transaction.begin();
Condition condi = new Condition();
condi.add(new ConditionItem("ID","=",id));
SQL sql = sqlBuilder.constructSQLForDelete("Messages", condi);
if(logger.isDebugEnabled()){
logger.debug("通过SQLBuilder构建的SQL: " + sql.getSQLString()+" ");
}
/* 执行SQ语句 */
Object rs = sqlExecutor.execute(sql);