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Używam Spring Tools Suite 3.6.SR1. Pędzę menu Dashboard, naciśnij: "Rozszerzenia IDE" Check "Gradle wsparcie", naciśnij przycisk Install: 
Jak zainstalować wtyczkę "Gradle support" w Spring Tools Suite 3.6.SR1?
następujących złączeń nie są dostępne: Gradle Pomoc Przejdź z instalacją anyways?
Error:
Problems occurred while performing installation: Operation details
Operation details
Cannot complete the request. See the error log for details.
Log:
!SESSION 2015-01-20 00:40:01.245 -----------------------------------------------
eclipse.buildId=3.6.3.201501121239-SR1-e44
java.version=1.8.0_25
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments: -product org.springsource.sts.ide
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.springsource.sts.ide
!ENTRY org.eclipse.core.runtime 2 0 2015-01-20 00:41:39.394
!MESSAGE Authorization infrastructure (org.eclipse.core.runtime.compatibility.auth) not installed.
!STACK 0
java.lang.ClassNotFoundException: org.eclipse.core.internal.runtime.auth.AuthorizationDatabase cannot be found by org.eclipse.core.runtime_3.10.0.v20140318-2214
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:432)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:345)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:337)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.eclipse.core.internal.runtime.AuthorizationHandler.getAuthClass(AuthorizationHandler.java:48)
at org.eclipse.core.internal.runtime.AuthorizationHandler.loadKeyring(AuthorizationHandler.java:69)
at org.eclipse.core.internal.runtime.AuthorizationHandler.flushAuthorizationInfo(AuthorizationHandler.java:231)
at org.eclipse.core.runtime.Platform.flushAuthorizationInfo(Platform.java:590)
at com.atlassian.connector.eclipse.internal.commons.ui.MigrateToSecureStorageJob.migrateToSecureStorage(MigrateToSecureStorageJob.java:89)
at com.atlassian.connector.eclipse.internal.commons.ui.MigrateToSecureStorageJob.runInUIThread(MigrateToSecureStorageJob.java:60)
at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:97)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
!ENTRY org.eclipse.egit.ui 2 0 2015-01-20 00:41:43.092
!MESSAGE Warning: EGit couldn't detect the installation path "gitPrefix" of native Git. Hence EGit can't respect system level
Git settings which might be configured in ${gitPrefix}/etc/gitconfig under the native Git installation directory.
The most important of these settings is core.autocrlf. Git for Windows by default sets this parameter to true in
this system level configuration. The Git installation location can be configured on the
Team > Git > Configuration preference page's 'System Settings' tab.
This warning can be switched off on the Team > Git > Confirmations and Warnings preference page.
!ENTRY org.eclipse.egit.ui 2 0 2015-01-20 00:41:43.094
!MESSAGE Warning: The environment variable HOME is not set. The following directory will be used to store the Git
user global configuration and to define the default location to store repositories: 'C:\Users\vy.vy-pc'. If this is
not correct please set the HOME environment variable and restart Eclipse. Otherwise Git for Windows and
EGit might behave differently since they see different configuration options.
This warning can be switched off on the Team > Git > Confirmations and Warnings preference page.
