Kiến trúc hướng dịch vụ và ứng dụng SOA
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ĐẠI HỌC THÁI NGUYÊN
KHOA CÔNG NGHỆ THÔNG TIN
KIẾN TRÚC HƯỚNG DỊCH VỤ & ỨNG DỤNG
(SERVICE-ORIENTED-ARCHITECTURE)
Mã số đề tài
Chủ nhiệm đề tài
Cố vấn khoa học
: S2010-08-21
: Nguyễn Thị Dung
: Th.s. Nguyễn Hồng Tân
Thái Nguyên 12/2010
MỤC LỤC
MỞ ĐẦU 1
CHƯƠNG 1: TỔNG QUAN VỀ KIẾN TRÚC HƯỚNG DỊCH VỤ (SERVICE-
ORIENTED-ARCHITECTURE) 2
CHƯƠNG 2: PHÁT TRIỂN PHẦN MỀM DỰA VÀO SOA 12
CHƯƠNG 3: KẾT QUẢ VÀ THẢO LUẬN 35
40
KẾT LUẬN 41
TÀI LIỆU THAM KHẢO 42
CHỮ KÝ XÁC NHẬN 44
MỞ ĐẦU
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Nguyễn Thị Dung
CHƯƠNG 1:
TỔNG QUAN VỀ KIẾN TRÚC HƯỚNG DỊCH VỤ
(SERVICE-ORIENTED-ARCHITECTURE)
1.1. Kiến trúc phần mềm hiện nay
ộố kiến trúc phần mềm phân tán hiện nay
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SOA được xem như là bước phát triển tiếp theo của nghành công nghệ
phần mềm.
1.2. Kiến trúc hướng dịch vụ - SOA
ệ
SOA (Service Oriented Architecture) – Kiến trúc Định hướng Dịch vụ4
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Š
Hình 1.2: Mô hình cơ bản của SOA.
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1.2.3.1. Kết nối lỏng lẻo
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1.2.3.2. Tái sử dụng dịch vụ
l@6a&"&<>&!6=*R\&&/%2&Z #N%5I#RS%259%26*R\&*c%2H|
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1.2.3.3. Quản lý chính sách
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g #/%26A8/.#a%!%2!7 6=#A%2H!%!D5*/!%!6%!D5!w#\g
#/%26A&"&4/gH?!\ C
1.2.3.4. Tự động dò tìm và ràng buộc động
!w#\H!"%75H!(!"&<>&!6=O:)#6&)<:&A6)#.PCm1%2RS:;
<=%2&0%*?%51<>&!6=%A*D&D!$a5H?5<>&!6=<(#N%51:BN/
&!/-%H!&0%C2RS:;<=%2&!J&0%!F51#)2:#.651<>&!6=%A!F(
.N/&0/a5H?5C[<=351!7!B%2&!/.$%H!AQ%3H!"&!!%2.N/&0/51
#)2:#.a5Z&Q&"&<>&!6=&DH!Q%c%2H$5#(!M[%<=%2Cq)2:#.#Q6
51g &"&<(%!5=&!F(5+%.N/&0/C"&5=&*D&!G(!I%2%6<>&!6=3
`(A2e5&Q&! ![2(A<>&!ClN%:;<=%2:p&!V%51<>&!6=&D ![2(A<>&!
!Z %!Z#A%2<(%!:"&!&"&<>&!6=#Q63H?%B*?%%!&/%2&Z <>&!6=
<(#N%!I%2%*>(&!J#)2:#.*+&/%2&Z *$:;<=%2<>&!6=H$5#(!M[%
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*$!&!<>&!6=3`N%:;<=%2&!J&0%*>%!<9%2<K47/.N/&0/*,%2!)A5I
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1.2.3.5. Khả năng tự hồi phục
YH[&!&Œ6*1 !G&9 &'(%!K%2!7!B%2 !]%"%%2.%(.3H!Q
%c%2 !=&!e&'(51!7!B%2:(/H!`>:&B451.?/B#Z8/(%#V%2C
m1!7!B%2 !=&!e4!7!B%2&DH!Q%c%2 !=&!e:(/H!4w5
H!I%2&0%:&(%!7 &'(&A%%2RSC
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#A%2a%!#9%2!w%4A9%C#A%23&"&<>&!6=4/I%&D!$!A9*1%2!(.
