通过扩展Sp​​ringBeanAutowiringSupport而暴露的Web服务无法注入@Autowired依赖项

Question

通过扩展Sp​​ringBeanAutowiringSupport暴露我的Web服务无法注入@Autowired依赖项。

Web服务部署正常，我可以调用@WebMethod，但由于注入失败，我得到NullPointerException。

我将System.out.println("Consructing XmlContactMapper...");放在XmlContactMapper的构造函数中（我的一个依赖项是@Autowired）。当我部署Web服务时，我看到调试行，所以我知道正在调用构造函数。但由于某种原因，XmlContactMapper的实例没有被注入到我的ContactServiceImpl xmlMapper属性中。

关于我做错的任何想法？

使用...

• Spring 3.0.5.RELEASE
• GlassFish 3.1
• jaxws-rt 2.1.4

的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee" 
         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         id="WebApp_ID" version="3.0" metadata-complete="true">

    <display-name>contact-sib</display-name>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>           
            classpath:/config/bean-config.xml
        </param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>JaxWsEndpoint</servlet-name>
        <servlet-class>com.sun.xml.ws.transport.http.servlet.WSServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>JaxWsEndpoint</servlet-name>
        <url-pattern>/services/contact</url-pattern>
    </servlet-mapping>


</web-app>

太阳jaxws.xml

<?xml version="1.0" encoding="UTF-8"?>
<endpoints xmlns="http://java.sun.com/xml/ns/jax-ws/ri/runtime"
           version="2.0">

  <endpoint name="ContactService" 
            implementation="com.bb.sc.sib.contact.ContactServiceImpl" 
            url-pattern="/services/contact"/>

</endpoints>

豆-config.xml中

<?xml version="1.0" encoding="UTF-8"?>
<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:p = "http://www.springframework.org/schema/p"
       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
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <context:component-scan base-package="com.bb.sc.sib.contact"/>
    <context:annotation-config/>

    <bean id="xmlMapper" class="com.bb.sc.sib.contact.XmlContactMapper"/>

</beans>

网络服务

@WebService (endpointInterface="com.bb.sc.sei.contact.ContactService", serviceName="JaxWsContactService")
public class ContactServiceImpl extends SpringBeanAutowiringSupport implements ContactService {
    @Autowired
    private ContactComponent contactComponent;
    @Autowired
    private MapperFacade xmlMapper;

登录

INFO: 10:56:40.073 [admin-thread-pool-4848(419)] DEBUG o.s.w.c.s.SpringBeanAutowiringSupport - Current WebApplicationContext is not available for processing of ContactServiceImpl: Make sure this class gets constructed in a Spring web application. Proceeding without injection.

Answer 1

像@Biji建议的那样，我认为这可能是您的ContactServiceImpl与ContactComponent之间的加载顺序问题

通常，您需要扩展SpringBeanAutowiringSupport的原因是您有一些在Spring容器之外实例化的bean，但您希望它通过Spring解析它的依赖关系。

由于您使用的是Glassfish + Metro，您可以查看Metro Spring集成支持： http://jax-ws-commons.java.net/spring/

使用此路由， com.sun.xml.ws.transport.http.servlet.WSSpringServlet 应该处理与Spring上下文相关的正确加载顺序。

Answer 2

听众的顺序很重要。必须在ContextLoaderListener之前定义WSServletContextListener。

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:wsContext.xml</param-value>
</context-param>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
    <listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class>
</listener>

Answer 3

正如Zeemee所说，听众定义的顺序至关重要。另外，我必须在<absolute-ordering/>中添加web.xml，因为Tomcat 8.0.26不依赖于订单。