限制JTextPane内存使用量

问题描述

我有一个应用程序，它不断地在套接字上接收数据，然后将这些数据记录到文件中，同时在JTextPane中显示这些数据。当然，当数据写入JTextPane的底层文档时，内存使用量会继续增加。

I have an application which continuously receives data on a socket, and then logs this data to a file while also displaying this data in a JTextPane. Naturally, as data is written to the underlying document of the JTextPane the memory usage continues to increase.

是否有一种简单的方法来限制允许使用JTextPane的内存？我希望JTextPane的工作方式类似于典型命令shell的命令历史记录的工作方式。

Is there a simple way of limiting the memory which the JTextPane is allowed use? I would like the JTextPane to work similar to how a typical command shell's command history works.

推荐答案

只需检查内容并擦除它相应的最大缓冲区大小..因为它是一个 JTextPane 你将使用textpane使用的文档类：

just check the content and wipe it accordingly to a maximum buffer size.. since it's a JTextPane you would work on document class used by textpane:

void clampBuffer(int incomingDataSize)
{
   Document doc = textPane.getStyledDocument();
   int overLength = doc.getLength() + incomingDataSize - BUFFER_SIZE;

   if (overLength > 0)
   {
      doc.remove(0, over_length);
   }
}

这只是我写的一个片段，没有亲自检查..它只是给你这个想法。当然应该在向textPane添加文本之前运行。

This is just a snippet I wrote, didn't check it personally.. it's just to give you the idea. Of course it should be run before adding text to textPane.

顺便说一句，如果你没有使用 JTextPane的丰富编辑器功能我建议你使用更加轻松的 JTextArea 。

Btw if you are not using the rich editor capabilities of the JTextPane I suggest you to use a JTextArea that is much ligher.

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