Question

我正在使用java进行文件传输线程

这是服务器代码

(fileWriter = new BufferedOutputStream(fileTransferSocket.getOutputStream()))

        try {
            BufferedInputStream fileReader = new BufferedInputStream(new FileInputStream(CLIENT_PATH + "/" + filename));

            int packet;

            while((packet = fileReader.read()) != -1)
                fileWriter.write(packet);

            fileWriter.flush();
            fileReader.close();

            System.out.println(filename + " send complete");
        }

客户代码

(fileReader = new BufferedInputStream(fileTransferSocket.getInputStream()))

            try {
                BufferedOutputStream fileWriter = new BufferedOutputStream(new FileOutputStream(new File(PROGRAM_PATH + "/" + filename)));

                int packet;

                while((packet = fileReader.read()) != -1)
                    fileWriter.write(packet);

                System.out.println(filename + " receive complete.");
                fileWriter.close();
            }

服务器打印

    System.out.println(filename + " send complete");

这意味着服务器发送文件的每个字节。

但是，客户端无法打印

System.out.println(filename + " receive complete.");

我检查了循环运行的次数（Checked Both，服务器和客户端）

while while循环运行685次

我认为Client的while循环无法识别文件传输结束。

任何人都知道问题？

Answer 1

要将EOF发送到套接字，请关闭服务器上的fileWriter。

while((packet = fileReader.read()) != -1)
   fileWriter.write(packet);

fileWriter.close(); // note
fileReader.close();

Answer 2

您可以在服务中测试print -1以告知转换的结束：

while((packet = fileReader.read()) != -1)
            fileWriter.write(packet);
fileWriter.write(-1);

客户端无法识别文件流结束

2 个答案: