java.net.SocketException：软件导致连接中止：套接字写入错误
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java.net.SocketException: Software caused connection abort: socket write error
提问by npinti
I am trying to send an image from a Java desktop application to a J2ME application. The problem is that I am getting this exception:
我正在尝试将图像从 Java 桌面应用程序发送到 J2ME 应用程序。问题是我收到了这个异常：
java.net.SocketException: Software caused connection abort: socket write error
I have looked around on the net, and although this problem is not that rare, I was unable to find a concrete solution. I am transforming the image into a byte array before transferring it. These are the methods found on the desktop application and on the J2ME respectively
我在网上查了一下，虽然这个问题并不罕见，但我找不到具体的解决方案。在传输图像之前，我正在将图像转换为字节数组。这些是分别在桌面应用程序和 J2ME 上找到的方法
public void send(String ID, byte[] serverMessage) throws Exception
{
//Get the IP and Port of the person to which the message is to be sent.
String[] connectionDetails = this.userDetails.get(ID).split(",");
Socket sock = new Socket(InetAddress.getByName(connectionDetails[0]), Integer.parseInt(connectionDetails[1]));
OutputStream os = sock.getOutputStream();
for (int i = 0; i < serverMessage.length; i++)
{
os.write((int) serverMessage[i]);
}
os.flush();
os.close();
sock.close();
}
private void read(final StreamConnection slaveSock)
{
Runnable runnable = new Runnable()
{
public void run()
{
try
{
DataInputStream dataInputStream = slaveSock.openDataInputStream();
int inputChar;
StringBuffer results = new StringBuffer();
while ( (inputChar = dataInputStream.read()) != -1)
{
results.append((char) inputChar);
}
dataInputStream.close();
slaveSock.close();
parseMessage(results.toString());
results = null;
}
catch(Exception e)
{
e.printStackTrace();
Alert alertMsg = new Alert("Error", "An error has occured while reading a message from the server:\n" + e.getMessage(), null, AlertType.ERROR);
alertMsg.setTimeout(Alert.FOREVER);
myDisplay.setCurrent(alertMsg, resultScreen);
}
}
};
new Thread(runnable).start();
}
I am sending the message across a LAN, and I have no problems when I send short text messages instead of images. Also, I used wireshark and it seems that the desktop application is only sending part of the message. Any help would be highly appreciated. Also, everything works on the J2ME simulator.
我通过局域网发送消息，当我发送短文本消息而不是图像时，我没有问题。另外，我使用了wireshark，桌面应用程序似乎只发送了部分消息。任何帮助将不胜感激。此外，一切都适用于 J2ME 模拟器。
采纳答案by Stephen C
Please refer to the answers to Official reasons for "Software caused connection abort: socket write error"
请参阅“软件导致连接中止：套接字写入错误”的官方原因的答案
EDIT
编辑
I don't think there is much more that can be said in general, and there doesn't appear to be anything unusual about your code that would cause connections to abort. I would however note that:
我认为一般来说没有什么可以说的了，并且您的代码似乎没有任何不寻常的地方会导致连接中止。但是，我要注意的是：
- Casting the bytes to integers for the
writecall is unnecessary. It will be promoted automatically. - It would be better (simpler, potentially more efficient in terms of network traffic) to use
write(byte[])instead ofwrite(int). - The receiving side is assuming that each byte represents a complete character. This may be incorrect depending on how the sending side formed the bytes to be transmitted, and
- It would be a good idea to start by sending a byte count so that the receiving end can tell if something has gone wrong before the sender sent the whole byte array.
write不需要为调用将字节转换为整数。它会自动升级。- 这将是更好（更简单，更可能在网络流量方面有效）的使用
write(byte[])来代替write(int)。 - 接收方假设每个字节代表一个完整的字符。这可能是不正确的，具体取决于发送方如何形成要传输的字节，并且
- 最好先发送字节计数，以便接收端可以在发送方发送整个字节数组之前判断是否出现问题。
