Spring Mvc Netbean

I HC KHOA HC T NHIN KHOA CNG NGH THNG TIN

CQ HK1 2k9 2k10

N TM HIU

Mn Cng ngh Java cho h thng phn tn

Bo co tm hiu Spring MVC Framwork

Version 3.0

Sinh vin thc hin:

0612089 Nguyn c Linh Giang

0612119 Nguyn c Hong

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

FIT-HCMUS Trang 1

Mc lc

1 Gii thiu v Spring MVC Framework : 2

1.1 Spring Framework : 2

1.2 Spring MVC Framework : 3

1.2.1 Cc thnh phn quan trng nht v chc nng ca mt Spring MVC framework: 3

1.2.2 Lung x l request trong Spring MVC Framework : 4

2 ng dng minh ho c bn (Hello world): 5

2.1 Mi trng trin khai ng dng : 5

2.2 Cc bc thc hin : 6

2.2.1 To mt Project Spring Web MVC bng NetBeans : 6

2.2.2 Phn tch cc thnh phn trong Project : 9

2.2.3 Pht trin mt ng dng n gin : 11

3 ng dng minh ho nng cao : 22

3.1 Pht biu bi ton 22

3.2 Cc bc xy dng: 22

3.2.1 To CSDL v lin kt kho ngoi 22

3.2.2 To Project p dng Spring Framework v Hibernate 28

3.2.3 Pht sinh cc mapping file v pojos tng ng cho Hibernate 32

3.2.4 Tao cc lp DAO v BUS 39

3.2.5 To Controller cho chc nng thm sn phm mi : 42

3.2.6 To Views : 46

3.2.7 Config Controller : 49

3.2.8 To Validation : 52

4 Cc u im v khuyt im ca Spring MVC Web Framework : 56

5 Ti liu tham kho : 56

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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1 Gii thiu v Spring MVC Framework :

1.1 Spring Framework : Spring l mt Framework m ngun m c phin bn dng cho Java Platform v c .NET Platform.

Phin bn u tin c vit bi Rod Johnson v a ra cng cun sch Expert One-on-One J2EE Design

and Development c xut bn thng 10 nm 2002.

Spring Framework c th dng cho tt c cc ng dng vit bng Java, nhng n thnh cng nht trn

lnh vc ng dng web trn nn Java EE.

Spring Framework gm cc module chnh sau :

Inversion of Control container: hiu chnh cc components ca chng trnh v qun l vng

i (lifecycle) ca cc i tng Java.

Aspect-oriented programming: k thut lp trnh mi cho php ng gi nhng hnh vi c lin

quan n nhiu lp

Data access: lm vic vi relational database management systems (h thng qun l c s d

liu quan h) trn nn Java platform s dng JDBC v cng c object-relational mapping.

Transaction management: thng nht cc hm APIs qun l transaction v iu phi

transactions cho i tng Java.

Model-View-Controller (MVC) mt framework da trn HTTP v Servlet cung cp kh nng

m rng v ty bin nhiu hn.

Remote Access framework: hiu chnh RPC-style trong vic import v export cc i tng

java thng qua mng li h tr phng thc RMI, CORBA v HTTP bao gm SOAP.

Convention-over-configuration: mt chng trnh nhanh mnh trong vic pht trin cc hng

gii quyt cho ci chng trnh s dng Spring enterprise.

Batch processing: mt framework tt cho vic x l mt lng ln thng tin v hm nh

logging/tracing, transaction management, job processing statistics, job restart, skip, and resource

management.

Authentication and authorization: hiu chnh ch an tan bo mt, cung cp cc phng

thc, chng trnh mc c bn cho chng trnh s dng Spring.

Remote Management: hiu chnh cch hin th v qun l cc i tng java mc local hoc

remote qua JMX.

Messaging: hiu chnh vic x l cc thong tin trao i gia cc i tng da trn chun JMS

APIs.

Testing: cung cp cc lp h tr vic vit cc unit kim tra v phn tch li.

Trong ti tm hiu ny. Ch quan tm v cp n module Model-View-Controller (MVC) trong

Spring Framework. Ta gi n l Spring MVC Framework.

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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1.2 Spring MVC Framework : Tng t nh Struts, Spring MVC l mt request-based framework. H nh ngha cc phng php

chung cho tt cc cc response phi c gii quyt bng mt request-based framework. Mc ch ca h

n gin l d dng hn cho developer vit cc b sung v cc ci tin ca ring h.

Spring MVC gip cho vic xy dng ng dng web mt cch cht ch v linh ng. Mu thit k Model-

View-Controller gip phn chia rch ri 3 cng vic business logic, presentation logic, v navigation

logic. Models chu trch nhim ng gi d liu ca ng dng. Views c nhim v hin th thng tin cung

cp bi i tng Model tr v cho ngi dng. Controllers chu trch nhim nhn request t ngi dng

v gi cc dch v bn di x l.

