On Tuesday, January 16, 2018 at 10:47:51 AM UTC+1, Jörg Pfründer wrote:
Dear GWT-Team,
thank you that you have done a great job in the past. We have a large codebase strongly relying on GWT. However the last release has caused big pain to me:
I have tried to update from version 2.7 to 2.8.2 to get rid of my dirty bugfix hacks for chrome 61 positioning.
But I was not able to upgrade my codebase due to very many problems with dependencies in the current gwt 2.8.2 release.
BTW: I use maven to build our project:
1) gwt-dev has dependencies to different jetty versions and as far as I know, I need gwt-dev for the development mode:
Dependency convergence error for org.eclipse.jetty:jetty-io:9.2.13.v20150730 paths to dependency are:
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-net.sourceforge.htmlunit:htmlunit:2.19
+-org.eclipse.jetty.websocket:websocket-client:9.2.13. v20150730
+-org.eclipse.jetty:jetty-io:9.2.13.v20150730
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-net.sourceforge.htmlunit:htmlunit:2.19
+-org.eclipse.jetty.websocket:websocket-client:9.2.13. v20150730
+-org.eclipse.jetty.websocket:websocket-common:9.2.13. v20150730
+-org.eclipse.jetty:jetty-io:9.2.13.v20150730
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-org.eclipse.jetty:jetty-webapp:9.2.14.v20151106
+-org.eclipse.jetty:jetty-servlet:9.2.14.v20151106
+-org.eclipse.jetty:jetty-security:9.2.14.v20151106
+-org.eclipse.jetty:jetty-server:9.2.14.v20151106
+-org.eclipse.jetty:jetty-io:9.2.14.v20151106
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-org.eclipse.jetty:jetty-servlets:9.2.14.v20151106
+-org.eclipse.jetty:jetty-io:9.2.14.v20151106
Dependency convergence error for org.eclipse.jetty:jetty-util:9.2.13.v20150730 paths to dependency are:
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-net.sourceforge.htmlunit:htmlunit:2.19
+-org.eclipse.jetty.websocket:websocket-client:9.2.13. v20150730
+-org.eclipse.jetty:jetty-util:9.2.13.v20150730
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-net.sourceforge.htmlunit:htmlunit:2.19
+-org.eclipse.jetty.websocket:websocket-client:9.2.13. v20150730
+-org.eclipse.jetty.websocket:websocket-common:9.2.13. v20150730
+-org.eclipse.jetty:jetty-util:9.2.13.v20150730
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-org.eclipse.jetty:jetty-webapp:9.2.14.v20151106
+-org.eclipse.jetty:jetty-xml:9.2.14.v20151106
+-org.eclipse.jetty:jetty-util:9.2.14.v20151106
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-org.eclipse.jetty:jetty-servlets:9.2.14.v20151106
+-org.eclipse.jetty:jetty-http:9.2.14.v20151106
+-org.eclipse.jetty:jetty-util:9.2.14.v20151106
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-org.eclipse.jetty:jetty-servlets:9.2.14.v20151106
+-org.eclipse.jetty:jetty-util:9.2.14.v20151106
and
+-myproject
+-com.google.gwt:gwt-dev:2.8.2
+-org.eclipse.jetty:jetty-annotations:9.2.14.v20151106
+-org.eclipse.jetty:jetty-plus:9.2.14.v20151106
+-org.eclipse.jetty:jetty-jndi:9.2.14.v20151106
+-org.eclipse.jetty:jetty-util:9.2.14.v20151106
We do not allow dependencies to different versions of the same library, since it is not possible to have to versions of the same library in the classpath.
So I tried to fix the jetty dependencies to version 9.2.14.v20151106 which is really sort of ugly.
Did you use the com.google.gwt:gwt with scope=import in dependency management? This should declare all Jetty dependencies (not all of them, but all those directly depended on, just not the ones that only Jetty itself has dependencies on) and might be enough to fix your problem.
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt</artifactId>
<version>2.8.2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
…2) Then I tried to build the project.
