在 Java 中，哪种编码方案是 8 位 US ASCII？
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in Java, which encoding scheme is 8-bit US ASCII?
提问by Martin08
I want to write a string to a file which expects an 8-bit US ASCIIencoding.
我想将一个字符串写入一个需要8-bit US ASCII编码的文件。
Which encoding scheme should I use for the method String.getBytes(encodingScheme)?
我应该为该方法使用哪种编码方案String.getBytes(encodingScheme)？
Thanks.
谢谢。
回答by phihag
ASCII is a 7bit encoding scheme, there is no "8-bit ASCII".
ASCII 是 7 位编码方案，没有“8 位 ASCII”。
However, many encodings are ASCII-compatible, and some are 8bit transparent (i.e. every binary series maps to a valid character string, and vice versa, useful if you're sending binary data over a character channel without encoding it in base64 or so). If you just want to be ASCII-compatible, UTF-8is the best choice; if you need 8 bit transparency, ISO-8859-1.
然而，许多编码是 ASCII 兼容的，有些是 8 位透明的（即每个二进制系列映射到一个有效的字符串，反之亦然，如果您通过字符通道发送二进制数据而不使用 base64 左右编码，则非常有用） . 如果只想兼容ASCII，UTF-8是最好的选择；如果您需要 8 位透明度，ISO-8859-1.
Note that the above advice is only useful if you want to transport ASCII-only strings or 8bit binary ones. In most cases, you actually want to transfer arbitrary strings, and there's no way around finding the proper encoding for these.
请注意，上述建议仅在您想传输纯 ASCII 字符串或 8 位二进制字符串时才有用。在大多数情况下，您实际上想要传输任意字符串，并且没有办法为这些找到正确的编码。
回答by Jesse Barnum
US-ASCII
US-ASCII
The list of encodings is here: https://docs.oracle.com/javase/8/docs/technotes/guides/intl/encoding.doc.html
编码列表在这里：https: //docs.oracle.com/javase/8/docs/technotes/guides/intl/encoding.doc.html
回答by Jon Skeet
There's no such thing as "8-bit ASCII". There are several 8-bit "extensions" to ASCII, including ISO-8859-1and Windows-1252. Those are probably the most common ones, but they're not the same. You really need to find out exactlywhich encoding is expected.
没有“8 位 ASCII”这样的东西。ASCII 有几个 8 位“扩展”，包括ISO-8859-1和Windows-1252。这些可能是最常见的，但它们并不相同。您确实需要确切地找出预期的编码。
Both of those names are available viathose names in Java - at least they are on my JDK installation. (You may find that Windows-1252 isn't available on a Linux installation, for example.)
这两个名称都可以通过Java 中的这些名称获得 - 至少它们在我的 JDK 安装中。（例如，您可能会发现 Windows-1252 在 Linux 安装中不可用。）
