构建OpenCMIS hello world失败，原因是无法找到父级: org.apache.chemistry.opencmis:chemistry-opencmis

Question

我正在尝试为OpenCMIS构建hello world，我在这里找到了文档：

http://chemistry.apache.org/java/developing/guide.html

我是maven的新手，对这个错误感到有点困惑。有没有其他人遇到过这种情况？你的解决办法是什么。下面是尝试构建的完整输出。根据我在文档中的理解，这应该是为了构建和运行hello world。

james@jamesp:~/workspace/chemistry-opencmis-hello$ mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null

Reason: Cannot find parent: org.apache.chemistry.opencmis:chemistry-opencmis for project: org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null for project org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null


[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.reactor.MavenExecutionException: Cannot find parent: org.apache.chemistry.opencmis:chemistry-opencmis for project: org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null for project org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null
    at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:404)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:272)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
    at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
    at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
    at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.project.ProjectBuildingException: Cannot find parent: org.apache.chemistry.opencmis:chemistry-opencmis for project: org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null for project org.apache.chemistry.opencmis:chemistry-opencmis-hello:jar:null
    at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultMavenProjectBuilder.java:1396)
    at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:823)
    at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInternal(DefaultMavenProjectBuilder.java:508)
    at org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjectBuilder.java:200)
    at org.apache.maven.DefaultMaven.getProject(DefaultMaven.java:604)
    at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:487)
    at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:391)
    ... 12 more
Caused by: org.apache.maven.project.ProjectBuildingException: POM 'org.apache.chemistry.opencmis:chemistry-opencmis' not found in repository: Unable to download the artifact from any repository

  org.apache.chemistry.opencmis:chemistry-opencmis:pom:0.5.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2)

 for project org.apache.chemistry.opencmis:chemistry-opencmis
    at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:605)
    at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultMavenProjectBuilder.java:1392)
    ... 18 more
Caused by: org.apache.maven.artifact.resolver.ArtifactNotFoundException: Unable to download the artifact from any repository

  org.apache.chemistry.opencmis:chemistry-opencmis:pom:0.5.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2)


    at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:228)
    at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:90)
    at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:558)
    ... 19 more
Caused by: org.apache.maven.wagon.ResourceDoesNotExistException: Unable to download the artifact from any repository
    at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:404)
    at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:216)
    ... 21 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Tue Jul 26 10:05:51 MDT 2011
[INFO] Final Memory: 1M/52M
[INFO] ------------------------------------------------------------------------

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- Licensed under the Apache License, Version 2.0 (the "License"); you 
 may not use this file except in compliance with the License. You may obtain 
 a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless 
 required by applicable law or agreed to in writing, software distributed 
 under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES 
 OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 the specific language governing permissions and limitations under the License. -->

<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>org.apache.chemistry.opencmis</groupId>
        <artifactId>chemistry-opencmis</artifactId>
        <version>0.5.0-SNAPSHOT</version>
        <relativePath>../../pom.xml</relativePath>
    </parent>

    <!-- Project Information -->

    <groupId>org.apache.chemistry.opencmis</groupId>
    <artifactId>chemistry-opencmis-hello</artifactId>
    <name>Apache Chemistry OpenCMIS Hello World Example</name>
    <packaging>jar</packaging>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.1.1</version>
                <executions>
                    <execution>
                    <phase>test</phase>
                    <goals>
                        <goal>java</goal>
                    </goals>
                    </execution>
                </executions>
                <configuration>
                    <mainClass>org.apache.chemistry.opencmis.doc.Hello</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>${project.groupId}</groupId>
            <artifactId>chemistry-opencmis-client-impl</artifactId>
            <version>${project.version}</version>
        </dependency>
    </dependencies>

</project>

Answer 1

正如@Gagravarr所指出的，在maven central中，化学-opencmis的0.5快照版本是not available，因此出现了错误。您应该尝试使用0.4.0版本