Tìm hiểu công nghệ Web Services và xây dựng ứng dụng chat

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NHẬN XÉT CỦA GIÁO VIÊN
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$&'()'*+,%
- ./012

-%3430-5
5 63789::5%
5%(;4378<=9>?51
51@=351

LỜI NÓI ĐẦU
Cùng với sự phát triển mạnh mẽ của các mạng diện rộng và đặc biệt là mạng
Internet, con người đã và đang phát triển đã nhận thấy được những tiềm năng to lớn
của việc khai thác mạng thông tin vào quá trình hoạt động kinh doanh của mình. Các
hoạt động như giải trí, văn hóa, thương mại dần được đưa lên mạng và ngày càng
chứng tỏ tính hiệu quả của Internet trong việc chia sẻ thông tin. Mạng Internet và các
ứng dụng của nó như thương mại điện tử mới xuất hiện ở Việt Nam trong vòng một
thập kỷ qua nhưng đã nhanh chóng chiếm được sự quan tâm của mọi người.
Ngày càng có nhiều người tận dụng khai thác Internet nhằm nâng cao hiệu
quả kinh doanh và đã đạt được những kết quả không nhỏ, Chat qua mạng đã và đang
là hình thức trao đổi thông tin, giải trí cho tất cả những ai ham học hỏi, giao lưu, kết
bạn vươn tới thành công một cách đơn giản, và ngày càng phổ biến. Trên cơ sở nhận
thức được vấn đề đó và các nhu cầu đòi hỏi của thị trường trong đợt thực hiện đề tài
môn thực tập tốt nghiệp 2 này nhóm chúng em tiến hành đề tài: “ Tìm hiểu công nghệ
Web Services và xây dựng ứng dụng chat ”.
Chúng em xin chân thành cảm ơn Cô Nguyễn Thị Hải Năng đã tận tình chỉ bảo,
hướng dẫn và đề xuất hướng giải quyết khi chúng em gặp khó khăn, giúp chúng em
hoàn thành đề tài đúng tiến độ, có cơ hội được tìm hiểu công nghệ mới thuộc thế hệ

%

web 2.0 , thu được những thành công nhất định, là tiền đề quan trọng cho những lần
thực hiện đề tài tiếp theo. Chúng em cũng tỏ lòng biết ơn đến các quý thầy, cô khoa
Công Nghệ Thông Tin đã cung cấp những kiến thức tin học cần thiết để chúng em
thực hiện đề tài.

Mong ước thì nhiều và mặc dù đã rất cố gắng nhưng do kinh nghiệm, khả năng,
thời gian và vốn kiến thức có hạn nên đề tài vẫn còn nhiều khiếm khuyết. Chúng em
rất mong nhận được sự chỉ bảo, sự đóng góp ý kiến của các thầy cô giáo và bạn bè để
đề tài được hoàn thiện hơn. Chúng em xin chân thành cảm ơn.
BẢNG GIẢI THÍCH TỪ VIẾT TẮT
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CHƯƠNG 1 TỔNG QUAN VỀ WEB SERVICE
1.1 Web Services là gì?
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7Z<=9P$RDHH<=<:90>?A
G
9SSW.#[W<.<#HH\]K>F
A^U_!$99SS;H34D`9>?:
=aD:90>?A4GbA9S8K:K9
:
Ecd8739>?Z<:MbS
`=<4/:<:4:3K93efZ4:
F8>H:90>?M>MHUKM90>?Ag
$hK>U90>?9>?UiH=:dj
kbZ043e(ZHhK9jb9<:h/H4

l=<:90>?</]4<jk9jG;:HUKl3
#:XK>9>?H?A4XK:>HUK
:mF8M/:>>F=D#VV::<
:nbR*ZeK::HhKb349:4R
6:;UX>o#p:mF8
YbHPKlD;

