SQLiteCantOpenDatabaseException:未知错误(代码14):无法打开数据库(仅在单元测试应用程序时)

作者：用户tkeex06qp1 | 来源：互联网 | 2023-02-03 15:46

如何解决《SQLiteCantOpenDatabaseException:未知错误(代码14):无法打开数据库(仅在单元测试应用程序时)》经验，为你挑选了1个好方法。

所以我最近在我的应用程序中添加了持久性并且我得到了这个错误,但有趣的部分是应用程序运行良好,即使持久化对象检索它们和一切,但在运行单元测试时我得到上面写的错误.

以下是我的应用程序的有趣部分

清单权限:

这是gradle配置defailtConfig块

 compileSdkVersion 24
    buildToolsVersion '25.0.0'


    defaultConfig {
        applicationId "mehungry.com.myapplicationnavigationdawerdemo"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        minSdkVersion 22
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        multiDexEnabled = true

        jackOptions {
            enabled true
        }
    }

我的DatabaseHelper:

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

public class DatabaseHelper extends SQLiteOpenHelper {

    public static final int DATABASE_VERSION = 2;
    public static final String DATABASE_NAME = "MeHungryApp.db";

    private SQLiteDatabase database;

    private final Context context;

    public DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        this.cOntext= context;
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CreateStatments.ATABLE);
        db.execSQL(CreateStatments.BTABLE);
        db.execSQL(CreateStatments.CTABLE);

        db.execSQL(CreateStatments.DTABLE);
        db.execSQL(CreateStatments.ETABLE);
        db.execSQL(CreateStatments.FTABLE);
        db.execSQL(CreateStatments.GTABLE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        Log.w(DatabaseHelper.class.getName(),
                "Upgrading database from version " + oldVersion + " to "
                        + newVersion + ", which will destroy all old data");
        db.execSQL("DROP TABLE IF EXISTS " + ATableDef.TABLE_NAME);
        db.execSQL("DROP TABLE IF EXISTS " + BTableDef.TABLE_NAME);
        db.execSQL("DROP TABLE IF EXISTS " + CTableDef.TABLE_NAME);
        db.execSQL("DROP TABLE IF EXISTS " + DTableDef.TABLE_NAME);
        db.execSQL("DROP TABLE IF EXISTS " + ETableDef.TABLE_NAME);
        db.execSQL("DROP TABLE IF EXISTS " + FTableDef.TABLE_NAME);
        db.execSQL("DROP TABLE IF EXISTS " + GTableDef.TABLE_NAME);

        onCreate(db);
    }

}

我的数据库测试类(暂时不做任何事)

@RunWith(AndroidJUnit4.class)
@LargeTest
public class MealEntityPersistenceTest {

private SQLiteDatabase database;
private DatabaseHelper databaseHelper;

public MealEntityPersistenceTest() {

}

@Before
public void setUp() {
    databaseHelper = new 
DatabaseHelper(InstrumentationRegistry.getContext());
    database = databaseHelper.getWritableDatabase();
}


@Test
public void testInsertRecipe() {
}


}

这就是我在Android Monitor中的表现

    05-18 18:16:12.437 12672-12672/? I/MonitoringInstrumentation: Activities that are still in CREATED to STOPPED: 0
05-18 18:16:12.438 12672-12695/? E/SQLiteLog: (14) cannot open file at line 30046 of [9491ba7d73]
05-18 18:16:12.439 12672-12695/? E/SQLiteLog: (14) os_unix.c:30046: (2) open(/data/data/mehungry.com.myapplicationnavigationdawerdemo.test/databases/MeHungryApp.db) - 
05-18 18:16:12.441 12672-12695/? E/SQLiteDatabase: Failed to open database '/data/data/mehungry.com.myapplicationnavigationdawerdemo.test/databases/MeHungryApp.db'.
   android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
   at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
   at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:218)
   at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:202)
   at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
   at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
   at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
   at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:806)
   at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:791)
   at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
   at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:1181)
   at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
   at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
   at mehungry.MealEntityPersistenceTest.setUp(MealEntityPersistenceTest.java:37)
   at java.lang.reflect.Method.invoke(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:372)
   at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
   at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
   at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
   at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
   at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
   at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
   at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
   at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
   at org.junit.runners.Suite.runChild(Suite.java:128)
   at org.junit.runners.Suite.runChild(Suite.java:27)
   at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
   at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
   at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
   at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
   at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
   at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
   at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262)
                                                       at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)
05-18 18:16:12.442 12672-12695/? I/TestRunner: failed: testInsertRecipe(mehungry.MealEntityPersistenceTest)
05-18 18:16:12.442 12672-12695/? I/TestRunner: ----- begin exception -----
05-18 18:16:12.443 12672-12695/? I/TestRunner: android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
   at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
   at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:218)
   at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:202)
   at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
   at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
   at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
   at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:806)
   at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:791)
   at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
   at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:1181)
   at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
   at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
   at mehungry.MealEntityPersistenceTest.setUp(MealEntityPersistenceTest.java:37)
   at java.lang.reflect.Method.invoke(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:372)
   at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
   at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
   at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
   at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
   at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
   at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
   at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
   at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
   at org.junit.runners.Suite.runChild(Suite.java:128)
   at org.junit.runners.Suite.runChild(Suite.java:27)
   at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
   at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
   at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
   at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
   at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
   at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
   at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262)
   at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)
05-18 18:16:12.443 12672-12695/? I/TestRunner: ----- end exception -----

我变得绝望,因为我已经看到了大量类似的问题,但没有任何帮助我,所以任何方向或狂野的猜测将非常感激.

