Question

我的（简单）war项目在命令行使用mvn：package构建正常，但无法使用maven通过sonatype插件在eclipse中构建。我得到的错误是：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1-alpha-1:war (default-war) on project shoploops_webapp: Execution default-war of goal org.apache.maven.plugins:maven-war-plugin:2.1-alpha-1:war failed: dependenciesInfo : dependenciesInfo
---- Debugging information ----
message             : dependenciesInfo : dependenciesInfo
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : dependenciesInfo : dependenciesInfo
class               : org.apache.maven.plugin.war.util.WebappStructure
required-type       : org.apache.maven.plugin.war.util.WebappStructure
path                : /webapp-structure/dependenciesInfo
line number         : 14

我真的有两个问题 1）如何修复此错误？ 2）为什么mvn：package在命令行工作正常，但不能通过插件工作？它们在工作方式上有什么区别，这样会发生这样的错误？

非常感谢！

编辑：在调试模式下运行堆栈跟踪：

Caused by: com.thoughtworks.xstream.converters.ConversionException: dependenciesInfo : dependenciesInfo
---- Debugging information ----
message             : dependenciesInfo : dependenciesInfo
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : dependenciesInfo : dependenciesInfo
class               : org.apache.maven.plugin.war.util.WebappStructure
required-type       : org.apache.maven.plugin.war.util.WebappStructure
path                : /webapp-structure/dependenciesInfo
line number         : 14
-------------------------------
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:63)
    at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:45)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:46)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:117)
    at com.thoughtworks.xstream.core.ReferenceByXPathMarshallingStrategy.unmarshal(ReferenceByXPathMarshallingStrategy.java:29)
    at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:846)
    at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:833)
    at com.thoughtworks.xstream.XStream.fromXML(XStream.java:781)
    at org.apache.maven.plugin.war.util.WebappStructureSerializer.fromXml(WebappStructureSerializer.java:48)
    at org.apache.maven.plugin.war.AbstractWarMojo.buildWebapp(AbstractWarMojo.java:346)
    at org.apache.maven.plugin.war.AbstractWarMojo.buildExplodedWebapp(AbstractWarMojo.java:317)
    at org.apache.maven.plugin.war.WarMojo.performPackaging(WarMojo.java:166)
    at org.apache.maven.plugin.war.WarMojo.execute(WarMojo.java:130)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:105)
    ... 15 more
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: dependenciesInfo : dependenciesInfo
    at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:49)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:76)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:60)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:76)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:26)
    at com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:34)
    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.determineType(AbstractReflectionConverter.java:296)
    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:178)
    at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:125)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:56)
    ... 28 more

Answer 1

为什么mvn:package在命令行运行正常，但不能通过插件运行？它们在工作方式上有什么区别，这样会发生这样的错误？

简短版本是m2eclipse 不使用您在命令行上使用的相同版本，除非您告诉他这样做（这将是我的建议）。如果你想知道，m2eclipse使用嵌入式Maven 3（Maven Embedder 3.0.0.200912160759）。

如何解决此错误？

实际上，问题记录在http://jira.codehaus.org/browse/MWAR-187中，它提供了几种解决方法。

将maven-war-plugin降级为2.1-alpha-1

通过修改maven-war-plugin配置来停用缓存

<configuration>
  <useCache>false</useCache>
</configuration>

我认为将M2Eclipse配置为不使用Maven Embedder（但是你在CLI上使用的版本）也可以解决问题，这是我的建议。您可以在窗口＆gt;中找到此设置。偏好＆gt;行家

Answer 2

我遇到了同样的问题但做了mvn install。在命令行中工作正常但从Eclipse失败。

实际发生的是显然我的webapp-cache.xml文件已损坏。我解决了运行mvn clean install的问题。

Answer 3

您需要转到preferences->maven->installation并选择外部安装。我正在使用springource工具套件。但是maven配置路径在其他日食种类中应该是相同的。

eclipse / maven / sonatype war build在命令行工作但不在eclipse中工作

3 个答案: