java - Grails 新项目无法解决依赖关系

Question

在 Windows 上安装了最新版本的 grails 2.4.2(java 1.7)，创建了一个新项目。运行应用程序时，它无法解析依赖项。我不支持代理。在堆栈跟踪下方:

Error |
Resolve error obtaining dependencies: Failed to read artifact descriptor for xalan:serializer:jar:2.7.1 (NOTE: Stack trace has been filtered. Use --verbose to see entire trace.)
org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for xalan:serializer:jar:2.7.1
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:370)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:217)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor(DefaultDependencyCollector.java:525)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult(DefaultDependencyCollector.java:509)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:409)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:254)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:316)
    at grails.util.BuildSettings.doResolve(BuildSettings.groovy:514)
    at grails.util.BuildSettings.doResolve(BuildSettings.groovy)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
    at grails.util.BuildSettings$_getDefaultBuildDependencies_closure19.doCall(BuildSettings.groovy:775)
    at grails.util.BuildSettings$_getDefaultBuildDependencies_closure19.doCall(BuildSettings.groovy)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
    at grails.util.BuildSettings.getDefaultBuildDependencies(BuildSettings.groovy:769)
    at grails.util.BuildSettings.getBuildDependencies(BuildSettings.groovy:674)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Could not transfer artifact org.apache:apache:pom:4 from/to grailsCentral (http://repo.grails.org/grails/plugins): http://grails.org
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:126)
    at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.java:817)
    at org.apache.maven.model.building.DefaultModelBuilder.readParent(DefaultModelBuilder.java:669)
    at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:307)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:361)
    ... 19 more
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Could not transfer artifact org.apache:apache:pom:4 from/to grailsCentral (http://repo.grails.org/grails/plugins): http://grails.org
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:122)
    ... 23 more
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact org.apache:apache:pom:4 from/to grailsCentral (http://repo.grails.org/grails/plugins): http://grails.org
    at org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:43)
    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:355)
    at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:581)
    at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:249)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:520)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:421)
    ... 26 more
Caused by: java.net.UnknownHostException: http://grails.org
    at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:278)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:162)
    at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:643)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
    at org.apache.http.impl.client.DecompressingHttpClient.execute(DecompressingHttpClient.java:137)
    at org.eclipse.aether.transport.http.HttpTransporter.execute(HttpTransporter.java:279)
    at org.eclipse.aether.transport.http.HttpTransporter.implGet(HttpTransporter.java:235)
    at org.eclipse.aether.spi.connector.transport.AbstractTransporter.get(AbstractTransporter.java:59)
    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.runTask(BasicRepositoryConnector.java:447)
    at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:350)
    ... 31 more

Error |
Resolve error obtaining dependencies: Failed to read artifact descriptor for xalan:serializer:jar:2.7.1
Error |
Required Grails build dependencies were not found. This is normally due to internet connectivity issues (such as a misconfigured proxy) or missing repositories in grails-app/conf/BuildConfig.groovy. Please verify your configuration to continue.

我的构建配置:

grails.servlet.version = "3.0" // Change depending on target container compliance (2.5 or 3.0)
grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.work.dir = "target/work"
grails.project.target.level = 1.7
grails.project.source.level = 1.7
//grails.project.war.file = "target/${appName}-${appVersion}.war"
grails.project.plugins.dir="./plugins"

grails.project.fork = [
    // configure settings for compilation JVM, note that if you alter the Groovy version forked compilation is required
    //  compile: [maxMemory: 256, minMemory: 64, debug: false, maxPerm: 256, daemon:true],

    // configure settings for the test-app JVM, uses the daemon by default
    test: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, daemon:true],
    // configure settings for the run-app JVM
    run: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, forkReserve:false],
    // configure settings for the run-war JVM
    war: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, forkReserve:false],
    // configure settings for the Console UI JVM
    console: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256]
]

grails.project.dependency.resolver = "maven" // or ivy
grails.project.dependency.resolution = {
    // inherit Grails' default dependencies
    inherits("global") {
        // specify dependency exclusions here; for example, uncomment this to disable ehcache:
        // excludes 'ehcache'
    }
    log "error" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
    checksums true // Whether to verify checksums on resolve
    legacyResolve true // whether to do a secondary resolve on plugin installation, not advised and here for backwards compatibility

    repositories {
        inherits true // Whether to inherit repository definitions from plugins

        grailsPlugins()
        grailsHome()
        mavenLocal()
        grailsCentral()
        mavenCentral()
        // uncomment these (or add new ones) to enable remote dependency resolution from public Maven repositories
        mavenRepo "http://repository.codehaus.org"
        mavenRepo "http://download.java.net/maven/2/"
        mavenRepo "http://repository.jboss.com/maven2/"
    }

    dependencies {
        // specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
        // runtime 'mysql:mysql-connector-java:5.1.29'
        runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
        test "org.grails:grails-datastore-test-support:1.0-grails-2.4"
    }

    plugins {
        // plugins for the build system only
        build ":tomcat:7.0.54"

        // plugins for the compile step
        compile ":scaffolding:2.1.2"
        compile ':cache:1.1.7'
        compile ":asset-pipeline:1.8.11"

        // plugins needed at runtime but not for compilation
        runtime ":hibernate4:4.3.5.4" // or ":hibernate:3.6.10.16"
        runtime ":database-migration:1.4.0"
        runtime ":jquery:1.11.1"

        // Uncomment these to enable additional asset-pipeline capabilities
        //compile ":sass-asset-pipeline:1.7.4"
        //compile ":less-asset-pipeline:1.7.0"
        //compile ":coffee-asset-pipeline:1.7.0"
        //compile ":handlebars-asset-pipeline:1.3.0.3"
    }
}

Answer 1

将它添加到你的 BuildConfig.groovy，如果它是 gradle

repositories {
    inherits true // Whether to inherit repository definitions from plugins
    grailsPlugins()
    grailsHome()
    grailsCentral()
    mavenCentral()

    // uncomment these to enable remote dependency resolution from public Maven repositories
    //mavenCentral()
    //mavenLocal()
    //mavenRepo "http://snapshots.repository.codehaus.org"
    //mavenRepo "http://repository.codehaus.org"
    //mavenRepo "http://download.java.net/maven/2/"
    //mavenRepo "http://repository.jboss.com/maven2/"
}

如果是maven则在pom.xml中跟随

<project ...>
<repositories>
    <repository>
      <id>central</id>
      <url>http://central.maven.org/maven2/</url>
    </repository>
 </repositories>
</project>