没有符合条件的bean。。。SpringWebMVC:applicationContext中定义的bean在ServletContext中不可见

Question

我对APplicationContext中定义的bean有问题。（可能是我的问题是理解应用程序~Servlet上下文？）

所以，我定义

应用程序上下文。xml

    <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:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc 

http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.
<!-- // configure manage of transactions using annotations @Transactional // -->

<tx:annotation-driven />

<!-- // SPRING-SECURITY // -->
<import resource="security-servlet.xml" />

<!-- // DB1 - Database Configuration // -->
<context:property-placeholder location="/WEB-INF/spring/db.config/jdbc-db1.properties" />

<import resource="./db.config/DataSource-db1.xml" />
<import resource="./db.config/jpa-config-db1.xml" />

<!-- Auto scan the components -->
<context:annotation-config />

<!-- // common beans for rest & mvc // -->
<context:component-scan base-package="abc.def.data"  />

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

我还有MVCServlet。xml在web中定义。xml格式：

    <!-- // MVC // -->
<servlet>
    <servlet-name>mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/spring/mvc-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>mvc</servlet-name>
    <url-pattern>*.htm</url-pattern>
</servlet-mapping>

在我的@controller中，我使用bean messageSource的方式如下：

@Controller
@RequestMapping( value = "/admin/su" )
public class AdminSuController {
private final Logger LOG = LoggerFactory.getLogger( getClass() );
    .....
    @Autowired
    private ResourceBundleMessageSource messageSource;

当我在MVCServlet中定义bean时。xml-只要我将其移动到（正如我理解servletContext的根上下文）ApplicationContext，就没有问题。xml（我这样做是为了在REST-servlet.xml和其他@controller-s中使用这个bean），我得到：

#19:41:26.594 [localhost-startStop-1] ERROR 

Answer 1

谢谢https://stackoverflow.com/users/2843242/oerlien 将messageSource移动到applicationContext会导致默认messageSource在dispatcher servlet上下文中不可见

In your applicationContext.xml:

<bean id="baseMessageSource" class="org.springframework...YourMessageSourceClass">
   ...
</bean>

In your xxx-servlet.xml:

<bean id="messageSource" parent="baseMessageSource" />