JAVAÁ¬½ÓÊý¾Ý¿â Oracle
±¾ÎÄÊ×ÏȽéÉÜjavaÁ¬½ÓoracleҪעÒâµÄ¼¸µã£¬È»ºó½éÉܼ¸ÖÖ³£ÓõÄÁ¬½Ó·½Ê½¡£
Ò»¡¢¼¸µã×¢Ò⣺
1¡¢ÔÚ¿Í»§¶ËÈí¼þ¿ª·¢ÖÐʹÓÃThinÇý¶¯³ÌÐò
ÔÚ¿ª·¢JavaÈí¼þ·½Ã棬OracleµÄÊý¾Ý¿âÌṩÁËËÄÖÖÀàÐ͵ÄÇý¶¯³ÌÐò£¬¶þÖÖÓÃÓÚÓ¦ÓÃÈí¼þ¡¢applets¡¢servletsµÈ¿Í»§¶ËÈí¼þ£¬ÁíÍâ¶þÖÖÓÃÓÚÊý¾Ý¿âÖеÄJava´æ´¢¹ý³ÌµÈ·þÎñÆ÷¶ËÈí¼þ¡£ÔÚ¿Í»§»ú¶ËÈí¼þµÄ¿ª·¢ÖУ¬ÎÒÃÇ¿ÉÒÔÑ¡ÔñOCIÇý¶¯³ÌÐò»òThinÇý¶¯³ÌÐò¡£OCIÇý¶¯³ÌÐòÀûÓÃJava±¾µØ»¯½Ó¿Ú£¨JNI£©£¬Í¨¹ýOracle¿Í»§¶ËÈí¼þÓëÊý¾Ý¿â½øÐÐͨѶ¡£ThinÇý¶¯³ÌÐòÊÇ´¿JavaÇý¶¯³ÌÐò£¬ËüÖ±½ÓÓëÊý¾Ý¿â½øÐÐͨѶ¡£½¨ÒéʹÓÃThinÇý¶¯³ÌÐò£¬ÒòΪͨ¹ý¶à´Î²âÊÔ·¢ÏÖ£¬ÔÚͨ³£Çé¿öÏ£¬ThinÇý¶¯³ÌÐòµÄÐÔÄܶ¼³¬¹ýÁËOCIÇý¶¯³ÌÐò¡£
2¡¢¹Ø±Õ×Ô¶¯Ìá½»¹¦ÄÜ£¬Ìá¸ßϵͳÐÔÄÜ
ÔÚµÚÒ»´Î½¨Á¢ÓëÊý¾Ý¿âµÄÁ¬½Óʱ£¬ÔÚȱʡÇé¿öÏ£¬Á¬½ÓÊÇÔÚ×Ô¶¯Ìύģʽϵġ£ÎªÁË»ñµÃ¸üºÃµÄÐÔÄÜ£¬¿ÉÒÔͨ¹ýconn.setAutoCommit(false)¹Ø±Õ×Ô¶¯Ìá½»¹¦ÄÜ¡£Ò»µ©¹Ø±ÕÁË×Ô¶¯Ìá½»¹¦ÄÜ£¬ÎÒÃǾÍÐèҪͨ¹ýµ÷ÓÃConnectionÀàµÄcommit()ºÍrollback()·½·¨À´È˹¤µÄ·½Ê½¶ÔÊÂÎñ½øÐйÜÀí¡£
3¡¢¼¸ÖÖ²Ù×÷sqlµÄ¶ÔÏó£ºStatement,PreparedStatement,CallableStatement
Statement¶ÔÏó£ºÃ¿´ÎÖ´ÐÐsql£¬Êý¾Ý¿â¶¼Òª¶Ô¸Ãsql±àÒ룬¶ÔÓÚ½öÖ´ÐÐÒ»´Î²Ù×÷²¢·µ»Ø½á¹ûµÄÇéÐΣ¬Ð§ÂʸßÓÚPreparedStatement
ʹÓ÷½Ê½£º
Statement stmt =null;
ResultSet rs = stmt.executeQuery(sql); //²éѯ
int result = stmt.executeQuery(sql); //Ð޸ġ¢É¾³ý¡¢²åÈë
PreparedStatement¶ÔÏó£ºÔ¤±àÒëµÄ£¬¶ÔÓÚ¾³£»áÖØ¸´Ö´ÐÐÏàͬµÄSQLÓï¾ä£¬½¨ÒéʹÓ᣶ÔÓÚÅúÁ¿´¦ÀíËü¿ÉÒÔ´ó´óÌá¸ßЧÂÊ. Òò´ËËüÒ²½ÐJDBC´æ´¢¹ý³Ì¡£
