“无法找到主要班级"；在Eclipse的spring-boot项目中使用Maven [英] "Unable to find main class" with Maven on spring-boot project in Eclipse
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问题描述
我非常绝望，因为我无法再编译我的Maven项目.我有一个逻辑项目，分为7个maven模块，到目前为止，这些模块可以很好地进行编译，但是今天，我引入了一项功能，即不小心生成了循环maven依赖项.因此，我重构了代码并消除了循环依赖.自从我更新pom文件以反映该修复程序以来，我的项目就不再构建.当我使用"-X clean install"运行maven时，得到以下java.lang.IllegalStateException:无法找到主类
I am pretty desperate since I no longer can compile my Maven projects. I have one logical project split into 7 maven modules which so far compiled fine, but today I introduced a feature, whereby I accidentally generated a circular maven dependency. Therefore I refactored the code and eliminated the circular dependency. Ever since I updated the pom files to reflect the fix my project doesn't build anymore. When I run maven with "-X clean install" I get the following java.lang.IllegalStateException: Unable to find main class
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] agiletunes-parent
[INFO] agiletunes-util
[INFO] agiletunes-security-common
[INFO] agiletunes-marketing-persistence
[INFO] agiletunes-common-ui
[INFO] agiletunes-security-client
[INFO] agiletunes-marketing-application
[INFO] agiletunes-security-server
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building agiletunes-parent 0.0.1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- spring-boot-maven-plugin:1.5.2.RELEASE:repackage (default) @ agiletunes-parent ---
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) @ agiletunes-parent ---
[INFO] Installing C:\Users\Alexander\Documents\Development\agileTunes\agiletunes-parent\pom.xml to C:\Users\Alexander\Documents\Development\mavenArtifacts\com\agiletunes\agiletunes-parent\0.0.1\agiletunes-parent-0.0.1.pom
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building agiletunes-util 0.0.1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ agiletunes-util ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\Alexander\Documents\Development\agileTunes\agiletunes-util\src\main\resources
[INFO] skip non existing resourceDirectory C:\Users\Alexander\Documents\Development\agileTunes\agiletunes-util\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ agiletunes-util ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ agiletunes-util ---
[INFO] Not copying test resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ agiletunes-util ---
[INFO] Not compiling test sources
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ agiletunes-util ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ agiletunes-util ---
[INFO]
[INFO] --- spring-boot-maven-plugin:1.5.2.RELEASE:repackage (default) @ agiletunes-util ---
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] agiletunes-parent .................................. SUCCESS [ 1.492 s]
[INFO] agiletunes-util .................................... FAILURE [ 1.095 s]
[INFO] agiletunes-security-common ......................... SKIPPED
[INFO] agiletunes-marketing-persistence ................... SKIPPED
[INFO] agiletunes-common-ui ............................... SKIPPED
[INFO] agiletunes-security-client ......................... SKIPPED
[INFO] agiletunes-marketing-application ................... SKIPPED
[INFO] agiletunes-security-server ......................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.674 s
[INFO] Finished at: 2017-03-21T21:53:04+01:00
[INFO] Final Memory: 31M/309M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.5.2.RELEASE:repackage (default) on project agiletunes-util: Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.5.2.RELEASE:repackage failed: Unable to find main class -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.5.2.RELEASE:repackage (default) on project agiletunes-util: Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.5.2.RELEASE:repackage failed: Unable to find main class
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.5.2.RELEASE:repackage failed: Unable to find main class
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
... 20 more
Caused by: java.lang.IllegalStateException: Unable to find main class
at org.springframework.boot.loader.tools.Repackager.buildManifest(Repackager.java:354)
at org.springframework.boot.loader.tools.Repackager.repackage(Repackager.java:273)
at org.springframework.boot.loader.tools.Repackager.repackage(Repackager.java:258)
at org.springframework.boot.loader.tools.Repackager.repackage(Repackager.java:190)
at org.springframework.boot.maven.RepackageMojo.repackage(RepackageMojo.java:212)
at org.springframework.boot.maven.RepackageMojo.execute(RepackageMojo.java:199)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
[ERROR]
...
这是我的Maven父项目的pom.xml:
This is the pom.xml of my maven parent project:
<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>
<groupId>com.agiletunes</groupId>
<artifactId>agiletunes-parent</artifactId>
<version>0.0.1</version>
<packaging>pom</packaging>
<name>agiletunes-parent</name>
<description>Maven parent project of agiletunes</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath></relativePath>
</parent>
<modules>
<module>../agiletunes-common-ui</module>
<module>../agiletunes-marketing-application</module>
<module>../agiletunes-marketing-persistence</module>
<module>../agiletunes-security-client</module>
<module>../agiletunes-security-common</module>
<module>../agiletunes-security-server</module>
<module>../agiletunes-util</module>
</modules>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- Java -->
<java.version>1.8</java.version>
<!-- Spring -->
<spring.boot.version>1.5.2.RELEASE</spring.boot.version>
<!-- persistence -->
<mysql-connector-java.version>6.0.5</mysql-connector-java.version>
<!-- util -->
<guava.version>17.0</guava.version>
<!-- testing -->
<mockito.version>1.9.5</mockito.version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version><!--$NO-MVN-MAN-VER$ -->
<scope>runtime</scope>
</dependency>
<!-- utils -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<!-- unit test framework -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
要解决此问题，我需要做什么?如果您需要其他信息，请告诉我.预先谢谢你.
What do I need to do, to fix this? Please let me know, should you need additional information. Thank you in advance.
推荐答案
仅适用于面临类似问题的人.我在 pluginManagement 部分的父POM中添加了 spring-boot-maven-plugin :
Just for someone who faced with similar problem. I added spring-boot-maven-plugin in parent POM in section pluginManagement section like this:
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</pluginManagement>
</build>
然后，我仅在使用插件的模块中添加插件(在 plugin 部分).此后，该项目已成功构建.
Then I added the plugin only in the modules using it (in plugin section).The project has been successfully built after that.
这篇关于“无法找到主要班级"；在Eclipse的spring-boot项目中使用Maven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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