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
b4:P4<jkhK4K8He<`
9eq/M:KD:H4:M4SP4<hK
<:H<=j>h<>R?K:>>F=r
SXK:mF8:HUKs7:l3M>:>
4:K9SHX<9S#:K
X9t>KD<KQK:XK>=<
:S>HhD/KD988<:H<X9t
O9l:90>?rSHhK9=bcP:q/
>:hKE$$[E$4$\>Hb439P^#:HH
<:4:c=<90>?
E<9Sc:90>?AHP:R9cH=jk
GbP:P(3=9< hK9<=K88<
m:=:bu0MS;>
bu0HPX9Z99l48<6lhKhu
<hK9<K8l9YjU#:90>?AH:90>?
9>?=<GbP:DS9>?hK7=4
8'
!P90>?AK8Hv<P>F7=
<Y#I![#<<IL!N^M#IWOJ[#<<ILW7
O<4J^MW!'[W<!<'<<^MW.#[W<.<
#HH^c9]90>?A$RD:K>FH<KQK>R

HhKS9sj=PFX8:0c:
K>FHhK9>?hK93jkU*ZXH?H4
HhKSHuX80XR9ZtYKHu
#9Y#IWOJ9wxPuHHUK88P4<8K/9B
9IWO[ILW7O<4\!Ubl<90>?^!PIWOH
:Dl<9c:90>?A#rPyHKl
mx:HhKb9Y#IWOJbZ8M`X4S
<78Hzb>R{
#I!#I!V9>:8K:K9F8F<:90>?A
#I!#I!Vr<=9PbZ<|M<9SS4<=9Pb:
Z4:>,4:U9Z<|(<#I!9wxPHhK
bS4}m<M{]Z!PHl;4T
>R>3

5

q43:90>?A9F84d9Y9j
9>W!'W.#>?Hb>U*SH:0blK8k9F8
:m>F>P|K8kPblAP
qX9Z~G9H9Y;:XKM<9S9YKlZ
W.#AXK:4:4K8He<`>F/
!PHl;48m>F/b:Z4:H=m8
90>?A9>?XKhPj.
1.2 Sự ra đời của Web Services và SOAP
#0hKb 22•M!<<Nh9>?34QD#I!M#I!V
!P<;4/=D90>?A!<<NlH9PHhKUZ9
SM:KnD!r=b9Z<|M
]lP8K:K:=<@]9j=<n_!$]HIJ.[KHIL
J.<<<H\€<hK90>?9F8^H43?K;H
_!$P<nSH7'€<IJ.9>?

c9Z8;H<k!.[KH!HN.<<<H^M•.[•H
N.<<<H^@.[@KN.<<<H^#:K:>R
;<>Hk:<D
!<<NjkG~:9>S<1#[<H
#<<^1#fH<IJ.GPn/9
:XK4:SB9l=<:90>?A>F
>F/UD!<<N#:8KnDk=b
:Z4:>,('_J-••`>F/U:D!<<N
=b:Kb8D9Z<|*Z9j8!<<N
9j]:n>_!$:<9jk=bX8:Z
4:

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
Hình 1.1: Mô hình ứng dụng sử dụng các đối tượng từ xa
*Z7]Hh=94:;IJ.P
IJ.hHP<9;Hb'!PH
P90>?cIJ.9Z8;H93P<YP
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1.2.1 Các công nghệ nằm dưới Web Services
(>X4ƒ_!$<MHS:~b>U94:
S<=9P#ez„hHPeb
':H<=m8Z4378
#:~b>U<KQK=dP<k
<;H7'=[>@.^IJ.#:
4:<KQK=d4:K::kE$[
EK<$\(;8^,EE'[,H
E<MEK<'<^
1.2.1.1 SOAP và XMLP
IJ.9j9>?9ZhKGbIJ.HPn9K:M4H

;Sf9>?393>U:b_!$.[_!$.<<<H^
1.2.1.2 UDDI và Discovery
€<3KZt/M:0l3M:l3:
4:ZPhK:90>?AH8Hb4S4m;H4:K:
4:6SP:n98:90>?<Y
t/9Y8>RPH9>?=<G:K:H>
PPUX8:HUKK>F*Zh0<(>
3:90>?l9>?…7'U>R4:
HHXl39S9>?:HUK*ZS9>?
7P|M>94>Rcl4:K:M
,EE'XKP:n94:K:8:4
lKD<>R
,EE'X>Uw!P<;wDSMSHP
_!$n8F9P(<SZ|
4:c,EE'978:<:Sv!P43
>RYK>|||<M|||<<<<N<