%2h%2!A9*1%2`Z&G4,&%A3%!Z4*B6Y%!K%2" <=%2f%2!\ h%!/
<>&!6=&'(%!/f&!G&H!"&%!(/C1%&g. !=!/1&6AH!Q%c%2 !=&
!e&'( !0%&G%2:(/H!`>4wC90%259%2 !Q&!A !i &"&H?%B*1%2h
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!R@%2*?%*1%&g.4H?%#,&5<(#N%*D%!K%2G%2<=%2*R\&d].
<%2Cm1H?%#,&!w#\H?%B6!&!*1%2:p&DH!Q%c%2 !=&!e
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Về mặt kinh tế:
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5@#1%2&'(!7!B%2#A%2RL%24(C
Lợi ích về mặt kỹ thuật:
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59%2&=!$C
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CHƯƠNG 2:
PHÁT TRIỂN PHẦN MỀM DỰA VÀO SOA
2.1. Mô hình hoạt động và kiến trúc chi tiết của hệ thống
'(ổể"ủ#
Hình 2.1: Mô hình tổng quan của SOA
)#6&)#A6<)#/%2&Z &"&:)#6&) !=&6=&!A51%!/&0/%A*DC
:)#O:)#6&)&A%:/5)#PH!I%2&0%8/(%]5*?%6>#[!&:5:)#6&)
!V&0%:;<=%2*(%2!A9*1%2CV&!J&0%8/(%]5<>&!6=*D42aC
)#6)A%:/5)#H!"&!!%2<>&!6=!(.%!K%2/:)#:;<=%2:)#6&)
*R\&&/%2&Z `@)#6&)#A6<)#C
)#6&)q)2:#. L4R/#K!I%2%6&"&:)#6&)&'(&"&)#6&)
#A6<)#H!"&%!(/3)#6&)A%:/5)#<(#N%%!K%2!I%2%%.*$
a5H?564(&!V%)#6&)#A6<)# !T!\ C
)#6&)#A6<)#:p*c%2H|!I%2%6:)#6&)55a%!&D!$&/%2&Z
O&"&&!G&%c%2&D!$&/%2&Z 3H!Q%c%2&'(!7!B%2O#):A/#&)3 )#nA#5(%&)3
2"&Q<>&!6=CCCP6A)#6&)q)2:#.C)#6&)A%:/5)#H!&D%!/&0/651
:)#6&)%A*D:pa5H?5!I%2%#N%)#6&)q)2:#.C2A&!G&%c%2!w
#\a5H?53)#6&)q)2:#.&E%&D!$d? !9%2&"&)#6&)#A6<)#<(#N%
&"&N/&![6&!Z4R\%2<>&!6=3`0/&!V%h&"&H!"&!!%2*+:;<=%2
:)#6&)CCC!K%2!I%2%%.:p!w#\!N5&!A8/"#a%!a5H?5&'()#6&)
A%:/5)#C ! *+ d"& *>%! *R\& )#6&) #A6<)# 5A%2 5/B%3 )#6&)
A%:/5)#!?4g HN%!2(A? #&? 6Y)#6&)#A6<)#%!u5:;<=%2
:)#6&)!AX&?%!%!!RL%24R\%2!N5O65X2"&Q3#):A/#&):;<=%2CCCPC
'(#)ế*ằ'ệ+,#,-.)
