📄 12.2 servlet事件监听器.mht
字号:
)+"','"+arg0.getValue()+"')");</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt"> =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt"> =20
public void sessionCreated(HttpSessionEvent arg0) {</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
//Http=BB=E1=BB=B0=B5=C4=B4=B4=BD=A8=BC=E0=CC=FD</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
users++;  =
; =
&=
nbsp; &n=
bsp; &nb=
sp; &nbs=
p; =20
//=B4=B4=BD=A8=D2=BB=B8=F6=BB=E1=BB=B0=A3=AC=B0=D1users=B1=E4=C1=BF=BC=D3=
1</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
print("sessionCreated('"+arg0.getSession().getId()+"'),=C4=BF=C7=B0=D3=B5=
=D3=D0"+users+"=B8=F6=D3=C3=BB=A7");</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
context.setAttribute("users",new=20
Integer(users)); =20
//=B0=D1=BB=E1=BB=B0=CA=FD=C9=E8=D6=C3=B5=BDServletContext=B5=C4=CA=F4=D0=
=D4users=D6=D0</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt"> =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt"> =20
public void sessionDestroyed(HttpSessionEvent arg0) {</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
//Http=BB=E1=BB=B0=B5=C4=CA=CD=B7=C5=BC=E0=CC=FD</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
users--;  =
; =
&=
nbsp; &n=
bsp; &nb=
sp; &nbs=
p; =20
//=CA=CD=B7=C5=D2=BB=B8=F6=BB=E1=BB=B0=A3=AC=B0=D1users=B1=E4=C1=BF=BC=F5=
1</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
print("sessionDestroyed('"+arg0.getSession().getId()+"'),=C4=BF=C7=B0=D3=B5=
=D3=D0"+users+"=B8=F6=D3=C3=BB=A7");</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.7pt">  =
; =20
context.setAttribute("users",new=20
Integer(users)); =20
//=B0=D1=BB=E1=BB=B0=CA=FD=C9=E8=D6=C3=B5=BDServletContext=B5=C4=CA=F4=D0=
=D4users=D6=D0</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
public void contextInitialized(ServletContextEvent arg0) {</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
//=B8=C3=B7=BD=B7=A8=CA=B5=CF=D6=C1=CBServletContextListener=BD=D3=BF=DA=B6=
=A8=D2=E5=B5=C4=B7=BD=B7=A8=A3=AC=B6=D4ServletContext=BD=F8=D0=D0=B3=F5=CA=
=BC=BB=AF</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
this.context =3D=20
arg0.getServletContext(); =
&=
nbsp; =20
//=B3=F5=CA=BC=BB=AFServletContext=B6=D4=CF=F3</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
print("ServletContext=B3=F5=CA=BC=BB=AF......"); &=
nbsp; &n=
bsp; &nb=
sp; =20
//=B4=F2=D3=A1=B3=F6=B8=C3=B7=BD=B7=A8=B5=C4=B2=D9=D7=F7=D0=C5=CF=A2</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
public void contextDestroyed(ServletContextEvent arg0) {</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
//=BC=E0=CC=FDServlet=C9=CF=CF=C2=CE=C4=B1=BB=CA=CD=B7=C5</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
