Spring MVC가 세션에 설정된 속성을 가져올 수 없습니다.

Spring MVC와 JQUERY를 사용하여 양식에서 서버로 데이터를 제출하는 2 단계 프로세스를 구현하고 있습니다.

1. JQUERY ajax POST 요청은 파일 찾아보기를 클릭하면 양식에서 서버로 파일 데이터를 제출합니다. 이것은 파일 서버에 파일을 저장하고 파일 정보를 저장하는 데이터베이스에 항목을 생성하며 모드는 초안으로 설정됩니다.

2. 사용자가 양식 제출 버튼을 클릭하면 '파일 제목'등과 같은 다른 양식 데이터가 서버에 제출됩니다. 데이터베이스 입력은 이제 모드를 '완료'로 설정해야합니다.

1 단계에서는 데이터베이스 컬럼의 Id, 파일명과 같은 파일 데이터를 세션 속성으로 설정합니다.

/**
 * Upload single file using Spring Controller
 */
@RequestMapping(value = "/uploadFileDraft", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public void uploadFileDraft(@RequestParam("file") MultipartFile file,Model map,  HttpSession httpSession) {

    PostDto draftPost = new PostDto();
    draftPost.setPostedDate(new Date());
    draftPost.setStrRawFileName(file.getOriginalFilename());

    //Logic to save this object into database.
    postService.uploadPostDraft(draftPost);

    //now set the data into session object
    httpSession.setAttribute("filePostDraftDto", draftPost);
}

이제 2 단계에서 세션에서이 Dto 개체를 검색하고 다른 서비스를 호출하려고합니다. 그러나 그는 세션에 존재하지 않습니다.

@RequestMapping(value = "/uploadFilePublish", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public void uploadVideoPublish(@RequestParam("strVideoTitle") String strVideoTitle, Model map, HttpSession httpSession) {
    PostDto postDtoDraft = null;
        if(null!= httpSession.getAttribute("filePostDraftDto"))
        {
            postDtoDraft = (PostDto)httpSession.getAttribute("filePostDraftDto");
        }


        if(null!=postDtoDraft )
        {
            System.out.println("file name from session is: "+postDtoDraft.getStrFileName());
        }
        else
        {
            System.out.println("error: postDtoDraft is null");
        }
    }

}

다음은 매번 인쇄됩니다. error : postDtoDraft is null

내 web.xml은 다음과 같습니다.

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name>WebConnect</display-name>

<!-- Spring Security Configuration File -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring-security.xml</param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlet and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
    <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
</listener>


<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>

<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>index.htm</welcome-file>
    </welcome-file-list>
<!-- session time out set as 30 minites -->
<session-config>
    <session-timeout>30</session-timeout>
</session-config>

applicationConfig.xml은 다음과 같습니다.

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

<context:annotation-config />
<context:component-scan base-package="com.mycomp.myproj" />
<context:spring-configured />

<neo4j:config graphDatabaseService="graphDatabaseService" />
<neo4j:repositories base-package="com.mycomp.myproj.repository" />

<bean id="viewResolver"
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix">
        <value>/WEB-INF/jsp/</value>
    </property>
    <property name="suffix">
        <value>.jsp</value>
    </property>
</bean>

<bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

    <!-- setting maximum upload size -->
    <property name="maxUploadSize" value="10000000000" />

</bean>

<mvc:resources mapping="/resources/**" location="/resources/" />
<mvc:default-servlet-handler />
<mvc:annotation-driven />

<tx:annotation-driven mode="aspectj"
    transaction-manager="transactionManager" />

spring-security.xml은 다음과 같습니다.

<beans:beans xmlns="http://www.springframework.org/schema/security"
xmlns:beans="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-3.0.xsd
       http://www.springframework.org/schema/security
       http://www.springframework.org/schema/security/spring-security.xsd">

<http pattern="/resources/**" security="none" />

<http authentication-manager-ref="userAuthManager">
    <intercept-url pattern="/" access="IS_AUTHENTICATED_ANONYMOUSLY" />
    <intercept-url pattern="/login" access="IS_AUTHENTICATED_ANONYMOUSLY" />
    <intercept-url pattern="/register" access="IS_AUTHENTICATED_ANONYMOUSLY" />
    <intercept-url pattern="/**" access="ROLE_USER" />
    <form-login login-page='/' authentication-failure-url="/" />
    <logout invalidate-session="true" logout-success-url="/" logout-url="/j_spring_security_logout" />
    <session-management invalid-session-url="/">
        <concurrency-control max-sessions="1"
            expired-url="/" />
    </session-management>
</http>

<beans:bean id="userAuthManager" class="com.inw.pyt.security.UserAuthManager">
</beans:bean>

<beans:bean id="passwordEncoder"
    class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder" />