Maven编译GWT和的OpenJDK 11 [英] Maven Compile GWT & OpenJDK 11
本文介绍了Maven编译GWT和的OpenJDK 11的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
最近，我试图将我的项目切换为使用OpenJDK 11，但是Maven构建失败，因为其中一个GWT模块无法编译.
Recently, I am trying to switch my project to use OpenJDK 11, however the Maven build is failing because one of the GWT modules is failing to compile.
该项目当前使用的是GWT 2.6.0，如果任何较新的版本与OpenJDK 11兼容，我都尝试将其更新为2.8.2.该构建是从Eclipse IDE 4.9.0运行的.
The project currently uses GWT 2.6.0, and I've tried updating to 2.8.2 if any of the newer versions is compatible with OpenJDK 11. The build is run from Eclipse IDE 4.9.0
在2.6.0下运行时，发生以下错误:
When running with 2.6.0, the following error occurs:
Compiling module XXXXModule
[INFO] Looking for precompiled archives. To disable, use -Dgwt.usearchives=false
[INFO] Loading archived module: jar:file:/C:/Users/XXXX/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/user/User.gwtar
[INFO] Loading archived module: jar:file:/C:/Users/XXXX/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/core/Core.gwtar
[INFO] Loading archived module: jar:file:/C:/Users/XXXX/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/regexp/RegExp.gwtar
[INFO] Loading archived module: jar:file:/C:/Users/XXXX/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/web/bindery/event/Event.gwtar
[INFO] Loading archived module: jar:file:/C:/Users/XXXX/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/xml/XML.gwtar
[INFO] Loading archived module: jar:file:/C:/Users/XXXX/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/json/JSON.gwtar
[INFO] Found 0 cached/archived units. Used 0 / 0 units from cache.
[INFO] Compiling...
[INFO] Compilation completed in 0.00 seconds
[INFO] Added 0 units to cache since last cleanup.
[INFO] Validating units:
[INFO] Removing invalidated units
[INFO] Checked 0 dependencies for errors.
[INFO] [ERROR] Unable to find type 'java.lang.Object'
[INFO] [ERROR] Hint: Check that your module inherits 'com.google.gwt.core.Core' either directly or indirectly (most often by inheriting module 'com.google.gwt.user.User')
[INFO] Shutting down PersistentUnitCache thread
....
[ERROR] Failed to execute goal org.codehaus.mojo:gwt-maven-plugin:2.6.0:compile (default) on project tlm-war: Command [[
[ERROR] C:\jdk-11.0.1\bin\java -Xmx512M -Xss1024k -classpath .... -localWorkers 4 -XfragmentCount -1 -sourceLevel auto -gen C:\Users\XXXX\gitrepos\XXXX\XXXX\XXXX\target\.generated XXXXModule XXXXModule XXXXModule XXXXModule
但是在调查XXXXModule.gwt.xml时，该文件确实包含"Core"
But investigating XXXXModule.gwt.xml, the file does include 'Core'
<module>
<inherits name="com.google.gwt.user.User" />
<inherits name="com.smartgwt.SmartGwt" />
....
I did some investigation online, and according to this answer, Migrating a GWT 2.5 web app to Java 10, I should try upgrading to GWT 2.8.2, but the build gets another issue:
[ERROR] Unexpected internal compiler error
[INFO] java.lang.SecurityException: class "org.eclipse.jdt.internal.compiler.ast.LambdaExpression"'s signer information does not match signer information of other classes in the same package
[INFO] at java.base/java.lang.ClassLoader.checkCerts(ClassLoader.java:1150)
[INFO] at java.base/java.lang.ClassLoader.preDefineClass(ClassLoader.java:905)
[INFO] at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1014)
[INFO] at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
[INFO] at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802)
[INFO] at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700)
[INFO] at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623)
[INFO] at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
[INFO] at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
[INFO] at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.<init>(GwtAstBuilder.java:3881)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3970)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:129)
[INFO] at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:336)
[INFO] at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:470)
[INFO] at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:1040)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:325)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:548)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:479)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:465)
[INFO] at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:423)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:222)
[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$1.run(Compiler.java:118)
[INFO] at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
[INFO] at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
[INFO] at com.google.gwt.dev.Compiler.main(Compiler.java:125)
是否有其他人成功地使用OpenJDK 11编译了GWT 2.6-2.8.2?