A6YH$/!?H?A5 A%)%l(:)<O!RY%2!%! !0%P3*$5H!"&
`7&![%!&'(4&/%2&Z H!Q%c%22(A? 2K(&"&!%! !0%#A%2!7
!B%2:;<=%2!I%2*7 O5)::(2)P<(#N%&"&2(A!G&*+*R\&&!/-%!D(
O3•3mCCCPC![%!%!S*X&*$5%.3!7!B%2#@%N%*1&4g
6Y%%O 4(nA#5%<) )%<)%PC"&:)#6&)!A9*1%2#N%&"& 4(nA#5H!"&
%!(/6v%&D!$2(A? 6Y%!(/%!S6A&"&%)#n(&)2(A? *+*R\&&!/-%
!D(*$&1%2"&d;4|51"&6=%A*DC
Hình 2.2: Message được truyền nhận giữa các dịch vụ
;<=%2!I%2*7 O5)::(2)P*$2(A? &D&"&4\!?:(/
{ 1&4g %%!I%2*7 O5)::(2)P#@!%!%2I%%2K&!/%2&'(&"&
4(nA#56&"&%2I%%2K4g #a%!H!"&%!(/C/%.*Q5`QA&"&:)#6&)#N%
&"& 4(nA#5H!"&%!(/!A9*1%26Y&Z/#,&<K47/*X&!T&'( 4(nA#5*DC
{ (A? `Z*e%2`12RS2;6%2RS%!g%H!I%2&0% !Q&!S
!I%2*7 #Q4S:(/H!*+2@*51!I%2*7 C/%.2, &!A%2RS2;
6%2RS%!g%? =&d;4|&I%267&:(/H!2;!I%2*7 5H!I%2&0%
<h%2!&!*$&!S!I%2*7 #Q4SC
{ (A? %&g.&"&!I%2*7 h`N%2;&D!$*R\&2;*?%51
:)#6&)#/%22(%&D%!756=4R/#KO:A#)P&"&!I%2*7 C)#6&)#/%22(%
:p&!/.$%? OnA#•(#<P!I%2*7 &!A`N%%!g%H!`N%%!g%&D!$d;4|.N/
&0/? !)ACL&!?A#)(%<•A#•(#<%.*Q5`QA&"&!I%2*7 :pH!I%2`>
!Z49&#A%2#RS%2!\ q)&)6)#`>8/"Q6H!I%2!$%!g%!N5.N/&0/
5YC
{ ƒ/Q%4|4/e%27&#(A*f!I%2*7 !)A&L&!?`Z*e%2`12,
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&"&4/e%2O!#)(<Pd;4|&"&&I%267&H!"&%!(/C
€
{ (A? hd("&!I%2*7 4R/#K!I%2%6&"&*BR\%2<K
47/<RY<9%2*X&Q!a%!!G&!(.!?67& !Q:)#(4‘(A%(%<<):)#(4‘(A%
&"&*BR\%2<K47/#/.%8/(59%2H!G%2<=%2!&!7%2Vhd(51G%2
<=%2H!"&C
{ lQA5g)%<A)%<!I%2*7 &D!$4R/#K!I%2%6!a%!!G&
`QA5g&'(HN%!2(A? C/%.&/%2&Z H!Q%c%2*/H!$%4N%8/(%*?%
`QA5g%!Rd"&!&6 !]%8/.%C
ế./"ầ"ế
7%%(.&!R(&D515I!a%!&![%!!G&%A&'(C!g:4
51 !RL%2 !" 4/g%2, &!,%2(g%<=%2:G&59%!&'(&"&%2/e%4&3
%2/e%%2/.N%H!"&%!(/#A%259%25".[%!*$#@!%!51!7!B%2
%!ZCmw51&I%2.&D515I!a%!H!"&%!(/C!a%&!/%25I!a%!
&D&"&*X&*$5:(/
Hình 2.3: Kiến trúc chi tiết của SOA
0%2A%%)&6.*].40%2!Z %!Z&'(3&D%!756=2(A
? #&? 6Y&"&!%! !0%H!"&%!R&L:@<K47/32(A? 6Y&"&
G%2<=%2H!"&3&"&•)`:)#6&)ba6g.&D!$&A*].40%26g4|&'(
C
0%2#&!):#(A%4&"&<>&!6=d;4|&"&8/.#a%!%2!7 6=6
*1&4g 6Y0%26g4| ![(`N%<RYC0%2A#&!):#(A%&!G(&"&!%!
!0%*D%26(#E6h(4<>&!6=:;<=%26h(4%!K%2<>&!6=&/%2&Z C
!K%2<>&!6=%.:;<=%2%!K%2<>&!6=&'(0%2H?%B6&"&<>&!6=
A#&!):#(A%H!"&*$H?!\ %!K%2&!G&%c%2&Z !Z !L%!%!%!K%2
<>&!6=!A9*1%2@&Z &(A!L%3&D!%!620%6Y%!K%2&!G&%c%2
%2!7 6=!L%C
…
0%2A5 A:) 4&(A%4&"&G%2<=%2f%2!\ %!u55=&*[&!
