Hi all,
i'm trying to use google app engine to build my first apps using java.
i'm new to java but i would like to use app engine to train myself for
web app developing.
i've got some issues using the users services.
these are my servlets:
/*
* TestingUsers.java
*/
package mytrainingapp;
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;
public class TestingUsers extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
UserService userService = UserServiceFactory.getUserService();
String newline = System.getProperty("line.separator");
String data = req.getParameter("date");
String nick = req.getUserPrincipal().getName();
resp.setContentType("text/plain");
resp.getWriter().println("I parametri da te inviati sono:" +
newline
+ " data: " + data + newline + " nick: " + nick);
}
}
/*
* CatchParameter.java
*/
package mytrainingapp;
import java.io.IOException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class CatchParameter extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
String newline = System.getProperty("line.separator");
String data = req.getParameter("date");
resp.setContentType("text/plain");
resp.getWriter().println("I parametri da te inviati sono:" +
newline
+ " data: " + data);
}
}
/*
* CalendarServlet.java
*/
package mytrainingapp;
import java.io.IOException;
import javax.servlet.http.*;
import java.util.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
public class CalendarServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
String newline = System.getProperty("line.separator");
resp.setContentType("text/calendar");
String startVCard = "BEGIN:VCALENDAR" + newline + "VERSION:2.0"
+
newline + "CALSCALE:GREGORIAN" + newline + "METHOD:PUBLISH" + newline
+ "X-WR-CALNAME:Time Tracker" + newline + "X-WR-TIMEZONE:UTC" +
newline + "X-WR-CALDESC:Time tracking utility - Vidiemme.it" +
newline;
String endVCard = "END:VCALENDAR";
String events = "";
for(int i = 1; i <= 31; i++){
String day;
if(i < 10){
day = "0" + i;
} else {
day = "" + i;
}
String dayAfter;
int z;
if(i < 9){
z = i + 1;
dayAfter = "0" + z;
}else{
z = i + 1;
dayAfter = "" + z;
}
events = events + "BEGIN:VEVENT" + newline +
"DTSTART;VALUE=DATE:201001" + day + newline +
"DTEND;VALUE=DATE:201001" + dayAfter + newline +
"SUMMARY:Time Tracking giorno 201001" + day + newline +
"ATTENDEE;CUTYPE=INDIVIDUAL;ROLE=REQ-
PARTICIPANT;PARTSTAT=ACCEPTED;CN=Time tracking utility - Vidiemme.it;X-
NUM-GUEST=0" + newline +
"X-GOOGLE-CALENDAR-CONTENT-ICON:http://vidiemmeit.appspot.com/
favicon.ico" + newline +
"X-GOOGLE-CALENDAR-CONTENT-URL:http://vidiemmeit.appspot.com/
catchparameter?date=" + "201002" + day + newline +
"X-GOOGLE-CALENDAR-CONTENT-TYPE:text/html" + newline +
"X-GOOGLE-CALENDAR-CONTENT-WIDTH:330" + newline +
"X-GOOGLE-CALENDAR-CONTENT-HEIGHT:100" + newline +
"CLASS:PUBLIC" + newline +
"CREATED:20100101T000000Z" + newline +
"LAST-MODIFIED:20100101T000000Z" + newline +
"RRULE:FREQ=YEARLY" + newline +
"SEQUENCE:1" + newline +
"STATUS:CONFIRMED" + newline +
"END:VEVENT" + newline;
}
resp.getWriter().println(startVCard + events + endVCard);
}
}
/*
* web.xml
*/
<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="http://java.sun.com/xml/ns/javaee"; version="2.5">
<servlet>
<servlet-name>calendar</servlet-name>
<servlet-class>mytrainingapp.CalendarServlet</servlet-class>
</servlet>
<servlet>
<servlet-name>catchparameter</servlet-name>
<servlet-class>mytrainingapp.CatchParameter</servlet-class>
</servlet>
<servlet>
<servlet-name>testingusers</servlet-name>
<servlet-class>mytrainingapp.TestingUsers</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>calendar</servlet-name>
<url-pattern>/calendar</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>catchparameter</servlet-name>
<url-pattern>/catchparameter</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>testingusers</servlet-name>
<url-pattern>/testingusers</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="http://java.sun.com/xml/ns/javaee"; version="2.5">
<servlet>
<servlet-name>calendar</servlet-name>
<servlet-class>vidiemmeit.CalendarServlet</servlet-class>
</servlet>
<servlet>
<servlet-name>catchparameter</servlet-name>
<servlet-class>vidiemmeit.CatchParameter</servlet-class>
</servlet>
<servlet>
<servlet-name>testingusers</servlet-name>
<servlet-class>vidiemmeit.TestingUsers</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>calendar</servlet-name>
<url-pattern>/calendar</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>catchparameter</servlet-name>
<url-pattern>/catchparameter</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>testingusers</servlet-name>
<url-pattern>/testingusers</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
And this is the stacktrace i receive requesting any page:
01-22 04:55AM 35.504 /testingusers 500 159ms 194cpu_ms 0kb Mozilla/5.0
(Macintosh; U; Intel Mac OS X 10_6_2; en-US) AppleWebKit/532.5 (KHTML,
like Gecko) Chrome/4.0.249.49 Safari/532.5,gzip(gfe)
93.62.0.133 - - [22/Jan/2010:04:55:35 -0800] "GET /testingusers HTTP/
1.1" 500 0 - "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_2; en-US)
AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.0.249.49 Safari/
532.5,gzip(gfe)" "mytrainingapp.appspot.com"
W 01-22 04:55AM 35.648
EXCEPTION
java.lang.ClassNotFoundException: mytrainingapp.TestingUsers
at com.google.appengine.runtime.Request.process-8622395adffc5319
(Request.java)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.mortbay.util.Loader.loadClass(Loader.java:91)
at org.mortbay.util.Loader.loadClass(Loader.java:71)
at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:
233)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at org.mortbay.jetty.servlet.ServletHandler.initialize