Has anyone else been successful in compiling GWT 2.6-2.8.2 with OpenJDK 11?
pom.xml的片段
Snippet of pom.xml
....
<properties>
<gwt.version>2.8.2</gwt.version>
<smartgwt.version>2.4</smartgwt.version>
</properties>
....
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>${gwt.version}</version>
<executions>
<execution>
<configuration>
<modules>
<module>XXXXModule</module>
<module>XXXXModule</module>
<module>XXXXModule</module>
<module>XXXXModule</module>
</modules>
<extraJvmArgs>-Xmx512M -Xss1024k</extraJvmArgs>
<logLevel>DEBUG</logLevel>
</configuration>
<goals>
<goal>compile</goal>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
Classpath:
Classpath:
C:\Users\XXXX\.m2\repository\com\google\gwt\gwt-servlet\2.8.2\gwt-servlet-2.8.2.jar
C:\Users\XXXX\.m2\repository\com\google\gwt\gwt-user\2.8.2\gwt-user-2.8.2.jar
C:\Users\XXXX\.m2\repository\com\google\jsinterop\jsinterop-annotations\1.0.2\jsinterop-annotations-1.0.2.jar
C:\Users\XXXX\.m2\repository\com\google\jsinterop\jsinterop-annotations\1.0.2\jsinterop-annotations-1.0.2-sources.jar
C:\Users\XXXX\.m2\repository\javax\validation\validation-api\1.0.0.GA\validation-api-1.0.0.GA.jar
C:\Users\XXXX\.m2\repository\javax\validation\validation-api\1.0.0.GA\validation-api-1.0.0.GA-sources.jar
C:\Users\XXXX\.m2\repository\javax\servlet\javax.servlet-api\3.0.1\javax.servlet-api-3.0.1.jar
C:\Users\XXXX\.m2\repository\org\w3c\css\sac\1.3\sac-1.3.jar
C:\Users\XXXX\.m2\repository\com\smartgwt\smartgwt\2.4\smartgwt-2.4.jar
C:\Users\XXXX\.m2\repository\com\smartgwt\smartgwt-skins\2.4\smartgwt-skins-2.4.jar
C:\Users\XXXX\.m2\repository\org\slf4j\slf4j-api\1.7.6\slf4j-api-1.7.6.jar
C:\Users\XXXX\.m2\repository\org\slf4j\jcl-over-slf4j\1.7.6\jcl-over-slf4j-1.7.6.jar
C:\Users\XXXX\.m2\repository\org\slf4j\log4j-over-slf4j\1.7.6\log4j-over-slf4j-1.7.6.jar
C:\Users\XXXX\.m2\repository\ch\qos\logback\logback-classic\1.1.1\logback-classic-1.1.1.jar
C:\Users\XXXX\.m2\repository\ch\qos\logback\logback-core\1.1.1\logback-core-1.1.1.jar
C:\Users\XXXX\.m2\repository\commons-codec\commons-codec\1.9\commons-codec-1.9.jar
C:\Users\XXXX\.m2\repository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
C:\Users\XXXX\.m2\repository\org\jasypt\jasypt\1.9.2\jasypt-1.9.2.jar
C:\Users\XXXX\.m2\repository\org\hibernate\hibernate-core\4.3.5.Final\hibernate-core-4.3.5.Final.jar
C:\Users\XXXX\.m2\repository\org\jboss\logging\jboss-logging\3.1.3.GA\jboss-logging-3.1.3.GA.jar
C:\Users\XXXX\.m2\repository\org\jboss\logging\jboss-logging-annotations\1.2.0.Beta1\jboss-logging-annotations-1.2.0.Beta1.jar
C:\Users\XXXX\.m2\repository\org\jboss\spec\javax\transaction\jboss-transaction-api_1.2_spec\1.0.0.Final\jboss-transaction-api_1.2_spec-1.0.0.Final.jar
C:\Users\XXXX\.m2\repository\dom4j\dom4j\1.6.1\dom4j-1.6.1.jar
C:\Users\XXXX\.m2\repository\xml-apis\xml-apis\1.0.b2\xml-apis-1.0.b2.jar
C:\Users\XXXX\.m2\repository\org\hibernate\common\hibernate-commons-annotations\4.0.4.Final\hibernate-commons-annotations-4.0.4.Final.jar
C:\Users\XXXX\.m2\repository\org\hibernate\javax\persistence\hibernate-jpa-2.1-api\1.0.0.Final\hibernate-jpa-2.1-api-1.0.0.Final.jar
C:\Users\XXXX\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar
C:\Users\XXXX\.m2\repository\org\jboss\jandex\1.1.0.Final\jandex-1.1.0.Final.jar