#a%!<}%O #):)%(A%P6!$%!>!I%2%&!A%2RS<T%2&k%2%!R
&/%2&Z 512(A<7%&!A%2RS<T%2RL%2"&6Y!7!B%2%!R451
!0%55</.%!ZC0%2%.&D!$4&"&•)`:)3 A#(43&"&G%2<=%2
&4)% 5@ #1%2 O#&! &4)%P3 &"& !? `> < *1%2 !I%2 5%! O:5(#
<)6&)P3b
"&!%! !0%H!"&2e5&D8/.#a%! !"#$%O<)6)4A 5)%P38/Q%4|
&"&<>&!6=O:)#6&)5(%(2)5)%P368/Q%4|&A%%2RSO2A6)#%(%&)PC
!R6g.&D!$!Z.H!I%2&!J*L%!/0%465X&I%2%2!75%D
4f%2!E(&'(#Z%!/.?/B&I%2%2!73&L:@!90%23&A%%2RS6
8/.#a%!%2!7 6=C
Hình 2.4: Các thành phần tham gia triển khai hệ thống SOA
g.H!%A:;<=%2jD4H!!?H?!7!B%2*X#(51&]/!F
4Y%467&&]%%!‚&2K(H!Q%c%2:;<=%2496!7/%c%2&'(!7!B%2C?/!7
!B%2&0%67&&!9.%!(%!&!A51G%2<=%2*X&`7!aqm3ql3rm
4:4(&!V%C!R%2!7!B%2H!D&D!$!(.*f!AX&:;<=%249C?/!7
!B%2<*>%!!(.*f!RS%2d/.N%5H!I%2.N/&0/8/"&(A6B&*1!a
4 !RL%2&"&!? &g%B%!ZCD<}<%2:;<=%249#A%2RL%24(6
&!A !i &"&G%2<=%2RL%2*R\&!?H?51&"&!%!(%!&!D%2C
4R</.!7!B%2R/67&!A2(*A9%&I%2%2!7!7%%(.Cg.
45&"&!%A*$#$%H!(R</.*D6A&"&G%2<=%2!&?jD46Z%*6
&I%2%2!7C!0%? !)A:p#a%!`.51&I%2%2!7&D!$%D4!$!7%B
%!Z&!A!7%%(.’Web ServiceC
ˆ
2.2. SOA và ứng dụng Web Service
0ới thiệu về Web service
X&*$5&![%!&'(4"&!#S !0%2(A? 6Y !0%!&!7%
<>&!6=C/%.&!A !i &!,%2(4N%R@%2*?%51&I%2%2!7*R\&*&g
%!/!7%%(.~)`)#6&)C~)`)#6&)&!A !i #/.&g !I%28/(*>%!
%2!z(2(A!G&62(A? C
&L`Q%34H?%#,& !0%55 !"d/Zh*>%!%2!z(2(A?
6d].<%2A%`15I!a%!G%2<=%2%!R45I!a%!&"&2(A? 3!7%!&
2(A? 6 !RL%2!G&2V2(A? C(A? 4#/%2]5&'(A%`1#?4|
H?%#,&%.C!&#(3N%2VUH?%#,&*>%!!RY%22(A? W![&!!\ !L%
&!ACr>&!6=65A</4) !0%55%2!7 6=*R\&#/.&g !I%28/(2(A
? 3!RS%2!)A&"&!!G&.N/&0/*" #QC2(.&Q6Y.N/&0/<>&!6=51
&!/!a%D6v%4.N/&0/#&? &D&!'*[&!h51 !0%55%.*?%51
!0%55H!"&Cm1RL%2"&*>%!!RY%2<>&!6=4/I%`(A!551&X *B
"&%2/e%&/%2&Z <>&!6=6H!"&!!%2:;<=%2<>&!6=C
Web service451&I%2%2!7#7/2Vhd(&D[%!H!Q&!/.$%&(A%!Z
!7%%(.5(%2[%!*1&4g %%3*1&4g %2I%%2KCY•)`:)#6&)3&"&&!RL%2
#a%!6?`u%2&"&%2I%%2K4g #a%!H!"&%!(/3&!9.#N%&"&%%Q%2O !0%
&G%2“PH!"&%!(/*/&D!$#(A*f6Y%!(/!I%28/(&I%2%2!7%.C
0%2#(%: A#&'(~)`)#6&)!RS%2<T%2%!K%2&I%2%2!7#/.%Q !f
<=%2%!Z%!R3mCCCO/.!7%%(.!RS%2&!J<T%2P%N%H!Q
%c%2 !]%"%#N%<7%#1%2%!R%)#%)4#Z!/g%7%Cm4H?%#,&
H?%B4F%24MA&"&:)#6&)6&"&:)#6&)*DRL%2"&6Y%!(/!I%28/(~)`
:)#6&)CrA*D3H?%#,&:;<=%2~)`:)#6&)%!R4512Q !" &![%!