It said:
Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.7.0: compile failed: A required class was missing while executing org.apache.maven.plugins: maven-compiler-plugin:3.7.0: compile: javax/lang/model/element/ ModuleElement
[ERROR] -----------------------------------------------------
[ERROR] realm = plugin>org.apache.maven.plugins:maven-compiler-plugin: 3.7.0
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy. SelfFirstStrategy
[ERROR] urls[0] = file:/home/joerg/ideaprojects/.m2/repository/org/apache/ maven/plugins/maven-compiler- plugin/3.7.0/maven-compiler- plugin-3.7.0.jar
[ERROR] urls[1] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ groovy/groovy-eclipse- compiler/2.9.2-03/groovy- eclipse-compiler-2.9.2-03.jar
[ERROR] urls[2] = file:/home/joerg/ideaprojects/.m2/repository/org/apache/ xbean/xbean-reflect/3.7/xbean- reflect-3.7.jar
[ERROR] urls[3] = file:/home/joerg/ideaprojects/.m2/repository/com/google/ collections/google- collections/1.0/google- collections-1.0.jar
[ERROR] urls[4] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ groovy/groovy-eclipse-batch/2. 4.13-01/groovy-eclipse-batch- 2.4.13-01.jar
[ERROR] urls[5] = file:/home/joerg/ideaprojects/.m2/repository/org/sonatype/ sisu/sisu-inject-bean/1.4.2/ sisu-inject-bean-1.4.2.jar
[ERROR] urls[6] = file:/home/joerg/ideaprojects/.m2/repository/org/sonatype/ sisu/sisu-guice/2.1.7/sisu- guice-2.1.7-noaop.jar
[ERROR] urls[7] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-utils/2.0.4/ plexus-utils-2.0.4.jar
[ERROR] urls[8] = file:/home/joerg/ideaprojects/.m2/repository/org/sonatype/ aether/aether-util/1.7/aether- util-1.7.jar
[ERROR] urls[9] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-interpolation/1. 14/plexus-interpolation-1.14. jar
[ERROR] urls[10] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-component- annotations/1.6/plexus- component-annotations-1.6.jar
[ERROR] urls[11] = file:/home/joerg/ideaprojects/.m2/repository/org/sonatype/ plexus/plexus-sec-dispatcher/ 1.3/plexus-sec-dispatcher-1.3. jar
[ERROR] urls[12] = file:/home/joerg/ideaprojects/.m2/repository/org/sonatype/ plexus/plexus-cipher/1.4/ plexus-cipher-1.4.jar
[ERROR] urls[13] = file:/home/joerg/ideaprojects/.m2/repository/org/apache/ maven/shared/maven-shared- utils/3.1.0/maven-shared- utils-3.1.0.jar
[ERROR] urls[14] = file:/home/joerg/ideaprojects/.m2/repository/commons-io/ commons-io/2.5/commons-io-2.5. jar
[ERROR] urls[15] = file:/home/joerg/ideaprojects/.m2/repository/org/apache/ maven/shared/maven-shared- incremental/1.1/maven-shared- incremental-1.1.jar
[ERROR] urls[16] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-java/0.9.2/ plexus-java-0.9.2.jar
[ERROR] urls[17] = file:/home/joerg/ideaprojects/.m2/repository/org/ow2/asm/ asm/6.0_BETA/asm-6.0_BETA.jar
[ERROR] urls[18] = file:/home/joerg/ideaprojects/.m2/repository/com/ thoughtworks/qdox/qdox/2.0-M7/ qdox-2.0-M7.jar
[ERROR] urls[19] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-compiler-api/2. 8.2/plexus-compiler-api-2.8.2. jar
[ERROR] urls[20] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-compiler- manager/2.8.2/plexus-compiler- manager-2.8.2.jar
[ERROR] urls[21] = file:/home/joerg/ideaprojects/.m2/repository/org/codehaus/ plexus/plexus-compiler-javac/ 2.8.2/plexus-compiler-javac-2. 8.2.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] : javax.lang.model.element.ModuleElement
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ PluginContainerException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
"javax/lang/model/element/ModuleElement" ??
Then I realized that you had said "GWT can now run on Java 9" in the release notes. You did not say: "GWT-Compiler must now run on Java 9"...
Nether the less I tried to set my JAVA_HOME to jdk 9 and error disappeared. (It caused many other problems to switch to Java 9 but that's a different story).
This is the maven-compiler-plugin, not GWT. Maybe try using version 3.6 rather than 3.7 if you're not using Java 9?
3) But Jetty 9.4.7 is the first jetty-project with basic java 9 support. So I had to upgrade my jetty-version.
4) Now I had to patch org.eclipse.jetty.server.Request because GWT calls a method getUri which has been renamed to getHttpURI() .
5) Then I had to patch org.eclipse.jetty.webapp.WebAppClassLoader because we have several dependencies probing for the existence of classes by trying to instancate them via reflection, which caused NullPointerExceptions in the Java 9 classloader. I had to catch them in the WebbAppClassLoader and convert them into ClassNotFoundExceptions.
The first GWT-Project has been built successfully and could be run in development mode. I thought: I'm done!