C:\Users\XXXX\.m2\repository\org\hibernate\hibernate-jpamodelgen\4.3.5.Final\hibernate-jpamodelgen-4.3.5.Final.jar
C:\Users\XXXX\.m2\repository\org\hibernate\hibernate-tools\4.3.1.CR1\hibernate-tools-4.3.1.CR1.jar
C:\Users\XXXX\.m2\repository\org\hibernate\hibernate-entitymanager\4.3.1.Final\hibernate-entitymanager-4.3.1.Final.jar
C:\Users\XXXX\.m2\repository\javax\transaction\jta\1.1\jta-1.1.jar
C:\Users\XXXX\.m2\repository\freemarker\freemarker\2.3.8\freemarker-2.3.8.jar
C:\Users\XXXX\.m2\repository\org\hibernate\jtidy\r8-20060801\jtidy-r8-20060801.jar
C:\Users\XXXX\.m2\repository\org\eclipse\tycho\org.eclipse.jdt.core\3.9.1.v20130905-0837\org.eclipse.jdt.core-3.9.1.v20130905-0837.jar
C:\Users\XXXX\.m2\repository\org\eclipse\text\3.3.0-v20070606-0010\text-3.3.0-v20070606-0010.jar
C:\Users\XXXX\.m2\repository\org\eclipse\core\commands\3.3.0-I20070605-0010\commands-3.3.0-I20070605-0010.jar
C:\Users\XXXX\.m2\repository\org\eclipse\equinox\common\3.6.200-v20130402-1505\common-3.6.200-v20130402-1505.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-context\3.2.9.RELEASE\spring-context-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-aop\3.2.9.RELEASE\spring-aop-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\aopalliance\aopalliance\1.0\aopalliance-1.0.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-beans\3.2.9.RELEASE\spring-beans-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-expression\3.2.9.RELEASE\spring-expression-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-jdbc\3.2.9.RELEASE\spring-jdbc-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-tx\3.2.9.RELEASE\spring-tx-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-core\3.2.9.RELEASE\spring-core-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-orm\3.2.9.RELEASE\spring-orm-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\com\oracle\jdbc\ojdbc6\11.2.0.3.0\ojdbc6-11.2.0.3.0.jar
C:\Users\XXXX\.m2\repository\com\oracle\ucp\ucp\11.2.0.3.0\ucp-11.2.0.3.0.jar
C:\Users\XXXX\.m2\repository\com\mysema\querydsl\querydsl-sql\2.8.2\querydsl-sql-2.8.2.jar
C:\Users\XXXX\.m2\repository\com\mysema\querydsl\querydsl-core\2.8.2\querydsl-core-2.8.2.jar
C:\Users\XXXX\.m2\repository\com\google\guava\guava\11.0.2\guava-11.0.2.jar
C:\Users\XXXX\.m2\repository\com\google\code\findbugs\jsr305\1.3.9\jsr305-1.3.9.jar
C:\Users\XXXX\.m2\repository\com\mysema\commons\mysema-commons-lang\0.2.4\mysema-commons-lang-0.2.4.jar
C:\Users\XXXX\.m2\repository\cglib\cglib\2.2\cglib-2.2.jar
C:\Users\XXXX\.m2\repository\asm\asm\3.1\asm-3.1.jar
C:\Users\XXXX\.m2\repository\joda-time\joda-time\1.6\joda-time-1.6.jar
C:\Users\XXXX\.m2\repository\javax\inject\javax.inject\1\javax.inject-1.jar
C:\Users\XXXX\.m2\repository\org\springframework\data\spring-data-jdbc-core\1.0.0.RELEASE\spring-data-jdbc-core-1.0.0.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\springframework\retry\spring-retry\1.0.0.RELEASE\spring-retry-1.0.0.RELEASE.jar
C:\Users\XXXX\.m2\repository\org\codehaus\jackson\jackson-mapper-asl\1.9.13\jackson-mapper-asl-1.9.13.jar
C:\Users\XXXX\.m2\repository\org\codehaus\jackson\jackson-core-asl\1.9.13\jackson-core-asl-1.9.13.jar
C:\Users\XXXX\.m2\repository\commons-collections\commons-collections\3.2.1\commons-collections-3.2.1.jar
