通过dataoutputstream发送字节数组后，接收到的字节数组不等于原始字节数组

Question

出于某些原因，我需要通过服务器套接字分别发送多个字节数组，客户端套接字将接收这些字节数组。发送字节数组后，发现客户端套接字接收的字节数组与服务器套接字接收的字节数组不相等。如果我使用ObjectOutputStream和ObjectInputStream，那么一切都很好，但是根据我的需要，我不能使用ObjectOutputStream和ObjectInputStream，因为我的服务器需要连接两个以上的套接字。

下面是服务器和客户端代码：

服务器（发件人）：

    private void sendData() throws IOException {
        DataOutputStream outputStream = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));

        File file = new File(filePath);
        byte[] fileByte = new byte[(int) file.length()];

        // Convert file into byte array
        FileInputStream fileInputStream = new FileInputStream(file);
        fileInputStream.read(fileByte);

        while (!decoder.isDecoded()) {
            byte[] packet = new byte[encoder.getPacketLength()];
            encoder.getPacket(packet, 0);

            if (Math.random() < 0.1)
                continue;

            // Send data HERE!!!
            outputStream.writeInt(encoder.getPacketLength());
            outputStream.write(packet);

            StringBuilder sb = new StringBuilder();
            for (byte value : packet) {
                sb.append(value);
            }
            serverLog("Packet content= " + sb.toString());

            decoder.addPacket(packet, 0);
        }

        outputStream.close();
        outputStream.flush();
        fileInputStream.close();
    }

客户（接收方）：

public void receiveData() throws UnknownHostException, IOException, ClassNotFoundException {
    in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

    DataInputStream dis = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
    int len = dis.readInt();

    while (!decoder.isDecoded()) {
        byte[] packet = new byte[len];

        dis.read(packet, 0, len);

        StringBuilder sb = new StringBuilder();
        for (byte value : packet) {
            sb.append(value);
        }
        messageArea.append("Packet content= " + sb.toString() + "\n");

        decoder.addPacket(packet, 0);
    }
}

来自服务器的日志：

Packet content= 8312654-7646-55-71-522462106-89115-98-107-66-9445-61-78-99-43-52528422-10765-3719-1243-114-115-5869-119-92-113591131276057-905042126-7557940-2850118-9737-6512759-93-393-89-96104-789-7694747-118-61-79-97-872-4369-82-11923-805-62-9527-38-1195-13107673425588-92-49-44-97-7811812416-781244-100
Packet content= -10295-4-73-809789-87-97-9095-55-11-7440100-2871-89-68-59-3739-2073-1286290-21-106-2-25-1263646-107-84-9-42-4491-418419-469395-61-52-32-85-38-107-8385-6559-1286575-56-1029-5991-7551-10390-25-94-5072-2318-62-12360-818-11719-73710076121-584012212645-20-170-45089-87401082110113-7-1034873-877
Packet content= -37-732-59-1071015223-34-2745-4322265-18-108-97126-22-56083-131-61-16069536-10-7092-36-50-96-72-3133-79-11751-3671-91-48-14-54-113-8295-124-18-78125-117-12811911042-34108-94-33-92-113268272-41-23992553-69-72997619-1166735417-76-126-58121-7595-443265-944-44-124104-201040-803310126-125-8449-8
Packet content= -102110606194-6037-2-63-6025-112-17-36-3629-93112-86-116-54-14118-124121315341-11923-119-12246-1-973-31-22-9-111-12614-37-1456-10456-9450-11823811378-779-111101-31-101-843217-124-16107-108107101-7743-108-100-5475113119-6647-7185-96-683-12710756-9896111-1072318-3982-6288-7496-5514-18373957-71108-3232
Packet content= -6689-124263-68321112-19-6730-68-12223-125105-51444110862-11063-114-41-76-5275-7-15105-865826-5049-12386124123-121-10460-863108-65-481142910461-97-11912453-10718-6711787-91-37-97910-22-1963-88-116114-138375-2082027-128126-8529-3632242-772-105106-35-41-44-573126-7512038-62-733838-434433-9-59
Packet content= -9652035246-1482-59-63699991-47-25-2-15127-55-42-97-106-11966-15-4344462-68-2-916794121-31-11164-40-73-8104342-69-38-122986-11584-57-106-35-49-120-15138-19121-32-88-62-5127-95114-26-34-75-377155-6911914-4210849-116-7028-8180-817585-108-76-3337-21-4589108-121794-85109-6810644-102101106-68-5-127
Packet content= -127-124-61-24479910112178-45-47-952540-122-70100-120-17-5114-127-69-12-38-100-111-21-111-44113-10-12490-72884-9549-1115580-7653-16100-7889-22103-747-476698-9-68-83-301112667-1712127-64-45-746-1054497-7071108-109-9-8946-4259-121-106-121-27-6761-3447-1177476-7271-95-75-107-42-331886-119-10578-6098-128-2287-52
Packet content= 5244-100-68-1215109-27-6810-774491-11-29102-6267-621964-975427701107495-33578037-1924-5611657210-46-16-94-53-92-5282-11353-10359-38-1-385212480-12710119-597634-108-67-49109101-69-7933-10189120-76104-46106-64223-44-10-4789-1213910192-125-60-5-20-37-901-5-104103-739314-4414-1123759-31-45-72
Packet content= 119-4161558-7832-8310329-118-91122-85-37-33-30-52-101087-123784011115-57-31-1166-31-55-43-13-49-5812464-16-1382-30-3810445117659-70810584-46113-11-5111-1251-428299112-816596-1091021353-4679-3526-10363100-10-4-318-49-117-10449103105-11190-94-5310633-2-123-5268-119124-12297-106-114-102110-35-12094-128
Packet content= -381-70-109-26112-2552-92-40-39-22966-36-69-118-116-19-4848-9-12869-102-4558-2198362-121-553776-84-118-93125-12374128555-8688-2-729-43126-3-10083-26-64119-6010577-12263-4-74-44-11028-216447727-5082-104100-3410673529-8970-27110-81-90-1221185-22-249510515-123-157817-43-11961-93141-8512-77-7352