†

1.2.2 Mô tả một Web Services cụ thể
6P|cPE$8
<K/:4:9S3:HUKK>Fct/DS
bE$HP;b_!$
E$9Y7]90U:A!<<N!PhKE$
K8k=<PD!<<N9XKX4ƒK>F<
qUoM949cPrl3,W$D
P
1.2.3 Các hiện thực khác nhau của Web Services
#SS/<KD
*lbH!<<N!<<N9jB9l>Ub;>RK:

nIJ.kGSHP!<<N!<<N9j9K::
;HhK>#pqO(‡9G;PD
b
3K<HKSHb793oM>4r
H!<M=<oM4:!wSZ
XK4:>O‡JM'O!M#K#H<N|MJKg
*Z7]lUH40>:>UM/W.#M
:~b>Ubn_!$q3c<:mS
4:M>d:l>988<>F/
;:ZU
1.2.3.1 Hiện thực của Microsoft
!<<N9jSP4G9l>U~=<nIJ.M<9S:
KlZDXTdc4M@=
rvbZ<|bZ(‡<9S<>FH
fSb:Z4:>$
*H?D49>UDZ!<<N(‡HT
c4!<<N`XKP0H>?HU:9=<d

ˆ

XTM<k8K:9PE$M:
4:K:43><[c9::DS:(‡
^M:K>FK:K43dbMT
=<~:;HhKD!<<NhMrHb
P/w4lbPwj<9HPK>F
GP
EcTcT4MX8:D!<<N
bbH''[''N<<^EcST4
XM>S`YKK8:X9Z8<hb]q3=l
K8<{9hKh:8:Hu8<hD!<<N

1.2.3.2 Hiện thực của Java
3UDoh9jB4tK!<<N<HC
@H<=8KnB9l9>?0O‡JM'O!9B9lK:
Z:8Kn(<SJKXKP
>IJ.TK/R9hK93E<9S:
bo9jh9>?B4tK
#SXZ9H?4cUo*lbHSZ
XK:~o*Z<KQKSZH]
F48Kn<KQKT/?K<X4ƒ
43e<Sv
oHU8o.HM]HDP
K:<:>bFD!<<N<MPo
TK/T/?KUJKMTK/GSJK'O!KM
O‡JH<.HH:|>F=<KQKPK:
SbZ]H44*Z40U
D!<<N4et4SY<PZrP|

1.2.4 Các công nghệ khác
6rSo(‡H:l93(<
wS:8KnD:j<KQK/?KU
#IWOJM#IOI$M#VV :  0S v4: O~:d 

2

U:0MP344/Z=:0
Sv4l3h~:b<:l
bD;0MD;0S9>?hK
G:Sc
q/MPc#IOI$]l|D43093
:0MPGlb<KQKH<=430#K/D

KlZ04<:3:Sv>HP0
/Z=PTHU<YPKlZ<t=P
HU@>U9]PGlbP0Sv
Dd#IOI$43093P|b(‡<Yo

Hình 1.2: Mô hình ngân hàng sử dụng COBOL và web services
IJ.H;3BDA‰KHILJ.<<<H\€<hK
90>?9F8ŠM>UQUXMIJ.f4wHPA
3B;#nIJ.h_!$9>?3<b<H
IJ.MH3<PD9K9>?Z8MH3<9K
9>?dHzG8K/GhIJ.`XKPhK:An
(>X4ƒ<MIJ.`ShK:h;DbS#S
Zh;9>?d>Rb98:4/=4:D
nIJ.(ZHhKbc:h;4hz
CDS*h:4:9wxK80PR9z

•

CDAh;H3<9:K<8nIJ.P

#ez„#nIJ.4rHn_!$nw<k:
9KIJ.S>3<M:K>Fh4:M:
:Hu9>?dHz
1.3 Vai trò của Web Service
9R9jGP>UU<K::
b'=tH:t|43?Kd
Z4:<KQK:9>?3~:;4:
M=b:Z4:S<9s9>?U7
>R='b;dG94X3
K8H;U*H94:D|<U:

4:M9S/H48m43?K:9jS>H_!$MIJ.M
E$M,EE'9=<:M9Y9HshwD|
1.4 Đặc điểm web service
 <KQKH>F:9>?UYc<
;>R4:[;HhK4:MZ4:^
 9>?343G<:n„_!$@.HZ
84}h<|OGhMe9PHhKU;HhK
Z
 XH9P„qU,EE'E$M8K:
|S9>?9PS
  9>?bZ8;9j9>?XK
h
 S=<H
 S0[KH^]7=
 g
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(|9>?dXZ<;HC4:
DP0M>„
 Et]H]KH<=„H;0>43093
:|K<H943:A:X8S;A
4S0
Et      t    :  9C  =    <  :        
‹9=HzHtSZ:Q9Ht4:<S]H
KDZj4
O8/<:/:8<c‡HŒ#I!U<
|
% >F=<kZPMZ>„:<R
3M4<…MHtMy:sK3Mg

1 (;<t3<8O%OO%#>„9YQ:MH<
4•<b
- @0co9/<:y:9s;:H<=Z
@0f9>?:4:c>P|
1.5 KiZn tr[c web service
63eD|<k:l>„
Hình 1.3: Các tầng của web service
<9S<k:l„

%

 lhU;nH@.M!.o!
 l<>F:t[#<<.<<<H^U
nHIJ.IJ.H<~;lhl
8ZtMIJ.<KQK>Rc]PA
7P_!$
 l8t[EK<^UnHE$
_!$E$HP;8<3Kb_!$
d;E$9Z:0:H<=;H<
:<:M:m|XK
 lt[^„XK:mD
 l9m4zt[W^UnH,EE',EE'
c<8>RcŽIJ.MS<KQK9m4zt9
>RcS]A7=MS:4:P
lK89>?9m4z9<KQK:HS]
 Ob=9S9<:S/<M<i8<h
<43e|eSb:l.<HMM
<M!eKm>R/8<hM<<i
4d
g

1.6 Các thành phần trong Web Service
1.6.1 XML– Extensible Markup Language
_!$<1#9Z9>?K:A€!$_!$HP;8
m8UXe<>Rd9tCqZ_!$S4zK:K
>@!$>4<P9Y87>U>@!$(>Rd
:>FS7>U9t=:_!$9<3KU
lZ89>?<:_!$M<4X
<4:Z:dt;9S
E<|H43?KDZKl4:M<9S|
d:/m9Y>D:Kl9<3KU
qh_!$HP/39873X9ZA437DM
:/?KCm>Rd_!$(RS48ms?K
_!$9jG43eZ8<|

1

h48m873X9ZD:HUb
:9Z4:<e<3KU•bl9>?9:K
UHhKUoMP;3PHld]FHP]H
/?K<K:|
1.6.2 WSDL -Web Services Description Language
E$9tC:8|<eK:Ks7:_!$M<
k:
•bŽ
•€<4jSf9>?d4]:D|
•$<=„;<:M;0M;4;HkS<
D|MPUb<<
!PE$?KHkSKl„
.l<8<<430
%.l89X

#8%Klbf9>?H><%hK_!$M<k„
•hK<[<Kl ^
•hK[<Kl%^
Hình 1.4: Cấu trúc WSDL
1.6.2.1 Tập tin giao diện-Service Interface
E$85H<=/<k„K<MKMM
K<K  M  
a.Types „E$  9t  C  :  4  ;  H  D    9K  d  
‘N<    ’
‘K’
‘„    Œ’“
‘ŒK’

-

‘ŒN<’
b.Thông điệp (message) „    8    9K  9>?  d  ;  H    
‘N<    ’
‘  ”•<4•’  “
‘K  ”•<4•  H”•7•–  K”•7•–Œ’  “
‘Œ’
‘ŒN<’
(;9tC9>?dGKld(Z<:
#S3Uc9tC
<:;9>?bf9u?/H<=9F8
S:dH=#—=M<:Uc0S…P
9tC
 c.Kiểu cổng (port type):E$    8  :  d    h    9K
‘|H„N<    ’
‘|H„K<K  ”•<4•’

