Hello,
I try to set up a small GWT application which should do a simple SQL query
to Postgres SQL 9.2. Tests are based on
GWT demo GreetingService. Server side greeting service has now following
constructor:
public GreetingServiceImpl() {
System.out.println("Konstruktor");
try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException e) {
System.out.println("Where is your PostgreSQL JDBC Driver? "
+ "Include in your library path!");
e.printStackTrace();
return;
}
try {
connection =
DriverManager.getConnection("jdbc:postgresql://192.168.42.42:5432/eclipse","eclipse",
"***");
} catch (SQLException e) {
e.printStackTrace();
System.out.println("Verbindung zur Datenbank ist
fehlgeschlagen");
}
}
This ends up with following exception:
INFO: Dev App Server is now running
Konstruktor
org.postgresql.util.PSQLException: Der Verbindungsversuch schlug fehl.
at
org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:225)
at
org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:64)
at
org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:136)
at
org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:29)
at
org.postgresql.jdbc3g.AbstractJdbc3gConnection.<init>(AbstractJdbc3gConnection.java:21)
at
org.postgresql.jdbc4.AbstractJdbc4Connection.<init>(AbstractJdbc4Connection.java:31)
at org.postgresql.jdbc4.Jdbc4Connection.<init>(Jdbc4Connection.java:24)
at org.postgresql.Driver.makeConnection(Driver.java:393)
at org.postgresql.Driver.connect(Driver.java:267)
at java.sql.DriverManager.getConnection(DriverManager.java:579)
at java.sql.DriverManager.getConnection(DriverManager.java:221)
at li.ip6.server.GreetingServiceImpl.<init>(GreetingServiceImpl.java:37)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at java.lang.Class.newInstance0(Class.java:374)
at java.lang.Class.newInstance(Class.java:327)
at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
at
org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:428)
at
org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at
com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.DevAppServerServersFilter.doDirectRequest(DevAppServerServersFilter.java:369)
at
com.google.appengine.tools.development.DevAppServerServersFilter.doDirectServerRequest(DevAppServerServersFilter.java:352)
at
com.google.appengine.tools.development.DevAppServerServersFilter.doFilter(DevAppServerServersFilter.java:115)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at
com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at
com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:421)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
*Caused by: java.net.SocketException: Operation failure: setSocketOptions:
Not yet implemented*
at
com.google.appengine.api.socket.SocketApiHelper.translateError(SocketApiHelper.java:92)
at
com.google.appengine.api.socket.SocketApiHelper.translateError(SocketApiHelper.java:105)
at
com.google.appengine.api.socket.SocketApiHelper.makeSyncCall(SocketApiHelper.java:71)
at
com.google.appengine.api.socket.AppEngineSocketImpl.setSocketOptionAsBytes(AppEngineSocketImpl.java:213)
at
com.google.appengine.api.socket.AppEngineSocketOptions$BooleanCheckFunction.apply(AppEngineSocketOptions.java:161)
at
com.google.appengine.api.socket.AppEngineSocketOptions$Option.validateAndApply(AppEngineSocketOptions.java:341)
at
com.google.appengine.api.socket.AppEngineSocketOptions$Option.validateAndApply(AppEngineSocketOptions.java:356)
at
com.google.appengine.api.socket.AppEngineSocketImpl.setOption(AppEngineSocketImpl.java:133)
at
com.google.appengine.api.socket.AppEngineSocketImpl.setOption(AppEngineSocketImpl.java:157)
at java.net.Socket.setTcpNoDelay(Socket.java:940)
at org.postgresql.core.PGStream.changeSocket(PGStream.java:103)
at org.postgresql.core.PGStream.<init>(PGStream.java:61)
at
org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:101)
... 55 more
Verbindung zur Datenbank ist fehlgeschlagen
Obviously Postgres driver tries something which GWT does not like:
*Caused by: java.net.SocketException: Operation failure: setSocketOptions:
Not yet implemented**
*A simple test program w/o GWT works.
Any hints?
Christian
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