Spring@Autowired（必需=真）为空[重复]

Question

我有一个带有JSF2 end Spring4.3的webmodule。在backing bean中，我使用@autowired对jar的服务进行DI。在EAR模块中有WAR、带有@serviceSpring的JAR和带有Spring配置文件的JAR。

下面是web.xml片段：

    <context-param>
        <param-name>locatorFactorySelector</param-name>
        <param-value>classpath:beanRefContext.xml</param-value>
    </context-param>

    <context-param>
        <param-name>parentContextKey</param-name>
        <param-value>sharedContext</param-value>
    </context-param>
    <context-param>
    <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
<listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

applicationcontext.xml:

    <context:annotation-config />
    <context:spring-configured />
<!-- package of @Service class in jar module in EAR-- >
    <context:component-scan base-package="com.ipdb.service" /> 

<bean id="sharedContext" class="org.springframework.context.support.ClassPathXmlApplicationContext">    <constructor-arg>
    <list>
        <value>spring-ctx.xml</value>
    </list>
</constructor-arg>    </bean>

当我在Backing Bean中使用@autowired(required=null)时，值为null（没有任何异常）。我的JSF bean

@Component
@ManagedBean
@ViewScoped
public class PortfolioController {


    @Autowired(required = true)
    private PortfolioService portfolioService;

...

你能帮帮我吗，拜托。

Answer 1

PortfolioController被认为是JSF上下文bean添加@Component到@ManagedBean是完全错误的，您不能在两个不同的上下文(JSF和Spring)中将同一个类标记为bean。

有两种解决方案，要么使PortfolioController成为spring bean，从而删除@ManagedBean和@viewscoped，要么通过JSF注入注释@ManagedProperty注入PortfolioController

@ManagedProperty("#{portfolioService}")
private PortfolioService portfolioService;