*$2Q8/.?6Z%*[&!!\ %2!7 6=2K(&"&!7!B%2C*X&`N#A%28/"
#a%!%)#%)!D(5V<>&!6=!N%%(.3!a#$%H!(<>&!6=`u%2~)`:)#6&)
&D!$%D4*/UZ%!N%WC
1,*,.",.)23!"ợệ4
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2(A!G&5@&!G(*%265IQ&![%!%D3&D!$*R\& !"!7%`u%2&"&!:;
<=%2rr6&D!$*R\&:;<=%2`@G%2<=%2H!"&H!"&%!(/C~)`:)#6&)
!A9*1%2<(#N%%%Q%24•mo6C#A%2*D•mo&/%2&Z 51
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Š
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2(A!G&%)#%)*R\&:;<=%2%!/%!ZC
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•mo!/-%*>%!<9%2<K47/6!I%2*7 C
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Hình 2.5: Mô hình hoạt động của web service
Hoạt động của mô hình Web Service như sau:
Service ProviderrT%2~)`)#6&):r):&# A%o(%2/(2)O~roP*$
5IQ<>&!6=55a%!&D!$&/%2&Z 6d/Z`Q%O*c%2H|P6Y)#6&)
l#AH)#ORL%26Y)#6&)q)2:#.#A%2PC
Service Broker:oR/#K!I%2%6&"&:)#6&)*R\&&/%2&Z `@&"&
)#6&)#A6<)#C/%2&Z &!G&%c%2a5H?5!w#\)#6&)q)8/):)#
O)#6&)A%:/5)##A%2P#A%267&d"&*>%!)#6&)#A6<)# !T
!\ C!%! !0%&![%!&'()#6&)l#AH)#4&"&H!A4R/#K*R\&5IQ
`@%6)#:(4r:&A6)#.3r):&# A%3(%<%)2#(A%OrrPC
‹
Service Requester:rT%2~ro*$*X&Q%!/&0/:;<=%2O4A9:)#6&)3
!S2(%:;<=%23#):A/#&)&0%!?35G&2"CCCP62@&!A)#6&)
l#AH)#Clu%267&:;<=%2rr6&!G&%c%2a5H?5&'()#6&)
l#AH)#3)#6&)q)8/):)#&D!$a5!Z.)#6&)#A6<)#![&!!\ C
2(.:(/*D32K()#6&)q)8/):)#6)#6&)#A6<)#!?4g HN%!
2(A? :;<=%2*$!RL%24R\%22"&Q6&"&.?/BH!"&#A%2
67&:;<=%2:)#6&)C
!R6g.3:;<=%2~)`)#6&)&!A67&[&!!\ 2, G%2<=%2*9*R\&
%!K%25=&N/!)A%2/.N%4|
!I%28/(&"&&!/-%&I%2%2!7 C"&&!/-%%.2e5~)`)#6&)6Y
&"&*>%!%2!z(!%! !0%&!/-%&I%2%2!7 &!A•moC
;<=%2*R\&%!K%2 !0%55!RL%259*+d].<%2:_%%!/%!Z
&D!$C!0%55 !Q&/%2&Z &"&HN%!2(A? O(<( )#P&!A~)`
:)#6&)C
D%22D&"&G%2<=%2&!A !i H?!h(6Y2(A<7%*,%2!)A&!/-%
&I%2%2!7&!/%2C"&~)`)#6&)*/ !Q*R\&:;<=%2!I%28/(2(A
<7%%.C
;<=%2<K47/60%2<K47/*1&4g %u52K(&"&G%2<=%2*$-%*
&Z/#,&<K47/`N%<RYCmVRL%2"&6Y<K47/*/ !Q!I%28/(
~)`)#6&)C
o5!?%A~)`)#6&)&D!$*9*R\&%!K%25=&N/#N%j!,%2(
:p*6Ad)5di&!?&"&&I%2%2!76H†!/g!&!7%&'(~)`)#6&)C
5ấu trúc và chi tiết các thành phần của 1,*,.",