this.context =3D=20
null; &n=
bsp; &nb=
sp; &nbs=
p;  =
; =
=20
//=CA=CD=B7=C5ServletContext=B6=D4=CF=F3</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
print("ServletContext=B1=BB=CA=CD=B7=C5......"); &=
nbsp; &n=
bsp; &nb=
sp; =20
//=B4=F2=D3=A1=B3=F6=B8=C3=B7=BD=B7=A8=B5=C4=B2=D9=D7=F7=D0=C5=CF=A2</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
private void print(String message){</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
//=B5=F7=D3=C3=B8=C3=B7=BD=B7=A8=D4=DAtxt=CE=C4=BC=FE=D6=D0=B4=F2=D3=A1=B3=
=F6message=D7=D6=B7=FB=B4=AE=D0=C5=CF=A2</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
PrintWriter out =3D null;</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
try{</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =
=20
out =3D new PrintWriter(new =
FileOutputStream("d:\\output.txt",true));</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =
=20
out.println(new java.util.Date().toLocaleString()+" SessionListener:=20
"+message);</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =
=20
out.close();</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
catch(Exception e)</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
{</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =
=20
e.printStackTrace();</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt">  =
; =20
}</P>
<P class=3Da2=20
style=3D"LINE-HEIGHT: =
11.8pt"> =20
}</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 11.8pt">}</P>
<P class=3DMsoNormal>=B3=CC=D0=F2=CB=B5=C3=F7=A3=BA</P>
<P =
class=3DMsoNormal>=A3=A81=A3=A9=B8=C3=B3=CC=D0=F2=CA=B5=CF=D6=C1=CBHttpSe=
ssionListener=BD=D3=BF=DA=C0=E0=D6=D0=B5=C4=C1=BD=B8=F6=B7=BD=B7=A8=A3=BA=
</P>
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
sessionCreated(HttpSessionEvent =
arg0)=B7=BD=B7=A8=BD=F8=D0=D0Http=BB=E1=BB=B0=B4=B4=BD=A8=B5=C4=BC=E0=CC=FD=
=A3=AC=C8=E7=B9=FBHttp=BB=E1=BB=B0=B1=BB=B4=B4=BD=A8=BD=AB=B5=F7=D3=C3=B8=
=C3=B7=BD=B7=A8=A1=A3</P>
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
sessionDestroyed(HttpSessionEvent =
arg0)=B7=BD=B7=A8=B6=D4Http=BB=E1=BB=B0=CF=FA=BB=D9=BD=F8=D0=D0=BC=E0=CC=FD=
=A3=AC=C8=E7=B9=FB=C4=B3=B8=F6Http=BB=E1=BB=B0=B1=BB=CA=CD=B7=C5=BD=AB=B5=
=F7=D3=C3=B8=C3=B7=BD=B7=A8=A1=A3</P>
<P =
class=3DMsoNormal>=A3=A82=A3=A9=CA=B5=CF=D6HttpSessionActivationListener=BD=
=D3=BF=DA=C0=E0=D6=D0=B5=C4=C8=E7=CF=C2=C1=BD=B8=F6=B7=BD=B7=A8=A3=BA</P>=
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
sessionDidActivate(HttpSessionEvent =
arg0)=B7=BD=B7=A8=B6=D4Http=BB=E1=BB=B0=B4=A6=D3=DAactive=C7=E9=BF=F6=BD=F8=
=D0=D0=BC=E0=CC=FD=A1=A3</P>
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
sessionWillPassivate(HttpSessionEvent =
