xây dựng một toà soạn báo điện tử và công cụ thu thập tin tự động

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
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!=>?@.+ABC+@//D
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G.=@/C.@O
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/d2M5`
5K 9F2M5E
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5KVhiVVLZ?j`
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5:TVoVVJpVqr(E
5:3!S%,(
5)%scg(E
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5t>%s
5t>%s+S 
55t>%s%8*
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55MbMg7Cn=#=

55eM+|Cn=#=`E
55MbMg7`Q
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ewEO
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
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
%*n6="&ˆ %,<gb.‰<=|
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G'49=N6%M.%!ˆ$.=z"6$•$S"!%Š36
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F +!6="&

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n23!Œ$9
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V9KRˆ ’D
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 
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BŠ,ˆ"7 ˆ>.ˆC Cˆ9+a“%Š+d6=,n
b3>M %,9t<S%uˆ$ 12ˆ$ uˆ$ !
626>&#$1C =!+"&%.3%M
K.{.6†^VeO

%,9I%unBN2=,6/S$ %&'%>u>% Cg
n626."#*3662 %,9|C‰
C3=, .uˆaB "6&*1
 
^>BN2=,4/S$ u=,*30%*C
662ˆ64.u"6aB %RŽC9u=,%,
”N"<%3%9"6ub&=6="&t<S%uCa
6/S$ ”b3C961C•Y&.=b3C9u
=,6/S$ =6ua16D6/S$ Y&C3
${+v…C6b3>B92+.‹%M/–Ca"#sN"6
CaY2S/.|.b3BN26/S$ %&'C

C3H•y@$/@gb %>9=/–Ca+<
 !"#$%
!=>=,CnF2+!"6BN2=,6/S$ %&'%s
4+.${$9N<=•bMgnM"#C+!ˆ
•3;MbMy@$
&'#
()*+,
 -./01-!234
 !"#$%$&'
 #& ()
)/"0/C +>=S=— b.‰b˜ˆnC
3 4626N.u3!
4=0u>MCˆ‘=$‘"6>$M%*/.2%c M
0BF.:,3%>%*B@=6%S2<nb3
K.{.6†^VeO

%unŽ.=Š%#b&( *+,*% %*%/0112
34#56#.789a"!%>Ž.=Š2<n+<
4.=0™%M".+R "&C 6=,4$ %&'
Y2š5-!236#.›œ^:"#;<!=>?6'?%/0@@4#
A$??+%uˆ"&B'3%*&
S= 2-"6+9"#%,9bMF9B'3F.+!2&•@$
L@+@ABC+@+ˆž+@žBˆY&62+1&*"!%,9u>
+2C%*gd$1bŸ%Nb3C;,"6=3+46=
"&=6= 2a ‰ubM8L@+@"6u6%…=,+!
2&y@$
t %&'b3ŒC+"6"&+.%c3ˆ{"; =
C /*=6Rf+* nb  %,9V.2
u b ˆšt %&'œ6=,!gb.+%u4
$ "64=.b3n+.%c+MC=6"‹>."662

6BaSn.I•&%>+.%c3u>dS"7
$9ˆ$>=‹ˆ%s‰.ˆ "@CˆN=..2!9%,“tS
”u>$‘…C +.$ %&'&.2+<=S=6=‰
4  4  B2<  +2  C  1  ^u  6( C(’’"@BC+@//@ ˆ
C(’’yyy.+=ˆ“
&789:6;< =>?@.1-"!A&B"#6&:*
6&4#6&5ˆ$ %&'%Š|%*=,*%,9.
u% b>.2Hb=0+.%4u./¡/8*%,9  
S!$ ab v"0/C +> L@+@"6= 2aˆ
S!$ a62R%.%*% /—+d6S$ %*
#4%‰1Œ+"R7=0
 C/&7A<=>1-!23;/B1-#DEF#&G#
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.%Šu>+2C3 $1bŸ4$ 6uMC+.$ 
%&'
Y0+.$ %&'ˆ.2S6ˆ$S/—$M%*3=.ˆ$ ˆ
 9{+4ˆ"1/gbŽ@ˆ3"&6=“
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 •b 6buauC;";#S!{";%.
S#Sb 6b .
Y0$ %&'ˆ,=d+,.{+.%c=.$ 6+10
e3Œ•..&C"6b 63F.S!{";
F9 =6R•. b 6"0.
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
Œ/."67=B1&ˆ $ %&'%Šb¢%{%*M=S
b3>C- =!HB;A7#IJ=>F##2F#K
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&%G$ 9•"MˆMu"69!9^N26*a

