-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/05/10 22:11, undertow wrote: > hello, i seem to be having issued with GWT and character encoding. I > have an Oracle database which stores strings with iso-8859-1 > encoding. GWT does NOT support java's String.getBytes(), nor does it > support new String(byte[], encoding). > > the question is, how do i get the string bytes from the database blob > to the properly encoded string?
You need to convert the data from ISO-8859-1 to UTF-16 at the point where your app touches Oracle --- that is, on the server. GWT supports standard Java strings, which are UTF-16 (i.e. arrays of 16-bit Character values --- note that this is *not* Unicode!), but as you've found it does support transcoding. Character conversion ideally only happens when you do I/O on the string, via a Reader or a Writer, and as all I/O on GWT is supposed to either happen on the server or else use native Unicode they haven't implemented it. I have on occasion managed to force non-UTF-16 data into a string, but strictly only as a hack, and it always causes problems. If Oracle's API is giving you such a string, then They Are Doing It Wrong... [As an aside: I have managed to port huge chunks of java.io and java.nio to run on GWT client-side, and I've also got the basic framework of java.nio.charset, so it *is* possible to do character encoding translation on the client... but I haven't found any sensibly small encoding codecs yet, so I'm having to write my own slow buggy ones --- so you probably don't want this approach.] - -- ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ───── http://www.cowlark.com ───── │ │ life←{ ↑1 ⍵∨.^3 4=+/,¯1 0 1∘.⊖¯1 0 1∘.⌽⊂⍵ } │ --- Conway's Game Of Life, in one line of APL -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkvhnDMACgkQf9E0noFvlzgkfwCfSgDz12nZN2AOLtiZw6qMh8Xz yloAoIznv+9JGBozm20a3HDU56+IcL7D =M+yG -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