C:\Users\XXXX\.m2\repository\commons-beanutils\commons-beanutils\1.9.1\commons-beanutils-1.9.1.jar
C:\Users\XXXX\.m2\repository\commons-configuration\commons-configuration\1.10\commons-configuration-1.10.jar
C:\Users\XXXX\.m2\repository\commons-lang\commons-lang\2.6\commons-lang-2.6.jar
C:\Users\XXXX\.m2\repository\org\springframework\spring-test\3.2.9.RELEASE\spring-test-3.2.9.RELEASE.jar
C:\Users\XXXX\.m2\repository\commons-io\commons-io\2.4\commons-io-2.4.jar
C:\Users\XXXX\.m2\repository\javax\xml\bind\jaxb-api\2.3.1\jaxb-api-2.3.1.jar
C:\Users\XXXX\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.1\jaxb-runtime-2.3.1.jar
C:\Users\XXXX\.m2\repository\org\glassfish\jaxb\txw2\2.3.1\txw2-2.3.1.jar
C:\Users\XXXX\.m2\repository\com\sun\istack\istack-commons-runtime\3.0.7\istack-commons-runtime-3.0.7.jar
C:\Users\XXXX\.m2\repository\org\jvnet\staxex\stax-ex\1.8\stax-ex-1.8.jar
C:\Users\XXXX\.m2\repository\com\sun\xml\fastinfoset\FastInfoset\1.2.15\FastInfoset-1.2.15.jar
C:\Users\XXXX\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar
C:\Users\XXXX\.m2\repository\javax\activation\javax.activation-api\1.2.0\javax.activation-api-1.2.0.jar
C:\Users\XXXX\.m2\repository\org\apache\cxf\cxf-xjc-plugin\3.2.3\cxf-xjc-plugin-3.2.3.jar
C:\Users\XXXX\.m2\repository\org\sonatype\plexus\plexus-build-api\0.0.7\plexus-build-api-0.0.7.jar
C:\Users\XXXX\.m2\repository\org\codehaus\plexus\plexus-utils\2.0.5\plexus-utils-2.0.5.jar
C:\Users\XXXX\.m2\repository\org\codehaus\plexus\plexus-archiver\1.2\plexus-archiver-1.2.jar
C:\Users\XXXX\.m2\repository\org\codehaus\plexus\plexus-container-default\1.0-alpha-9-stable-1\plexus-container-default-1.0-alpha-9-stable-1.jar
C:\Users\XXXX\.m2\repository\classworlds\classworlds\1.1-alpha-2\classworlds-1.1-alpha-2.jar
C:\Users\XXXX\.m2\repository\org\codehaus\plexus\plexus-io\1.0.1\plexus-io-1.0.1.jar
C:\Users\XXXX\.m2\repository\org\apache\maven\shared\maven-artifact-resolver\1.0\maven-artifact-resolver-1.0.jar
C:\Users\XXXX\.m2\repository\com\sun\xml\bind\jaxb-xjc\2.3.0\jaxb-xjc-2.3.0.jar
C:\Users\XXXX\.m2\repository\com\sun\xml\bind\jaxb-impl\2.3.0\jaxb-impl-2.3.0.jar
C:\Users\XXXX\.m2\repository\com\sun\xml\bind\jaxb-core\2.3.0\jaxb-core-2.3.0.jar
C:\Users\XXXX\.m2\repository\xml-resolver\xml-resolver\1.2\xml-resolver-1.2.jar
C:\Users\XXXX\.m2\repository\org\javassist\javassist\3.18.2-GA\javassist-3.18.2-GA.jar
C:\Users\XXXX\.m2\repository\javax\xml\ws\jaxws-api\2.3.0\jaxws-api-2.3.0.jar
C:\Users\XXXX\.m2\repository\javax\xml\soap\javax.xml.soap-api\1.4.0\javax.xml.soap-api-1.4.0.jar
C:\Users\XXXX\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\7.0.91\tomcat-embed-core-7.0.91.jar
C:\Users\XXXX\.m2\repository\org\apache\tomcat\tomcat-annotations-api\7.0.91\tomcat-annotations-api-7.0.91.jar
C:\Users\XXXX\.m2\repository\org\apache\tomcat\embed\tomcat-embed-jasper\7.0.91\tomcat-embed-jasper-7.0.91.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jdt\core\compiler\ecj\4.4.2\ecj-4.4.2.jar
C:\Users\XXXX\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\7.0.91\tomcat-embed-el-7.0.91.jar
C:\Users\XXXX\.m2\repository\org\apache\tomcat\embed\tomcat-embed-logging-log4j\7.0.91\tomcat-embed-logging-log4j-7.0.91.jar
