getBytes（）使用UTF-8不适用于大写德语Umlaut [英] getBytes() With UTF-8 Doesn't Work for Upper-Case German Umlauts

问题描述

对于开发，我使用 ResourceBundle 读取一个UTF-8编码的属性文件（我在该文件的Eclipse文件属性中设置）直接从我的资源-directory在IDE中（native2ascii用于生产的方式），例如：

For development I'm using ResourceBundle to read a UTF-8 encoded properties-file (I set that in Eclipse' file properties on that file) directly from my resources-directory in the IDE (native2ascii is used on the way to production), e.g.:

menu.file.open.label=&Öffnen...
label.btn.add.name=&Hinzufügen
label.btn.remove.name=&Löschen

由于这会导致使用非ASCII字符时的字符编码问题，我认为我会很高兴：

Since that causes issues with the character encoding when using non-ASCII characters I thought I'd be happy with:

ResourceBundle resourceBundle = ResourceBundle.getBundle("messages", Locale.getDefault());
String value = resourceBundle.getString(key);
value = new String(value.getBytes(), "UTF-8");

好吧，它适用于小写德语变音符号，但不适用于大写字母，ß也不起作用。这里是使用 getString（key）读取的值，以及使用 new String（value.getBytes（），UTF-8）转换后的值：

Well, it does work nicely for lower-case German umlauts, but not for the upper-case ones, the ß also doesn't work. Here's the value read with getString(key) and the value after the conversion with new String(value.getBytes(), "UTF-8"):

&Löschen => &Löschen
&Hinzufügen => &Hinzufügen

&Ã?ber => &??ber
&SchlieÃ?en => &Schlie??en
&Ã?ffnen... => &??ffnen...

最后三个应为：

&Ã?ber => &Über
&SchlieÃ?en => &Schließen
&Ã?ffnen... => &Öffnen...

我想我离真相不太远，我在这里缺少什么？

I guess that I'm not too far away from the truth, but what am I missing here?

Google发现类似的东西，但仍未得到答复。

Google found something similar, but that remained unanswered.

推荐答案

今天我和我的一个同事说话，他和其他答案都有同样的道路。所以我试图实现Jon Skeet所提到的，意味着创建与生产中相同的文件。因为在每次更改资源后重建项目是没有问题的，我没有做任何解决这个问题（我想这将是一些新的）让我排除它（即使它可能只是为了个人参考））。总之，这使用Eclipse的项目构建器。

Today I was talking to one of my colleagues and he was pretty much on the same path as the other answers have mentioned. So I tried to achieve what Jon Skeet had mentioned, meaning creating the same file as in production. Since rebuilding the project after each change of a resource is out of question and I hadn't done any of what solved this (and I guess this will be new to some) let me line it out (even if it may be just for personal reference ;) ). In short this uses Eclipse' project builders.

1. 创建一个Ant风格的build.xml

1. Create an Ant-style build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project>
    <property name="dir.resources" value="src/main/resources" />
    <property name="dir.target" value="bin/main" />

    <target name="native-to-ascii">
        <delete dir="${dir.target}" includes="**/*.properties" />
        <native2ascii src="${dir.resources}" dest="${dir.target}" includes="**/*.properties" />
    </target>
</project>

目的是删除目标目录中的属性文件，并使用 native2ascii 来重新创建它们。因为 native2ascii 不会覆盖现有文件，所以必须删除。

Its intention is to delete the properties-files in the target directory and use native2ascii to recreate them. The delete is necessary as native2ascii won't overwrite existing files.

如果编辑属性文件并保存，它应该在输出文件夹中自动转换为ASCII。您可以尝试输入ü，其最终应为 \\\ü 。

That should have been it. If you edit a properties-file and save it, it should automatically be converted to ASCII in the output folder. You can try with entering ü, which should end up as \u00fc.

请注意，如果你有很多属性文件，这可能需要一些时间。只是不要保存每次按键。 ：）

Note that if you have a lot of properties-files, this may take some time. Just don't save after every keypress. :)

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