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こんにちは私は、クエリの問題に例外の後にプロシージャを復元しました。 これはexceptonは私が新しい例外をスローunSetEditingFleet中にoccuresときに起こるものをしようとするコード（それの主要部分）ロック待機タイムアウトが例外のキャッチ後に超過トランザクションメソッド
@Override
@Async
@Transactional(rollbackFor=Exception.class)
public void modifyFleet(User currentUser, FleetForm fleetForm) throws Exception {
//Keep the progress status on DB
fleetServices.setEditingProgress(fleetForm.getIdFleet(), "Start editing fleet");
Fleet oldFleet = fleetServices.findById(fleetForm.getIdFleet());
//some INSTRUCTIONS
if (!(backupFolderFile.mkdirs()))
throw new FileSystemException("Error making the folder backup");
try{
//Keep the progress status on DB
fleetServices.setEditingProgress(fleetForm.getIdFleet(), "Backup...");
FileUtils.copyDirectory(fleetFile, new File(backupFolder));
//Create fleet with new value
Fleet newFleet = newFleetConstructor(fleetForm, oldFleet);
//Change operation for all cars of the application
int i = 0;
for (Car car:oldFleet.getCars()){
//some INSTRUCTIONS
//Keep the progress status on DB
fleetServices.setEditingProgress(fleetForm.getIdFleet(), "Work on car "+ car.getCarType().getIdCarType() + car.getId()+ " (" + i +" of " + oldFleet.getCars().size() +"): Editing acquisitions file" );
}
fleetServices.setEditingProgress(oldFleet.getIdFleet(), "Updating file system fleet path");
utils.unSetEditingFleet(oldFleet.getIdFleet());
// throw new Exception("fleet has been restored Exception");
}catch(Exception e){
//Keep the progress status on DB
fleetServices.setEditingProgress(oldFleet.getIdFleet(), "Sorry an error occured during the procedure, wait until restore is ended!");
//Restore the file system procedure
restoreProcedure(oldFleet.getIdFleet(), fleetFile, backupFolderFile);
//Keep the progress status on DB
fleetServices.setEditingProgress(oldFleet.getIdFleet(), "");
utils.unSetEditingFleet(oldFleet.getIdFleet());
//Even with this exception set the fleet as not in editing
throw new EditingException("fleet has been restored!");
}
}
です：
@Transactional
public void unSetEditingFleet(Integer idFleet) throws QueryException {
try {
fleetServices.setEditingFleet(idFleet, false);
throw new Exception();
// for(Car car : carServices.findByFleetIdFleet(idFleet)){
// carServices.setEditingCar(car.getIdCar(), false); //Unset cars associated with the fleet
// }
}catch(Exception e){
throw new QueryException(e);
}
}
命令fleetServices.setEditingProgress例外のキャッチが発生した後、例外：
Caused by: java.sql.SQLException: Lock wait timeout exceeded; try restarting transaction
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3847)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3783)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2447)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2594)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2545)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1901)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2113)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2049)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2034)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:208)
... 54 more
setEditinProgressのコードは次のとおりです。
@Override
@Transactional(propagation = Propagation.REQUIRES_NEW) //necessary to set immediately the text into the database inside a transactional method. This annotation create a new transaction
public void setEditingProgress(Integer idFleet, String editingProgress) {
fleetRepository.setEditingProgress(idFleet, editingProgress);
}
これはデータベースに、操作の進捗状況を設定するため、ユーザーは進捗状況を知ることができます。 なぜキャッチ後にこの例外が発生するのですか？どうすれば修正できるのか知っていますか？