我在Vaadin8迁移后需要Widgetset编译错误
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我刚刚将我的Vaadin项目从7.7.6迁移到8.0.5。首先，我想使用Vaadin8迁移工具，但我的IDE使用了太多的vaadin。* import，所以我只是手动完成。经过几个小时的工作（兼容包导入）maven构建再次工作，我想在我的浏览器中打开WebApp但我得到“无法加载Widgetset ...”错误消息。我认为我必须重新编译Widgetset但是vaadin-maven-plugin会抛出一个错误：
编辑04.05.2017：我删除了QueryDSL依赖“querydsl-apt”并且widgetset正在编译...有谁知道为什么会这样？
c:devworkspace_intellijwsi>mvn vaadin:compile
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building wsi 2.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for com.querydsl:querydsl-core:jar:3.7.4 is missing, no dependency information available
[INFO]
[INFO] --- vaadin-maven-plugin:8.0.5:compile (default-cli) @ wsi ---
[INFO] auto discovered modules [WsiWidgetset]
[INFO] Using com.vaadin:vaadin-client-compiler version 8.0.5
[INFO] Compiling module WsiWidgetset
[INFO] [ERROR] An internal compiler exception occurred
[INFO] com.google.gwt.dev.jjs.InternalCompilerException: Error constructing Java AST
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.translateException(GwtAstBuilder.java:3944)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.getInternalCompilerException(GwtAstBuilder.java:4351)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.createMembers(GwtAstBuilder.java:4043)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.processImpl(GwtAstBuilder.java:3883)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3918)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:129)
[INFO] at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:384)
[INFO] at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:470)
[INFO] at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:1092)
[INFO] at com.google.gwt.dev.javac.CompilationStateBuilder$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)
[INFO] Caused by: java.lang.NoSuchMethodError: org.eclipse.jdt.internal.compiler.lookup.MethodBinding.isDefaultMethod()Z
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.createMethod(GwtAstBuilder.java:4138)
[INFO] at com.google.gwt.dev.jjs.impl.GwtAstBuilder.createMembers(GwtAstBuilder.java:4033)
[INFO] ... 21 more
[INFO] [ERROR] at SVGPathSegLinetoVerticalAbs.java(30): public interface SVGPathSegLinetoVerticalAbs extends SVGPathSeg
[INFO] org.eclipse.jdt.internal.compiler.ast.TypeDeclaration
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.929 s
[INFO] Finished at: 2017-05-02T15:04:34+02:00
[INFO] Final Memory: 35M/434M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.vaadin:vaadin-maven-plugin:8.0.5:compile (default-cli) on project wsi: Command [[
[ERROR] C:Program FilesJavajdk1.8.0_102jreinjava -Xmx1G -Dgwt.persistentunitcache=false com.google.gwt.dev.Compiler -logLevel INFO -style OBF -war c:devworkspace_intellijwsi argetclassesVAADINwidgetsets -localWorkers 4 -failOnError -XfragmentCount -1 -sourceLevel auto -gen c:devworkspace_intellijwsi arget.generated WsiWidgetset
[ERROR] ]] failed with status 1
[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/MojoExecutionException
我的pom.xml看起来像这样：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
[...]
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath />
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<vaadin.version>8.0.5</vaadin.version>
<vaadin.plugin.version>8.0.5</vaadin.plugin.version>
<vaadin.charts.version>4.0.0</vaadin.charts.version>
<vaadin.spring.version>2.0.1</vaadin.spring.version>
<vaadin.context.menu.version>2.0.0</vaadin.context.menu.version>
<vaadin.fontawesome.version>1.3.4</vaadin.fontawesome.version>
<vaadin.componentrenderer.version>2.0.0</vaadin.componentrenderer.version>
[...]