¢/"0 S!$ b ˆ16S!$ 12bC94
%*1@%{bŸB1$9
6Mu>2>93=, .10$1bŸ
6+<M0ˆ=,+•*M¢ $ %&'6
b3C9=1Ca"64.3"&1ˆ"1%#.9
4…CC9%8"0 4$ 12
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0Ca(/8*+.=6ˆ%@+‘ˆ/8*$ n
!%8"0$ %&'ˆ%#62Sn"3™.^…aMbM
#n0C $ %&'|C46=$ u>B1$9@
n=6 RF#1S#B@/0;T&7#O/UK.?/6;T
&7#A>#1-
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MC.#"0$S%‰•,CŽ"1+2M%* 
$ %&'&<;+4.n%N2%Šg=%#
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F.=Se9762%ŠS9= n”•.$S%‰"6
$ 
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%, b,
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.=Su8%,C +>.%Mu=…Œ/."67=+.%4ˆ
Y&.=%Š!69=,=S0<06;4$ %&
' 4$ 62”%#u=g.74%‰£%*a$ /8
n+2C¤<;662"6=a664
V&Sˆ{+4$ %&'%Šu/uC=… nM 4$ 
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$9$ 12ˆ R./S%#%Š6C•$,C+<$&

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=,{+4$ a%.Sˆ=0=¡ˆ&%S"6%…$&a*C
"00+¡¥•43ag."03&=0
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= 2aˆuC9 =,%…%>=  $>g ‰%*‰
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£I@@+=/ž@=.†Iž¤Iž6=,+S B %{
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=,F2‘v%>/b0C=‹"7$9t1bŸf%n"66Ž.
F2‘62/—%*6=,f*C&Y&/';?@@B/—|C
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‘="• $>gaF2/—|C$SMb&=#4."6
3/g
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b0C£=.¤?@.+ABC+@//).%N2=!u"a;Ž/';
Cg:. 0C?@@B%>+9"#%8*b>:.%>u
>!=+./b0C%n<+<fC
)';,a:.@// 0C:.$ $M&
B@=%Š!=+./b0C.2.
Ya;(
string chuoi = "123abcd456bdabc";
string pattern = "abc";
Regex myRegex = new Regex(pattern);
Match m = myRegex.Match(chuoi);
if (m.Success)
{
Console.WriteLine("Tim thay
chuoi con {0} o vi tri thu {1} trong chuoi",
m.Value, m.Index);
}
Else
{
Console.WriteLine("Khong tim thay chi ca");
}
eMF9(
Tim thay chuoi con abc o vi tri thu 3 trong chuoi
Lp MatchCollection
0C62*+S•/b0C63%•s<
.S6=,C*C$1$1{"60C62b3uC
g  bd  S  •  %8  *  :.@  /—    ,
K.{.6†^VeO

ab9#98>9; 0C?@@B+9"#V.2:.@6=9
 %8*:.6%*

Ya;(
static void Main(string[] args)
{
MatchCollection mc;
string chuoi = "I like money, like woman and like
C#";
string pattern = "like";
Regex myRegex = new Regex(pattern);
mc = myRegex.Matches(chuoi);
foreach (Match m in mc)
{
Console.WriteLine("Chuoi con '{0}' xuat
hien o chi muc {1}", m.Value, m.Index);
}
}
Kt qu tr v:
Chuoi con 'like'xuat hien o chi muc 2
Chuoi con 'like'xuat hien o chi muc 14
Chuoi con 'like'xuat hien o chi muc 29
C3 #b9#98>9;4
V.,a %8*:.6(
$8I#
Q2+  ?&8R
G¦"a;(
static void Main(string[] args)
{
MatchCollection mc;
string chuoi = "This is a example string.";
string pattern = @"\S+\s";
Regex myRegex = new Regex(pattern);

mc = myRegex.Matches(chuoi);
for (int i = 0; i < mc.Count; i++)
{
Console.WriteLine("The match[{0}]: '{1}' co chieu
dai la {2}", i,mc[i].Value, mc[i].Length);
K.{.6†^VeO

