JTextArea txt; txt.getText（）跳过" \ n" [英] JTextArea txt; txt.getText() skips "\n"

问题描述

我在TextArea中有一些文本，我想将其保存在文件中，我的代码在这里：

i have some text in TextArea, and i want to save it in file, my code is here:

private void SaveFile() {
    try {

        String content = txt.getText();

        File file = new File(filename);

        if (!file.exists()) {
            file.createNewFile();
        }

        FileWriter fw = new FileWriter(file.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(content);
        bw.close();

    } catch (IOException e) {
        e.printStackTrace();
    }

}

但不保存\ N;在新文件中，一切都在一行;
我可以预见那些进入吗？
提前谢谢

but it saves without "\n"; and in new file everything is on one line; ho can i foresee those "enters" too? thank you in advance

问题是因为记事本，所以这里有解决方案：

the problem was because of notepad, so here is solution:

private void SaveFile() {
    try {

        String content = txt.getText();
        content = content.replaceAll("(?!\\r)\\n", "\r\n");

        File file = new File(filename);

        // if file doesnt exists, then create it
        if (!file.exists()) {
            file.createNewFile();
        }

        FileWriter fw = new FileWriter(file.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(content);
        bw.close();

    } catch (IOException e) {
        e.printStackTrace();
    }

}

感谢您的帮助

推荐答案

它应该有效。尝试使用显示行结尾\ r和\ n的文本编辑器，看看会出现什么。

It should work. Try to use a text editor that display the line endings \r and \n and see what comes up.

如果你想确定文本文件可以由记事本等只能理解 \\\\ n 的Windows实用程序打开，你必须自己规范化：

If you want to be sure that the text file can be open by windows utilities like Notepad that only understand \r\n, you have to normalize it yourself this way:

content = content.replaceAll("(?!\\r)\\n", "\r\n");

这将取代所有 \ n 谁序列 \ r \ n 前面没有 \ r 。

This will replace all \n who is not preceded by a \r by the sequence \r\n.

这篇关于JTextArea txt; txt.getText（）跳过" \ n"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！