將傳遞依賴行爲與xml-apis混淆

Question

在我的項目中，我依賴幾個外部庫，這些庫取決於xml-apis的各種版本。如果我使用maven-enforcer-pluginto fail if there are version conflicts我的構建失敗。

在我開始，我的打印應用程序運行的類路徑給出xml-apis:xml-apis:1.4.01

當我使maven-enforcer-plugin我得到這個，預計

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 

要解決此基礎上我讀過我應該將此添加到我的POM中

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

然後重新運行我的程序。它通過maven-enforcer-plugin檢查，但我的班級路徑現在說我正在運行xml-apis:xml-apis:1.0.b2。版本號是如何變老的？爲什麼我的版本被忽略？

添加這對我的POM，有或沒有<version>標籤沒有影響

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

諮詢dependency:tree -Dverbose=true -Dincludes=xml-apis列出了，這意味着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 

爲什麼我在dependencyManagment明確的版本被忽略？爲什麼設置會減少我的類路徑上的版本？我怎樣才能通過maven-enforcer-plugin與最新的xml-apis版本？

Answer 1

原來這不是maven問題，這是一個xml-api的問題。截至今天這是怎麼了xml-apis:xml-apis看起來Maven的中央

如果你仔細看2.0.2不是最新版本，1.4.01是！當其他人和他們的IDE認爲2大於1時，xml-apis會倒退。

這是非常混亂和不明顯，所以希望有人認爲這有用。