%Q%2&'(&"&<&!6=•)`2e5&"&.?/B•moO)•)%:`4)m(#H/
o(%2/(2)P3 O5 4) `y)& &&):: #AA&A4P3 rr O%6)#:(4
r):&# A%3 r:&A6)#. (%< %)2#(A%P3 ~ro O~)` )#6&): r):&# A%
o(%2/(2)PC
•
Hình 2.6: Các thành phần của Web service
2.2.3.1. XML - eXtensible Markup Language
•mo451&!/-%5@<A~€*R(#(6*R\& !"#$%hmoC •mo
451%2I%%2K5IQ6c%`Q%6Y&Z/#,&<A%2RS:;<=%2*>%!%2!z(3%D
*R\&:;<=%2*$*>%!%2!z(&"&!%! !0%<K47/#N%#(%2•)`6&!A%!K%2
47/llC
!a%!!G&3•mo!A%A%&D&Z/#,&!M2B%2%!R%2I%%2Kmo3
%!R%2H!I%2/]%!)A51*X&Q8/.RY&%!Rmo3%2RS:;<=%2!(.&"&
&!RL%2#a%!&D!$8/.RY&*>%!<9%2&"&(2•mo*$2(A? 6Y%!(/C#A%2
H!mo*>%!%2!z(!%! !0%*R\&!$%!>%!R!?%A!a•mo49*>%!
%2!z(%!K%2!%! !0%*D&!G(&"2aCY•mo3&"&!M&D!$*R\&4g #a%!
6N%9A#(#N%5w#(%2•)`6*R\&&!V%4*>%!<9%2!I%2*7 &!/-%`@
[%! !f`?%6!7/8/Q5+%2/e%5@C
rA~)`)#6&)4:H?!\ &'(%!/!%! !0%H!"&%!(/%N%%D:;
<=%2&"&[%!%c%26*X&#R%2&'(&"&!%! !0%*D*$2(A? Ca6g.•mo
4&I%2&=&![%!*$2Q8/.?6Z%*%.64H?%#,&%%Q%2&!A67&d].
<%251~)`)#6&)3Z&Q<K47/:p*R\&&!/.$%:(%2*>%!<9%2!M•moC
!*D3&"&!I%2%5+!D(:p!A%A% !T!\ 6Y&"&!I%2%!)A&!/-%
&'(!AX&•moq6&D!$RL%2"&6Y%!(/#A%251!$!B%2
%!ZC
[<=647/•mo
<?xml version="1.0" encoding = “UTF-8” ?>
<DOCUMENT>
<GREETING>
Xin Chào XML
•
</GREETING>
<MESSAGE>
Đây là chương trình XML đầu tiên
</MESSAGE>
</DOCUMENT>
47/•mo&!J&!G(<K47/3H!I%2%!‚&*?%&"&!#a%!`.C/%.
&D|%2!z(*D451XML parser3H!I%2&0% !Q!$/|%2!z(&'(&"&!MCD
&!J&0%a5&"&!M6d"&*>%!*].45147/•mo!\ 476a#a%!</.7
H!I%2&0% !Q!$/|%2!z(&'(&"&!M3%N%%2RS<T%2&D!$9A#(&"&!M`Z
Ha*$:;<=%2C
2.2.3.2. SOAP (Simple Object Access Protocol)
o512(A!G&<(#N%•mo*$&!A !i &"&G%2<=%2#(A*f!I%2
%8/(3*R\&!?H?*L%2Q%6<}5@#1%2CL%2Q%3451
2(A!G&*$#/.&g 51~)`)#6&)3512(A!G&#/.%!I%2!(.51*>%!
<9%2*$2;%%!‚%CZ&Q&"&!I%2*7 */*R\&5+!D(:;<=%2
•mo3&!A%N%H!I%2`>#%2`/1&`@`ZH”%2I%%2K4g #a%!%A!AX&&I%2
%2!7%ACa%!K%2*X&#R%2%.3%DH!I%28/(%]5*?%&I%2%2!72a*R\&:;
<=%2*$!&!7%5}%4%2RS<T%2:;<=%2&"&5)::(2)!)A*>%!<9%2
•moCRL%23:)#6&)&D!$*R\&!&!7%#A%2`ZH”%2I%%2K%A35}%
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Hình 2.7: Mô hình gửi nhận thông điệp qua SOAP
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