C:\Users\XXXX\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\7.0.91\tomcat-embed-websocket-7.0.91.jar
C:\Users\XXXX\.m2\repository\commons-fileupload\commons-fileupload\1.2\commons-fileupload-1.2.jar
C:\Users\XXXX\.m2\repository\javax\activation\activation\1.1.1\activation-1.1.1.jar
C:\Users\XXXX\.m2\repository\com\google\gwt\gwt-dev\2.8.2\gwt-dev-2.8.2.jar
C:\Users\XXXX\.m2\repository\com\google\code\findbugs\jsr305\1.3.9\jsr305-1.3.9.jar
C:\Users\XXXX\.m2\repository\com\google\code\gson\gson\2.6.2\gson-2.6.2.jar
C:\Users\XXXX\.m2\repository\org\ow2\asm\asm\5.0.3\asm-5.0.3.jar
C:\Users\XXXX\.m2\repository\org\ow2\asm\asm-util\5.0.3\asm-util-5.0.3.jar
C:\Users\XXXX\.m2\repository\org\ow2\asm\asm-tree\5.0.3\asm-tree-5.0.3.jar
C:\Users\XXXX\.m2\repository\org\ow2\asm\asm-commons\5.0.3\asm-commons-5.0.3.jar
C:\Users\XXXX\.m2\repository\colt\colt\1.2.0\colt-1.2.0.jar
C:\Users\XXXX\.m2\repository\ant\ant\1.6.5\ant-1.6.5.jar
C:\Users\XXXX\.m2\repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
C:\Users\XXXX\.m2\repository\commons-io\commons-io\2.4\commons-io-2.4.jar
C:\Users\XXXX\.m2\repository\com\ibm\icu\icu4j\50.1.1\icu4j-50.1.1.jar
C:\Users\XXXX\.m2\repository\tapestry\tapestry\4.0.2\tapestry-4.0.2.jar
C:\Users\XXXX\.m2\repository\net\sourceforge\htmlunit\htmlunit\2.19\htmlunit-2.19.jar
C:\Users\XXXX\.m2\repository\xalan\xalan\2.7.2\xalan-2.7.2.jar
C:\Users\XXXX\.m2\repository\xalan\serializer\2.7.2\serializer-2.7.2.jar
C:\Users\XXXX\.m2\repository\xml-apis\xml-apis\1.4.01\xml-apis-1.4.01.jar
C:\Users\XXXX\.m2\repository\org\apache\commons\commons-lang3\3.4\commons-lang3-3.4.jar
C:\Users\XXXX\.m2\repository\org\apache\httpcomponents\httpclient\4.5.1\httpclient-4.5.1.jar
C:\Users\XXXX\.m2\repository\org\apache\httpcomponents\httpcore\4.4.3\httpcore-4.4.3.jar
C:\Users\XXXX\.m2\repository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
C:\Users\XXXX\.m2\repository\commons-codec\commons-codec\1.10\commons-codec-1.10.jar
C:\Users\XXXX\.m2\repository\org\apache\httpcomponents\httpmime\4.5.1\httpmime-4.5.1.jar
C:\Users\XXXX\.m2\repository\net\sourceforge\htmlunit\htmlunit-core-js\2.17\htmlunit-core-js-2.17.jar
C:\Users\XXXX\.m2\repository\xerces\xercesImpl\2.11.0\xercesImpl-2.11.0.jar
C:\Users\XXXX\.m2\repository\net\sourceforge\nekohtml\nekohtml\1.9.22\nekohtml-1.9.22.jar
C:\Users\XXXX\.m2\repository\net\sourceforge\cssparser\cssparser\0.9.18\cssparser-0.9.18.jar
C:\Users\XXXX\.m2\repository\org\w3c\css\sac\1.3\sac-1.3.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\websocket\websocket-client\9.2.13.v20150730\websocket-client-9.2.13.v20150730.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-util\9.2.14.v20151106\jetty-util-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-io\9.2.14.v20151106\jetty-io-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\websocket\websocket-common\9.2.13.v20150730\websocket-common-9.2.13.v20150730.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\websocket\websocket-api\9.2.13.v20150730\websocket-api-9.2.13.v20150730.