我正在为班级制作聊天服务器,并且在为离线用户记录消息时遇到问题。数据作为对象附加到日志文件中,随着您记录的更多,它的大小会增加。当我以收到消息的用户身份登录时,它只返回发送的第一条消息。我花了很多时间来解决这个问题,无法弄清楚我错过了什么。
输入:
if (exists)
ObjectInputStream in = null;
try{
in = new ObjectInputStream(new FileInputStream(uLog));
Message msgs;
Object obj = null;
while ((obj = in.readObject()) != null)
{
msgs = (Message) obj;
user.writeToUser(new Message("POST", "Offline Message from", msgs.getTo() +" "+ msgs.getText()));
}
in.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
boolean success = uLog.delete();
if (!success)
throw new IllegalArgumentException("Delete: deletion failed");
}
输出:
if(!usersList.getUserByName(msg.getTo()).getOnlineStatus())
{
ObjectOutputStream out;
try{
out = new ObjectOutputStream(new FileOutputStream(msg.getTo() + ".log", true));
user.writeToUser(new Message("PRIVATE", user.getUserName(), msg.getTo(), msg.getText()));
out.writeObject(new Message("PRIVATE", msg.getTo(), user.getUserName(), msg.getText()));
out.close();
}
catch (IOException e){
System.out.println("Exception");
}
}