Re: module java.base does not "opens java.lang" to unnamed module

This is with gwt 2.11.0 

On app engine there's no obvious problem.

With local jetty the onFailure method is never reached so the message is not displayed.

console output:

[WARNING] Exception while dispatching incoming RPC call

java.lang.reflect.InaccessibleObjectException: Unable to make field private java.lang.String java.lang.Throwable.detailMessage accessible: module java.base does not "opens java.lang" to unnamed module @5e4b956

at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)

at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)

at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)

at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeClass(ServerSerializationStreamWriter.java:781)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:826)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeClass(ServerSerializationStreamWriter.java:799)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:826)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeClass(ServerSerializationStreamWriter.java:799)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:826)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeClass(ServerSerializationStreamWriter.java:799)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:826)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:698)

at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:130)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$ValueWriter$8.write(ServerSerializationStreamWriter.java:167)

at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue(ServerSerializationStreamWriter.java:606)

at com.google.gwt.user.server.rpc.jakarta.RPC.encodeResponse(RPC.java:645)

at com.google.gwt.user.server.rpc.jakarta.RPC.encodeResponseForFailure(RPC.java:420)

at com.google.gwt.user.server.rpc.jakarta.RPC.invokeAndEncodeResponse(RPC.java:606)

at com.google.gwt.user.server.rpc.jakarta.RemoteServiceServlet.processCall(RemoteServiceServlet.java:350)

at com.google.gwt.user.server.rpc.jakarta.RemoteServiceServlet.processCall(RemoteServiceServlet.java:320)

at com.google.gwt.user.server.rpc.jakarta.RemoteServiceServlet.processPost(RemoteServiceServlet.java:390)

at com.google.gwt.user.server.rpc.jakarta.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:63)

at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:520)

at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:587)

at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1419)

at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)

at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665)

at com.historytrees.MyJakartaFilter.doFilter(MyJakartaFilter.java:37)

at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:210)

at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)

at org.eclipse.jetty.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:170)

at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)

at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1635)

at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)

at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:598)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)

at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1580)

at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)

at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1381)

at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)

at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)

at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1553)

at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)

at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1303)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)

at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:149)

at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

at org.eclipse.jetty.server.Server.handle(Server.java:563)

at org.eclipse.jetty.server.HttpChannel$RequestDispatchable.dispatch(HttpChannel.java:1598)

at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:753)

at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:501)

at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:287)

at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)

at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)

at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)

at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)

at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)

at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)

at java.base/java.lang.Thread.run(Thread.java:842)

On Friday 21 June 2024 at 16:20:29 BST, Colin Alworth <colin@colinalworth.com> wrote:

Can you share a little more detail, like the full error message with stack trace, and the GWT version you're using? Some improvements were made in this area for GWT 2.11, and some messages of this kind are merely warnings, indicating that reflection was attempted and some fallback can usually be used instead.

On Friday, June 21, 2024 at 8:45:59 AM UTC-5 tim_mac...@yahoo.co.uk wrote:

SInce upgrading to Java 11,  throwing a new IllegalArgumentException in an RPC server-side implementation gives  InaccessibleObjectException. It can be stopped by using a VM argument --add-opens, but apparently this is not recommended.
Can anyone  clarify ?

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