Question

我正在尝试将Room Persistence库添加到Android应用程序项目中。在 build.gradle 文件中，我添加了以下依赖项：

implementation 'android.arch.persistence.room:runtime:1.1.1'
annotationProcessor 'android.arch.persistence.room:compiler:1.1.1'

并在应用程序的onCreate方法中将其初始化：

    static FilmsDao sFilmsDao;

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

        FilmsDatabase database = Room.databaseBuilder(this, FilmsDatabase.class, "films_database")
                .fallbackToDestructiveMigration()
                .build();

        sFilmsDao = database.getFilmsDao();

    }

    public static FilmsDao getFilmsDao(){
        return sFilmsDao;
    }

FilmsDao看起来像这样：

@Dao
public interface FilmsDao {

    @Query("delete from film")
    void clearDatabase();

    @Query("select * from film where id = :id")
    Film getItem(long id);

    @Query("select * from film")
    List<Film> getAll();

    @Query("select * from film where name LIKE :name")
    List<Film> searchByName(String name);

    @Query("select * from film where director LIKE :query")
    List<Film> searchByDirector(String query);

    @Query("select * from film where year>=:startYear AND year<=:endYear")
    List<Film> searchInBounds(int startYear, int endYear);

    @Query("select * from film ORDER BY rating DESC LIMIT :count")
    List<Film> getTopFilms(int count);

    @Insert(onConflict = OnConflictStrategy.REPLACE)
    void insertItem(Film film);

    @Update(onConflict = OnConflictStrategy.REPLACE)
    void updateItem(Film film);

    @Query("delete from film where id = :id")
    void deleteItem(long id);

}

FilmsDatabase返回FilmsDao：

@Database(entities = {Film.class}, version = 1)
public abstract class FilmsDatabase extends RoomDatabase {

    public abstract FilmsDao getFilmsDao();

}

当我尝试运行应用程序时，出现以下错误：

编译失败；有关详细信息，请参见编译器错误输出。

它包含1个警告和2个错误。

警告：

有多个优秀的构造函数，Room将选择无参构造函数。您可以使用@Ignore注释消除不必要的构造函数。

错误1：

错误：编译器消息文件损坏：key = compiler.err.Processor： android.arch.persistence.room.RoomProcessor@5334315d arguments = {0}， {1}，{2}，{3}，{4}，{5}，{6}，{7}

