是否可以从Android SQLiteConstraintException获取特定的错误详细信息?
对于某些数据,我得到了以下错误,概念非常清楚: android.database.sqlite.SQLiteConstraintException: FOREIGN KEY constraint failed (code 787) 解决方案1: 您可以使用是否可以从Android SQLiteConstraintException获取特定的错误详细信息?,android,sqlite,sqlbrite,Android,Sqlite,Sqlbrite,对于某些数据,我得到了以下错误,概念非常清楚: android.database.sqlite.SQLiteConstraintException: FOREIGN KEY constraint failed (code 787) 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,我创建了一个小示例,它两次插入相同的记录,强制执行sqliteconstraintextException: MyDB db = new MyDB(
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,我创建了一个小示例,它两次插入相同的记录,强制执行sqliteconstraintextException
:
MyDB db = new MyDB(this);
// Insert the same record twice to force a SQLiteConstraintException
db.insertIntoMyTable("1","MyName");
db.insertIntoMyTable("1","MyName");
E/SQLiteDatabase(22296): android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: MyTable._id (code 1555)
这是Nexus4中adb shell dumpsys dbinfo-v命令的输出(我不确定,但我认为不同设备的输出信息可能不同):
解决方案2:
这个解决方案有点棘手,但是您可以使用android.database.sqlite.SQLiteDebug
类通过Java代码获得类似的信息
如果查看一下,您将看到这个类被标记为@hide
,这意味着SQLiteDebug类被从API文档中排除,但仍然可以通过反射访问它
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"});
分析输出,我得到一个sqliteconstraintextException
:
MyDB db = new MyDB(this);
// Insert the same record twice to force a SQLiteConstraintException
db.insertIntoMyTable("1","MyName");
db.insertIntoMyTable("1","MyName");
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(一条记录成功插入,另一条记录失败):
希望能有所帮助。您可以简单地将其加载到SQLite浏览器应用程序中。因此,您现在可以尝试执行相同的事务,并查看发生了什么
SQLite浏览器:
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());
}
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): <none>
E/DB (22296): Acquired connections:
E/DB (22296): <none>
E/DB (22296): Connection waiters:
E/DB (22296): <none>
E/SQLiteDatabase(22296): android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: MyTable._id (code 1555)
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"]