Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

javaÊ÷Ðνṹ

×î½ü¿´µ½Ò»¸öÓÐÒâ˼µÄÊ÷Ðνṹ£¬ÎªÃ¿¸ö½ÚµãÌí¼ÓÁËlftºÍrgtÁ½¸öÊôÐÔ¡£ÕâÑù²éÕҸýڵãµÄ×ӽڵ㡢²éÕҸýڵãËùÓи¸½Úµã£¬¾Í²»ÓÃÈ¥µÝ¹é²éѯ£¬Ö»ÐèÒªÓÃbetween¡¢andÓï¾ä¾Í¿ÉÒÔʵÏÖ¡£ÏÂÃæÒÔ´´½¨Ò»¸öÀ¸Ä¿Ê÷ΪÀý£¬ÒÔÏÂÊÇÎÒµÄÀí½â¡£
¡¡¡¡Ò»°ãÀ´½²£¬ÎÒÃÇ´´½¨À¸Ä¿Ê÷µÄʱºò£¬´ó¶àÖ»ÐèÒªÒ»¸öÍâ¼üparentidÀ´Çø·Ö¸Ã½ÚµãÊôÓÚÄĸö¸¸½Úµã¡£Êý¾Ý¿âµÄÉè¼ÆÈçÏÂͼ£º
ÕâÑùÒ»À´£¬


1.²éÕҸýڵãµÄËùÓÐ×ӽڵ㣬ÔòÐèÒª²ÉÓÃsqlµÄµÝ¹éÓï¾ä£º

Sql´úÂë
select * from tableName connect by prior id=sj_parent_id start with  id=1  
select * from tableName connect by prior id=sj_parent_id start with id=1
 (oracle Ð´·¨£¬mysqlĿǰ²»Ö§³Ö£¬Èç¹ûmysqlÏë²éÕÒÊ÷ÐΣ¬¿ÉÒÔÀûÓô洢¹ý³Ì).

2.²éÕҸýڵãµÄ¸¸½ÚµãµÄsqlµÝ¹éÓï¾ä£º

Sql´úÂë
select * from tableName connect by prior sj_parent_id =id start with  id=1  
select * from tableName connect by prior sj_parent_id =id start with id=1
 
¡¡Èç¹ûÊý¾ÝÁ¿¹ý´ó»òÕß²ã´ÎÌ«¶à£¬ÄÇôÕâÑù²Ù×÷ÊÇ»áÓ°ÏìÐÔÄܵġ£

¡¡¡¡“ÈκÎÊ÷Ðνṹ¶¼¿ÉÒÔÓöþ²æÊ÷À´±íʾ”¡£ÆäʵÎÒÃÇ´´½¨µÄÀ¸Ä¿Ê÷¾ÍÊÇÒ»¸ö¼òÐ͵Ķþ²æÊ÷¡£¸ù¾ÝÊý¾Ý½á¹¹ÀïÃæ¶þ²æÊ÷µÄ±éÀú£¬ÔÙÉÔ΢ÐÞ¸ÄÏ£¬½«Êý¾Ý¿âÉè¼ÆÈçÏÂͼËùʾ£º

ÕâÑùÎÒÃDzéÕҸýڵãµÄËùÓÐ×ӽڵ㣬ÔòÖ»ÐèÒª²éÕÒidÔÚlftºÍrgtÖ®¼äµÄËùÓнڵ㼴¿É¡£
<!--EndFragment-->
Sql´úÂë
select * from tb_subject s,tb_subject t where s.lft between t.lft and t.rgt and t.id=1  
select * from tb_subject s,tb_subject t where s.lft between t.lft and t.rgt and t.id=1
 
2.²éÕҸýڵãµÄËùÓи¸½ÚµãµÄsqlÓï¾äΪ£º
<!--EndFragment-->
Sql´úÂë
select s.* from tb_subject s,tb_subject t where s.lft<t.lft and (s.rgt-s.lft)>1 and s.rgt>t.rgt and t.id=1  
select s.* from tb_subject s,tb_subject t where s.lft<t.lft and (s.rgt-s.lft)>1 and s.rgt>t.rgt and t.id=1
 
