Required extension "ant" 和 "qdox" not found.

Attributes 架包下载地址：???http://commons.apache.org/attributes/

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错误：

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解决方法：
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打开META-INF.MF可以看到配置信息
Manifest-Version: 1.0Ant-Version: Apache Ant 1.5.3 Created-By: Apache MavenBuilt-By: henPackage: org.apache.commons.attributesBuild-Jdk: 1.4.2_05Extension-Name: commons-attributes-apiSpecification-Title: Client API for Jakarta Commons Attributes.Specification-Vendor: The Apache Software FoundationImplementation-Title: org.apache.commons.attributesImplementation-Vendor: The Apache Software FoundationImplementation-Version: 2.2Implementation-Vendor-Id: org.apacheX-Compile-Source-JDK: 1.4X-Compile-Target-JDK: 1.4
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保存文件重新部署
此时可能不会替换Tomcat中的jar包请删除Tomcat中的文件重新部署即可解决问题
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