android studio 打包apk不成功

22098507 2015-09-21 08:44:39

各位大神，我刚学Android不久，想请教一下Android打包apk的问题
打包我都是根据网上的教程学习的，但是最后打包apk总是出问题

Information:Gradle tasks [:app:assembleDebug]
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72300Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42300Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:processDebugJavaRes UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources UP-TO-DATE
:app:preDexDebug UP-TO-DATE
:app:dexDebug UP-TO-DATE
:app:validateExternalOverrideSigning
:app:packageDebug FAILED
Error:Execution failed for task ':app:packageDebug'.
> Failed to read key from keystore
Information:BUILD FAILED
Information:Total time: 3.831 secs
Information:1 error
Information:0 warnings
Information:See complete output in console
请问具体是什么问题呢，搜索了好久发现在打包时候出现问题的很少，也没找到具体的答案

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