Android Studio 使用Gradle在Terminal终端用命令打包

gradlew assembRelease 打包

完整的build.gradle文件如下：

`apply plugin: 'com.android.application'def releaseTime() {    return new Date().format("yyyy-MM-dd", TimeZone.getTimeZone("UTC"))}android {    compileSdkVersion 23    buildToolsVersion "23.0.2"    defaultConfig {        //应用的包名        applicationId "cn.emnet.goodway"        minSdkVersion 15        targetSdkVersion 23        versionCode 1        versionName "1.0"        // dex突破65535的限制        multiDexEnabled true        // 默认是umeng的渠道        manifestPlaceholders = [UMENG_CHANNEL_VALUE: "umeng"]    }    lintOptions {        abortOnError false    }    signingConfigs {        debug {            // No debug config        }        release {            storeFile file("D:/Workspaces/Android_stuido/Project_GoodWay/mykey.keystore")            storePassword "goodway"            keyAlias "goodway"            keyPassword "goodway"        }    }    buildTypes {        debug {            // 显示Log            buildConfigField "boolean", "LOG_DEBUG", "true"            versionNameSuffix "-debug"            minifyEnabled false            zipAlignEnabled false            shrinkResources false            signingConfig signingConfigs.debug        }        release {            // 不显示Log            buildConfigField "boolean", "LOG_DEBUG", "false"            minifyEnabled false            zipAlignEnabled true            // 移除无用的resource文件            shrinkResources true            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'            signingConfig signingConfigs.release            applicationVariants.all { variant ->                variant.outputs.each { output ->                    def outputFile = output.outputFile                    if (outputFile != null && outputFile.name.endsWith('.apk')) {                        // 输出apk名称为boohee_v1.0_2015-01-15_wandoujia.apk                        def fileName = "goodway_v${defaultConfig.versionName}_${releaseTime()}_${variant.productFlavors[0].name}.apk"                        output.outputFile = new File(outputFile.parent, fileName)                    }                }            }        }    }//**使用的批量打包**    productFlavors {        xiaomi {}        _360 {}        baidu {}        wandoujia {}    }    productFlavors.all {        flavor -> flavor.manifestPlaceholders = [UMENG_CHANNEL_VALUE: name]    }}//**工程依赖的包**dependencies {    compile fileTree(include: ['*.jar'], dir: 'libs')    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:23.1.0'    compile 'com.android.support:design:23.1.0'    compile 'com.squareup.okhttp:okhttp:2.0.0'    compile 'com.umeng.analytics:analytics:latest.integration'    compile 'com.google.code.gson:gson:2.4'}

在写代码的过程中，遇到了一个问题，走了不少的弯路，在我同学的帮助下，在零点前终于搞定了。
下面是遇到的问题

Caused by: java.lang.IllegalStateException: Could not find tools.jar

没有找到tools.jar包。
详细的LOG 如下：

FAILURE: Build failed with an exception.* What went wrong:Execution failed for task ':app:compileBaiduReleaseJavaWithJavac'.> Could not find tools.jar* Try:        Run with --info or --debug option to get more log output.* Exception is:org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:compileBaiduReleaseJavaWithJavac'.        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)        at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)        at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)        at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)        at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)        at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)        at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:310)        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)        at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)        at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)        at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:88)        at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)        at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)        at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)        at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)        at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:149)        at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)        at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)        at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:90)        at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)        at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:41)        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)        at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:50)        at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:27)        at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:40)        at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:169)        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)        at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)        at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)        at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)        at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)        at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)        at org.gradle.launcher.Main.doAction(Main.java:33)        at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)        at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)        at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)        at org.gradle.launcher.GradleMain.main(GradleMain.java:23)        at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:33)        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:130)        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)Caused by: java.lang.IllegalStateException: Could not find tools.jar        at org.gradle.internal.jvm.JdkTools.(JdkTools.java:50)        at org.gradle.internal.jvm.JdkTools.current(JdkTools.java:41)        at org.gradle.api.internal.tasks.compile.JavaHomeBasedJavaCompilerFactory$SystemJavaCompilerFactory.create(JavaHomeBasedJavaCompilerFactory.java:77)        at org.gradle.api.internal.tasks.compile.JavaHomeBasedJavaCompilerFactory$SystemJavaCompilerFactory.create(JavaHomeBasedJavaCompilerFactory.java:75)        at org.gradle.api.internal.tasks.compile.JavaHomeBasedJavaCompilerFactory.findCompiler(JavaHomeBasedJavaCompilerFactory.java:57)        at org.gradle.api.internal.tasks.compile.JavaHomeBasedJavaCompilerFactory.create(JavaHomeBasedJavaCompilerFactory.java:44)        at org.gradle.api.internal.tasks.compile.JavaHomeBasedJavaCompilerFactory.create(JavaHomeBasedJavaCompilerFactory.java:28)        at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.createCompileTask(JdkJavaCompiler.java:55)        at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:44)        at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:33)        at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:101)        at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:50)        at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:36)        at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:34)        at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)        at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:157)        at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:137)        at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:91)        at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)

解决方法如下：
将jdk下的lib文件夹下的tools.jar 复制一份到Android studio 安装目录的lib下；
重新构建Gradle,在终端使用命令：
gradlew assembRelease --stacktrace 打包。
打包成功你会在项目的app\build\outputs\apk文件夹下看到你打的包。

语言不行，凑合看吧！不懂得留言吧！尽力为你解决！

gradlew assembRelease 打包

完整的build.gradle文件如下：

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