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-ldap</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
<version>${vaadin.spring.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.0</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-push</artifactId>
</dependency>
<dependency>
<groupId>org.vaadin.addons</groupId>
<artifactId>fontawesomelabel</artifactId>
<version>${vaadin.fontawesome.version}</version>
</dependency>
<dependency>
<groupId>org.apache.directory.server</groupId>
<artifactId>apacheds-server-jndi</artifactId>
<version>1.5.5</version>
</dependency>
<dependency>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-core</artifactId>
<version>4.0.1</version><!--$NO-MVN-MAN-VER$-->
</dependency>
<dependency>
<groupId>org.imgscalr</groupId>
<artifactId>imgscalr-lib</artifactId>
<version>4.2</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
</dependency>
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-broker</artifactId>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-core</artifactId>
<version>4.1.4</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>4.1.4</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>4.1.4</version>
</dependency>
<dependency>
<groupId>org.vaadin.addons</groupId>
<artifactId>mediaelementjs-player</artifactId>
<version>1.3.3</version>
</dependency>
<dependency>
<groupId>org.vaadin.patrik</groupId>
<artifactId>GridFastNavigation</artifactId>
<version>0.2.1</version>
</dependency>
<!-- Eigenes Kompilat, da Sourcen nicht attached waren -->
<dependency>
<groupId>org.vaadin.addons.lazyquerycontainer</groupId>
<artifactId>vaadin-lazyquerycontainer</artifactId>
<version>7.6.1.3</version>
</dependency>
<!-- WIDGETSET -->
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-charts</artifactId>
<version>${vaadin.charts.version}</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-context-menu</artifactId>
<version>${vaadin.context.menu.version}</version>
</dependency>
<dependency>
<groupId>de.datenhahn.vaadin</groupId>
<artifactId>componentrenderer</artifactId>
<version>${vaadin.componentrenderer.version}</version>
</dependency>
<!-- WIDGETSET END -->
[...]
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-compatibility-server</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-compatibility-client</artifactId>
</dependency>
</dependencies>
<repositories>
<repository>
<id>vaadin-addons</id>
<url>http://maven.vaadin.com/vaadin-addons</url>
</repository>
</repositories>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>${vaadin.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
<!-- Clean up also any pre-compiled themes -->
<configuration>
<filesets>
<fileset>
<directory>src/main/webapp/VAADIN/themes</directory>
<includes>
<include>**/styles.css</include>
<include>**/styles.scss.cache</include>
</includes>
</fileset>
</filesets>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
<!-- Exclude some unnecessary files generated by the GWT compiler. -->
<packagingExcludes>WEB-INF/classes/VAADIN/gwt-unitCache/**, WEB-INF/classes/VAADIN/widgetsets/WEB-INF/**</packagingExcludes>
</configuration>
</plugin>
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<version>${vaadin.plugin.version}</version>
<configuration>
<extraJvmArgs>-Xmx1G</extraJvmArgs>
</configuration>
<executions>
<execution>
<goals>
<goal>update-theme</goal>
<goal>update-widgetset</goal>
<goal>compile</goal>
<!-- Comment out compile-theme goal to use on-the-fly theme compilation -->
<goal>compile-theme</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.1.3</version>
<executions>
<execution>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>target/generated-sources</outputDirectory>
<processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
[...]
</project>
我的Widgetset.gwt.xml如下所示：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.5.1//EN"
"http://google-web-toolkit.googlecode.com/svn/tags/2.5.1/distro-source/core/src/gwt-module.dtd">
<module>
<!--
Uncomment the following to compile the widgetset for one browser only.
Multiple browsers can be specified as a comma separated list. The supported user agents at the moment of writing were:
ie8,ie9,gecko1_8,safari,opera
The value gecko1_8 is used for Firefox and safari is used for webkit based browsers including Google Chrome.
-->
<!-- <set-property name="user.agent" value="safari"/> -->
<!--
To enable SuperDevMode, uncomment this line.
See https://vaadin.com/wiki/-/wiki/Main/Using%20SuperDevMode for more information and instructions.
-->
<!-- <set-configuration-property name="devModeRedirectEnabled" value="true" /> -->
<!--<inherits name="com.vaadin.DefaultWidgetSet"/>-->
<inherits name="com.vaadin.v7.Vaadin7WidgetSet" />
<inherits name="com.vaadin.addon.charts.Widgetset"/>
<inherits name="de.datenhahn.vaadin.componentrenderer.ComponentRendererWidgetSet"/>
<inherits name="com.vaadin.contextmenu.WidgetSet" />
<inherits name="org.vaadin.patrik.GridFastNavigation" />
</module>
有谁知道什么出错了？
最好的祝福
答案
通常NoSuchMethodError表示类路径问题，从某种意义上说，您在编写代码时在cp中拥有的库（并且您的IDE正在编译内联代码以检查错误）是与maven编译中的库不同的版本 - 时间cp。因此，在编译或运行代码时，不再能找到编写代码时可用的方法（请参阅late binding）。
在您的特定情况下，由于使用JDT版本的QueryDSL依赖项和使用引用另一个JDT版本的GWT插件的Vaadin maven插件，这很可能是间接后果。
作为一种解决方法，您可以从QueryDSL版本或Vaadin maven插件中获取JDT传递依赖关系，并尝试查看是否有效。
附：要查看究竟是谁正在引用JDT依赖项，您可以运行explicitly exclude
另一答案
这工作>非常感谢。我补充说：
mvn dependency:tree以上是关于我在Vaadin8迁移后需要Widgetset编译错误的主要内容，如果未能解决你的问题，请参考以下文章
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