问题
Possible Duplicate:
unicode escapes in objective-c
I have a LATIN1 string.
Artîsté
When I json_encode it, it escapes some chars and converts it to single byte UTF8.
Art\u00eest\u00e9
If I just json_decode it, I believe it is decoding in UTF8
Artîsté
In order to get my original string back, I have to call utf8_decode
Artîsté
Is there a way to handle this conversion in objective-c?
回答1:
You might be looking for this:
NSString *string = (some string with non-ASCII characters in it);
char const *string_as_latin1 = [string cStringUsingEncoding:NSISOLatin1StringEncoding];
or possibly this:
NSData *data_latin1 = [string dataUsingEncoding:NSISOLatin1StringEncoding allowLossyConversion:YES];
回答2:
I have a LATIN1 string.
I don't think you do. Assuming you are talking about PHP, json_encode() only accepts UTF-8 strings, and bails out if it hits a non-UTF-8 high-byte sequence:
json_encode("Art\xeest\xe9")
"Art"
json_encode("Art\xc3\xaest\xc3\xa9")
"Art\u00eest\u00e9"
I think you had a proper UTF-8 string to start with, then you encoded and decoded it to get the exact same UTF-8 string back. But then you're displaying it or processing it in another step you haven't shown us, that treats your string as if it were Latin-1.
来源：https://stackoverflow.com/questions/7896221/utf8-decode-for-objective-c