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Re: Euro symbol and other characters distorted
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Re: Euro symbol and other characters distorted


  • Subject: Re: Euro symbol and other characters distorted
  • From: Paul Lynch <email@hidden>
  • Date: Wed, 14 Jun 2006 14:07:56 +0100


On 14 Jun 2006, at 12:57, David Griffith wrote:

Ok I have just written a little routine to load each BLOB in WO and then write that back to a TEXT column instead. What is happening now is that WO is receiving the text but with '?' instead of special characters. When I then write that back to the TEXT column, the '?' is written instead of the original character. So now I end up with all the text with loads of '?' scattered throughout it.

It may help if I point out that, in Unicode, a character with a ? inside of a black diamond is called the "Unicode replacement character", and it sometimes shows up, in some encodings, as a plain ?. This character is supposed to be used when an invalid Unicode character is detected.


Any idea how to avoid that?

Then, if I go to the database using Navicat and I change one of the '?' to a • (bullet in case that did not appear correctly), it saves and displays fine in Navicat but on my web pages it shows: 'â?¢'.

This is the same problem I am having with the euro symbol. Any ideas?

You definitely have an encoding mismatch. Something isn't working the way you think it is. Sorry I can't be more specific; this sort of problem is usually extremely painful to work out. For what it's worth. I have a feeling that it's the encoding somewhere between the database and your application that is wrong.


Paul


Kind regards,
David.

On 13 Jun 2006, at 17:07, David Griffith wrote:

Just let me be sure that I am clear on all of this:

The JDBC adaptor uses a default encoding of UTF-8 so I should not need to specify anything on the connection URL.

I have set the page wrapper of my site to have the content encoding set to UTF8.

I have included the code that someone posted on here to put in Application and Session classes to force UTF8.

I need to convert (somehow) the BLOBs to TEXT fields in mySQL with UTF-8 encoding, which is what I was trying to do but it is truncating them all.

Do I need to specifically convert all columns in the database to UTF8? Or does it matter?

Is there anything else I need to do when working with mySQL 4.1.x apart from using 3.0.x Connector-J?

If not, I am stumped.... I have done all this except of the BLOB to TEXT conversion.

Kind regards,
David.

On 13 Jun 2006, at 17:00, David Griffith wrote:

HI Xavier,

Sorry I see what you mean about the email, I'll start a fresh one in the future to avoid problems..

I'm talking about types in mySQL. I am using mySQL 4.1.19 with connector-j 3.0.17. Having read on the list (and the problem with BLOBs returning hex instead of text) I reverted to using 3.0.17 from 3.1.7. I cannot get any 3.1.x connector-j to work correctly with BLOBs.

I have tried converting the BLOB columns in mySQL to TEXT and MEDIUMTEXT but it truncates so much that it destroys the data. I can't figure any other reasonable way of converting them. If I can convert them to TEXT columns in mySQL successfully, that will be a start. However I am now getting the Euro symbol (which is in a VARCHAR) displaying as rubbish as well where that used to be fine before. I think that has only happened since I added the UTF8 code (application and session) and changed the header in the HTML pages to force UTF8.

It's a real nightmare.. I was actually in the process of trying to convert the whole thing over to FrontBase as I just cannot figure out what to do about this. The problem is the conversion to Frontbase will take a while too with all the referenital integrity stuff so I have to be careful and I don't want to lose any data either.

Kind regards,
David.

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 >Re: Euro symbol and other characters distorted (From: David Griffith <email@hidden>)

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