2016년 11월 1일 화요일

springMVC

DevJang 오후 11:30 kosta, kosta framework, springMVC No comments

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SpringMVC

[출처] SpringMVC 환경설정 (비공개 카페)

여태까지는 Servlet / JSP배우면서 Model2 MVC를 흉내내거나

spring넘어와서도 Java Project 생성 후 Model2 MVC를 흉내내는 수준의 작업이였다.

환경설정 및 개발단계

1. spring library 를 maven으로 추가

2. log4j 설정파일확인 (선택적)

3. web.xml에서

springframework의 DispatcherServlet 설정 추가

( servlet-name 과 servlet-class , url-pattern )

[servlet name]-servlet.xml 로 springmvc framework 설정

파일을 기본적을 찾게 된다.

4. url-pattern 을 *.do 형태로 지정하여

.do로 마치는 모든 요청을 spring의 DispatcherServlet이 처리

하도록 설정한다.

5. springmvc 설정파일

1) HandlerMapping 등록

2) ViewResolver 등록

3) 사용될 컨트롤러를 등록

이동할 URL을 *.do로 설정하여 끝나는 부분이 do인 url을 걸러낸다

* web.xml *

<servlet>

    <servlet-name>dispatcher</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

</servlet>

<servlet-mapping>

    <servlet-name>dispatcher</servlet-name>

    <url-pattern>*.do</url-pattern>

</servlet-mapping>

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.do로 들어온 url을 CustomerController로 보낸다

* dispatcher-servlet.xml *

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
HandlerMapping 등록

<bean id="handlerMapping" 

class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
viewResolver 등록

<bean id="viewResolver" 

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

    <property name="prefix" value="/views/" />

    <property name="suffix" value=".jsp"/>

</bean>

<bean id="methodNameResolver" 

class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">

    <property name="paramName" value="command"/>

</bean>

<bean id="customerDAO" class="model.CustomerDAOImpl"> </bean>

<bean id="customerService" class="model.CustomerServiceImpl">

    <constructor-arg ref="customerDAO"/>

</bean>
사용될 컨트롤러를 등록 

<bean id="/customer.do" class="controller.CustomerController">

    <constructor-arg ref="customerService"/>

    <property name="methodNameResolver"  ref="methodNameResolver"/>

</bean>

</beans>

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위처럼 xml을 설정한 후 id를 검색한다.

 * index.jsp *

<form action = "customer.do">

<input type = "hidden" name = "command" value = "findCustomerById">

아이디 <input type = "text" name = "id">

         <input type = "submit" value = "검색">

</form>

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Controller -> Service -> DAO -> Controller -> View로 진행된다

* STEP1 -> find_ok.jsp or find_fail.jsp *

public class CustomerController extends MultiActionController {

    private CustomerService customerService;

    public CustomerController(CustomerService customerService) {

        super();

        this.customerService = customerService;

    }

    public ModelAndView findCustomerById

    (HttpServletRequest request, HttpServletResponse response) {

        String id = request.getParameter("id");

        CustomerVO cvo = customerService.findCustomerById(id);

        if (cvo == null)

            return new ModelAndView("find_fail");

        else

            return new ModelAndView("find_ok", "cvo", cvo);

    }

}

* STEP2 *

public class CustomerServiceImpl implements CustomerService {

    private CustomerDAO customerDAO;    

    public CustomerServiceImpl(CustomerDAO customerDAO) {

        super();

        this.customerDAO = customerDAO;

    }

    @Override

    public CustomerVO findCustomerById(String id){

        return customerDAO.findCustomerById(id);

    }

}

* STEP3 -> STEP1 *

(DB없이 test)

public class CustomerDAOImpl implements CustomerDAO {

    @Override

    public CustomerVO findCustomerById(String id) {

        CustomerVO vo = null;

        if (id.equals("java"))

            vo = new CustomerVO(id, "손재만", "판교");

        return vo;

    }

}

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