Spring MVC 3+；Hibernate：对象的不同地址（一次通过服务加载，一次通过实体加载）

我有一个实体“账户”，它与实体“角色”有很多关系。当我通过JSP表单添加一个新的“帐户”时，一切正常。我可以在那里通过复选框选择我想与帐户关联的所有角色

如果我现在尝试编辑添加的帐户，我会再次获得角色的复选框，但没有选中任何一个（我在添加帐户时选中的那些复选框应该被选中）

我调试了整个过程，发现通过account.getRoles（）加载的Role对象的地址与通过roleService.list（）加载的地址不同。因此，我想一定有一个关于会议的问题，但我不知道我应该从哪里开始搜索：S

科目实体摘录：

@ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
@JoinTable(name = "Account_Role", joinColumns = { 
    @JoinColumn(name = "Account_id") }, 
    inverseJoinColumns = { @JoinColumn(name = "Role_id") })
private Set<Role> roles = new HashSet<Role>(0);

@Transactional
public List<Role> list() {
    return roleDAO.list();
}

@Autowired
private SessionFactory sessionFactory;

@SuppressWarnings("unchecked")
public List<Role> list() {
    return sessionFactory.getCurrentSession().createQuery("from Role").list();
}

<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="fi.java.elearning.*" />

<!-- Configures the annotation-driven Spring MVC Controller programming model -->
<mvc:annotation-driven /> 

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />

<!-- Include Tiles for View Rendering -->
<bean id="viewResolver"
    class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass">
        <value>
            org.springframework.web.servlet.view.tiles2.TilesView
        </value>
    </property>
</bean>

<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
    <property name="definitions">
        <list>
            <value>/WEB-INF/configurations/tiles/tiles.xml</value>
        </list>
    </property>
</bean>

<!-- multipart file resolver bean -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>   


<!-- multi language support -->

<bean id="localeResolver"
    class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
    <property name="defaultLocale" value="de" />
</bean>

<bean id="localeChangeInterceptor"
    class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
    <property name="paramName" value="language" />
</bean>

<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" >
    <property name="interceptors">
       <list>
        <ref bean="localeChangeInterceptor" />
       </list>
    </property>
</bean>

<bean id="messageSource"
    class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basename" value="languages/messages" />
</bean>

<!-- Import Hibernate Context -->
<import resource="configurations/hibernate/hibernate-context.xml" />

<!-- Import Spring Security -->
<import resource="configurations/spring/spring-security.xml" />

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</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>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>spring</servlet-name>
  <url-pattern>/</url-pattern>
</servlet-mapping>
<error-page>
  <error-code>404</error-code>
  <location>/WEB-INF/views/contents/exceptions/404.jsp</location>
</error-page>

<context:property-placeholder location="/WEB-INF/configurations/hibernate/database.properties" />

<!-- Declare the Hibernate SessionFactory for retrieving Hibernate sessions -->
<!-- See http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/orm/hibernate3/annotation/AnnotationSessionFactoryBean.html -->                           
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/SessionFactory.html -->
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/Session.html -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
             p:dataSource-ref="dataSource"
             p:configLocation="${hibernate.config}"
             p:packagesToScan="fi.java.elearning"/>

<!-- Declare a datasource that has pooling capabilities-->   
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="${app.jdbc.driverClassName}"
            p:jdbcUrl="${app.jdbc.url}"
            p:user="${app.jdbc.username}"
            p:password="${app.jdbc.password}"
            p:acquireIncrement="5"
            p:idleConnectionTestPeriod="60"
            p:maxPoolSize="100"
            p:maxStatements="50"
            p:minPoolSize="10" />

<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" 
            p:sessionFactory-ref="sessionFactory" />

<!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />   

从springservlet.xml中提取：

@ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
@JoinTable(name = "Account_Role", joinColumns = { 
    @JoinColumn(name = "Account_id") }, 
    inverseJoinColumns = { @JoinColumn(name = "Role_id") })
private Set<Role> roles = new HashSet<Role>(0);

@Transactional
public List<Role> list() {
    return roleDAO.list();
}

@Autowired
private SessionFactory sessionFactory;

@SuppressWarnings("unchecked")
public List<Role> list() {
    return sessionFactory.getCurrentSession().createQuery("from Role").list();
}

<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="fi.java.elearning.*" />

<!-- Configures the annotation-driven Spring MVC Controller programming model -->
<mvc:annotation-driven /> 

