可以从Android SQLiteConstraintException获取特定的错误详细信息?

我对某些数据收到以下错误,概念很清楚:

  android.database.sqlite.SQLiteConstraintException:FOREIGN KEY约束失败(代码787) 

但是,这并没有帮助我find哪个特定记录具有无效的FK。 而不是颠覆我的代码并尝试用新事务隔离每个插入,是否有任何方法可以打开(或提取)日志,使用有用的详细信息,例如有问题的表,甚至导致问题的FK值?

此外,我正在使用SqlBrite,并已启用调试日志记录(只记录操作,我仍然没有获得有关错误的更多信息)

更新:这是我自己的代码上面的所有logcat; 本质上是在尝试关闭先前打开的事务(BriteDatabase.Transaction)时捕获的exception(BriteDatabase.Transaction对象是一个新的添加;我只是从SqlBrite 0.1.0迁移到0.4.1)。

android.database.sqlite.SQLiteConstraintException: FOREIGN KEY constraint failed (code 787) at android.database.sqlite.SQLiteConnection.nativeExecute(Native Method) at android.database.sqlite.SQLiteConnection.execute(SQLiteConnection.java:555) at android.database.sqlite.SQLiteSession.endTransactionUnchecked(SQLiteSession.java:437) at android.database.sqlite.SQLiteSession.endTransaction(SQLiteSession.java:401) at android.database.sqlite.SQLiteDatabase.endTransaction(SQLiteDatabase.java:522) at com.squareup.sqlbrite.BriteDatabase$1.end(BriteDatabase.java:85) 

解决方案1:

您可以使用adb shell dumpsys dbinfo -v命令查看有关数据库的一些信息。

在我的例子中,我创建了一个小例子,它插入相同的记录两次强制SQLiteConstraintException

 MyDB db = new MyDB(this); // Insert the same record twice to force a SQLiteConstraintException db.insertIntoMyTable("1","MyName"); db.insertIntoMyTable("1","MyName"); 

这是我的Nexus 4中adb shell dumpsys dbinfo -v命令的输出(我不确定,但我认为设备之间的输出信息可能不同):

 Connection pool for /data/data/com.your.package.name/databases/MyDB: Open: true Max connections: 1 Available primary connection: Connection #0: connectionPtr: 0xffffffffb883aaf0 isPrimaryConnection: true onlyAllowReadOnlyOperations: false Most recently executed operations: 0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)" 1: [2015-11-13 17:59:16.227] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)" 2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"] 3: [2015-11-13 17:59:16.209] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)" 4: [2015-11-13 17:59:16.208] executeForLong took 1ms - succeeded, sql="PRAGMA user_version;" 5: [2015-11-13 17:59:16.208] prepare took 0ms - succeeded, sql="PRAGMA user_version;" 6: [2015-11-13 17:59:16.208] executeForString took 0ms - succeeded, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1" 7: [2015-11-13 17:59:16.207] execute took 1ms - succeeded, sql="CREATE TABLE IF NOT EXISTS android_metadata (locale TEXT)" 8: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint=100" 9: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint" 10: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit=524288" 11: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit" 12: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA synchronous" 13: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA journal_mode=PERSIST" 14: [2015-11-13 17:59:16.205] executeForString took 1ms - succeeded, sql="PRAGMA journal_mode" 15: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA foreign_keys" 16: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA page_size" Prepared statement cache: 0: statementPtr=0xffffffffb8839558, numParameters=0, type=1, readOnly=true, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1" Available non-primary connections:  Acquired connections:  Connection waiters:  

分析输出,在Most recently executed operations:我得到以下信息(一个记录成功插入,另一个记录失败):

 0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)" 2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"] 

解决方案2:

这个解决方案有点棘手,但您可以使用android.database.sqlite.SQLiteDebug类通过Java代码获取类似的信息。

如果你看一下这个,你会看到这个类被标记为@hide ,这意味着SQLiteDebug类被排除在API文档之外,但它仍然可以通过reflection访问。

因此,要打印SQLite数据库的调试信息,可以使用以下代码:

 // The messages will be printed as Log.ERROR using the tag "DB" Printer p = new LogPrinter(Log.ERROR, "DB"); // We will invoke the "dump" method of the "android.database.sqlite.SQLiteDebug" class // We eill use the "-v" parameter because we want the output to be verbose Class c = Class.forName("android.database.sqlite.SQLiteDebug"); Method method = c.getMethod("dump", new Class[]{Printer.class, String[].class}); method.invoke(null, p, new String[]{"-v"}); 

一个简单的例子来说明解决方案:

 MyDB db = new MyDB(this); // Insert the same record twice to force a SQLiteConstraintException db.insertIntoMyTable("1","MyName"); db.insertIntoMyTable("1","MyName"); try { Printer p = new LogPrinter(Log.ERROR, "DB"); Class c = Class.forName("android.database.sqlite.SQLiteDebug"); Method method = c.getMethod("dump", new Class[]{Printer.class, String[].class}); method.invoke(null, p, new String[]{"-v"}); } catch (Exception e) { Log.e("MyTag", e.getMessage()); } 

