Basically, no. You can't do what you want to do. You can't connect to your database from App Engine. That has nothing to do with GWT.
On Thu, Sep 10, 2009 at 3:21 AM, Romeo Sanchez <romeo.sanc...@gmail.com> wrote: > My problem is exactly the same as the one described at: > http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/244850e9cde1c733/da5c6bfeb61c8109?show_docid=da5c6bfeb61c8109 > > Basically, I get the following exception when trying to establish a > connection to a Postgresql Database from a GWT project using app engine. > > org.postgresql.util.PSQLException: Your security policy has prevented the > connection from being attempted. You probably need to grant the connect > java.net.SocketPermission to the database server host and port that you wish > to connect to. > at org.postgresql.Driver.connect(Driver.java:282) > at java.sql.DriverManager.getConnection(DriverManager.java:582) > at java.sql.DriverManager.getConnection(DriverManager.java:154) > ........ > ....... > Caused by: java.security.AccessControlException: access denied > (java.net.SocketPermission myhost.com resolve) > > Users in the google group thread suggest to uncheck the App Engine feature > of the project. It seems this simple action fixes the problem. > Unfortunately, my project requires the App Engine feature. I have verified > the configuration files of the database server, and everything seems to be > fine. I made a simpler project (which does not use GWT) to test the > connection to the DB server and to query the database, and it works well. > However, the same code does not work when it is invoked inside the server > side of my GWT/APP engine application. > > Is this a known bug of GWT? is App Engine conflicting with the DB Driver? I > am using the latest DB driver for Postgresql. > > If I split my project and I create a GWT module that connects to the DB > server (and does not use App Engine), and then inherit this module into the > main project (the one using App Engine), would that solve my problem? If so, > is there any other solution instead of doing this?? > > Thanks, I really appreciate any help from you guys. I am new on GWT/App > Engine, and I really did not expect that connecting to Postgresql databases > would be a problem. > > RSN > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