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />

<!-- Include Tiles for View Rendering -->
<bean id="viewResolver"
    class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass">
        <value>
            org.springframework.web.servlet.view.tiles2.TilesView
        </value>
    </property>
</bean>

<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
    <property name="definitions">
        <list>
            <value>/WEB-INF/configurations/tiles/tiles.xml</value>
        </list>
    </property>
</bean>

<!-- multipart file resolver bean -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>   


<!-- multi language support -->

<bean id="localeResolver"
    class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
    <property name="defaultLocale" value="de" />
</bean>

<bean id="localeChangeInterceptor"
    class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
    <property name="paramName" value="language" />
</bean>

<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" >
    <property name="interceptors">
       <list>
        <ref bean="localeChangeInterceptor" />
       </list>
    </property>
</bean>

<bean id="messageSource"
    class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basename" value="languages/messages" />
</bean>

<!-- Import Hibernate Context -->
<import resource="configurations/hibernate/hibernate-context.xml" />

<!-- Import Spring Security -->
<import resource="configurations/spring/spring-security.xml" />

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</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>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>spring</servlet-name>
  <url-pattern>/</url-pattern>
</servlet-mapping>
<error-page>
  <error-code>404</error-code>
  <location>/WEB-INF/views/contents/exceptions/404.jsp</location>
</error-page>

<context:property-placeholder location="/WEB-INF/configurations/hibernate/database.properties" />

<!-- Declare the Hibernate SessionFactory for retrieving Hibernate sessions -->
<!-- See http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/orm/hibernate3/annotation/AnnotationSessionFactoryBean.html -->                           
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/SessionFactory.html -->
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/Session.html -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
             p:dataSource-ref="dataSource"
             p:configLocation="${hibernate.config}"
             p:packagesToScan="fi.java.elearning"/>

<!-- Declare a datasource that has pooling capabilities-->   
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="${app.jdbc.driverClassName}"
            p:jdbcUrl="${app.jdbc.url}"
            p:user="${app.jdbc.username}"
            p:password="${app.jdbc.password}"
            p:acquireIncrement="5"
            p:idleConnectionTestPeriod="60"
            p:maxPoolSize="100"
            p:maxStatements="50"
            p:minPoolSize="10" />

<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" 
            p:sessionFactory-ref="sessionFactory" />

<!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />   

org.springframework.web.servlet.view.tiles2.TilesView
/WEB-INF/configurations/tiles/tiles.xml

从web.xml中提取：

@ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
@JoinTable(name = "Account_Role", joinColumns = { 
    @JoinColumn(name = "Account_id") }, 
    inverseJoinColumns = { @JoinColumn(name = "Role_id") })
private Set<Role> roles = new HashSet<Role>(0);

@Transactional
public List<Role> list() {
    return roleDAO.list();
}

@Autowired
private SessionFactory sessionFactory;

@SuppressWarnings("unchecked")
public List<Role> list() {
    return sessionFactory.getCurrentSession().createQuery("from Role").list();
}

<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="fi.java.elearning.*" />

<!-- Configures the annotation-driven Spring MVC Controller programming model -->
<mvc:annotation-driven /> 

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />

<!-- Include Tiles for View Rendering -->
<bean id="viewResolver"
    class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass">
        <value>
            org.springframework.web.servlet.view.tiles2.TilesView
        </value>
    </property>
</bean>

<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
    <property name="definitions">
        <list>
            <value>/WEB-INF/configurations/tiles/tiles.xml</value>
        </list>
    </property>
</bean>

<!-- multipart file resolver bean -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>   


<!-- multi language support -->

<bean id="localeResolver"
    class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
    <property name="defaultLocale" value="de" />
</bean>

<bean id="localeChangeInterceptor"
    class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
    <property name="paramName" value="language" />
</bean>

<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" >
    <property name="interceptors">
       <list>
        <ref bean="localeChangeInterceptor" />
       </list>
    </property>
</bean>

<bean id="messageSource"
    class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basename" value="languages/messages" />
</bean>

<!-- Import Hibernate Context -->
<import resource="configurations/hibernate/hibernate-context.xml" />

<!-- Import Spring Security -->
<import resource="configurations/spring/spring-security.xml" />

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</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>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>spring</servlet-name>
  <url-pattern>/</url-pattern>
</servlet-mapping>
<error-page>
  <error-code>404</error-code>
  <location>/WEB-INF/views/contents/exceptions/404.jsp</location>
</error-page>

<context:property-placeholder location="/WEB-INF/configurations/hibernate/database.properties" />

