Question

我正在尝试学习Realm for Android并按照https://realm.io/docs/java/latest/#installation的安装说明进行操作。

项目build.gradle文件

buildscript {
repositories {
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:2.2.2'
    classpath "io.realm:realm-gradle-plugin:2.1.1"

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
}

allprojects {
repositories {
    jcenter()
}
}

task clean(type: Delete) {
 delete rootProject.buildDir
}

app level build.gradle文件

apply plugin: 'com.android.application'
apply plugin: 'realm-android'

android {
compileSdkVersion 25
buildToolsVersion "25.0.0"
defaultConfig {
    applicationId "com.app.practice.realm.realmpractice"
    minSdkVersion 18
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.0.0'
testCompile 'junit:junit:4.12'
 }

然后我添加了一个用户扩展RealmObject的类，并试图编译项目只是为了看到evrything是好的..但我收到错误

Error:Execution failed for task ':app:compileDebugJavaWithJavac'.

编译失败;有关详细信息，请参阅编译器错误输出。

用户类：

package com.app.practice.realm.realmpractice;

import io.realm.RealmObject;

public class User extends RealmObject {

private int id;
private String name;
}

我的申请文件

import android.app.Application;

import io.realm.Realm;

public class MyApplication extends Application {

@Override
public void onCreate() {
    super.onCreate();
    Realm.init(this);
}
}

- Stacktrace o / p

Note: Processing class User
Note: Creating DefaultRealmModule
An exception has occurred in the compiler (1.8.0_05). Please file a bug at     the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after   checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.

