Re: [BUGS] BUG #14166: JDBC driver won't parse error message fromDB server in German
От | Davygora, Yuriy |
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Тема | Re: [BUGS] BUG #14166: JDBC driver won't parse error message fromDB server in German |
Дата | |
Msg-id | B204CB55F9D32D41A9A5413EA3F13F8C3BEBFCF2@email.sulzer.de обсуждение исходный текст |
Ответ на | Re: [BUGS] BUG #14166: JDBC driver won't parse error message from DB server in German (Michael Paquier <michael.paquier@gmail.com>) |
Ответы |
Re: Re: [BUGS] BUG #14166: JDBC driver won't parse errormessage from DB server in German
(Dave Cramer <pg@fastcrypt.com>)
|
Список | pgsql-jdbc |
_____________________________________________________________________ Hello Michael, thank you for your feedback. I would like, however, to express a slight doubt in your conclusion, if I may. Apparentlyit is the server that is sending a malformed byte sequence, because, as far as I can see, the method org.postgresql.core.UTF8Encoding.decode(byte[] data, int offset, int length) in the driver does its job just fine: if itgets a correct byte sequence for a UTF-8 string it produces a correct UTF-8 string. So my naive assumption would be thatit is the server which is sending a malformed byte sequence. I might, however be wrong, because I am overlooking something. Best regards, Yuriy _______________________________________________________ Sulzer GmbH Geschaeftsfuehrende Gesellschafter: Dr. Johann Sulzer, Albert Euba, Thomas Kahabka Geschaeftsfuehrer: Angelika Rudolph, Harald Lothspeich Sitz und Registergericht: Stuttgart HRB 7608 http://www.sulzer.de -----Ursprüngliche Nachricht----- Von: Michael Paquier [mailto:michael.paquier@gmail.com] Gesendet: Mittwoch, 1. Juni 2016 02:23 An: Davygora, Yuriy <Yuriy.Davygora@sulzer.de> Cc: PostgreSQL mailing lists <pgsql-jdbc@postgresql.org> Betreff: Re: [BUGS] BUG #14166: JDBC driver won't parse error message from DB server in German On Tue, May 31, 2016 at 11:32 PM, <davygora@sulzer.de> wrote: > The following bug has been logged on the website: > > Bug reference: 14166 > Logged by: Yuriy Davygora > Email address: davygora@sulzer.de > PostgreSQL version: 9.5.3 > Operating system: Windows 7 64 bit > Description: > > Prerequisites (all local, no remote servers): > - PostgreSQL DB 9.5.3 with locale German_Germany.1252 > - PostgreSQL JDBC driver postgresql-9.4.1208.jar (jre8) > - Payara JEE server 4.1.1.161.1 > - Oracle JDK 1.8.0_72 > - Misconfiguration of the JDBC connection in the domain.xml file > causing the DB connection error (see below) > > The JDBC driver provides a property 'DatabaseName' which I set to the > correct database name which is different from the user name. Here is > an excerpt from domain.xml: > > <property name="DatabaseName" value="database_name"></property> > <property name="User" value="user_name"></property> > <property name="PortNumber" value="5432"></property> > <property name="Url" > value="jdbc:postgresql://localhost/"></property> > > -------------------------- > > Bug description: > > The DB connection error was "database does not exist" (which I found > out after switching the locale from German to English). To fix I had > to include the database name in the URL as follows: > > <property name="Url" > value="jdbc:postgresql://localhost/database_name?"></property> > > While the locale of the DB server was still set to German, however, I > did get a different message. Here is an excerpt from the stacktrace: > > Caused by: java.io.IOException: Ungültige UTF-8-Sequenz: das erste > Byte ist > 10xxxxxx: 132 > at org.postgresql.core.UTF8Encoding.decode(UTF8Encoding.java:104) > at org.postgresql.core.PGStream.ReceiveString(PGStream.java:331) > at > org.postgresql.core.v3.ConnectionFactoryImpl.readStartupMessages(ConnectionFactoryImpl.java:705) > at > org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:213) > ... 90 more > ]] > > I downloaded the sources of the JDBC driver to find out where the > error comes from. It turned out, that the exception is thrown when the > JDBC driver cannot parse the error message from the DB server. Thus, I > don't ever get to see the original error message. > > As mentioned above, setting the locale to English allowed me to see > the error and fix it quickly. However, it would be nice, if the error > messages could be parsed in any language. > > -------------------------- > > P.S. This has nothing to do with the reported bug, however it might be > a bug in its own right. While the configuration was still as shown in > the prerequisites section, occasionally the JDBC connection would > work, about 30% of the time, on a seemingly random basis. This does not seem related to Postgres itself, but to the JDBC driver, so I switched the report to pgsql-jdbc. -- Michael
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