java – 使用xml-apis混淆传递依赖行为

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在我的项目中,我依赖于几个依赖于各种版本的xml-apis的外部库.如果我使用maven-enforcer-plugin to fail if there are version conflicts我的构建失败.

在开始之前,打印正在运行的应用程序的类路径给出了xml-apis：xml-apis：1.4.01

当我启用maven-enforcer-plugin时,我得到了这个,这是预期的

Dependency convergence error for xml-apis:xml-apis:1.3.04 paths to dependency are:

+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.bbraile:utd:1.0-SNAPSHOT
    +-xalan:xalan:2.7.2
      +-xalan:serializer:2.7.2
        +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.bbraile:utd:1.0-SNAPSHOT
    +-xml-apis:xml-apis:1.4.01
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.bbraile:utd:1.0-SNAPSHOT
    +-xerces:xercesImpl:2.11.0
      +-xml-apis:xml-apis:1.4.01
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-com.io7m.xom:xom:1.2.10
    +-xml-apis:xml-apis:1.3.03
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-bridge:1.7
      +-org.apache.xmlgraphics:batik-anim:1.7
        +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-bridge:1.7
      +-org.apache.xmlgraphics:batik-css:1.7
        +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-bridge:1.7
      +-org.apache.xmlgraphics:batik-ext:1.7
        +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-bridge:1.7
      +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-dom:1.7
      +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-gvt:1.7
      +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-svg-dom:1.7
      +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-org.apache.xmlgraphics:batik-svggen:1.7
      +-xml-apis:xml-apis:1.3.04
and
+-org.bbraile:bbraile:1.0-SNAPSHOT
  +-org.apache.xmlgraphics:batik-transcoder:1.7
    +-xml-apis:xml-apis:1.3.04

要根据我读过的内容修复此问题,我应该将其添加到我的POM中

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>xml-apis</groupId>
            <artifactId>xml-apis</artifactId>
            <version>2.0.2</version>
        </dependency>
    </dependencies>
</dependencyManagement>

然后重新运行我的程序.它通过了maven-enforcer-plugin检查但我的classpath现在说我正在运行xml-apis：xml-apis：1.0.b2.版本号是如何变老的？为什么我的版本会被忽略？

将此添加到我的POM,无论是否有< version>标签没有效果

<dependencies>
    <dependency>
        <groupId>xml-apis</groupId>
        <artifactId>xml-apis</artifactId>
        <version>2.0.2</version>
    </dependency>
</dependencies>

咨询依赖：树-Dverbose = true -Dincludes = xml-apis在下面给出,这意味着2.0.2

org.bbraile:bbraile:jar:1.0-SNAPSHOT
+- org.bbraile:utd:jar:1.0-SNAPSHOT:compile
|  +- xalan:xalan:jar:2.7.2:compile
|  |  \- xalan:serializer:jar:2.7.2:compile
|  |     \- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for conflict with 1.0.b2)
|  \- xerces:xercesImpl:jar:2.11.0:compile
|     \- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
+- com.io7m.xom:xom:jar:1.2.10:compile
|  \- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
+- org.apache.xmlgraphics:batik-transcoder:jar:1.7:compile
|  +- org.apache.xmlgraphics:batik-bridge:jar:1.7:compile
|  |  +- org.apache.xmlgraphics:batik-anim:jar:1.7:compile
|  |  |  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  |  |  \- (xml-apis:xml-apis-ext:jar:1.3.04:compile - omitted for duplicate)
|  |  +- org.apache.xmlgraphics:batik-css:jar:1.7:compile
|  |  |  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  |  |  \- (xml-apis:xml-apis-ext:jar:1.3.04:compile - omitted for duplicate)
|  |  +- org.apache.xmlgraphics:batik-ext:jar:1.7:compile
|  |  |  \- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  |  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  |  \- (xml-apis:xml-apis-ext:jar:1.3.04:compile - omitted for duplicate)
|  +- org.apache.xmlgraphics:batik-dom:jar:1.7:compile
|  |  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  |  \- (xml-apis:xml-apis-ext:jar:1.3.04:compile - omitted for duplicate)
|  +- org.apache.xmlgraphics:batik-gvt:jar:1.7:compile
|  |  \- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  +- org.apache.xmlgraphics:batik-svg-dom:jar:1.7:compile
|  |  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  |  \- (xml-apis:xml-apis-ext:jar:1.3.04:compile - omitted for duplicate)
|  +- org.apache.xmlgraphics:batik-svggen:jar:1.7:compile
|  |  \- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  +- (xml-apis:xml-apis:jar:2.0.2:compile - version managed from 1.0.b2; omitted for duplicate)
|  \- xml-apis:xml-apis-ext:jar:1.3.04:compile
\- xml-apis:xml-apis:jar:2.0.2:compile

为什么我的dependencyManagment中的显式版本被忽略了？为什么设置会减少我的类路径上的版本？如何使用最新的xml-apis版本传递maven-enforcer-plugin？

解决方法:

事实证明这不是一个maven问题,这是一个xml-api的问题.截至今天,这是xml-apis：xml-apis在Maven Central中的外观

如果你仔细看2.0.2不是最新版本,1.4.01就是！虽然其他人和他们的IDE认为2大于1,但xml-apis会倒退.

这是非常令人困惑和不明显的,所以希望有人发现这很有用.

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