1.2.1 Cc thnh phn quan trng nht v chc nng ca mt Spring MVC framework:

DispatcherServlet l mt lp ng ra qun l ton b cc hnh ng ca framework (front

controller) trong sut qu trnh thc thi cc lnh thng qua HTTP request.

HandlerMapping: chn mt i tng s x l cc request da trn cc thuc tnh v iu kin

ca cc request .

HandlerAdapter: thc thi cc handler c chn.

Controller: ng gia Model v View qun l cc request c gi ti v chuyn cc

response chnh xc.

View: chu trch nhim tr cc respone cho client.

ViewResolver: chn phng php view da trn cc logical name c sn ca View.

HandlerInterceptor: ngn chn (lc) cc request t user. N c coi nh Servlet filter (ko bt

buc v ko b qun l bi DispatcherServlet).

LocaleResolver: x l v lu mt phn cc thng tin ca user.

MultipartResolver: lm cho vic upload file d dng hn bng cch gi cc request li.

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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1.2.2 Lung x l request trong Spring MVC Framework :

Trch t http://www.vaannila.com/spring/spring-mvc-tutorial-1.html

Vic x l request v response trong Spring MVC Framework c m t nh sau :

- Bc 1 :

o DispatcherServlet nhn Request.

o DispatcherServlet tra trong HandlerMapping v gi Controller kt hp vi Request.

- Bc 2 :

o Controller x l Request bng cch gi nhng phng thc dch v thch hp v sau

tr v mt i tng ModelAndView cho DispatcherServlet. i tng ModelAndView

ny cha d liu trong i tng Model v tn ca View.

- Bc 3 :

o DispatcherServlet gi tn ca View n cho mt ViewResolver. ViewResolver s tm

View thc s cn dng.

- Bc 4 :

o DispatcherServlet truyn i tng Model n cho View xc nh hin th kt qu.

o View ly d liu trong i tng Model v hin th kt qu cho ngi dng.

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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2 ng dng minh ho c bn (Hello world):

Sau y l mt v d HelloWorld n gin p dng Spring MVC Framework.

2.1 Mi trng trin khai ng dng : - IDE : NetBeans IDE 6.8

- Web Server : Apache Tomcat 6.0.20

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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2.2 Cc bc thc hin :

2.2.1 To mt Project Spring Web MVC bng NetBeans :

1. Click File 2. Click New Project

3. Click Java Web

4. Select Web Application

5. Click Next

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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6. Nhp Project Name

7. Chn ni lu tr

8. Click Next

10. Click Next

9. Chn Server l

Apache Tomcat 6.0.20

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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Kt qu ta c Project SpringMVCHelloWorld vi cu trc th mc nh sau :

11. Check chn

Spring Web MVC 2.5

12. Click Finish

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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Run ng dng ta c c kt qu nh sau :

2.2.2 Phn tch cc thnh phn trong Project :

- Trong file web.xml, ta thy c dng thit lp ch trang ch ca ng dng l redirect.jsp nh sau

cui file :

- Trong file redirect.jsp ch lm duy nht mt vic l redirect tt c nhng request gi n ti

index.htm :

- Cng trong file web.xml ta thy dng khai bo v nh x sau :

Servlet dispatcher l lp k tha t

org.springframework.web.servlet.DispatcherServlet

nh x tt c requests c mu URL khp *.htm cho lp

DispatcherServlet ca Spring ny

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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- Class DispatcherServlet qun l nhng request n ng dng da trn nhng thit lp cu hnh

c tm thy trong file dispatcher-servlet.xml

- Gi ta xt n file dispatcher-servlet.xml , ta ch n on code sau :

iu ny cho php nh v nhng file trong gi file WAR ca ng dng lc runtime v

response vi trang jsp tng ng.

Khi DispatcherServlet nhn mt request khp *.htm nh l index.htm n s

tm bn trong urlMapping ny mt controller cung cp cho request .

nh x index.htm vi indexController

indexController l lp k tha t

org.springframework.web.servlet.mvc.ParameterizableViewController

y l lp c cung cp bi Spring v n n gin s tr v 1 view.

Logical view name : Dng viewResolver x l

viewResolver nhn vo Logical view name t indexController v

tm trong th mc /WEB.INF/jsp/ trang jsp c tn tng ng.

Spring MVC Framwork Phin bn: 3.0

Bo co tm hiu Ngy: 15/05/2010

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2.2.3 Pht trin mt ng dng n gin :

2.2.3.1 Tng quan :

ng dng ny s bao gm 2 trang JSP hay cn gi l 2 View trong cng ngh Spring Web MVC.

- View th nht cha 1 form HTML vi mt field yu cu nhp tn ca ngi dng. - View th 2 l mt trang n gin ch vic hin th : Hello + [tn ngi dng va nhp]

Nhng views ny s c qun l bi mt controller, controller ny s nhn request v quyt nh view no c tr v. N cng s truyn cho view c chn nhng thng tin cn thit view hin th, nhng thng tin ny c gi l Model. Ta s t tn controller ny l HelloController.

Trong nhng ng dng web phc tp, nhng x l nghip v thuc tng Business Logic khng