‘|H„<K<  ”•<4•    Œ’  “
‘Œ|H„K<K’
‘Œ|H„N<’
E$  9t  C  0  4  <  :    P  s  S    u  ?  „
•  I•|  „  s  h  P  M    9S  H    hK
•  W7•K<  „  s  h  P      d  P    K8  k
•  <H•K<„  s  d  P      h  Z  P  
•  (<N<„  s  d  P  M    9S  H    X
!u4<:SeK:K39sc<„D:hKMX
Hu
q/„
 ‘|H„N<    ’
‘|H„K<K    ’  “
‘|H„<K<  ”•<4•  KI”•<4•’
‘|H„K  ”•<4•–  ”•7•Œ’
‘|H„<K  ”•<4•–  ”•7•Œ’
‘|H„NH  ”•<4•  ”•7•Œ’“
‘Œ|H„<K<’
‘Œ|H„K<K  ’
‘Œ|H„N<’
d.Kết hợp (Binding)„9tC::|43?KU„
!P43?K<k„

5

•(;<GP<;<:;<k
,W(jS<IJ.
•!uP43?K393PH<=s˜P4s[K<K^S9•
>?d<Z043?KX8:<:9tCb<4
sK8~<K=043?K

1.6.2.2 Tập tin thi hành-Service Implementation
E$    8  %  H<=      /  <  k  „      K<   
a.Dịch vụ (Service)„(Sf;9j9>?9tC<hK<
:]|<DK>F<
‘|H„N<    ’
‘|H„  ”•<4•’  “
‘|H„  K<    Œ’“
‘Œ|H„  ’
‘Œ|H„  N<’
b. Port:HPs9l0MS9tC>PhK?KDP9t
r=
‘|H„N<    ’
‘|H„      ’  “
‘|H„  K<  ”•<4•  ”•7•’  “
‘Œ|H„  K<’
‘Œ|H„  ’
‘Œ|H„N<’
™9eX~P/43?KbH7(S3U
P043?K!Ps9/:P9tr=˜OX4ƒs<
<KlK8>F/:UP3<Kl<

1.6.3 WSDL API
E$-oHP:kGM=SPE$oJ.'9>?]H
E$-oOPE$-oXK<e:J.'9=<
E$TF<U:d3KeK:K<=>bb
S:J.'HL|H
1.6.4 UDDI – Universal Description, Descovery and Intergration.

‚


*S;:tM>UbHK8tMh
Z:dt39>?90>?XKt,EE'
9tCP0Kl<3>U:9<KQK:H
hH=;bld|
#Xe,EE'„
#Xe,EE'k:Kl„
i) Trang trắng -White pages„Hb:9t=/3D
|M—=b<tM9trMg(;<KQK:
90>?4::9t9>?
ii) Trang vàng -Yellow pages„8|<;D
H<=4:(;<KQK:90>?X|<
ADH<=DS
iii) Trang xanh -Green pages„4}h8::
mD|#:90>?<9Y9D|943
iv) Loại dịch vụ - tModel „    :      Z  H<=  t    d  
(;,EE'S„
•,EE'OW„P9m4z9>?8<G!<<NM'O!9Y9D
P9m4zHSK:ZYhHz
•'O!W„P9m4z<;>RK:9d
4;D]
•.'O!K„P9m4z,EE':
1.6.5 SOAP- Simple Object Access Protocol.
*39e9j9>?|H>3<MS9>?0
XG9(>eawPX9Z4:7]9SH„H3
<eXt4X–#8HRH|S
X~P<HKHILJ.<<<H\IJ.(S:4:
eSX93,EE'~:H]<<<4
IJ.
IJ.HP<<3KSXe>_!$jS9t
=<:<9sUš>GB9lA!<<NKl

Z,HM87ZHl9sM=HKb8IJ. %UZ
>9?PF8IJ.  IJ.9>?>HXe>F0D
:K:AZ;M9Z4:

