maven-2 - 使用 Maven 通过 SCP 上传文件失败

Question

我尝试使用 scp 将 maven 创建的耳朵上传到应用程序服务器。

当我试图跑

mvn wagon:upload-single

但我收到以下错误:

[ERROR] Failed to execute goal org.codehaus.mojo:wagon-maven-plugin:1.0-beta-3:upload-single (default-cli) on project de.volkswagen.dps.ear: Unable to create a Wagon instance for null: url can not be null -> [Help 1]org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:wagon-maven-plugin:1.0-beta-3:upload-single (default-cli) on project de.volkswagen.dps.ear: Unable to create a Wagon instance for null    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:585)    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:324)    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:247)    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:104)    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:427)    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:157)    at org.apache.maven.cli.MavenCli.main(MavenCli.java:121)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)    at java.lang.reflect.Method.invoke(Method.java:597)    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)Caused by: org.apache.maven.plugin.MojoExecutionException: Unable to create a Wagon instance for null    at org.codehaus.mojo.wagon.AbstractWagonMojo.createWagon(AbstractWagonMojo.java:83)    at org.codehaus.mojo.wagon.AbstractSingleWagonMojo.execute(AbstractSingleWagonMojo.java:62)    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:105)    at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:577)    ... 14 moreCaused by: java.lang.NullPointerException: url can not be null    at org.apache.maven.wagon.repository.Repository.(Repository.java:88)    at org.codehaus.mojo.wagon.shared.WagonUtils.createWagon(WagonUtils.java:51)    at org.codehaus.mojo.wagon.AbstractWagonMojo.createWagon(AbstractWagonMojo.java:79)    ... 17 more

I tried to add this to the pom, but it doesn't seem to have any effect:

I added the following to the pom.xml:

...
    <extensions>
        <extension>
            <groupId>org.apache.maven.wagon</groupId>
            <artifactId>wagon-ssh</artifactId>
            <version>1.0-beta-6</version>
        </extension>
    </extensions>

    <plugins>

        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>wagon-maven-plugin</artifactId>
            <version>1.0-beta-3</version>
            <executions>
                <execution>
                    <id>upload-ear</id>
                    <phase>deploy</phase>
                    <goals>
                        <goal>upload</goal>
                    </goals>
                    <configuration>
                        <fromFile>${project.build.directory}/${project.build.finalName}.ear</fromFile> 
                        <url>scp://servername/</url>
                        <toDir>.</toDir>
                    </configuration>
                </execution>
            </executions>
        </plugin>
....

任何人都可以解释我如何使这项工作？

Answer 1

您当前的配置遵循 Usage 中给出的示例。页并且是正确的。但是，在本例中，configuration元素在 execution 中声明因此仅适用于 这个特别 execution .

所以当你调用mvn wagon:upload-single在命令行上，configuration没有“使用”，确实没有 url配置的参数。

如果你想从命令行调用插件，可以使用-Durl=foo在命令行传递参数。依此类推或添加“全局”configuration元素:

<build>
  <extensions>
    <extension>
      <groupId>org.apache.maven.wagon</groupId>
      <artifactId>wagon-ssh</artifactId>
      <version>1.0-beta-6</version>
    </extension>
  </extensions>  

  <plugins>   
    <plugin>
      <groupId>org.codehaus.mojo</groupId>
      <artifactId>wagon-maven-plugin</artifactId>
      <version>1.0-beta-3</version>
      <configuration>
        <fromFile>${project.build.directory}/${project.build.finalName}.ear</fromFile> 
        <url>scp://servername/</url>
        <toDir>.</toDir>
      </configuration>
      ...
    </plugin>
    ...
  </plugins>
  ...
</build>