<!-- Declare the Hibernate SessionFactory for retrieving Hibernate sessions -->
<!-- See http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/orm/hibernate3/annotation/AnnotationSessionFactoryBean.html -->                           
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/SessionFactory.html -->
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/Session.html -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
             p:dataSource-ref="dataSource"
             p:configLocation="${hibernate.config}"
             p:packagesToScan="fi.java.elearning"/>

<!-- Declare a datasource that has pooling capabilities-->   
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="${app.jdbc.driverClassName}"
            p:jdbcUrl="${app.jdbc.url}"
            p:user="${app.jdbc.username}"
            p:password="${app.jdbc.password}"
            p:acquireIncrement="5"
            p:idleConnectionTestPeriod="60"
            p:maxPoolSize="100"
            p:maxStatements="50"
            p:minPoolSize="10" />

<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" 
            p:sessionFactory-ref="sessionFactory" />

<!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />   

上下文配置位置
/WEB-INF/spring-servlet.xml
org.springframework.web.context.ContextLoaderListener
springSecurityFilterChain
org.springframework.web.filter.DelegatingFilterProxy
springSecurityFilterChain
/*
春天
org.springframework.web.servlet.DispatcherServlet
1.
春天
/
404
/WEB-INF/views/contents/exceptions/404.jsp

从hibernate.context.xml中提取：

@ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
@JoinTable(name = "Account_Role", joinColumns = { 
    @JoinColumn(name = "Account_id") }, 
    inverseJoinColumns = { @JoinColumn(name = "Role_id") })
private Set<Role> roles = new HashSet<Role>(0);

@Transactional
public List<Role> list() {
    return roleDAO.list();
}

@Autowired
private SessionFactory sessionFactory;

@SuppressWarnings("unchecked")
public List<Role> list() {
    return sessionFactory.getCurrentSession().createQuery("from Role").list();
}

<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="fi.java.elearning.*" />

<!-- Configures the annotation-driven Spring MVC Controller programming model -->
<mvc:annotation-driven /> 

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />

<!-- Include Tiles for View Rendering -->
<bean id="viewResolver"
    class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass">
        <value>
            org.springframework.web.servlet.view.tiles2.TilesView
        </value>
    </property>
</bean>

<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
    <property name="definitions">
        <list>
            <value>/WEB-INF/configurations/tiles/tiles.xml</value>
        </list>
    </property>
</bean>

<!-- multipart file resolver bean -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>   


<!-- multi language support -->

<bean id="localeResolver"
    class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
    <property name="defaultLocale" value="de" />
</bean>

<bean id="localeChangeInterceptor"
    class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
    <property name="paramName" value="language" />
</bean>

<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" >
    <property name="interceptors">
       <list>
        <ref bean="localeChangeInterceptor" />
       </list>
    </property>
</bean>

<bean id="messageSource"
    class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basename" value="languages/messages" />
</bean>

<!-- Import Hibernate Context -->
<import resource="configurations/hibernate/hibernate-context.xml" />

<!-- Import Spring Security -->
<import resource="configurations/spring/spring-security.xml" />

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</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>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>spring</servlet-name>
  <url-pattern>/</url-pattern>
</servlet-mapping>
<error-page>
  <error-code>404</error-code>
  <location>/WEB-INF/views/contents/exceptions/404.jsp</location>
</error-page>

<context:property-placeholder location="/WEB-INF/configurations/hibernate/database.properties" />

<!-- Declare the Hibernate SessionFactory for retrieving Hibernate sessions -->
<!-- See http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/orm/hibernate3/annotation/AnnotationSessionFactoryBean.html -->                           
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/SessionFactory.html -->
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/Session.html -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
             p:dataSource-ref="dataSource"
             p:configLocation="${hibernate.config}"
             p:packagesToScan="fi.java.elearning"/>

<!-- Declare a datasource that has pooling capabilities-->   
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="${app.jdbc.driverClassName}"
            p:jdbcUrl="${app.jdbc.url}"
            p:user="${app.jdbc.username}"
            p:password="${app.jdbc.password}"
            p:acquireIncrement="5"
            p:idleConnectionTestPeriod="60"
            p:maxPoolSize="100"
            p:maxStatements="50"
            p:minPoolSize="10" />

<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" 
            p:sessionFactory-ref="sessionFactory" />

