ThreadLocal solving concurrency problems for multithreaded threads + transactional processing

1 Importjava.sql.Connection;2 Importjava.sql.SQLException;3 4  Public classTranmanager {5     Private StaticThreadlocal<connection> tl=6                     NewThreadlocal<connection>(){7         /**8 * Internal Method9 * Returns the initial value of the local variable of the thread backTen * Initializes the thread, which is called every time get () or set (object).  One          */ A         protectedConnection InitialValue () { -             Try { -                 returndaoutils.getconn (); the}Catch(Exception e) { - e.printstacktrace (); -                 return NULL; -             } +         } -     }; +     PrivateTranmanager () {} A      Public StaticConnection Getconn () { at         returntl.get (); -     } -     /** -      * @returnTurn on manual commit transactions, - * @false: Handing SQL commands to application management -      */ in      Public Static voidStarttran () { -         Try { toTl.get (). Setautocommit (false); +}Catch(SQLException e) { - e.printstacktrace (); the         } *     } $     /**Panax Notoginseng      * @returnrolling back -      */ the      Public Static voidRollbacktran () { +         Try { A tl.get (). rollback (); the}Catch(SQLException e) { + e.printstacktrace (); -         } $     } $     /** -      * @returnExecution -      */ the      Public Static voidCommittran () { -         Try {Wuyi Tl.get (). commit (); the}Catch(SQLException e) { - e.printstacktrace (); Wu         } -     } About     /** $      * @returnClose -      */ -      Public Static voidrelease () { -         Try { A Tl.get (). Close (); +Tl.remove ();//Map{tl:conn} the}Catch(SQLException e) { - e.printstacktrace (); $         } the     } the     /*Public void Rollbacktran (SavePoint sp) { the try { the Conn.rollback (SP); - conn.commit (); in } catch (SQLException e) { the e.printstacktrace (); the         } About     }*/ the}

ThreadLocal solving concurrency problems for multithreaded threads + transactional processing