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package DBbean;
import java.sql.*;
public class ConnBean
{
private Connection con;
//³õʼ»¯Á¬½Ó¡£
public ConnBean()
{
        
  try
  {
   Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
   String url="jdbc:oracle:thin:@localhost:1521:orcl";
         String user="scott";
         String password="tiger";
         con= DriverManager.getConnection(url,user,password);
  }
  catch (InstantiationException e)
  {
      e.printStackTrace();
  } catch (IllegalAccessException e)
  {
      e.printStackTrace();
  }
  catch(ClassNotFoundException e)
   {
    System.out.println("DRIVER NOT FOUND!");
    con=null;
   }
  catch(SQLException e)
   {
    con=null;
   }
    
}
//²éѯÊý¾Ý¿â
public  ResultSet getContact(String id)
{
  try
  {
   Statement stm=con.createStatement();
   ResultSet result=stm.executeQuery("select * from student where id='"+id+"'");
   return result;
  }
  catch(Exception e)
  {
  }
  return null;
}
}  


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Oracle ÈÕÆÚ²éѯÓï¾äС½á

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select to_char(sysdate,'day') from dual;
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select to_char(sysdate,'dd') from dual;
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select to_char(sysdate,'hh24') from dual;
²éѯʱ¼ä:
select to_char(sysdate,'hh24:mi:ss') from dual;
²éѯÈÕÆÚʱ¼ä:
select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;
²é ......

oracle ³£¼ûºǫ́½ø³Ì

³£¼ûºǫ́½ø³Ì°üÀ¨:
• Êý¾Ý¿âд½ø³Ì (DBWn):½«Êý¾Ý¿â»º³åÇø¸ßËÙ»º´æÖеľ­¹ýÐ޸ĵĻº³åÇø(»ÒÊý¾Ý»º ³åÇø)ÒÔÒì²½·½Ê½Ð´Èë´ÅÅÌ
• ÈÕ־д½ø³Ì (LGWR):½«ÈÕÖ¾»º³åÇøÖгÆÎªÖØ×öÐÅÏ¢µÄ»Ö¸´ÐÅϢдÈë´ÅÅÌÉϵÄÖØ×öÈÕ Ö¾Îļþ
• ¼ì²éµã½ø³Ì (CKPT):ÔÚ¿ØÖÆÎļþºÍÿ¸öÊý¾ÝÎļþÍ·ÖмǼ¼ì²éµãÐÅÏ¢
• ϵͳ¼àÊÓÆ÷½ø³ ......

´¦Àístruts servlet jsp ÖÐÎÄÂÒÂëÎÊÌâ


Õë¶ÔgetÌá½»·½Ê½¡¢ÂÒÂë½â¾ö·½Ê½
tomcat5ÖУ¬ÎªÁ˱£Ö¤getÊý¾Ý²ÉÓÃGBK±àÂ룬ÔÚserver.xmlÖнøÐÐÁËÈçÏÂÉèÖ㺸ıäwebÈÝÆ÷ÇëÇóÊý¾ÝµÄ±àÂë¸ñʽ(¶ÔpostÇëÇó·½Ê½ÎÞЧ)
    <Connector port="8080" maxHttpHeaderSize="8192"
            &nbs ......

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<%
org.apache.struts.util.TokenProcessor.getInstance().saveToken(request);
%>
<input type="hidden" name="org.apache.struts.taglib.html.TOKEN" value="<%=session.getAttribute("org.apache.struts.action.TOKEN")%>" />

struts actionÀï
if(isTokenValid(request ......
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