}
}
fµ)%!=•bb3C9b9+‘ˆ"61¹$M
=,…#bd% /.Rµ/$M6b9+‘I%uˆ
,CS.u=&%#šŠ2%!=$1gb¥y@/C.@@/.$d
y@/C.@œ
eMF9 "a;+<6(
The match[0]: 'This ' co chieu dai la 5
The match[1]: 'is ' co chieu dai la 3
The match[2]: 'a ' co chieu dai la 2
The match[3]: 'example ' co chieu dai la 8
Lp Group
^3b4.6+1&b,CS•$>g/
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fb0C
Ya;ˆu>$S=8/b0C.+<%{.ŒLK"6,CS19
 LK!=12%*$1g6+<%Sf
0C+CC¦C$SS•u=/b0C.+<|C C
?@.+ABC+@//ˆ"6*+bMF9H$>g,Cu=
21
:,$>g,Cu=%…<=,u="61C?@.+
ABC+@//¯$1gf6b0C"0?@.+ABC+@///—%*
%."6u=Ya;ˆ=8Su=LKˆ$Su>"M=,?@.+

ABC+@//$M=,…#.2@/.$d/C.@
/.(
¼œ£›£µ³µ¤¹¤µ/œ
0C:.%*‹B1H+Cˆ"6u=,C*C=.<
+C/g.19 u==6:.!=12
0C+C*+•bMF9S%*H
*=u=21Ya+Cu>*=Dˆ…#f•
+=,n/b0C21ˆug.=,C*Cs=•%8
* .C+@Y!+CbMH.H.C+@ˆ/$/+${*=u
>%*+2B1+MC
             > &   +C  /— %*  +9 "#  $d  ,  a
:.+C/£/8+C¤…:.+C/£š<+Cœ¤UDAI
#<J\:
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
u^ov#AJ>:9w_x!&7y#!U
 Ya;/.%N2/';bM+|,Cu=s.%>*=
•f,C6u=(
static void Main(string[] args)
{
string pattern = "(a(b))c";
string chuoi = "abbabc";
Regex myRegex = new Regex(pattern);
Match m = myRegex.Match(chuoi);
for (int i = 0; m.Groups[i].Value != ""; i++)
{
Console.WriteLine("{0} co chieu dai
{1}", m.Groups[i].Value,
m.Groups[i].Length);
}

}
eMF9(
abc co chieu dai 3
ab co chieu dai 2
b co chieu dai 1
^S=Š/.%N2/';bM+|,Cu=u=.<£.=@"6
".@¤%>*=•/$/+/H=,fg.•&+<
SgšI:A(YAœ=6?A${¡dN1.1=£(¤
static void Main(string[] args)
{
Regex myRegex = new Regex(pattern);
Match m = myRegex.Match("Section:119900");
for (int i = 0; m.Groups[i].Value != ""; i++)
{
Console.WriteLine("{0} co chieu dai
{1}", m.Groups[i].Value, m.Groups[i].Length);
}
}
eMF9(
Section:119900 co chieu dai 14
Section co chieu dai 7
119900 co chieu dai 6
2&(&%%&
60C*+C*Cs=6•u=%*
*="6+9"#=,3•u=%**=+=,n/b0C
21@62,S+@.¥2"6b3uCg
bdS >& 0C+C@%*+9"#+C*C
=6,a:.+C/+9"#
K.{.6†^VeO