ʹÓ÷½Ê½£º
²éѯ£ºÊÊÓÃÓÚ¶à´ÎÖØ¸´²éѯÀàËÆµÄsqlÓï¾ä
PreparedStatemen
Ïà¹ØÎĵµ£º
µÚÒ»ÖÖ·½·¨Îª³£¼ûÇÒÒ×ÓÚÉÏÊÖ
1¡¢ÔÚÓ¦Óÿª·¢ÖУ¬¾³£ÐèҪһЩÖÜÆÚÐԵIJÙ×÷£¬±ÈÈçÿ5·ÖÖÓÖ´ÐÐijһ²Ù×÷
µÈ¡£¶ÔÓÚÕâÑùµÄ²Ù×÷×î·½±ã¡¢¸ßЧµÄʵÏÖ·½Ê½¾ÍÊÇʹÓÃjava.util.Timer¹¤¾ßÀà¡£
private java.util.Timer timer;
timer
= new Timer(true);
timer.schedule(
new java.util.TimerTask() {
public void run() { // ......
×¢Òâ,Óõ½ÁËÄÚ²¿Àà:
new Thread
(
new Runnable()
{
public void run()
{
try
&n ......
Ê×ÏÈÇë´ó¼Ò¿´¿´ÏÂÃæÁ½¶Î´úÂëÓÐÊ²Ã´Çø±ð£º
´úÂë1£º
List<Task> tasks = new ArrayList<Task>();
Task[] allTask = DemoData.getTasksData();
for(int i=0;i<allTask.length;i++){
tasks.add(allTask[i]);
}
------------------------------------- ......
ºÜ¶àµÄÎı¾Îļþ»áÓв»Í¬µÄ±àÂë¸ñʽ£¬Ôì³ÉÕâÖÖ±àÂë²îÒìµÄ¿ÉÄÜÊÇϵͳµÄ²îÒ죬¿ÉÄÜÊÇÔÚ±£´æÎļþʱ²ÉÓÃÌØ¶¨µÄ×Ö·û¼¯±àÂëÀ´±£´æ¡£ÕâʱÎÒÃÇÀûÓÃJavaÓïÑÔÀ´´ò¿ªÕâЩÎı¾Ê±£¬Èç¹û²»Ê¹ÓÃÕýÈ·µÄ×Ö·û¼¯½âÂëÆ÷´ò¿ª£¬¿Ï¶¨»á³öÏÖÂÒÂë¡£ºÃÔÚjava.io°üÌṩÁËÒ»¸öjava.io.InputStreamReaderÀàÀ´Ö§³ÖÖ¸¶¨Îı¾× ......
¸ÄÒ»¸öÕâÑùµÄÌâÄ¿Õýʽ¸æËßÄ㣬ÎÒÖÕÓÚ¶¯ÊּǼһЩjavaµÄ±Ê¼ÇÁË¡£ÊµÔںܾÃûÓÐдjavaÁË¡£¹þ¹þ£¬²»ºÃÒâ˼£¬ÎªÁËflash ºǫ́ÓиöÖ§³Ö£¬java Õⲿ·Ö»¹ÊÇҪѧһµã£¬µ«²»ÊǺÜÖØµãѧ¡£Õⲿ·Ö¶«Î÷£¬ÎÒ²»ÊìϤ£¬Ò²ÔÚÂýÂý¼Ç¼¡£×Ô¼º¿´µÄ±Ê¼Ç£¬ËùÒÔÒªÊÇÄã²»ÊÇɵB£¬×îºÃ²»Òª¿´¡£
ÔÚ½ñÍíÁ·Ï°µÄʱºò£¬³¢ÊÔÈ¥Á¬½Ó¿É°®µÄ ......