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 constraint Failed (code 787)

但是,这并没有帮助我找到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)日志记录,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)时捕获的异常(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)

解决方法

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,?)"
    2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded,"1"]
    3: [2015-11-13 17:59:16.209] prepare took 0ms - succeeded,?)"
    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:
<none>
Acquired connections:
<none>
Connection waiters:
<none>

分析输出,在最近执行的操作中：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,exception="UNIQUE constraint Failed: MyTable._id (code 1555)"
2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded,"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this,你会发现这个类被标记为@hide,这意味着sqliteDebug类被排除在API文档之外,但它仍然可以通过反射访问.

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");

try {
    Printer p = new LogPrinter(Log.ERROR,"DB");
    Class<?> c = Class.forName("android.database.sqlite.sqliteDebug");
    Method method = c.getMethod("dump",String[].class});
    method.invoke(null,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,?)]: 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,exception="UNIQUE constraint Failed: MyTable._id (code 1555)"
E/DB      (22296):         1: [2015-11-13 17:59:16.227] prepare took 0ms - succeeded,?)"
E/DB      (22296):         2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded,"1"]
E/DB      (22296):         3: [2015-11-13 17:59:16.209] prepare took 0ms - succeeded,?)"
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,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):     <none>
E/DB      (22296):   Acquired connections:
E/DB      (22296):     <none>
E/DB      (22296):   Connection waiters:
E/DB      (22296):     <none>

分析输出,我得到一个sqliteConstraintException：

E/sqliteDatabase(22296): android.database.sqlite.sqliteConstraintException: UNIQUE constraint Failed: MyTable._id (code 1555)

在最近执行的操作中：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,exception="UNIQUE constraint Failed: MyTable._id (code 1555)"
E/DB      (22296):         2: [2015-11-13 17:59:16.209] executeForLastInsertedRowId took 18ms - succeeded,"1"]

希望能帮助到你.

原文链接：https://www.f2er.com/android/318028.html

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

解决方法

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