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java - Maven exec 插件主类丢失

转载 作者:塔克拉玛干 更新时间:2023-11-03 04:49:44 26 4
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我正在尝试完成 Hibernate 教程,但在运行命令时卡住了

C:\Users\Eyal\workspace\FirstHibernateTutorial>mvn exec:java -Dexec.mainclass="o
rg.hsqldb.Server" -Dexec.args="-database.O file:target/data/tutorial" -e

并得到这些错误。

[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for
org.hibernate.tutorials:hibernate-tutorial:jar:1.0.0-SNAPSHOT
[WARNING] The expression ${artifactId} is deprecated. Please use ${project.artif
actId} instead.
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten t
he stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support buildin
g such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building First Hibernate Tutorial 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> exec-maven-plugin:1.2:java (default-cli) @ hibernate-tutorial >>>
[INFO]
[INFO] <<< exec-maven-plugin:1.2:java (default-cli) @ hibernate-tutorial <<<
[INFO]
[INFO] --- exec-maven-plugin:1.2:java (default-cli) @ hibernate-tutorial ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.964s
[INFO] Finished at: Thu Apr 21 18:31:10 IDT 2011
[INFO] Final Memory: 4M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2:java (def
ault-cli) on project hibernate-tutorial: The parameters 'mainClass' for goal org
.codehaus.mojo:exec-maven-plugin:1.2:java are missing or invalid -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal o
rg.codehaus.mojo:exec-maven-plugin:1.2:java (default-cli) on project hibernate-t
utorial: The parameters 'mainClass' for goal org.codehaus.mojo:exec-maven-plugin
:1.2:java are missing or invalid
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:221)
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.buildProje
ct(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
ct(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBu
ild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycl
eStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
cher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
a:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
uncher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
352)
Caused by: org.apache.maven.plugin.PluginParameterException: The parameters 'mai
nClass' for goal org.codehaus.mojo:exec-maven-plugin:1.2:java are missing or inv
alid
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.populatePl
uginFields(DefaultMavenPluginManager.java:576)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfigu
redMojo(DefaultMavenPluginManager.java:529)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:92)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:209)
... 19 more
[ERROR]
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginParamete
rException

我确实更改了 pom 文件中的一件事。我添加了依赖项的版本。这是 pom.xml。我更改了它,因为没有它,我会收到有关缺少版本规范的错误。

    <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>org.hibernate.tutorials</groupId>
<artifactId>hibernate-tutorial</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>First Hibernate Tutorial</name>

<build>
<!-- we dont want the version to be part of the generated war file name -->
<finalName>${artifactId}</finalName>
</build>

<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.3.1.GA</version>
</dependency>

<!-- Because this is a web app, we also have a dependency on the servlet api. -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>[2.4,)</version>
</dependency>

<!-- Hibernate uses slf4j for logging, for our purposes here use the simple backend -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.5.6</version>
</dependency>

<!-- Hibernate gives you a choice of bytecode providers between cglib and javassist -->
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>[3.0,)</version>
</dependency>
</dependencies>
</project>

我认为主要问题在行中

目标组织的参数“mainClass”
.codehaus.mojo:exec-maven-plugin:1.2:java 丢失或无效 -> [帮助 1]

为什么 mainClass 无效?你能看到我看不到的东西吗?

编辑:

好的,我将“mainclass”更改为“mainClass”,它给我这个关于找不到“org.hsqldb.Server”的错误。我将 hsqldb.jar 添加到 Eclipse 的引用库中,但它仍然给我同样的错误。

这是堆栈打印:

C:\Users\Eyal\workspace\FirstHibernateTutorial>mvn exec:java -Dexec.mainClass="o
rg.hsqldb.Server" -Dexec.args="-database.O file:target/data/tutorial" -e
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for
org.hibernate.tutorials:hibernate-tutorial:jar:1.0.0-SNAPSHOT
[WARNING] The expression ${artifactId} is deprecated. Please use ${project.artif
actId} instead.
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten t
he stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support buildin
g such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building First Hibernate Tutorial 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> exec-maven-plugin:1.2:java (default-cli) @ hibernate-tutorial >>>
[INFO]
[INFO] <<< exec-maven-plugin:1.2:java (default-cli) @ hibernate-tutorial <<<
[INFO]
[INFO] --- exec-maven-plugin:1.2:java (default-cli) @ hibernate-tutorial ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.106s
[INFO] Finished at: Sat Apr 23 10:46:09 IDT 2011
[INFO] Final Memory: 4M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2:java (def
ault-cli) on project hibernate-tutorial: An exception occured while executing th
e Java class. org.hsqldb.Server -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal o
rg.codehaus.mojo:exec-maven-plugin:1.2:java (default-cli) on project hibernate-t
utorial: An exception occured while executing the Java class. org.hsqldb.Server
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:217)
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.buildProje
ct(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProje
ct(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBu
ild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycl
eStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
cher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
a:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
uncher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
352)
Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured
while executing the Java class. org.hsqldb.Server
at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:346)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:209)
... 19 more
Caused by: java.lang.ClassNotFoundException: org.hsqldb.Server
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:284)
at java.lang.Thread.run(Thread.java:662)
[ERROR]
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionE
xception
C:\Users\Eyal\workspace\FirstHibernateTutorial>

最佳答案

应该是mainClass 而不是mainclass

-Dexec.mainClass="org.hsqldb.Server"

阅读更多相关信息 herehere .

并且 hsqldb 应该在您的 maven 依赖项中:

<dependency> 
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.0.0</version>
</dependency>

关于java - Maven exec 插件主类丢失,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5746540/

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