6) But then next project used GIN-Injection. And GIN does not build with Java9 due to SecurityException:
[INFO] [ERROR] Generator 'com.google.gwt.inject.rebind.GinjectorGenerator' threw an exception while rebinding 'myInjector'
[INFO] java.lang.SecurityException: Prohibited package name: java.lang
[INFO] at java.base/java.lang.ClassLoader.preDefineClass( ClassLoader.java:889)
[INFO] at java.base/java.lang.ClassLoader.defineClass( ClassLoader.java:1005)
[INFO] at java.base/java.lang.ClassLoader.defineClass( ClassLoader.java:868)
[INFO] at com.google.gwt.inject.rebind.GinBridgeClassLoader. findClass( GinBridgeClassLoader.java:160)
[INFO] at java.base/java.lang.ClassLoader.loadClass( ClassLoader.java:563)
[INFO] at com.google.gwt.inject.rebind.GinBridgeClassLoader. loadClass( GinBridgeClassLoader.java:103)
[INFO] at java.base/java.lang.ClassLoader.loadClass( ClassLoader.java:496)
[INFO] at java.base/java.lang.ClassLoader.defineClass1( Native Method)
[INFO] at java.base/java.lang.ClassLoader.defineClass( ClassLoader.java:1007)
[INFO] at java.base/java.lang.ClassLoader.defineClass( ClassLoader.java:868)
[INFO] at com.google.gwt.inject.rebind.GinBridgeClassLoader. findClass( GinBridgeClassLoader.java:160)
[INFO] at com.google.gwt.inject.rebind.GinBridgeClassLoader. loadClass( GinBridgeClassLoader.java:106)
[INFO] at java.base/java.lang.ClassLoader.loadClass( ClassLoader.java:496)
[INFO] at java.base/java.lang.ClassLoader.defineClass1( Native Method)
[INFO] at java.base/java.lang.ClassLoader.defineClass( ClassLoader.java:1007)
[INFO] at java.base/java.lang.ClassLoader.defineClass( ClassLoader.java:868)
[INFO] at com.google.gwt.inject.rebind.GinBridgeClassLoader. findClass( GinBridgeClassLoader.java:160)
[INFO] at com.google.gwt.inject.rebind.GinBridgeClassLoader. loadClass( GinBridgeClassLoader.java:106)
[INFO] at java.base/java.lang.ClassLoader.loadClass( ClassLoader.java:496)
[INFO] at java.base/java.lang.Class.getDeclaredConstructors0( Native Method)
[INFO] at java.base/java.lang.Class.privateGetDeclaredConstructors (Class.java:3110)
[INFO] at java.base/java.lang.Class.getDeclaredConstructors(Class. java:2314)
[INFO] at com.google.gwt.inject.rebind.resolution. ImplicitBindingCreator. getInjectConstructor( ImplicitBindingCreator.java: 270)
[INFO] at com.google.gwt.inject.rebind.resolution. ImplicitBindingCreator. createImplicitBindingForClass( ImplicitBindingCreator.java: 146)
[INFO] at com.google.gwt.inject.rebind.resolution. ImplicitBindingCreator.create( ImplicitBindingCreator.java: 140)
[INFO] at com.google.gwt.inject.rebind.resolution.DependencyExplorer. visit(DependencyExplorer.java: 106)
[INFO] at com.google.gwt.inject.rebind.resolution.DependencyExplorer. explore(DependencyExplorer. java:89)
[INFO] at com.google.gwt.inject.rebind.resolution.BindingResolver. resolveBindings( BindingResolver.java:70)
[INFO] at com.google.gwt.inject.rebind.GinjectorBindings. resolveBindings( GinjectorBindings.java:238)
[INFO] at com.google.gwt.inject.rebind.BindingsProcessor. resolveAllUnresolvedBindings( BindingsProcessor.java:146)
[INFO] at com.google.gwt.inject.rebind.BindingsProcessor.process( BindingsProcessor.java:105)
[INFO] at com.google.gwt.inject.rebind.GinjectorGeneratorImpl. generate( GinjectorGeneratorImpl.java: 79)
[INFO] at com.google.gwt.inject.rebind.GinjectorGenerator.generate( GinjectorGenerator.java:74)
[INFO] at com.google.gwt.core.ext.IncrementalGenerator. generateNonIncrementally( IncrementalGenerator.java:40)
[INFO] at com.google.gwt.dev.javac.StandardGeneratorContext. runGeneratorIncrementally( StandardGeneratorContext.java: 745)
[INFO] at com.google.gwt.dev.cfg.RuleGenerateWith.realize( RuleGenerateWith.java:103)
[INFO] at com.google.gwt.dev.shell.StandardRebindOracle$Rebinder. rebind(StandardRebindOracle. java:78)
[INFO] at com.google.gwt.dev.shell.StandardRebindOracle.rebind( StandardRebindOracle.java:262)
[INFO] at com.google.gwt.dev.shell.StandardRebindOracle.rebind( StandardRebindOracle.java:251)
[INFO] at com.google.gwt.dev.PrecompilationContextCreator$ 1.getAllPossibleRebindAnswers( PrecompilationContextCreator. java:86)
[INFO] at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor. createStaticRebindExpression( UnifyAst.java:519)
[INFO] at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor. createRebindExpression( UnifyAst.java:487)
[INFO] at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor. maybeHandleMagicMethodCall( UnifyAst.java:415)
[INFO] at com.google.gwt.dev.jjs.impl.UnifyAst$UnifyVisitor.visit( UnifyAst.java:402)
[INFO] at com.google.gwt.dev.jjs.ast.JMethodCall.traverse( JMethodCall.java:265)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.traverse( JModVisitor.java:361)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:273)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:265)
