使用tomcat7-maven-plugin时，Maven无法找到tomcat7目标。

Question

当我试图使用maven tomcat插件将我的webapp部署设置到tomcat 7时，我遇到了一个问题。

settings.xml：

<server>
  <id>server</id>
  <username>admin</username>
  <password>password</password>
</server>

pom.xml：

<plugin>
  <groupId>org.apache.tomcat.maven</groupId>
  <artifactId>tomcat7-maven-plugin</artifactId>
  <version>2.2</version>
  <configuration>
    <server>server</server>
    <url>http://localhost:8080/manager/text</url>
    <path>/myapp</path>
  </configuration>
</plugin>

当我开始输入mvn tom<tab>时，autocomplete建议我只输入mvn tomcat:。

mvn tomcat:list的输出是：

[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'tomcat'.
[INFO] ------------------------------------------------------------------------
[INFO] Building myapp
[INFO]    task-segment: [tomcat:list]
[INFO] ------------------------------------------------------------------------
[INFO] [tomcat:list {execution: default-cli}]
[INFO] Listing applications at http://localhost:8080/manager
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Cannot invoke Tomcat manager

Embedded error: http://localhost:8080/manager/list
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Sun Dec 22 21:37:08 MSK 2013
[INFO] Final Memory: 13M/211M
[INFO] ------------------------------------------------------------------------

看起来tomcat6-maven插件实际上正在使用中。

mvn tomcat7:list的输出是：

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Required goal not found: tomcat7:list in org.apache.tomcat.maven:tomcat7-maven-plugin:2.2
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Sun Dec 22 21:43:41 MSK 2013
[INFO] Final Memory: 7M/116M
[INFO] ------------------------------------------------------------------------

我使用的是Ubuntu13.10，所有软件都是通过存储库安装的。

Answer 1

据我所知，tomcat7的某些目标还没有实现，mvn tomcat7:list就是其中之一。mvn tomcat6:list可用于tomcat6 mojo。