來自Maven Central的ehcache依賴關系出現問題

Question

我正在嘗試在具有空.m2 /存儲庫目錄的新筆記本電腦上構建項目。 我收到以下錯誤：

BUILD FAILED
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:635: The following error occurred while executing this line:
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:1437: The following error occurred while executing this line:
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:1372: The following error occurred while executing this line:
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:1315: The following error occurred while executing this line:
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:1318: The following error occurred while executing this line:
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:1375: The following error occurred while executing this line:
/home/awills/Dropbox/Jasig/portal/uPortal/build.xml:1227: Unable to resolve artifact: Unable to get dependency information: Unable to read the metadata file for artifact 'net.sf.ehcache:ehcache-web:jar': Cannot find parent: net.sf.ehcache:ehcache-web-parent for project: null:ehcache-web:jar:null for project null:ehcache-web:jar:null
  net.sf.ehcache:ehcache-web:jar:2.0.4

from the specified remote repositories:
  central (http://repo1.maven.org/maven2),
  sonatype-nexus-snapshots (https://oss.sonatype.org/content/repositories/snapshots),
  apache-snapshots (http://repository.apache.org/snapshots)

Path to dependency: 
    1) org.jasig.portal:uportal-war:war:4.1.0-SNAPSHOT
    2) org.jasig.resourceserver:resource-server-utils:jar:1.0.38

該項目已經成熟，並且這種依賴關系最近沒有改變。 該構建最近正在運行。

我不了解有關for project: null:ehcache-web:jar:null它在哪里獲取null？

net.sf.ehcache：ehcache-web：2.0.4 pom開始如下...

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>net.sf.ehcache</groupId>
    <artifactId>ehcache-web-parent</artifactId>
    <version>2.0.4</version>
  </parent>
  <name>Ehcache Web Filters</name>
  <artifactId>ehcache-web</artifactId>
  <packaging>jar</packaging>
  <description><![CDATA[Web caching filters.]]> </description>

  <licenses>
    <license>
      <name>The Apache Software License, Version 2.0</name>
      <url>http://ehcache.org/license.html</url>
    </license>
  </licenses>

net.sf.ehcache：ehcache-web-parent：2.0.4 pom開始如下...

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <properties>
        <forgeTags>Integration Module</forgeTags>
        <Bundle-RequiredExecutionEnvironment>J2SE-1.5</Bundle-RequiredExecutionEnvironment>
    </properties>

    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache-parent</artifactId>
        <version>2.3</version>
    </parent>
    <name>Ehcache Web Filters Parent</name>
    <artifactId>ehcache-web-parent</artifactId>
    <packaging>pom</packaging>
    <version>2.0.4</version>
    <description>parent pom for web module</description>

Answer 1

似乎有一個父pom，並且在子pom中定義了存儲庫（在這種情況下為ehcache-web），maven嘗試僅從子pom中定義的存儲庫中查找父依賴項。精通中央。

在ehcache-web pom中，您有以下內容：

<repositories>
  <repository>
    <id>sourceforge-snapshots</id>
    <name>Sourceforge Snapshot Repository</name>
    <url>http://oss.sonatype.org/content/repositories/sourceforge-snapshots</url>
  </repository>
</repositories>

但是由於父級不再是快照，並且已被移至Maven中央，因此找不到該父級。 我通過從本地pom文件（〜/ .m2 / repository / net / sf / ehcache / ehcache-ehcache-web / 2.0.4 / ehcache-web-2.0.4.pom）中刪除存儲庫元素來解決此問題。

我還必須刪除存儲的ehcache-web-parent pom文件，該文件只是重定向。

我在網上發現了很少的有關此信息的信息，但也許這些信息對您有所幫助： https : //issues.sonatype.org/browse/MVNCENTRAL-468 http://jira.codehaus.org/browse/MANTTASKS-246