†

1.6.6 Đặc trưng SOAP
IJ.S;9Y>„
•IJ.9>?3439F8TGP
•X8:IJ.9Z9>?jSd_!$
•IJ.d<Z;Hb
•6S<HH<K:M`4SF33q3
IJ.H4;X4ƒP39l9D<Z:90>?G
•IJ.4tPGX4ƒ;HhK<<Y<
q;9Y>MS47939>?d9
TH>Rcd:<9t=_!$>FM
S9>?<X4ƒ;<MTHSSdHz9>?
;<9t=_!$
1.6.7 Cấu tr[c một message theo dạng SOAP
#XeP<=IJ.9>?8>>U9„
Hình 1.5: Cấu trúc message SOAP
!<=IJ.HPm8_!$>R<k:
Kld„
•.ld0•H<K„KlA<cPM4:<m8_!$
>HP9KIJ.
•.ld9l\„:b9Z<MKld4
BP4:<<m8(;9lwS;;H
M;;4z0SMjSM<Y;9Y<<
:


ˆ

•.ld4:<P/<9K•<M:bl
K8k
•.ldK:Hu[•H^XKHu8<7edHz
9K
<  >R  ?K  9F  8  XM  Kl    D  IJ.    k  S„
•bD
•!P48<UP
•!P<YZ0::t:3#S14
:<
W7„U:0]P
WK<U:08ZM9>?d49:Kbl
•H:<=Hu
1.6.8 Những kiểu truyền thông
IJ.u?%4Z4:
•W<K<HH[W.#^„<KQK]<YD7=6
9>?4:GZ|SZ?eK
•E<„9>?3>4>U„4XKPHUKXKD
A>?Sbl>RHhKZF4H
#:9t=M0MHR]93:J.'>F<
W.#<H4:(b739t]:<cP<R
Kc?KDl
1.6.9 Mô hình dữ liệu
!9/D;HIJ.HXK;PA>?S
9P  HhK    ;  <  4    ;  HhK      (S  k  S  „
^(;4_E9F8>;4;HF8<90:;
HhK>MMM
^(;4K=KMS%H<=H[Xe^[8^
X8:Kld;9tS<;HIJ.9>?9t

C~K[4b^IJ.•‡(#
1.6.10 Mã hóa

2

<;>R/<:K:MjS9tCH<:t
D;H<S9>?tA4=6=
<;|H_!$M8dG9e83~
7<K<K:<oqhMjSIJ.H<
>R9H3<9sAXe;HoIJ._!$
>?H=!P:=9tCH07;PKld_!$MPHUK
oM    P  <  ;  H<=  j  S  U    G  b
!P:=r{H:<M949jjSPKld_!$9l<a
9s9>?UPHUKo>?H=#e7UK>F•
>U:=H_!$UooU_!$OX4ƒ>RIJ.<
`K8SP8;:=M]HIJ.!KKW
(3P4;H9>?83f9>?d>UPH<=jS
X9tMP:=>FK8k=<P9m4z[^D
>RIJ.9S*0:4on`>oO9ZY
9tH9>?u?
(;4;H4n[<9tC^l:=b8
H
1.6.11 KZt luận
*=<P|el:ll3<43e
|S:4:H3HhK:Kl<:l
9S  M      H  :    Kl  IJ.  M  E$  M  ,EE'  M  _!$  M  <  9S  „
•IJ.H<~;lhl8ZtM
IJ.<KQK>Rc]PA7P_!$
•E$HP;8<3Kb_!$d
;E$9Z:0:H<=;H<:<:M:

m|XK
•,EE'c<8>RcŽIJ.MS<KQK9m4zt9
>RcS]:M:mD|S:
4:PlK89>?9m4z9<KQK:HS]
•Ob=9Se`K8793H<9<:S/
<M<i8<h<|XH:Hb7
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
93<t>F=/#efP<:
Kl3K<
F9k>U9<eX{FZ:Kll3<P
|07;:Kl
Hình 1.6: Các thành phần cần thiết trong một web service
và mối quan hệ giữa các thành phần
1.7 Sự truyền tải dữ liệu và các thuật ngữ liên quan đZn XML
1.7.1 Sự truyền tải dữ liệu
1.7.1.1 SOAP Binding
h;8H3<P9KIJ.>F:9>?UP
<h>@.M!.•.9b'*Z
7]HIJ.~P<n9HbH=U:8Kn
4:
>UIJ.MZ>RK:9j=<:K>FK:KDb]9
8PH_!$b=#::a<=9P0<K=
PSb4=lHUPS4:G<b
<9ZGb4S4mK8XHS9s9
HUZ8H_!$]9dO~:dP
H_!$nb:<nMlH4P:U
f9>?809
1.7.1.2 SOAP Message Exchang Pattern (MEP)