错误2：

错误：无法访问Flowable

详细的错误信息：

org.gradle.api.tasks.TaskExecutionException：任务执行失败 '：app：compileDebugJavaWithJavac'。在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:100）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute（ExecuteActionsTaskExecuter.java:70）在 org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute（OutputDirectoryCreatingTaskExecuter.java:51）在 org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute（SkipUpToDateTaskExecuter.java:62）在 org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute（ResolveTaskOutputCachingStateExecuter.java:54）在 org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute（ValidatingTaskExecuter.java:60）在 org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute（SkipEmptySourceFilesTaskExecuter.java:97）在 org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute（CleanupStaleOutputsExecuter.java:87）在 org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute（ResolveTaskArtifactStateTaskExecuter.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:54）在 org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute（ExecuteAtMostOnceTaskExecuter.java:43）在 org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute（CatchExceptionTaskExecuter.java:34）在 org.gradle.execution.taskgraph.DefaultTaskGraphExecuter $ EventFiringTaskWorker $ 1.run（DefaultTaskGraphExecuter.java:248）在 org.gradle.internal.progress.DefaultBuildOperationExecutor $ RunnableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:336）在 org.gradle.internal.progress.DefaultBuildOperationExecutor $ RunnableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:328）在 org.gradle.internal.progress.DefaultBuildOperationExecutor.execute（DefaultBuildOperationExecutor.java:199）在 org.gradle.internal.progress.DefaultBuildOperationExecutor.run（DefaultBuildOperationExecutor.java:110）在 org.gradle.execution.taskgraph.DefaultTaskGraphExecuter $ EventFiringTaskWorker.execute（DefaultTaskGraphExecuter.java:241）在 org.gradle.execution.taskgraph.DefaultTaskGraphExecuter $ EventFiringTaskWorker.execute（DefaultTaskGraphExecuter.java:230）在 org.gradle.execution.taskgraph.DefaultTaskPlanExecutor $ TaskExecutorWorker.processTask（DefaultTaskPlanExecutor.java:123）在 org.gradle.execution.taskgraph.DefaultTaskPlanExecutor $ TaskExecutorWorker.access $ 200（DefaultTaskPlanExecutor.java:79）在 org.gradle.execution.taskgraph.DefaultTaskPlanExecutor $ TaskExecutorWorker $ 1.execute（DefaultTaskPlanExecutor.java:104）在 org.gradle.execution.taskgraph.DefaultTaskPlanExecutor $ TaskExecutorWorker $ 1.execute（DefaultTaskPlanExecutor.java:98）在 org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute（DefaultTaskExecutionPlan.java:626）在 org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask（DefaultTaskExecutionPlan.java:581）在 org.gradle.execution.taskgraph.DefaultTaskPlanExecutor $ TaskExecutorWorker.run（DefaultTaskPlanExecutor.java:98）在 org.gradle.internal.concurrent.ExecutorPolicy $ CatchAndRecordFailures.onExecute（ExecutorPolicy.java:63）在 org.gradle.internal.concurrent.ManagedExecutorImpl $ 1.run（ManagedExecutorImpl.java:46）在 java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142）在 java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617）在 org.gradle.internal.concurrent.ThreadFactoryImpl $ ManagedThreadRunnable.run（ThreadFactoryImpl.java:55）在java.lang.Thread.run（Thread.java:745）造成原因： org.gradle.api.internal.tasks.compile.CompilationFailedException：编译失败；有关详细信息，请参见编译器错误输出。在 org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute（JdkJavaCompiler.java:50）在 org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute（JdkJavaCompiler.java:35）在 org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors（NormalizingJavaCompiler.java:98）在 org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute（NormalizingJavaCompiler.java:51）在 org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute（NormalizingJavaCompiler.java:37）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.internal.tasks.compile.incremental.IncrementalCompilationFinalizer.execute（IncrementalCompilationFinalizer.java:39）在 org.gradle.api.internal.tasks.compile.incremental.IncrementalCompilationFinalizer.execute（IncrementalCompilationFinalizer.java:24）在 org.gradle.api.tasks.compile.JavaCompile.performCompilation（JavaCompile.java:207）在 org.gradle.api.tasks.compile.JavaCompile.compile（JavaCompile.java:133）在 com.android.build.gradle.tasks.factory.AndroidJavaCompile.compile（AndroidJavaCompile.java:125）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处 sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）在 org.gradle.internal.reflect.JavaMethod.invoke（JavaMethod.java:73）在 org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute（IncrementalTaskAction.java:46）在 org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute（StandardTaskAction.java:39）在 org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute（StandardTaskAction.java:26）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter $ 1.run（ExecuteActionsTaskExecuter.java:121）在 org.gradle.internal.progress.DefaultBuildOperationExecutor $ RunnableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:336）在 org.gradle.internal.progress.DefaultBuildOperationExecutor $ RunnableBuildOperationWorker.execute（DefaultBuildOperationExecutor.java:328）在 org.gradle.internal.progress.DefaultBuildOperationExecutor.execute（DefaultBuildOperationExecutor.java:199）在 org.gradle.internal.progress.DefaultBuildOperationExecutor.run（DefaultBuildOperationExecutor.java:110）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction（ExecuteActionsTaskExecuter.java:110）在 org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions（ExecuteActionsTaskExecuter.java:92） ...另外32个

所以我的问题是：如何解决这个问题？

Answer 1

super({class: this.class, suffix: this.suffix...});的定义将是这里唯一相关的文件...因为它可能包含多个构造函数，除默认构造函数外，所有其他构造函数都需要用Film进行注释；字段也是如此，注释处理器不应对其进行处理。通常，它只是抱怨有多个构造函数可供选择，因此它不知道该怎么做...通过添加更多注释来进行说明。

Answer 2

将会议室数据库支持添加到Kotlin android项目时遇到了类似的问题。

e：错误：编译器消息文件损坏：key = compiler.err.Processor：org.jetbrains.kotlin.kapt3.base.ProcessorWrapper@5482d805 arguments = {0}，{1}，{2}，{3} ，{4}，{5}，{6}，{7}

像这样添加依赖项

apply plugin: 'kotlin-kapt'
// ...
dependencies {
    // ...
    implementation 'androidx.room:room-runtime:2.1.0-alpha01'
    kapt 'androidx.room:room-compiler:2.1.0-alpha01'
}

用@Entity注释的模型是从基本模型继承的。

@Entity
data class UserModel(...) : BasicModel() {
}

删除实体中的继承后，将消除此编译错误。

会议室-编译器消息文件损坏

2 个答案: