Hi, thanks for your reply. But I really have no choice in this matter. Using JDBC is my best bet here, and I would appreciate if somebody could tell me what's going on.
On Apr 23, 2:56 pm, Charlie Collins <[EMAIL PROTECTED]> wrote: > I don't have any insight to help in terms of answering your question > about using a JDBC driver from Android, but would offer one > suggestion: don't try it to begin with. > > You would probably be a lot better off connecting to a server using > XML over HTTP (RESTy) or such, and then doing your JDBC stuff on the > *server*. Write your own RESTy DAL API on the server side, and connect > to that from Android - a lot more performant (and easier to maintain > going forward, decoupling), and you can control all the data aspects > on the server using any library or technology you want. > > Going directly from the Android client to adatabaseserver over JDBC > is going to be problematic, and even if you do get it to work, a lot > more overhead than using a server. Remember it's a small embedded > device. > > On Apr 23, 3:38 am, scimitar <[EMAIL PROTECTED]> wrote: > > > Hi, > > > I'm trying to connect to an external mysqldatabase. The code is > > something like: > > > try > > > > { > > > Class.forName(DBCLASS).newInstance(); > > > } > > > catch (Exception e) > > > { > > > Log.i("DataLayer", "unable to load jdbc driver"); > > > } > > > // Connect to thedatabase > > > // > > > jdbc:mysql://[hostname][,failoverhost...][:port]/[dbname][?param1=value1][¶m2=value2]..... > > > > try > > > { > > > connection = DriverManager.getConnection( > > > DBCONNSTRING + DBHOST + "/" + DBNAME + "?user=" + USER + > > > "&password=" + PASSWORD); > > > > } > > > catch (Exception e) > > > { > > > > } > > > Basically the 'DriverManager.getConnection()' call fails. The error > > messages are: > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass 'java.sql.NClob' 0x40069968 threw > > > an exception > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass > > > 'com.mysql.jdbc.LocalizedErrorMessages_en_US' 0x40069968 threw an > > > exception > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass > > > 'com.mysql.jdbc.LocalizedErrorMessages_en' 0x40069968 threw an exception > > > I/dalvikvm-heap( 596): GC! (75 sec since last GC) > > > I/dalvikvm-heap( 596): GC old usage 90.6%; now 0.985MB used / 1.971MB > > > soft max (2.062MB real max) > > > I/dalvikvm-heap( 596): GC freed 1736 objects / 106824 bytes in 56ms > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass > > > 'com.mysql.jdbc.LocalizedErrorMessages' 0x40069968 threw an exception > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass > > > 'com.mysql.jdbc.LocalizedErrorMessages_en_US' 0x40018950 threw an > > > exception > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass > > > 'com.mysql.jdbc.LocalizedErrorMessages_en' 0x40018950 threw an exception > > > D/dalvikvm( 596): Exception Ljava/lang/ClassNotFoundException; from > > > PathClassLoader.java:205 not caught locally > > > D/dalvikvm( 596): NOTE: loadClass > > > 'com.mysql.jdbc.LocalizedErrorMessages' 0x40018950 threw an exception > > > D/dalvikvm( 596): Exception Ljava/lang/RuntimeException; from > > > Messages.java:68 not caught locally > > > W/dalvikvm( 596): Exception Ljava/lang/RuntimeException; thrown > > > during Lcom/mysql/jdbc/Messages;.<clinit> > > > D/dalvikvm( 596): Exception Ljava/lang/ExceptionInInitializerError; > > > from Util.java:350 not caught locally > > > W/dalvikvm( 596): Exception Ljava/lang/ExceptionInInitializerError; > > > thrown during Lcom/mysql/jdbc/Util;.<clinit> > > > D/dalvikvm( 596): Exception Ljava/lang/ExceptionInInitializerError; > > > from ViewRoot.java:964 not caught locally > > > D/dalvikvm( 596): Exception Ljava/lang/ExceptionInInitializerError; > > > from ZygoteInit.java:1555 not caught locally > > > I would really appreciate if somebody could help me. > > > thanks. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] Announcing the new M5 SDK! http://android-developers.blogspot.com/2008/02/android-sdk-m5-rc14-now-available.html For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---