JDBC Batch的使用
?? 检测数据库是否支持batch
?? DatabaseMetaData.supportsBatchUpdates()
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?? 然后就是三个比较有用的方法：
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?? addBatch: 将Statement, PreparedStatement, and CallableStatement添加进batch里面
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?? executeBatch: 返回各个语句的执行结果
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?? clearBatch: 将batch里面的sql语句清除掉
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?? 在这个里面有一个值得注意的是要设置connection的事务提交类型
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?? setAutoCommit(false)为手动提交
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// Create statement objectStatement stmt = conn.createStatement();// Set auto-commit to falseconn.setAutoCommit(false);// Create SQL statementString SQL = "INSERT INTO Employees (id, first, last, age) " + "VALUES(200,'Zia', 'Ali', 30)";// Add above SQL statement in the batch.stmt.addBatch(SQL);// Create one more SQL statementString SQL = "INSERT INTO Employees (id, first, last, age) " + "VALUES(201,'Raj', 'Kumar', 35)";// Add above SQL statement in the batch.stmt.addBatch(SQL);// Create one more SQL statementString SQL = "UPDATE Employees SET age = 35 " + "WHERE id = 100";// Add above SQL statement in the batch.stmt.addBatch(SQL);// Create an int[] to hold returned valuesint[] count = stmt.executeBatch();//Explicitly commit statements to apply changesconn.commit();?
