You can't use JDBC. We provide a datastore for you:

http://code.google.com/appengine/docs/java/datastore/

On Sat, Feb 20, 2010 at 8:30 AM, VTR Ravi Kumar <[email protected]>wrote:

> Hi I am trying to connect a database using jdbc and am getting the
> following error ...
>
> java.lang.NoClassDefFoundError: javax.net.SocketFactory is a
> restricted class. Please see the Google App Engine developer's guide
> for more details.
>        at com.google.appengine.runtime.Request.process-
> eac96632470da697(Request.java)
>        at javax.net.SocketFactory.<clinit>(SocketFactory.java)
>        at java.lang.reflect.Method.invoke(Method.java:43)
>        at
>
> org.apache.commons.httpclient.protocol.ReflectionSocketFactory.createSocket(ReflectionSocketFactory.java:
> 111)
>        at
>
> org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:
> 129)
>        at
> org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:
> 706)
>        at
>
> org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:
> 386)
>        at
>
> org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:
> 170)
>        at
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:
> 396)
>        at
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:
> 324)
>        at
> com.adventnet.zoho.client.report.ReportClient.login(ReportClient.java:
> 87)
>        at
>
> com.zoho.cloudsql.jdbc.ZohoReportsConnection.<init>(ZohoReportsConnection.java:
> 59)
>        at
> com.zoho.cloudsql.jdbc.ZohoReportsDriver.connect(ZohoReportsDriver.java:
> 67)
>        at java.sql.DriverManager.getConnection(Unknown Source)
>        at java.sql.DriverManager.getConnection(Unknown Source)
>        at com.pragati.util.fetchfromCloud.connectCloud(fetchfromCloud.java:
> 52)
>        at com.pragati.util.fetchfromCloud.getPhone(fetchfromCloud.java:72)
>        at
> com.pragati.jjcet.alumni.JjcetalumniServlet.doPost(JjcetalumniServlet.java:
> 47)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>        at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 487)
>        at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1093)
>        at
>
> com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:
> 97)
>        at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1084)
>        at
>
> com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:
> 35)
>        at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1084)
>        at
>
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:
> 43)
>        at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1084)
>        at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
> 360)
>        at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
> 216)
>        at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
> 181)
>        at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
> 712)
>        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> 405)
>        at
>
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:
> 238)
>        at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 139)
>        at org.mortbay.jetty.Server.handle(Server.java:313)
>        at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> 506)
>        at org.mortbay.jetty.HttpConnection
> $RequestHandler.headerComplete(HttpConnection.java:830)
>        at
>
> com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:
> 76)
>        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
>        at
>
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
> 135)
>        at
> com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
> 235)
>        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:5485)
>        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:5483)
>        at
>
> com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:
> 24)
>        at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> 363)
>        at com.google.net.rpc.impl.Server$2.run(Server.java:837)
>        at
> com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:
> 56)
>        at
>
> com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:
> 536)
>        at com.google.net.rpc.impl.Server.startRpc(Server.java:792)
>        at com.google.net.rpc.impl.Server.processRequest(Server.java:367)
>        at
>
> com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:
> 448)
>        at
> com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:
> 319)
>        at
> com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:
> 290)
>        at com.google.net.async.Connection.handleReadEvent(Connection.java:
> 474)
>        at
>
> com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:
> 774)
>        at
> com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:
> 205)
>        at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
> 101)
>        at
> com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:
> 251)
>        at com.google.apphosting.runtime.JavaRuntime
> $RpcRunnable.run(JavaRuntime.java:394)
>        at java.lang.Thread.run(Unknown Source)
>
>
> Will be really glad if someone can help me understand what i did
> wrong...
>
>
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>


-- 
Ikai Lan
Developer Programs Engineer, Google App Engine
http://googleappengine.blogspot.com | http://twitter.com/app_engine

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