<!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />   

我在控制器中使用的System.out.println（）显示了（据我所知）问题：

从控制台提取：

@ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch = FetchType.EAGER)
@JoinTable(name = "Account_Role", joinColumns = { 
    @JoinColumn(name = "Account_id") }, 
    inverseJoinColumns = { @JoinColumn(name = "Role_id") })
private Set<Role> roles = new HashSet<Role>(0);

@Transactional
public List<Role> list() {
    return roleDAO.list();
}

@Autowired
private SessionFactory sessionFactory;

@SuppressWarnings("unchecked")
public List<Role> list() {
    return sessionFactory.getCurrentSession().createQuery("from Role").list();
}

<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config />

<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="fi.java.elearning.*" />

<!-- Configures the annotation-driven Spring MVC Controller programming model -->
<mvc:annotation-driven /> 

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />

<!-- Include Tiles for View Rendering -->
<bean id="viewResolver"
    class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass">
        <value>
            org.springframework.web.servlet.view.tiles2.TilesView
        </value>
    </property>
</bean>

<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
    <property name="definitions">
        <list>
            <value>/WEB-INF/configurations/tiles/tiles.xml</value>
        </list>
    </property>
</bean>

<!-- multipart file resolver bean -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>   


<!-- multi language support -->

<bean id="localeResolver"
    class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
    <property name="defaultLocale" value="de" />
</bean>

<bean id="localeChangeInterceptor"
    class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
    <property name="paramName" value="language" />
</bean>

<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" >
    <property name="interceptors">
       <list>
        <ref bean="localeChangeInterceptor" />
       </list>
    </property>
</bean>

<bean id="messageSource"
    class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basename" value="languages/messages" />
</bean>

<!-- Import Hibernate Context -->
<import resource="configurations/hibernate/hibernate-context.xml" />

<!-- Import Spring Security -->
<import resource="configurations/spring/spring-security.xml" />

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</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>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>spring</servlet-name>
  <url-pattern>/</url-pattern>
</servlet-mapping>
<error-page>
  <error-code>404</error-code>
  <location>/WEB-INF/views/contents/exceptions/404.jsp</location>
</error-page>

<context:property-placeholder location="/WEB-INF/configurations/hibernate/database.properties" />

<!-- Declare the Hibernate SessionFactory for retrieving Hibernate sessions -->
<!-- See http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/orm/hibernate3/annotation/AnnotationSessionFactoryBean.html -->                           
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/SessionFactory.html -->
<!-- See http://docs.jboss.org/hibernate/stable/core/api/index.html?org/hibernate/Session.html -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
             p:dataSource-ref="dataSource"
             p:configLocation="${hibernate.config}"
             p:packagesToScan="fi.java.elearning"/>

<!-- Declare a datasource that has pooling capabilities-->   
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
            destroy-method="close"
            p:driverClass="${app.jdbc.driverClassName}"
            p:jdbcUrl="${app.jdbc.url}"
            p:user="${app.jdbc.username}"
            p:password="${app.jdbc.password}"
            p:acquireIncrement="5"
            p:idleConnectionTestPeriod="60"
            p:maxPoolSize="100"
            p:maxStatements="50"
            p:minPoolSize="10" />

<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" 
            p:sessionFactory-ref="sessionFactory" />

<!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />   

角色项：ID=1 | NAME=ACCOUNT | u MANAGER |†HASH=fi.java.elearning.data.model。Role@9293709 角色服务：ID=1 | NAME=ACCOUNT | u MANAGER |†HASH=fi.java.elearning.data.model。Role@2721e92 角色服务：ID=2 | NAME=Test |†HASH=fi.java.elearning.data.model。Role@1235047f

因此，ITEM是我添加帐户时最初选中的角色。当我编辑帐户时，应该已经检查了这个。但事实并非如此。我认为这与不同的地址/参考（9293709/2721e92）有关。如果我在控制器操作的顶部添加@Transconational注释，那么引用是正确的。然后选中该复选框。但这对我来说毫无意义。事务注释应该在ServiceLayer中，不是吗

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非常感谢您的帮助…

之所以会得到不同的对象实例，是因为您在两个不同的事务中加载它们，从而在两个不同的持久性上下文中加载它们。当您将@Transactional添加到控制器方法时，两个加载都发生在同一个事务中（在控制器中启动的一个），因此实例是相同的，因为它们来自相同的持久性上下文

我个人不知道将控制器方法标记为事务性方法会有很大的问题，但是如果您不想这样做，您能否在Role对象上实现equals（）（和hashCode（））并回避它们是不同实例的事实