[INFO] at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java: 118)
[INFO] at com.google.gwt.dev.jjs.ast.JCastOperation.traverse( JCastOperation.java:76)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.traverse( JModVisitor.java:361)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:273)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:265)
[INFO] at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java: 118)
[INFO] at com.google.gwt.dev.jjs.ast.JDeclarationStatement. traverse( JDeclarationStatement.java:49)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor$ListContext. traverse(JModVisitor.java:88)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor. acceptWithInsertRemove( JModVisitor.java:331)
[INFO] at com.google.gwt.dev.jjs.ast.JBlock.traverse(JBlock.java: 94)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.traverse( JModVisitor.java:361)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:273)
[INFO] at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java: 139)
[INFO] at com.google.gwt.dev.jjs.ast.JVisitor.accept(JVisitor.java: 135)
[INFO] at com.google.gwt.dev.jjs.ast.JMethodBody.traverse( JMethodBody.java:83)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.traverse( JModVisitor.java:361)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:273)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:265)
[INFO] at com.google.gwt.dev.jjs.ast.JMethod.visitChildren(JMethod. java:786)
[INFO] at com.google.gwt.dev.jjs.ast.JMethod.traverse(JMethod.java: 778)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.traverse( JModVisitor.java:361)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:273)
[INFO] at com.google.gwt.dev.jjs.ast.JModVisitor.accept( JModVisitor.java:265)
[INFO] at com.google.gwt.dev.jjs.impl.UnifyAst.mainLoop(UnifyAst. java:1401)
[INFO] at com.google.gwt.dev.jjs.impl.UnifyAst.exec(UnifyAst.java: 896)
[INFO] at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler. unifyJavaAst( JavaToJavaScriptCompiler.java: 1410)
[INFO] at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler. constructJavaAst( JavaToJavaScriptCompiler.java: 1222)
[INFO] at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler. precompile( JavaToJavaScriptCompiler.java: 1140)
[INFO] at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler. precompile( JavaToJavaScriptCompiler.java: 255)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java: 255)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java: 202)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java: 143)
[INFO] at com.google.gwt.dev.Compiler.compile(Compiler.java:204)
[INFO] at com.google.gwt.dev.Compiler.compile(Compiler.java:155)
[INFO] at com.google.gwt.dev.Compiler.compile(Compiler.java:144)
[INFO] at com.google.gwt.dev.Compiler$1.run(Compiler.java:118)
[INFO] at com.google.gwt.dev.CompileTaskRunner.doRun( CompileTaskRunner.java:55)
[INFO] at com.google.gwt.dev.CompileTaskRunner. runWithAppropriateLogger( CompileTaskRunner.java:50)
[INFO] at com.google.gwt.dev.Compiler.main(Compiler.java:125)
I'm really upset after several days of work for nothing.
So:
Please publish a release with a bugfix for Chrome 61, that does not force me to upgrade my build to java9!
I don't use Java 9; GWT does not force you to use Java 9 (quite the contrary actually).
Please fix your jetty-dependencies!
GWT itself depends on 9.2.14, HtmlUnit depends on 9.2.13; but our BOM (com.google.gwt:gwt) should declare all required Jetty versions. Could you try and tell us if it needs updating?
(btw, you opted into using dependency convergence enforcement rules, which is a PITA by itself; without it, all Jetty dependencies from gwt-dev and gwt-user should be resolved to 9.2.14, so there's no problem here)
Please do not mix bugfix releases (Chrome 61) and new feature releases (Java 9) in the future!
Kind regards
Jörg Pfründer
Am Donnerstag, 19. Oktober 2017 22:30:49 UTC+2 schrieb Colin Alworth:Today we released the next version of GWT, version 2.8.2. A few quick highlights from this new release:
- GWT can now run on Java 9 (though Java 9 features are not yet supported, coming soon!)
- Chrome 61 change in getAbsoluteTop/Left has been fixed
- Errors on the page reported from window.onerror are now reported to your uncaught exception handler
- GWT now generates CSP compliant dom elements
The release notes can be found at http://www.gwtproject.org/
release-notes.html#Release_ . Get yours from Maven Central, or from the zip release.Notes_2_8_2
Special thanks to Max Barkley of RedHat who helped lead the release effort this time, and to all of the fantastic testers who helped us ensure that this release was ready to go.
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