问题描述
有人知道如何将一个字符串从ISO-8859-1转换为UTF-8并返回Java？
Does anyone know how to convert a string from ISO-8859-1 to UTF-8 and back in Java?
我从网上得到一个字符串并将其保存在RMS（J2ME）中，但是我想保留特殊字符，并从RMS获取字符串，但使用ISO-8859-1编码。如何做到这一点？
I'm getting a string from the web and saving it in the RMS (J2ME), but I want to preserve the special chars and get the string from the RMS but with the ISO-8859-1 encoding. How do I do this?
推荐答案
一般来说，你不能这样做。 UTF-8能够编码任何Unicode代码点。 ISO-8859-1只能处理其中的一小部分。因此，从ISO-8859-1到UTF-8的转码没有问题。从UTF-8向后退到ISO-8859-1将导致替换字符（&＃xFFFD;）出现在不支持的字符时出现在文本中。
In general, you can't do this. UTF-8 is capable of encoding any Unicode code point. ISO-8859-1 can handle only a tiny fraction of them. So, transcoding from ISO-8859-1 to UTF-8 is no problem. Going backwards from UTF-8 to ISO-8859-1 will cause "replacement characters" (�) to appear in your text when unsupported characters are found.
要转码文本：
byte[] latin1 = ...
byte[] utf8 = new String(latin1, "ISO-8859-1").getBytes("UTF-8");
或
byte[] utf8 = ...
byte[] latin1 = new String(utf8, "UTF-8").getBytes("ISO-8859-1");
您可以使用较低级别的蜜蜂。例如，当发现不可编码的字符时，您可以引发异常，或者对替换文本使用不同的字符。
You can exercise more control by using the lower-level Charset APIs. For example, you can raise an exception when an un-encodable character is found, or use a different character for replacement text.
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