来自客户端的日志：

Packet content= 8312654-7646-55-71-522462106-89115-98-107-66-9445-61-78-99-43-52528422-10765-3719-1243-114-115-5869-119-92-113591131276057-905042126-7557940-2850118-9737-6512759-93-393-89-96104-789-7694747-118-61-79-97-872-4369-82-11923-805-62-9527-38-1195-13107673425588-92-49-44-97-7811812416-781244-100
Packet content= 000110-10295-4-73-809789-87-97-9095-55-11-7440100-2871-89-68-59-3739-2073-1286290-21-106-2-25-1263646-107-84-9-42-4491-418419-469395-61-52-32-85-38-107-8385-6559-1286575-56-1029-5991-7551-10390-25-94-5072-2318-62-12360-818-11719-73710076121-584012212645-20-170-45089-87401082110113-7-103
Packet content= 4873-877000110-37-732-59-1071015223-34-2745-4322265-18-108-97126-22-56083-131-61-16069536-10-7092-36-50-96-72-3133-79-11751-3671-91-48-14-54-113-8295-124-18-78125-117-12811911042-34108-94-33-92-113268272-41-23992553-69-72997619-1166735417-76-126-58121-7595-443265-944-44-124104-201040
Packet content= -803310126-125-8449-8000110-102110606194-6037-2-63-6025-112-17-36-3629-93112-86-116-54-14118-124121315341-11923-119-12246-1-973-31-22-9-111-12614-37-1456-10456-9450-11823811378-779-111101-31-101-843217-124-16107-108107101-7743-108-100-5475113119-6647-7185-96-683-12710756-9896111-1072318-3982-6288
Packet content= -7496-5514-18373957-71108-3232000110-6689-124263-68321112-19-6730-68-12223-125105-51444110862-11063-114-41-76-5275-7-15105-865826-5049-12386124123-121-10460-863108-65-481142910461-97-11912453-10718-6711787-91-37-97910-22-1963-88-116114-138375-2082027-128126-8529-3632242-772-105106-35-41
Packet content= -44-573126-7512038-62-733838-434433-9-59000110-9652035246-1482-59-63699991-47-25-2-15127-55-42-97-106-11966-15-4344462-68-2-916794121-31-11164-40-73-8104342-69-38-122986-11584-57-106-35-49-120-15138-19121-32-88-62-5127-95114-26-34-75-377155-6911914-4210849-116-7028-8180-817585-108-76
Packet content= -3337-21-4589108-121794-85109-6810644-102101106-68-5-127000110-127-124-61-24479910112178-45-47-952540-122-70100-120-17-5114-127-69-12-38-100-111-21-111-44113-10-12490-72884-9549-1115580-7653-16100-7889-22103-747-476698-9-68-83-301112667-1712127-64-45-746-1054497-7071108-109-9-8946-4259-121-106-121-27-67
Packet content= 61-3447-1177476-7271-95-75-107-42-331886-119-10578-6098-128-2287-520001105244-100-68-1215109-27-6810-774491-11-29102-6267-621964-975427701107495-33578037-1924-5611657210-46-16-94-53-92-5282-11353-10359-38-1-385212480-12710119-597634-108-67-49109101-69-7933-10189120-76104-46106-64223-44
Packet content= -10-4789-1213910192-125-60-5-20-37-901-5-104103-739314-4414-1123759-31-45-72000110119-4161558-7832-8310329-118-91122-85-37-33-30-52-101087-123784011115-57-31-1166-31-55-43-13-49-5812464-16-1382-30-3810445117659-70810584-46113-11-5111-1251-428299112-816596-1091021353-4679-3526-10363100
Packet content= -10-4-318-49-117-10449103105-11190-94-5310633-2-123-5268-119124-12297-106-114-102110-35-12094-128000110-381-70-109-26112-2552-92-40-39-22966-36-69-118-116-19-4848-9-12869-102-4558-2198362-121-553776-84-118-93125-12374128555-8688-2-729-43126-3-10083-26-64119-6010577-12263-4-74-44-11028-216447727-5082

每个人都可以看到，在第一个数据包之后，总是有6个整数“000110”插入到接收的数据包中，我如何编辑这些代码来防止这个问题，并确保发送的数据包和接收的数据包是相等的？请帮帮我，我会很感激你的好意。：）

Answer 1

假设read()填充了缓冲区，而不检查返回值。它没有指定这样做，只是传输至少一个字节。使用readfilly()获得该行为。