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:45:47.878
!MESSAGE Failed to dispatch repository event to org.eclipse.m2e.core.internal.embedder.EclipseRepositoryListener: null
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:47:30.235
!MESSAGE Failed to dispatch repository event to org.eclipse.m2e.core.internal.embedder.EclipseRepositoryListener: null
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:49:52.886
!MESSAGE Failed to dispatch repository event to org.eclipse.m2e.core.internal.embedder.EclipseRepositoryListener: null
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:49:53.656
!MESSAGE Failed to dispatch repository event to org.eclipse.m2e.core.internal.embedder.EclipseRepositoryListener: null
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:49:54.632
!MESSAGE Failed to dispatch repository event to org.eclipse.m2e.core.internal.embedder.EclipseRepositoryListener: null
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:49:55.608
!MESSAGE Failed to dispatch repository event to org.eclipse.m2e.core.internal.embedder.EclipseRepositoryListener: null
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:50:41.291
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 00:50:41.560
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 01:01:35.419
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 01:01:35.447
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 01:01:52.783
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.m2e.logback.appender 2 0 2015-01-20 01:01:52.787
!MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
!ENTRY org.eclipse.mylyn.discovery.ui 4 0 2015-01-20 01:06:12.209
!MESSAGE Problems occurred while performing installation: Operation details
!STACK 1
org.eclipse.core.runtime.CoreException: Operation details
at org.eclipse.mylyn.internal.discovery.ui.PrepareInstallProfileJob.resolveInstall(PrepareInstallProfileJob.java:194)
at org.eclipse.mylyn.internal.discovery.ui.PrepareInstallProfileJob.run(PrepareInstallProfileJob.java:95)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
Contains: Cannot complete the request. See the error log for details.
!SUBENTRY 1 org.eclipse.equinox.p2.operations 4 0 2015-01-20 01:06:12.211
!MESSAGE Operation details
!SUBENTRY 2 org.eclipse.equinox.p2.operations 4 10050 2015-01-20 01:06:12.211
!MESSAGE Cannot complete the request. See the error log for details.
!ENTRY org.eclipse.mylyn.discovery.ui 4 0 2015-01-20 01:08:28.519
!MESSAGE Problems occurred while performing installation: The following connectors are not available: Gradle Support (id=org.springsource.ide.eclipse.gradle.feature.feature.group, site=http://dist.springsource.com/release/TOOLS/update/e4.4), Groovy 2.2 Compiler for Groovy-Eclipse (id=org.codehaus.groovy22.feature.feature.group, site=http://dist.springsource.com/release/TOOLS/update/e4.4)
!STACK 1
org.eclipse.core.runtime.CoreException: The following connectors are not available: Gradle Support (id=org.springsource.ide.eclipse.gradle.feature.feature.group, site=http://dist.springsource.com/release/TOOLS/update/e4.4), Groovy 2.2 Compiler for Groovy-Eclipse (id=org.codehaus.groovy22.feature.feature.group, site=http://dist.springsource.com/release/TOOLS/update/e4.4)
at org.eclipse.mylyn.internal.discovery.ui.PrepareInstallProfileJob.checkForUnavailable(PrepareInstallProfileJob.java:296)
at org.eclipse.mylyn.internal.discovery.ui.PrepareInstallProfileJob.computeInstallableUnits(PrepareInstallProfileJob.java:206)
at org.eclipse.mylyn.internal.discovery.ui.PrepareInstallProfileJob.run(PrepareInstallProfileJob.java:91)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)
!SUBENTRY 1 org.eclipse.mylyn.discovery.ui 4 0 2015-01-20 01:08:28.520
!MESSAGE The following connectors are not available: Gradle Support (id=org.springsource.ide.eclipse.gradle.feature.feature.group, site=http://dist.springsource.com/release/TOOLS/update/e4.4), Groovy 2.2 Compiler for Groovy-Eclipse (id=org.codehaus.groovy22.feature.feature.group, site=http://dist.springsource.com/release/TOOLS/update/e4.4)
at ...
!MESSAGE Cannot complete the request. See the error log for details.
Może to być problem z siecią. Spróbowałem tego ponownie przy świeżej instalacji STS 3.6.3.SR1 i tutaj dodałem rozszerzenie Gradle. Czy można uzyskać dostęp do witryn aktualizacji za pośrednictwem okna dialogowego "Zainstaluj nowe oprogramowanie"? Jeśli tak, możesz tam przejść i ręcznie dodać rozszerzenie Gradle, wybierając stamtąd stronę aktualizacji STS. –
Tak, używam również "Zainstaluj nowe oprogramowanie". –