arg0)=B7=BD=B7=A8=B6=D4Http=BB=E1=BB=B0=B4=A6=D3=DApassivate=C7=E9=BF=F6=BD=
=F8=D0=D0=BC=E0=CC=FD=A1=A3</P>
<P =
class=3DMsoNormal>=A3=A83=A3=A9=CA=B5=CF=D6HttpSessionAttributeListener=BD=
=D3=BF=DA=C0=E0=D6=D0=B5=C4=C8=E7=CF=C23=D6=D6=B7=BD=B7=A8=A3=BA</P>
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
attributeAdded(HttpSessionBindingEvent =
arg0)=B7=BD=B7=A8=B6=D4Http=BB=E1=BB=B0=D6=D0=CA=F4=D0=D4=CC=ED=BC=D3=BD=F8=
=D0=D0=BC=E0=CC=FD=A1=A3</P>
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
attributeReplaced(HttpSessionBindingEvent =
arg0)=B7=BD=B7=A8=B6=D4Http=BB=E1=BB=B0=D6=D0=CA=F4=D0=D4=D0=DE=B8=C4=BD=F8=
=D0=D0=BC=E0=CC=FD=A1=A3</P>
<P class=3Da1 style=3D"MARGIN-LEFT: 39pt; TEXT-INDENT: =
-21pt"> =A1=F1=20
attributeRemoved(HttpSessionBindingEvent =
arg0)=B7=BD=B7=A8=B6=D4Http=BB=E1=BB=B0=D6=D0=CA=F4=D0=D4=C9=BE=B3=FD=BD=F8=
=D0=D0=BC=E0=CC=FD=A1=A3</P>
<P=20
class=3DMsoNormal>=A3=A84=A3=A9=C1=ED=CD=E2=A3=AC=B8=C3=B3=CC=D0=F2=D6=D0=
=BB=B9=CA=B5=CF=D6=C1=CBServletContextListener=BD=D3=BF=DA=C0=E0=A3=AC=B8=
=C3=C0=E0=B5=C4=CA=B5=CF=D6=B7=BD=B7=A8=D2=D1=BE=AD=D4=DA12.2.1=D0=A1=BD=DA=
=D6=D0=D3=D0=CB=F9=BD=E9=C9=DC=A1=A3</P>
<P=20
class=3DMsoNormal>=CD=AC=D1=F9=D0=E8=D2=AA=D4=DAweb.xml=C5=E4=D6=C3=CE=C4=
=BC=FE=BD=F8=D0=D0=B8=C3=BC=E0=CC=FD=C6=F7=B5=C4=C9=F9=C3=F7=A3=AC=C5=E4=D6=
=C3=B7=BD=B7=A8=C8=E712.2.1=D0=A1=BD=DA=BD=E9=C9=DC=A1=A3=B8=C3=BC=E0=CC=FD=
=C6=F7=CA=B5=CF=D6=C1=CB=D4=DA=CF=DF=BB=E1=BB=B0=C8=CB=CA=FD=B5=C4=CD=B3=BC=
=C6=A3=AC=B5=B1=D2=BB=B8=F6=BB=E1=BB=B0=B4=B4=BD=A8=CA=B1=A3=ACusers=B1=E4=
=C1=BF=BD=AB=BC=D31=A3=BB=B5=B1=CF=FA=BB=D9=D2=BB=B8=F6=BB=E1=BB=B0=B6=D4=
=CF=F3=B5=C4=CA=B1=BA=F2=A3=ACusers=B1=E4=C1=BF=BD=AB=BC=F51=A1=A3</P>
<P =
class=3DMsoNormal>=CF=C2=C3=E6=B4=B4=BD=A8=B2=E2=CA=D4=B5=C4JSP=D2=B3=C3=E6=
=B3=CC=D0=F2=A3=AC=B4=FA=C2=EB=C8=E7=CF=C2=A3=BA</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 12.3pt"><%</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 12.3pt"> out.println("Test=20
SessionListener");</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 12.3pt"> =20
session.setAttribute("username","zzb1"); &nb=
sp; =20
//=D4=DAHttp=BB=E1=BB=B0=D6=D0=C9=E8=D6=C3=D2=BB=B8=F6=D3=C3=BB=A7usernam=
e=CA=F4=D0=D4</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 12.3pt"> =20
session.setAttribute("username","zzb2"); &nb=
sp; =20
//=D0=DE=B8=C4=D6=AE=C9=CF=CC=ED=BC=D3=B5=C4username=CA=F4=D0=D4</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 12.3pt"> =20
session.removeAttribute("username"); &=
nbsp; &n=
bsp;=20
//=C9=BE=B3=FD=B4=B4=BD=A8=B5=C4username=CA=F4=D0=D4</P>
<P class=3Da2 style=3D"LINE-HEIGHT: 12.3pt"> =20
session.invalidate(); &nbs=
p;  =
; =
&=
nbsp; =20
//passi
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