maven - 运行 mvn 服务器时出现错误

Question

我使用 eclipse 配置->转换为 MVN 转换了一个常规的 java 项目 t maven，并在 POM 中添加了与 google api 相关的所有依赖项。当我使用 mvn jetty:run 时，我不断收到以下错误。请让我知道如何解决这个问题。

[INFO] Building glass-qrlens 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-jetty-plugin:6.1.26:run (default-cli) > test-compile @ glass-qrlens >>>
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ glass-qrlens ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\sridharg\git\glass-qrlens\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ glass-qrlens ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ glass-qrlens ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\sridharg\git\glass-qrlens\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ glass-qrlens ---
[INFO] No sources to compile
[INFO]
[INFO] <<< maven-jetty-plugin:6.1.26:run (default-cli) < test-compile @ glass-qrlens <<<
[INFO]
[INFO] --- maven-jetty-plugin:6.1.26:run (default-cli) @ glass-qrlens ---
[INFO] Configuring Jetty for project: glass-qrlens
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.843 s
[INFO] Finished at: 2014-10-25T15:49:55-05:00
[INFO] Final Memory: 7M/18M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.mortbay.jetty:maven-jetty-plugin:6.1.26:run (default-cli) on project glass-qrlens: Webapp source directory C:\Users\sridharg\git\glass-
qrlens\src\main\webapp does not exist -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.mortbay.jetty:maven-jetty-plugin:6.1.26:run (default-cli) on project glass-qrlens: Weba
pp source directory C:\Users\sridharg\git\glass-qrlens\src\main\webapp does not exist
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
        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:120)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        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.MojoExecutionException: Webapp source directory C:\Users\sridharg\git\glass-qrlens\src\main\webapp does not exist
        at org.mortbay.jetty.plugin.AbstractJettyRunMojo.checkPomConfiguration(AbstractJettyRunMojo.java:228)
        at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:395)
        at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
        at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
        ... 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 read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

谢谢， 斯里达尔·G

Answer 1

Maven Web 项目默认使用目录 src/main/webapp 作为 Web 资源。

jetty-maven-plugin 不知道您正在使用不同的目录，因此您会收到此错误。

你可以使用类似的东西

<plugin>
    <groupId>org.eclipse.jetty</groupId>
    <artifactId>jetty-maven-plugin</artifactId>
    <version>9.2.3.v20140905</version>
    <configuration>
        <webAppSourceDirectory>${project.basedir}/WebContent/</webAppSourceDirectory>             
    <configuration>
</plugin>

使 jetty-maven-plugin 使用不同的 webapp 目录。

Jetty 现在是一个 Eclipse 项目，我在答案中使用了相同的项目，但您当前使用的旧项目确实支持 webAppSourceDirectory 配置。

了解更多信息，请访问Eclipse Documentation