com.sun.tools.javac.code.Symbol $ CompletionFailure：找不到rx.Observable的类文件

FAILED

失败：构建因异常而失败。

出了什么问题：任务执行失败＆＃39;：app：compileDebugJavaWithJavac＆＃39;。

编译失败;有关详细信息，请参阅编译器错误输出。
尝试：使用--info或--debug选项运行以获得更多日志输出。
例外情况是： org.gradle.api.tasks.TaskExecutionException：任务＆＃39;：app：compileDebugJavaWithJavac＆＃39;执行失败。 at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:69）在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute（ExecuteActionsTaskExecuter.java:46）在org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute（PostExecutionAnalysisTaskExecuter.java:35）在org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute（SkipUpToDateTaskExecuter.java:66）在org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute（ValidatingTaskExecuter.java:58）在org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute（SkipEmptySourceFilesTaskExecuter.java:52）在org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute（SkipTaskWithNoActionsExecuter.java:52）在org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute（SkipOnlyIfTaskExecuter.java:53）在org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute（ExecuteAtMostOnceTaskExecuter.java:43）在org.gradle.execution.taskgraph.DefaultTaskGraphExecuter $ EventFiringTaskWorker.execute（DefaultTaskGraphExecuter.java:203）在org.gradle.execution.taskgraph.DefaultTaskGraphExecuter $ EventFiringTaskWorker.execute（DefaultTaskGraphExecuter.java:185） at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor $ TaskExecutorWorker.processTask（AbstractTaskPlanExecutor.java:66） at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor $ TaskExecutorWorker.run（AbstractTaskPlanExecutor.java:50）在org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process（DefaultTaskPlanExecutor.java:25）在org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute（DefaultTaskGraphExecuter.java:110）在org.gradle.execution.SelectedTaskExecutionAction.execute（SelectedTaskExecutionAction.java:37）在org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:37）在org.gradle.execution.DefaultBuildExecuter.access $ 000（DefaultBuildExecuter.java:23）在org.gradle.execution.DefaultBuildExecuter $ 1.proceed（DefaultBuildExecuter.java:43）在org.gradle.execution.DryRunBuildExecutionAction.execute（DryRunBuildExecutionAction.java:32）在org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:37）在org.gradle.execution.DefaultBuildExecuter.execute（DefaultBuildExecuter.java:30）在org.gradle.initialization.DefaultGradleLauncher $ 4.run（DefaultGradleLauncher.java:153）在org.gradle.internal.Factories $ 1.create（Factories.java:22）在org.gradle.internal.progress.DefaultBuildOperationExecutor.run（DefaultBuildOperationExecutor.java:91）在org.gradle.internal.progress.DefaultBuildOperationExecutor.run（DefaultBuildOperationExecutor.java:53）在org.gradle.initialization.DefaultGradleLauncher.doBuildStages（DefaultGradleLauncher.java:150）在org.gradle.initialization.DefaultGradleLauncher.access $ 200（DefaultGradleLauncher.java:32）在org.gradle.initialization.DefaultGradleLauncher $ 1.create（DefaultGradleLauncher.java:98）在org.gradle.initialization.DefaultGradleLauncher $ 1.create（DefaultGradleLauncher.java:92）在org.gradle.internal.progress.DefaultBuildOperationExecutor.run（DefaultBuildOperationExecutor.java:91）在org.gradle.internal.progress.DefaultBuildOperationExecutor.run（DefaultBuildOperationExecutor.java:63）在org.gradle.initialization.DefaultGradleLauncher.doBuild（DefaultGradleLauncher.java:92）在org.gradle.initialization.DefaultGradleLauncher.run（DefaultGradleLauncher.java:83） at org.gradle.launcher.exec.InProcessBuildActionExecuter $ DefaultBuildController.run（InProcessBuildActionExecuter.java:99）在org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run（BuildModelActionRunner.java:46）在org.gradle.launcher.exec.ChainingBuildActionRunner.run（ChainingBuildActionRunner.java:35）在org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run（SubscribableBuildActionRunner.java:58）在org.gradle.launcher.exec.ChainingBuildActionRunner.run（ChainingBuildActionRunner.java:35） at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute（InProcessBuildActionExecuter.java:48）在org.gradle.launcher.exec.InProcessBuildActionExecuter.execute（InProcessBuildActionExecuter.java:30）在org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute（ContinuousBuildActionExecuter.java:81）在org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute（ContinuousBuildActionExecuter.java:46）在org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild（ExecuteBuild.java:52）在org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute（BuildCommandOnly.java:36）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute（WatchForDisconnection.java:37）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute（ResetDeprecationLogger.java:26）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute（RequestStopIfSingleUsedDaemon.java:34）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.ForwardClientInput $ 2.call（ForwardClientInput.java:74）在org.gradle.launcher.daemon.server.exec.ForwardClientInput $ 2.call（ForwardClientInput.java:72）在org.gradle.util.Swapper.swap（Swapper.java:38）在org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute（ForwardClientInput.java:72）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute（DaemonHealthTracker.java:47）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.LogToClient.doBuild（LogToClient.java:60）在org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute（BuildCommandOnly.java:36）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild（EstablishBuildEnvironment.java:72）在org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute（BuildCommandOnly.java:36）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute（HintGCAfterBuild.java:41）在org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed（DaemonCommandExecution.java:120）在org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy $ 1.run（StartBuildOrRespondWithBusy.java:50）在org.gradle.launcher.daemon.server.DaemonStateCoordinator $ 1.run（DaemonStateCoordinator.java:237） at org.gradle.internal.concurrent.ExecutorPolicy $ CatchAndRecordFailures.onExecute（ExecutorPolicy.java:54） at org.gradle.internal.concurrent.StoppableExecutorImpl $ 1.run（StoppableExecutorImpl.java:40）引起：org.gradle.api.internal.tasks.compile.CompilationFailedException：编译失败;请参阅编译器错误输出以获取详细信在org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute（JdkJavaCompiler.java:48）在org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute（JdkJavaCompiler.java:33）在org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors（NormalizingJavaCompiler.java:104）在org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute（NormalizingJavaCompiler.java:53）在org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute（NormalizingJavaCompiler.java:38）在org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute（CleaningJavaCompilerSupport.java:35）在org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute（CleaningJavaCompilerSupport.java:25）在org.gradle.api.tasks.compile.JavaCompile.performCompilation（JavaCompile.java:163）在org.gradle.api.tasks.compile.JavaCompile.compile（JavaCompile.java:145）在org.gradle.api.tasks.compile.JavaCompile.compile（JavaCompile.java:93）在com.android.build.gradle.tasks.factory.AndroidJavaCompile.compile（AndroidJavaCompile.java:49）在org.gradle.internal.reflect.JavaMethod.invoke（JavaMethod.java:75） at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ IncrementalTaskAction.doExecute（AnnotationProcessingTaskFactory.java:245）在org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ StandardTaskAction.execute（AnnotationProcessingTaskFactory.java:221） at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ IncrementalTaskAction.execute（AnnotationProcessingTaskFactory.java:232） at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory $ StandardTaskAction.execute（AnnotationProcessingTaskFactory.java:210） at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction（ExecuteActionsTaskExecuter.java:80）在org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:61） ......还有70多个

Answer 1

根据https://realm.io/docs/java/latest/#jackson-databind

1）创建一个名为＆＃34; rx＆＃34;

的包

2）在名为＆＃34; Observable＆＃34;的包中创建一个空类。如下所示：

package rx;

public class Observable {

}

错误：任务＆＃39;：app：compileDebugJavaWithJavac＆＃39;执行失败。＆GT;扩展RealmObject类

1 个答案:

错误：任务＆＃39;：app：compileDebugJavaWithJavac＆＃39;执行失败。 ＆GT;扩展RealmObject类

1 个答案:

错误：任务＆＃39;：app：compileDebugJavaWithJavac＆＃39;执行失败。＆GT;扩展RealmObject类