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在 Eclipse 的 spring-boot 项目中使用 Maven “无法找到主类”

社区维基
1
新手上路，请多包涵

我非常绝望，因为我不再能够编译我的 Maven 项目。我有一个逻辑项目分为 7 个 maven 模块，到目前为止编译得很好，但是今天我介绍了一个功能，我不小心生成了一个循环的 maven 依赖项。因此我重构了代码并消除了循环依赖。自从我更新了 pom 文件以反映修复后，我的项目不再构建。当我使用“-X clean install”运行 maven 时，我得到以下 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：

 <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>

我需要做什么来解决这个问题？如果您需要更多信息，请告诉我。先感谢您。

原文由 Alex 发布，翻译遵循 CC BY-SA 4.0 许可协议

Stack Overflow 翻译eclipsemavenspring-boot
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2 个回答
得票最新
社区维基
1
✓ 已被采纳

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 ，如下所示：

  <build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

然后我只在使用它的模块中添加了插件（在 plugin 部分）。之后项目已成功构建。

原文由 Vladimir Lebedev 发布，翻译遵循 CC BY-SA 4.0 许可协议

社区维基
1

你应该有这个

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

仅在您要运行的那些模块中，而不是在父 pom.xml 中。

原文由 Pavel Grigorev 发布，翻译遵循 CC BY-SA 3.0 许可协议

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