¡¡ÏÂÃæÀ


Ïà¹ØÎĵµ£º

JavaÖØÐ´ÓëÖØÔØ

ÖØÐ´µÄÖ÷ÒªÓŵãÊÇÄܹ»¶¨Òåij¸ö×ÓÀàÌØÓеÄÌØÕ÷:
       Èç:
    public class Father
    {
             public void speak()
         &nb ......

java·´Éä

reflection: Ö¸ÎÒÃÇ¿ÉÒÔÓÚjava³ÌÐòÖ´ÐÐÆÚÔØÈ롢֪̽¡¢Ê¹ÓñàÒëÆÚ¼äÍêȫδ֪µÄclasses.»»¾ä»°Ëµ£¬java³ÌÐò¿ÉÒÔÔØÈëÒ»¸öÖ´ÐÐÆÚ²ÅµÃÖªÃû³ÆµÄclass,»ñϤÆäÍêÕû¹¹Ô죨µ«²»°üÀ¨methods¶¨Ò壩£¬²¢Éú³ÉʵÌå¡¢»ò¶ÔÆäfieldsÉèÖµ¡¢»ò»½ÆðÆämethods¡£ ......

DWRÖÐJava·½·¨µÄ²ÎÊý¼°·µ»ØÖµ

DWRʹÓÃÆª
1¡¢µ÷ÓÃûÓзµ»ØÖµºÍ²ÎÊýµÄJava·½·¨
1.1¡¢dwr.xmlµÄÅäÖÃ
Xml´úÂë
<dwr>  
  <allow>  
    <create creator="new" javascript="testClass" >  
      <param name="class" value= ......

java»·¾³±äÁ¿ÅäÖÃ[ÕûÀí]

JDKµÄ°²×°Â·¾¶
-------------
±äÁ¿Ãû JAVA_HOME
±äÁ¿ÖµÊ¾Àý D:\Program Files\Java\jdk1.6.0;
ËÑË÷ÀàµÄĿ¼
------------
±äÁ¿Ãû CLASSPATH
±äÁ¿ÖµÊ¾Àý D:\Program Files\Java\jdk1.6.0\lib\tools.jar;
    D:\Program Files\Java\jdk1.6.0\lib\dt.jar;
JdkµÄbinĿ¼
------------
±äÁ¿Ãû PATH(Ò ......

JAVAËÄÖÖ»ù±¾ÅÅÐòµÄ×ܽá

JAVAËÄÖÖ»ù±¾ÅÅÐò,°üÀ¨Ã°ÅÝ·¨,²åÈë·¨,Ñ¡Ôñ·¨,SHELLÅÅÐò·¨.ÆäÖÐÑ¡Ôñ·¨ÊÇðÅÝ·¨µÄ¸Ä½ø,SHELLÅÅÐò·¨ÊÇ ²åÈë·¨µÄ¸Ä½ø.ËùÒÔ´Ó¸ù±¾ÉÏÀ´Ëµ¿ÉÒÔ¹éÄÉΪÁ½ÖÖ²»Í¬µÄÅÅÐò·½·¨:¼´:²åÈë·¨£¦Ã°ÅÝ·¨
Ò» ²åÈë·¨:±éÀúÅÅÐò¼¯ºÏ£¬Ã¿µ½Ò»¸öÔªËØÊ±£¬¶¼Òª½«Õâ¸öÔªËØÓëËùÓÐËü֮ǰµÄÔªËØ±éÀú±È½ÏÒ»±é£¬È÷ûºÏÅÅÐò˳ÐòµÄÔªËØ°¤¸öÒÆ¶¯µ½µ±Ç°·¶Î§ÄÚËü×î ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