(ServletHandler.java:612)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:139)
at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1218)
at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:500)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
448)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:191)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:168)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
(JettyServletEngineAdapter.java:123)
at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5233)
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$2.run(Server.java:838)
at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:536)
at com.google.net.rpc.impl.Server.startRpc(Server.java:793)
at com.google.net.rpc.impl.Server.processRequest(Server.java:368)
at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:448)
at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
466)
at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:759)
at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:205)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:251)
at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:394)
at java.lang.Thread.run(Unknown Source)
W 01-22 04:55AM 35.649
failed testingusers
javax.servlet.UnavailableException: mytrainingapp.TestingUsers
at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:79)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:
233)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at org.mortbay.jetty.servlet.ServletHandler.initialize
(ServletHandler.java:612)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:139)
at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1218)
at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:500)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
448)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:191)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:168)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
(JettyServletEngineAdapter.java:123)
at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5233)
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$2.run(Server.java:838)
at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:536)
at com.google.net.rpc.impl.Server.startRpc(Server.java:793)
at com.google.net.rpc.impl.Server.processRequest(Server.java:368)
at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:448)
at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
466)
at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:759)
at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:205)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:251)
at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:394)
at java.lang.Thread.run(Unknown Source)
W 01-22 04:55AM 35.650
Failed startup of context
com.google.apphosting.utils.jetty.runtimeappenginewebappcont...@1603522
{/,/base/data/home/apps/mytrainingapp/1.339346529244527288}
javax.servlet.UnavailableException: mytrainingapp.TestingUsers
at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:79)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:
233)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at org.mortbay.jetty.servlet.ServletHandler.initialize
(ServletHandler.java:612)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:139)
at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1218)
at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:500)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
448)
at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:191)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:168)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
(JettyServletEngineAdapter.java:123)
at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5233)
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$2.run(Server.java:838)
at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:536)
at com.google.net.rpc.impl.Server.startRpc(Server.java:793)
at com.google.net.rpc.impl.Server.processRequest(Server.java:368)
at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:448)
at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
466)
at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:759)
at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:205)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:251)
at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:394)
at java.lang.Thread.run(Unknown Source)
C 01-22 04:55AM 35.656
Uncaught exception from servlet
javax.servlet.UnavailableException: Initialization failed.
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:200)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:168)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
(JettyServletEngineAdapter.java:123)
at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5233)
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$2.run(Server.java:838)
at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:536)
at com.google.net.rpc.impl.Server.startRpc(Server.java:793)
at com.google.net.rpc.impl.Server.processRequest(Server.java:368)
at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:448)
at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
466)
at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:759)
at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:205)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:251)
at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:394)
at java.lang.Thread.run(Unknown Source)
any help would be very appreciated!!
thanks in advance,
valerio
--
You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to google-appengine-j...@googlegroups.com.
To unsubscribe from this group, send email to
google-appengine-java+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-appengine-java?hl=en.
