打包项目dubbo报错:下载不到dubbo-parent

编译安装一个项目时,maven报如下错误:

[ERROR] Failed to execute goal on project zheng-common: Could not resolve dependencies for project com.zheng:zheng-common:jar:1.0.0: Failed to collect dependencies at com.alibaba:dubbo:jar:2.5.6: Failed to read artifact descriptor for com.alibaba:dubbo:jar:2.5.6: Failure to find com.alibaba:dubbo-parent:pom:2.5.6 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project zheng-common: Could not resolve dependencies for project com.zheng:zheng-common:jar:1.0.0: Failed to collect dependencies at com.alibaba:dubbo:jar:2.5.6
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:269)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.apache.maven.project.DependencyResolutionException: Could not resolve dependencies for project com.zheng:zheng-common:jar:1.0.0: Failed to collect dependencies at com.alibaba:dubbo:jar:2.5.6
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:177)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.eclipse.aether.collection.DependencyCollectionException: Failed to collect dependencies at com.alibaba:dubbo:jar:2.5.6
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies (DefaultDependencyCollector.java:293)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies (DefaultRepositorySystem.java:282)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:169)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for com.alibaba:dubbo:jar:2.5.6
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom (DefaultArtifactDescriptorReader.java:323)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor (DefaultArtifactDescriptorReader.java:192)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor (DefaultDependencyCollector.java:539)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult (DefaultDependencyCollector.java:522)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:411)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:365)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process (DefaultDependencyCollector.java:353)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies (DefaultDependencyCollector.java:256)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies (DefaultRepositorySystem.java:282)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:169)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Failure to find com.alibaba:dubbo-parent:pom:2.5.6 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel (DefaultModelResolver.java:178)
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel (DefaultModelResolver.java:224)
    at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally (DefaultModelBuilder.java:1052)
    at org.apache.maven.model.building.DefaultModelBuilder.readParent (DefaultModelBuilder.java:830)
    at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:332)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom (DefaultArtifactDescriptorReader.java:314)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor (DefaultArtifactDescriptorReader.java:192)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor (DefaultDependencyCollector.java:539)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult (DefaultDependencyCollector.java:522)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:411)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:365)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process (DefaultDependencyCollector.java:353)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies (DefaultDependencyCollector.java:256)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies (DefaultRepositorySystem.java:282)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:169)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to find com.alibaba:dubbo-parent:pom:2.5.6 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve (DefaultArtifactResolver.java:422)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts (DefaultArtifactResolver.java:224)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact (DefaultArtifactResolver.java:201)
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel (DefaultModelResolver.java:174)
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel (DefaultModelResolver.java:224)
    at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally (DefaultModelBuilder.java:1052)
    at org.apache.maven.model.building.DefaultModelBuilder.readParent (DefaultModelBuilder.java:830)
    at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:332)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom (DefaultArtifactDescriptorReader.java:314)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor (DefaultArtifactDescriptorReader.java:192)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor (DefaultDependencyCollector.java:539)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult (DefaultDependencyCollector.java:522)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:411)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:365)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process (DefaultDependencyCollector.java:353)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies (DefaultDependencyCollector.java:256)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies (DefaultRepositorySystem.java:282)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:169)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Failure to find com.alibaba:dubbo-parent:pom:2.5.6 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
    at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException (DefaultUpdateCheckManager.java:233)
    at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact (DefaultUpdateCheckManager.java:208)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads (DefaultArtifactResolver.java:563)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads (DefaultArtifactResolver.java:481)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve (DefaultArtifactResolver.java:399)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts (DefaultArtifactResolver.java:224)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact (DefaultArtifactResolver.java:201)
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel (DefaultModelResolver.java:174)
    at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel (DefaultModelResolver.java:224)
    at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally (DefaultModelBuilder.java:1052)
    at org.apache.maven.model.building.DefaultModelBuilder.readParent (DefaultModelBuilder.java:830)
    at org.apache.maven.model.building.DefaultModelBuilder.build (DefaultModelBuilder.java:332)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom (DefaultArtifactDescriptorReader.java:314)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor (DefaultArtifactDescriptorReader.java:192)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor (DefaultDependencyCollector.java:539)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult (DefaultDependencyCollector.java:522)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:411)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency (DefaultDependencyCollector.java:365)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process (DefaultDependencyCollector.java:353)
    at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies (DefaultDependencyCollector.java:256)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies (DefaultRepositorySystem.java:282)
    at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve (DefaultProjectDependenciesResolver.java:169)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies (LifecycleDependencyResolver.java:243)
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies (LifecycleDependencyResolver.java:147)
    at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved (MojoExecutor.java:246)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:200)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)

通过错误可以得知,Failure to find com.alibaba:dubbo-parent:pom:2.5.6,local repository(本地仓库)和中央仓库都没有找到com.alibaba:dubbo-parent:pom:2.5.6
项目里的依赖:

<dependency>
            <groupId>com.alibabagroupId>
            <artifactId>dubboartifactId>
            <version>2.5.6version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframeworkgroupId>
                    <artifactId>springartifactId>
                exclusion>
            exclusions>
        dependency>

查看dubbo-2.5.6.pom里dubbo-parent的依赖:

<parent>
    <artifactId>dubbo-parentartifactId>
    <groupId>com.alibabagroupId>
    <version>2.5.6version>
parent>

dubbo-parent的GAV等信息为:

<modelVersion>4.0.0modelVersion>
<groupId>com.alibabagroupId>
<artifactId>dubbo-parentartifactId>
<version>2.5.6version>
<packaging>pompackaging>
<name>${project.artifactId}name>
<description>The parent project of dubbodescription>
<url>http://code.alibabatech.com/wiki/display/dubbourl>
<inceptionYear>2011inceptionYear>

这是个打包格式为pom的父模块。
先去本地仓库找:
根据groupId/artifactId/version/的路径,发现2.5.6下有个dubbo-parent-2.5.6.pom.lastUpdated,这个文件可能是因为下载超时等原因,总之删除这个原因重新下载,发现依然如此,只是生成一个.lastUpdated文件,猜想可能是中央仓库缺少这个jar包,打开中央仓库https://repo.maven.apache.org/maven2,依照路径找到dubbo-parent
打包项目dubbo报错:下载不到dubbo-parent_第1张图片
发现现在仓库里并不存在2.5.6这个版本,查看它的maven元数据查看其历史版本:
打包项目dubbo报错:下载不到dubbo-parent_第2张图片
发现确实只有2.6.12.6.2这两个版本。
阿里的maven私服搜了一下也没有。
打包项目dubbo报错:下载不到dubbo-parent_第3张图片
打包项目dubbo报错:下载不到dubbo-parent_第4张图片
最后去一个私服上找到了这个文件:
打包项目dubbo报错:下载不到dubbo-parent_第5张图片
下载,放在本地仓库中,至此编译成功。
下载地址:dubbo-parent-2.5.6.pom下载

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