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
h;8H3<PHIJ.<9s;K/:
4:D9KIJ.G;PHb43M>H@.M9SS
Zb'qS;:4:DMG9H:eM:
9t:9P8K/
(BH=IJ.HP_!$9SSW.#q3M!‡.<<Hbl
K8k;:4:D[:e4:^(>h3SlHb
H=;:e9>?~ZblK8k9<
XZ9K#:4:—U:90>?A4:
>#IWOJM9S9>?r<P430
1.7.1.3 SOAP Application
!PIJ.9F8HPcIJ.<P:
4:q<<bnIJ.M>Hs
K3M<YcnIJ.9hj:hKhDKlZ#ezH
PS=<Md<YHeD
1.7.1.4 SOAP Node
:DPeS<kGMhMdHz<YZ8H=
P9KIJ.!PerHPKlxDKlZMdHzPH
IJ.KP<wDSOb=Z;HMPeS:
988<_!$<HIJ.K89e;K:K<n
IJ.
1.7.1.5 SOAP Role
!PwDIJ.9tCPe<=9P>3<(SS
HeGMh<Ye
1.7.1.6 SOAP Sender
(eGHeGblIJ.(3=C93/D4:
D44:blMSG9KUD9
bl

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
1.7.1.7 SOAP Receiver
(>?H=UIJ.Heh
1.7.1.8 SOAP Intermediary
!PeSP9KIJ.>F:bKl
D9KM93t/433KD9K!Pe
>R<=9P>P<!P<fQDS
b=M9433KDSS99S
1.7.1.9 Message Path
!P9KIJ.AK/bG93K/bh9K
7Ze39>R9D9K9>?]HP
!.
1.7.1.10 Initial SOAP Sender
(eGblIJ.9lbHeGIJ.9l
1.7.1.11 SOAP Feature
!P9Y9IJ.HPKlmDKlZu?m
IJ.
1.7.2 Các thuật ngữ liên quan đZn XML
#nIJ.`9tCPhKx:Kld_!$99SS;
H9>?Z;:ehrSKldKlD9K
S4:KP<9Y9>?<KQKGn
IJ.
1.7.2.1 SOAP Message
*HH_!$9>?ZGPeIJ.G<Yh!PeG
<Ye4:=<PH_!$K/b4:lAK/
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

D!P4H9>?ZMK/bDK8<H9
X::t4:=<P9KIJ.U9K8k
1.7.2.2 SOAP Envelope
*HKld0DHIJ._!$HIJ.Z9t
C4b[K^>:KldHb7U9KIJ.
fS‡(q„H3K9l;
1.7.2.3 SOAP Header
.l9lDP9KIJ.P409l<H
_!$99t3dHz9KIJ.E;H:R4xKl
DHSHb79390>?9>?]
1.7.2.4 SOAP Header Block
.l9lDIJ.ZKlU=HZ40S
P40DKl9l(;40DKl9l
Z:ePel3e433K99K9>?G93
1.7.2.5 SOAP Body
.lDIJ.hD90>?9dHz
.l49>?K:fG90>?*0>?dHz
43789>?9Y<KlDH8Z
1.7.2.6 SOAP Fault
*HPKlDIJ.93X4ƒHu8=
PeIJ.

%-

CHƯƠNG 2 XÂY DỰNG WEB SERVICE
2.1 Giới thiệu
#S-9<=/9P|HM4M3
78Hz
•€9<=<kK:=d|M<k
:m9tC|

•€9<=4<k09tCME$M
4jD|
•€9<=3<k43]|
•€9<=78Hz<k78Hz78t|
2.2 Xây dựng Web Service
2.2.1 Các giai đoạn trong quá trình xây dựng web service.
#P<k:>UK8S9=<
P|U
<RM|K87;=:
4:
Hình 2.1: Những trạng thái của web service trong thời gian xây dựng
2.2.1.1 Giai đoạn xây dựng

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