在这种情况下,我使用LogPrinter将调试信息转储到logcat,但您可以使用自己的Printer实现。

在我的Nexus 4中,logcat看起来像这样(我不确定,但我认为设备之间的输出信息可能不同):

 E/SQLiteLog(22296): (1555) abort at 10 in [INSERT INTO MyTable(name,_id) VALUES (?,?)]: UNIQUE constraint failed: MyTable._id E/SQLiteDatabase(22296): Error inserting name=MyName _id=1 E/SQLiteDatabase(22296): android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: MyTable._id (code 1555) E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method) E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:782) E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788) E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86) E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1471) E/SQLiteDatabase(22296): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1341) E/SQLiteDatabase(22296): at com.example.antonio.prueba3.MyDB.insertIntoMyTable(MyDB.java:32) E/SQLiteDatabase(22296): at com.example.antonio.prueba3.MainActivity.onCreate(MainActivity.java:24) E/SQLiteDatabase(22296): at android.app.Activity.performCreate(Activity.java:5990) E/SQLiteDatabase(22296): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) E/SQLiteDatabase(22296): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) E/SQLiteDatabase(22296): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) E/SQLiteDatabase(22296): at android.app.ActivityThread.access$800(ActivityThread.java:151) E/SQLiteDatabase(22296): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) E/SQLiteDatabase(22296): at android.os.Handler.dispatchMessage(Handler.java:102) E/SQLiteDatabase(22296): at android.os.Looper.loop(Looper.java:135) E/SQLiteDatabase(22296): at android.app.ActivityThread.main(ActivityThread.java:5254) E/SQLiteDatabase(22296): at java.lang.reflect.Method.invoke(Native Method) E/SQLiteDatabase(22296): at java.lang.reflect.Method.invoke(Method.java:372) E/SQLiteDatabase(22296): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) E/SQLiteDatabase(22296): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) E/DB (22296): Connection pool for /data/data/com.example.antonio.prueba3/databases/MyDB: E/DB (22296): Open: true E/DB (22296): Max connections: 1 E/DB (22296): Available primary connection: E/DB (22296): Connection #0: E/DB (22296): connectionPtr: 0xffffffffb883aaf0 E/DB (22296): isPrimaryConnection: true E/DB (22296): onlyAllowReadOnlyOperations: false E/DB (22296): Most recently executed operations: E/DB (22296): 0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)" E/DB (22296): 1: [2015-11-13 17:59:16.227] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)" E/DB (22296): 2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"] E/DB (22296): 3: [2015-11-13 17:59:16.209] prepare took 0ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)" E/DB (22296): 4: [2015-11-13 17:59:16.208] executeForLong took 1ms - succeeded, sql="PRAGMA user_version;" E/DB (22296): 5: [2015-11-13 17:59:16.208] prepare took 0ms - succeeded, sql="PRAGMA user_version;" E/DB (22296): 6: [2015-11-13 17:59:16.208] executeForString took 0ms - succeeded, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1" E/DB (22296): 7: [2015-11-13 17:59:16.207] execute took 1ms - succeeded, sql="CREATE TABLE IF NOT EXISTS android_metadata (locale TEXT)" E/DB (22296): 8: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint=100" E/DB (22296): 9: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA wal_autocheckpoint" E/DB (22296): 10: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit=524288" E/DB (22296): 11: [2015-11-13 17:59:16.207] executeForLong took 0ms - succeeded, sql="PRAGMA journal_size_limit" E/DB (22296): 12: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA synchronous" E/DB (22296): 13: [2015-11-13 17:59:16.206] executeForString took 0ms - succeeded, sql="PRAGMA journal_mode=PERSIST" E/DB (22296): 14: [2015-11-13 17:59:16.205] executeForString took 1ms - succeeded, sql="PRAGMA journal_mode" E/DB (22296): 15: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA foreign_keys" E/DB (22296): 16: [2015-11-13 17:59:16.204] executeForLong took 0ms - succeeded, sql="PRAGMA page_size" E/DB (22296): Prepared statement cache: E/DB (22296): 0: statementPtr=0xffffffffb8839558, numParameters=0, type=1, readOnly=true, sql="SELECT locale FROM android_metadata UNION SELECT NULL ORDER BY locale DESC LIMIT 1" E/DB (22296): Available non-primary connections: E/DB (22296):  E/DB (22296): Acquired connections: E/DB (22296):  E/DB (22296): Connection waiters: E/DB (22296):  

分析输出,我得到一个SQLiteConstraintException

 E/SQLiteDatabase(22296): android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: MyTable._id (code 1555) 

Most recently executed operations:我得到以下信息(成功插入一条记录,另一条记录失败):

 E/DB (22296): 0: [2015-11-13 17:59:16.227] executeForLastInsertedRowId took 1ms - failed, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"], exception="UNIQUE constraint failed: MyTable._id (code 1555)" E/DB (22296): 2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded, sql="INSERT INTO MyTable(name,_id) VALUES (?,?)", bindArgs=["MyName", "1"] 

希望能帮助到你。

您只需从设备中取出该SQLite文件 ,然后将其加载到SQLite浏览器应用程序中即可。 因此,您现在可以尝试执行相同的事务并查看正在发生的事情。

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