JDBC 批處理
阿新 • • 發佈:2018-10-18
!= count test .exe false upd code exceptio nal
主要是是
addBatch ,executeBatch ,clearBatch 三個方法.
官方示例代碼:
public void batchUpdate() throws SQLException { Statement stmt = null; try { this.con.setAutoCommit(false);//關閉commit stmt = this.con.createStatement();//創建statement stmt.addBatch( "INSERT INTO COFFEES " + "VALUES(‘Amaretto‘, 49, 9.99, 0, 0)"); stmt.addBatch( "INSERT INTO COFFEES " + "VALUES(‘Hazelnut‘, 49, 9.99, 0, 0)"); stmt.addBatch( "INSERT INTO COFFEES " + "VALUES(‘Amaretto_decaf‘, 49, " + "10.99, 0, 0)"); stmt.addBatch( "INSERT INTO COFFEES " + "VALUES(‘Hazelnut_decaf‘, 49, " + "10.99, 0, 0)"); int [] updateCounts = stmt.executeBatch();//編譯多條sql語句 this.con.commit();//commit,之後sql語句去哪不執行 } catch(BatchUpdateException b) { JDBCTutorialUtilities.printBatchUpdateException(b); } catch(SQLException ex) { JDBCTutorialUtilities.printSQLException(ex); } finally { if (stmt != null) { stmt.close(); } this.con.setAutoCommit(true); } }
JDBC 批處理