Comments (2)
In the "Impl" class the method create of the GWT class is used and this redirects with a step in between to the GWTBridge of the shared package. Are you sure your dependencies are correct?
I'm using slf4gwt with 2.10 since it came out without seeing this issue.
from slf4gwt.
The dependencies I have are, or at least those which matter
<properties>
<maven.compiler.release>11</maven.compiler.release>
<appengine.version>2.0.8</appengine.version>
<jetty.version>9.4.48.v20220622</jetty.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>libraries-bom</artifactId>
<version>26.1.2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.gwtproject</groupId>
<artifactId>gwt</artifactId>
<version>2.10.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.slf4gwt</groupId>
<artifactId>slf4gwt</artifactId>
<version>1.4</version>
</dependency>
<!-- GWT -->
<dependency>
<groupId>org.gwtproject</groupId>
<artifactId>gwt-user</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.gwtproject</groupId>
<artifactId>gwt-servlet</artifactId>
<scope>runtime</scope>
</dependency>
<!-- GAE -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>${appengine.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-logging-logback</artifactId>
</dependency>
</dependencies>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>2.10.0</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
<configuration>
<sourceLevel>${maven.compiler.source}</sourceLevel>
<style>OBF</style>
</configuration>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>2.4.4</version>
<configuration>
<cloudSdkVersion>402.0.0</cloudSdkVersion>
<port>8888</port>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>${jetty.version}</version>
</plugin>
</plugins>
So the server is using the org.slf4j.LoggerFactory
class inside slf4gwt
not the one in slf4j-api
is this expected ?
Does gwt
in org.gwtproject
makes any difference compared to com.google
gwt
?
Running the app using appengine or jetty gives the same result
Full stack trace below
java.lang.NoClassDefFoundError: com/google/gwt/core/client/GWTBridge
at org.slf4gwt.logging.impl.Impl.<clinit>(Impl.java:30)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:58)
at org.app.util.server.TLogger.<init>(TLogger.java:73)
at org.app.init.server.InitServer.<clinit>(InitServer.java:81)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.eclipse.jetty.server.handler.ContextHandler$StaticContext.createInstance(ContextHandler.java:2902)
at org.eclipse.jetty.servlet.ServletContextHandler$Context.createInstance(ServletContextHandler.java:1299)
at org.eclipse.jetty.server.handler.ContextHandler$StaticContext.createListener(ContextHandler.java:2913)
at org.eclipse.jetty.servlet.ListenerHolder.doStart(ListenerHolder.java:94)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:369)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1449)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1414)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:916)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:288)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.server.Server.start(Server.java:423)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at org.eclipse.jetty.server.Server.doStart(Server.java:387)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at com.google.appengine.tools.development.jetty9.JettyContainerService.startContainer(JettyContainerService.java:366)
at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:293)
at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:42)
at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:102)
at com.google.appengine.tools.development.Modules.startup(Modules.java:118)
at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:284)
at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:57)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:233)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:231)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:231)
at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:405)
at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:58)
at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:258)
at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:249)
Caused by:
java.lang.ClassNotFoundException: com.google.gwt.core.client.GWTBridge
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:476)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:222)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at org.slf4gwt.logging.impl.Impl.<clinit>(Impl.java:30)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:58)
at org.app.util.server.TLogger.<init>(TLogger.java:73)
at org.app.init.server.InitServer.<clinit>(InitServer.java:81)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.eclipse.jetty.server.handler.ContextHandler$StaticContext.createInstance(ContextHandler.java:2902)
at org.eclipse.jetty.servlet.ServletContextHandler$Context.createInstance(ServletContextHandler.java:1299)
at org.eclipse.jetty.server.handler.ContextHandler$StaticContext.createListener(ContextHandler.java:2913)
at org.eclipse.jetty.servlet.ListenerHolder.doStart(ListenerHolder.java:94)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:369)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1449)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1414)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:916)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:288)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169)
at org.eclipse.jetty.server.Server.start(Server.java:423)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:97)
at org.eclipse.jetty.server.Server.doStart(Server.java:387)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at com.google.appengine.tools.development.jetty9.JettyContainerService.startContainer(JettyContainerService.java:366)
at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:293)
at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:42)
at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:102)
at com.google.appengine.tools.development.Modules.startup(Modules.java:118)
at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:284)
at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:57)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:233)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:231)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:231)
at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:405)
at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:58)
at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:258)
at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:249)
from slf4gwt.
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