 Ya;(IR!="6+./8•u=%**=$d=,
?@.+ABC+@//6=M6%>+aH*=+<+—+<=f
6"< =3+C@
static void Main(string[] args)
{
Regex myRegex = new Regex("(a(b))c");
Match m = myRegex.Match("abbabc");
Console.WriteLine("So nhom duoc tim thay la:
{0}",m.Groups.Count);
}
eMF9(
So nhom duoc tim thay la 3
2(
0C62g.•bMF9H=,*=21.+<=,
@BC+@//¥£/$¥@BC+@//¤
2((&%%&
:fn=,%8*?@@Bb0C"0=,/$@BC+@//ˆ=,>
&.C+@/—%*S+.ˆ"6%*<="6C*C.C+@@
:f%8*.C+@*+=,*=£.C+@¤%¡
:fu=/—u+<=!=,.C+@@•=;b0C
"0/$@BC+@//%*‘#"0u=
 0C.C+@@*+=,S•f
%**="6+9"#=,3•*=%*&ŒF.
=,u=*=21,a.C+@/ˆ=,%8* 0C
.C+@@ˆ%*1C6=,6"<  0C
:."6+C|C+2B163 f%**=
Ya;/.%N23v%M+@.+@BC+@//£$¤¹%>!=+.=,
…#/b0C+<fšG\¨$$$G\¨$$œ
static void Main(string[] args)
{

string chuoi =
"XYZAbcAbcAbcXYZAbcAb";
string pattern = "(Abc)+";
Regex myRegex = new
Regex(pattern);
Match m = myRegex.Match(chuoi);
GroupCollection gc = m.Groups;
CaptureCollection cc;
Console.WriteLine("So nhom thu
luom duoc = {0}",gc.Count.ToString());
Console.WriteLine();
K.{.6†^VeO

for(int i=0;i<gc.Count;i++)
{
cc = gc[i].Captures;
Console.WriteLine("So capture = " +
cc.Count.ToString());
for(int j=0;j< cc.Count;j++)
{
Console.WriteLine(cc[j] + " bat dau tu
ky tu " + cc[j].Index);
}
Console.WriteLine();
}
}
e<F9
So nhom thu luom duoc = 2
So capture = 1
AbcAbcAbc bat dau tu ky tu 3

So capture = 3
Abc bat dau tu ky tu 3
Abc bat dau tu ky tu 6
Abc bat dau tu ky tu 9
45)&6!7##%&&#)#8#9%:
;
?@.+@BC+@//6=,Cn 3•C+!"6 "&%>
S%,"6C +>).%N26b.$ /';+@.+@BC+@//
+3•06«."."6±(
Y03•«.".(
using java.util.regex;
Y03•±(
using System.Text.RegularExpressions;
Y0•"&%Šb.$ /';|.u>&•
3"&34 +@.+@BC+@//!=bM="6.2M
$  BN2•|C C%…$&
' 9#8#7%<1150=>
 3;%*0&+Cn62/—|C|.BN2ˆ
b>=+.fˆb>=+.|C C"6•3C9sf+*|.
C+!8tS<b>=+.$>gaF2 =!BN2
+•3;62%>b>=+.%,aB  $>g%u
K.{.6†^VeO

$#?!!
?@@B$26=,3;%n2%- a71&.2%>SCˆ
b>=+."6 $>gaF2uu$,$>gaF2
•3•C+!b .(Aˆ«.".ˆ“Y6C¦C
2>%c$>gaF2•. 3•C+!
?@@Bt2 %*M bM$d «.2".@+/ £6=, 2< ."#
?@.+ABC+@//¤

?@@Bt2/—%,3/ •CnCv*C"0$>ga
F2 $Sˆ"63$ •fB1&+$>gaF2
£M  u¤  ).  %N2  6  =,  "6  $  4  .2  /'  ;  +
?@@Bt2(
• M'S""(>{=,./ 19 fCv*C"0$>g
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<Blog>

<Title>YinYang's Programming Blog</Title>
<Author>
<FirstName>Yin</FirstName>
<LastName>Yang</LastName>
</Author>
<Categories>
<Category>LINQ</Category>
<Category>WPF</Category>
<Category>ADO.NET</Category>
</Categories>
</Blog>
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