1> nikolis..：

经过一番调查后,我发现问题出在数据库路径上

在测试时:

/data/data/mehungry.com.myapplicationnavigationdawerdemo.test/databases/MeHungryApp.db

运行整个应用程序时:

/data/data/mehungry.com.myapplicationnavigationdawerdemo/databases/MeHungryApp.db

这就是问题,当我更改了DatabaseHelper构造函数调用时,这种不一致性已得到修复

由此 :

databaseHelper = new DatabaseHelper(InstrumentationRegistry.getContext());

对此:

databaseHelper = new DatabaseHelper(InstrumentationRegistry.getTargetContext());

希望它可能在某些方面帮助某人.

推荐阅读

express
Spring Boot 中使用 spring-boot-starter-quartz 实现定时任务

本文介绍了如何在 Spring Boot 项目中使用 spring-boot-starter-quartz 组件实现定时任务，并将 cron 表达式存储在数据库中，以便动态调整任务执行频率。 ... [详细]

蜡笔小新 2024-11-14 18:55:09
format
Android Studio SQLite 数据库增删改查简单（代码参考）

一个建表一个执行crud操作建表代码importandroid.content.Context;importandroid.database.sqlite.SQLiteDat ... [详细]

蜡笔小新 2024-11-14 11:01:49
ip
com.sun.javadoc.PackageDoc.exceptions()方法的使用及代码示例

com.sun.javadoc.PackageDoc.exceptions()方法的使用及代码示例 ... [详细]

蜡笔小新 2024-11-13 10:47:33
数组
如何在Java中使用DButils类

这期内容当中小编将会给大家带来有关如何在Java中使用DButils类，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。D ... [详细]

蜡笔小新 2024-11-12 13:46:11
shell
MySQL初级篇——字符串、日期时间、流程控制函数的相关应用

文章目录：1.字符串函数2.日期时间函数2.1获取日期时间2.2日期与时间戳的转换2.3获取年月日、时分秒、星期数、天数等函数2.4时间和秒钟的转换2. ... [详细]

蜡笔小新 2024-11-14 10:57:02
java
Spring Data JdbcTemplate 入门指南

本文将介绍如何使用 Spring JdbcTemplate 进行数据库操作，包括查询和插入数据。我们将通过一个学生表的示例来演示具体步骤。 ... [详细]

蜡笔小新 2024-11-14 10:33:29
format
HDFS API

Hadoop的文件操作位于包org.apache.hadoop.fs里面，能够进行新建、删除、修改等操作。比较重要的几个类：(1)Configurati ... [详细]

蜡笔小新 2024-11-13 17:31:50
jsp
Java DAO模式详解与代码示例

DAO（Data Access Object）模式是一种用于抽象和封装所有对数据库或其他持久化机制访问的方法，它通过提供一个统一的接口来隐藏底层数据访问的复杂性。 ... [详细]

蜡笔小新 2024-11-13 12:25:33
java
oracle c3p0 dword 60,web_day10 dbcp c3p0 dbutils

createdatabasemydbcharactersetutf8;alertdatabasemydbcharactersetutf8;1.自定义连接池为了不去经常创建连接和释放 ... [详细]

蜡笔小新 2024-11-12 19:26:15
ip
Python 使用 DOM 和 SAX 解析 XML 的应用实例

本文介绍如何使用 Python 的 DOM 和 SAX 方法解析 XML 文件，并通过示例展示了如何动态创建数据库表和处理大量数据的实时插入。 ... [详细]

蜡笔小新 2024-11-12 16:10:39
ip
JavaScript面部交换代码及实现方法

本文详细介绍了如何使用JavaScript实现面部交换功能，包括基本原理和具体实现步骤。 ... [详细]

蜡笔小新 2024-11-14 15:54:06
hash
Java 中 com.apollographql.apollo.api.internal.Optional.orNull() 方法详解与示例

本文详细介绍了 com.apollographql.apollo.api.internal.Optional 类中的 orNull() 方法，并提供了多个实际代码示例，帮助开发者更好地理解和使用该方法。 ... [详细]

蜡笔小新 2024-11-14 15:03:23
数组
包含phppdoerrorcode的词条

包含phppdoerrorcode的词条 ... [详细]

蜡笔小新 2024-11-14 12:06:14
数组
Spring 3.0.5 中获取 MySQL 表的自增主键

本文介绍了如何在 Spring 3.0.5 中使用 JdbcTemplate 插入数据并获取 MySQL 表中的自增主键。 ... [详细]

蜡笔小新 2024-11-13 18:00:32
email
php更新数据库字段的函数是,php更新数据库字段的函数是

php更新数据库字段的函数是,php更新数据库字段的函数是 ... [详细]

蜡笔小新 2024-11-12 11:37:31

用户tkeex06qp1

这个家伙很懒，什么也没留下！

Tags | 热门标签

RankList | 热门文章