package com.tutorialspoint;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class WebController {

   @RequestMapping(value = "/index", method = RequestMethod.GET)
   public String index() {
	   return "index";
   }
   
   @RequestMapping(value = "/redirect", method = RequestMethod.GET)
   public String redirect() {
     
      return "redirect:finalPage";
   }
   
   @RequestMapping(value = "/finalPage", method = RequestMethod.GET)
   public String finalPage() {
     
      return "final";
   }
}

먼저 컨트롤러에 페이지 jsp페이지로 리턴하는 구문들입니다. (예:/index로 들어오면 index.jsp로 갑니다.)


web.xml 에 정의된 내용을 보자

클라이언트 요청과 그요청에 일할 서블릿객체를 연결하는 설정

<web-app id="WebApp_ID" version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 
    <display-name>Spring Page Redirection</display-name>
 
    <servlet>
        <servlet-name>HelloWeb</servlet-name>
        <servlet-class>
           org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
   
    <servlet-mapping>
        <servlet-name>HelloWeb</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
  
</web-app>

HelloWeb-servlet.xml 에 정의된 내용을 보자

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:context="http://www.springframework.org/schema/context"
   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-3.0.xsd
   http://www.springframework.org/schema/context 
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">
 
    <context:component-scan base-package="com.tutorialspoint" />
     
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp" />
    </bean>
</beans>

Component Scan은 XML에 일일이 빈등록을 하지않고 각 빈 클래스에 @Component를 통해 자동 빈 등록 @Component는 스프링이 어노테이션에 담긴 메타정보를 이용하기 시작했을 때 @Autowired와 함께 소개된 대표적인 어노테이션


<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
    <title>Spring Page Redirection</title>
</head>
<body>
<h2>Spring Page Redirection</h2>
<p>Click below button to redirect the result to new page</p>
<form:form method="GET" action="/HelloWeb/redirect">
<table>
    <tr>
    <td>
    <input type="submit" value="Redirect Page"/>
    </td>
    </tr>
</table>  
</form:form>
</body>
</html>

index.jsp로 접근했을 경우 submit으로 /HelloWeb/redirect 구문 action을 수행하게 됩니다.


컨트롤러에서 

   @RequestMapping(value = "/redirect", method = RequestMethod.GET)
   public String redirect() {
     
      return "redirect:finalPage";
   }

이구문을 통해 finalPage로 redirect됩니다.

@RequestMapping(value = "/finalPage", method = RequestMethod.GET)
   public String finalPage() {
     
      return "final";
   }

다시 final.jsp로 리턴


최종 final.jsp 도착


<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
    <title>Spring Page Redirection</title>
</head>
<body>

<h2>Redirected Page</h2>

</body>
</html>


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