Google App Engine: java.lang.RuntimeException: java.io.NotSerializableException

By -

java.lang.RuntimeException: java.io.NotSerializableException: com.example.web.dto.SessionObjectDTO
at com.google.apphosting.runtime.jetty.SessionManager.serialize(SessionManager.java:373)
at com.google.apphosting.runtime.jetty.DatastoreSessionStore.createEntityForSession(DatastoreSessionStore.java:71)
at com.google.apphosting.runtime.jetty.DatastoreSessionStore.saveSession(DatastoreSessionStore.java:93)
at com.google.apphosting.runtime.jetty.SessionManager$AppEngineSession.save(SessionManager.java:164)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:41)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:249)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:135)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:447)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:452)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:458)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:698)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:336)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:328)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:456)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
at java.lang.Thread.run(Thread.java:679)
Caused by: java.io.NotSerializableException: com.example.web.dto.SessionObjectDTO
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1180)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at java.util.HashMap.writeObject(HashMap.java:1018)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:962)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at com.google.apphosting.runtime.jetty.SessionManager.serialize(SessionManager.java:370)
... 29 more
-----------------------------------------------------------------------------------------------------

Solution: Please make your object Serializable that you want to put in HttpSession if you are running it on Google App Engine.

Comments

Post a Comment

Popular posts from this blog

Read Images from a xlsx file using Apache POI

By -
This article is all about how to read and download images inside a file in xlsx format. We will use Apache POI using java. 1. Maven dependencies commons-logging-1.2.jar  commons-collections4-4.1.jar openxml4j-1.0-betapoi-3.16.jar poi-ooxml-3.16.jar poi-ooxml-schemas-3.16.jar xmlbeans-2.6.0.jar servlet-api 2. Sharing java code import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import org.apache.poi.ss.usermodel.PictureData; import org.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFDrawing; import org.apache.poi.xssf.usermodel.XSSFPicture; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFShape; import org.apache.poi.xssf.usermodel.XSSFSheet; import
Read more

Struts 2 : Warning :No configuration found for the specified action: 'Login.action' in namespace: '/'

By -
No configuration found for the specified action: 'Login.action' in namespace: '/'''. Form action defaulting to 'action' attribute's literal value. Solution: To remove this warning you need to change following... See your struts.xml file what name you have specified... If you are using namespace / and your action name is 'Login' then  replace Login.action to Login as given below... <s:form action=" Login.action " method="post" >   Use below with namespace  1) <s:form action=" Login " method="post" namespace="/">   Or   2) <s:form action=" /Login " method="post" >   Now you will not get this warning.
Read more

How to create mail message in FRC822 format

By -
Here is the RFC822 message sample format...which is accepted by archive mail server. --------------------------------------------------------------------------------------- Date: Fri, 23 Sep 2011 11:33:37 +0530 (GMT+05:30) From:sender@gmail.com To:  archive@.............archive.psmtp.com Cc:  archive@.............archive.psmtp.com Message-ID: <18916478.4.1316757817734.JavaMail.user@NIC-TestUser> Subject: Test E-Mail through Java MIME-Version: 1.0 Content-Type: multipart/mixed;     boundary="----=_Part_3_16554308.1316757817718" ------=_Part_3_16554308.1316757817718 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit This is part one of a test multipart e-mail.The second part is file as an attachment ------=_Part_3_16554308.1316757817718 Content-Type: text/plain; charset=us-ascii; name=testfile.txt Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=testfile.txt Hi, This is a test file. ------=_Part_3_16554308.1316757817718-
Read more