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-webapp\9.2.14.v20151106\jetty-webapp-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-xml\9.2.14.v20151106\jetty-xml-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-servlet\9.2.14.v20151106\jetty-servlet-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-security\9.2.14.v20151106\jetty-security-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-server\9.2.14.v20151106\jetty-server-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\javax\servlet\javax.servlet-api\3.1.0\javax.servlet-api-3.1.0.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-http\9.2.14.v20151106\jetty-http-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-servlets\9.2.14.v20151106\jetty-servlets-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-continuation\9.2.14.v20151106\jetty-continuation-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-annotations\9.2.14.v20151106\jetty-annotations-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-plus\9.2.14.v20151106\jetty-plus-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\jetty-jndi\9.2.14.v20151106\jetty-jndi-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\javax\annotation\javax.annotation-api\1.2\javax.annotation-api-1.2.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\apache-jsp\9.2.14.v20151106\apache-jsp-9.2.14.v20151106.jar
C:\Users\XXXX\.m2\repository\org\eclipse\jetty\toolchain\jetty-schemas\3.1.M0\jetty-schemas-3.1.M0.jar
C:\Users\XXXX\.m2\repository\org\mortbay\jasper\apache-jsp\8.0.9.M3\apache-jsp-8.0.9.M3.jar
C:\Users\XXXX\.m2\repository\org\mortbay\jasper\apache-el\8.0.9.M3\apache-el-8.0.9.M3.jar
现在，我确实注意到gwt-dev和ecj jar的LambdaExpression具有相同的软件包.但是我删除了ecj，但仍然遇到相同的问题. Apache-jsp jar确实具有LambdaExpression但包不同，所以我怀疑这是问题所在.
Now I did notice that gwt-dev and ecj jar does have LambdaExpression with the same package. But I removed ecj and I still get the same issue. Apache-jsp jar does have a LambdaExpression but different package so I doubt that is the issue.
推荐答案
GWT 2.8.2与openjdk11一起使用. 在这里，您可以看到tbroyer gwt-maven-plugin可与openjdk11同时使用最新的GWT版本(版本2.8.2)和最新的开发提交(版本HEAD-SNAPSHOT).
GWT 2.8.2 works with openjdk11. Here you can see that the tbroyer gwt-maven-plugin works with openjdk8 and openjdk11 using both last GWT release (version 2.8.2) and last development commit (version HEAD-SNAPSHOT).
因此，您确实应该升级到GWT 2.8.2. GWT仅支持最新版本.通常，版本之间的升级是微不足道的，因为多年来几乎没有进行过API更改，并且仅添加了错误修复和新的Java语言支持.应该很容易.
So, you really should upgrade to GWT 2.8.2. GWT only support the last version. Usually upgrading between version is trivial because almost no API changes have been made for years and only bug fixes and new java language support has been added. It should be quite easy.
在您的情况下，这似乎是一个依赖性问题，可能是因为您的某些依赖性对旧版本的GWT本身具有依赖性.为避免依赖关系冲突，建议使用BOM表依赖关系. 本教程仅包含有关为什么以及如何使用GWT的简要说明. BOM依赖性.本质上，将此添加到您的根项目pom.xml:
In your case, it seems to be a dependency problem, maybe because some of your dependencies have a dependency on the old version of GWT itself. To avoid dependencies conflicts it is recommended to use the BOM dependency. This tutorial includes a minimal explanation of why and how to use the GWT BOM dependency. Essentially, add this in your root project pom.xml:
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt</artifactId>
<version>2.8.2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
这篇关于Maven编译GWT和的OpenJDK 11的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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