JavaÓû§»Øµ÷·½·¨Ïû³ýÈßÓà´úÂë
Ò». ¿´Ò»¶ÎÈßÓàµÄ´úÂë
public String login(HttpServletRequest request){
OperatorService operatorService = new OperatorService();
WebContext webContext= request.getSession().getAttribute("WEB_CONTEXT_KEY");
Connection conn=null;
try{
Conection conn =DBManager.getConnection();
if(webContext.getOperatorName.equals("123")){
// µÇ½³É¹¦
}
}catch(Throwable t){
//¼Ç¼ÈÕÖ¾
//Ìø×ªµ½Í³Ò»µÄ´íÎóÒ³Ãæ,²»ÄÜÈÃÓû§¿´µ½Òì³£Ò³Ãæ
//¹Ø±ÕConnection
if(conn!=null){
try{conn.close();}cath(SQLException ex){}
}
}
}
public String logOut(HttpServletRequest request){
OperatorService operatorService = new OperatorService();
WebContext webContext= request.getSession().getAttribute("WEB_CONTEXT_KEY");
try{
Conection conn =DBManager.getConnection();
operatorService.logout();
request.getSession().invalidate();
}catch(Throwable t){
//¼Ç¼ÈÕÖ¾
//Ìø×ªµ½Í³Ò»µÄ´íÎóÒ³Ãæ,²»ÄÜÈÃÓû§¿´µ½Òì³£Ò³Ãæ
//¹Ø±ÕConnection
if(conn!=null){
try{conn.close();}cath(SQLException ex){}
}
}
}
¶þ¡¢¿ÉÒÔ¿´µ½,ºìÉ«²¿·Ö´úÂëÍêÈ«ÊÇÈßÓàµÄ£¬ÏÂÃæÓûص÷·½·¨¼ò»¯Õⲿ·Ö´úÂë
1.Ïȶ¨ÒåÒ»¸ö»Øµ÷³éÏóÀà
public abstract class AppCallback {
/**
* »Øµ÷Ö´Ðз½·¨
*
* @return
*/
public String execute() {
&n
Ïà¹ØÎĵµ£º
create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ
......
JVM£º¼ÓÔØ¡¢Á´½ÓºÍ³õʼ»¯
JVMÒª½âÊÍJava×Ö½ÚÂ룬¾Í±ØÐë¶ÔËùÐèµÄÀàºÍ½Ó¿ÚÖ´ÐÐÈçÏÂ3²½²Ù×÷£º
(1) ¼ÓÔØ£ºJVMÔÚ¼ÓÔØÀàʱ£¬»á²éÕÒ¸ÃÀà»ò¸Ã½Ó¿ÚµÄ¶þ½øÖƱíʾ£¬²¢¸ù¾ÝÕÒµ½µÄ¶þ½øÖƱíʾ(ͨ³£ÊÇÓÉJava±àÒëÆ÷´´½¨µÄÀàÎļþ)´´½¨Ò»¸öClass¶ÔÏ󡣸ÃClass¶ÔÏóÖзâ×°ÁËÀà»ò½Ó¿ÚµÄÔËÐÐʱ״̬¡£
(2) Á´½Ó£ºÁ´½ÓÕâÒ»¹ý³ÌÊÇָȡµÃÒѼÓÔØµÄ ......
2006-01-18 13:53×÷Õߣº³ö´¦£º²©¿ÍÔ°ÔðÈα༣º·½ÖÛ http://dev.yesky.com/178/2278678.shtml ÒýÑÔ
JavaµÄ¶ÑÊÇÒ»¸öÔËÐÐʱÊý¾ÝÇø£¬ÀàµÄʵÀý(¶ÔÏó)´ÓÖзÖÅä¿Õ¼ä¡£JavaÐéÄâ»ú(JVM)µÄ¶ÑÖд¢´æ×ÅÕýÔÚÔËÐеÄÓ¦ÓóÌÐòËù½¨Á¢µÄËùÓжÔÏó£¬ÕâЩ¶ÔÏóͨ¹ýnew¡¢newarray¡¢anewarrayºÍmultianewarrayµÈÖ¸ÁÁ¢£¬µ«ÊÇËüÃDz»ÐèÒ ......
package algorithm.binarytree;
import java.util.Arrays;
import java.util.Stack;
import util.ArrayUtil;
import util.OutputUtil;
public class BinTree {
private BinNode root = null;
public BinTree()
{
}
&nb ......
µ±spider³ÌÐò·ÃÎʵ½Ò»¸öÍøÒ³£¬±ØÐë½øÐÐÒÔϼ¸Ïî»ù±¾´¦Àí£º³éÈ¡ÍøÒ³Öаüº¬µÄÎı¾;³éÈ¡ÍøÒ³Öаüº¬µÄURL£¬²¢½«ÆäÇø·ÖÎªÍøÒ³Öаüº¬µÄÎı¾£»³éÈ¡ÍøÒ³Öаüº¬µÄURL£¬²¢½«ÆäÇø·ÖÎªÍøÕ¾ÄÚURL»òÍøÕ¾ÍâURL¡£
2.2¸÷Ö÷Òª¹¦ÄÜ Ä£¿é£¨ÀࣩÉè¼Æ
2.2.1 spiderÀà
¸ÃÀàΪÖ÷À࣬¼Ì³Ð×ÔÏß³ÌÀà¡£Ëü±¾Ê²¢²»×ö»ñÈ¡ÍøÒ³µÄ¾ßÌå ......