output.txt"); byte[] buffer = new byte[1024]; int bytesRead; while ((bytesRead = in.read(buffer)) != -1) { out.write(buffer, 0, bytesRead); } out.close(); in.close(); socket.close(); serverSocket.close(); } }
- 客户端代码:
import java.io.*; import java.net.*; public class FileClient { public static void main(String[] args) throws IOException { Socket socket = new Socket("localhost", 8888); File file = new File("input.txt"); FileInputStream in = new FileInputStream(file); OutputStream out = socket.getOutputStream(); byte[] buffer = new byte[1024]; int bytesRead; while ((bytesRead = in.read(buffer)) != -1) { out.write(buffer, 0, bytesRead); } out.close(); in.close(); socket.close(); } }
以上代码实现了一个简单的文件传输功能,服务器端将客户端发送的文件保存到output.txt文件中。需要注意的是,实际开发中可能需要处理更多的异常情况,并考虑文件传输的安全性和效率等问题。