Spring Boot将JAX-WS webservice注册为bean

Question

在我的基于spring boot ws的应用程序中，我遵循契约优先的方法创建了一个jax-ws webservice。Web服务已启动，但我无法在WebService中调用其他bean。

@WebService(endpointInterface = "com.foo.bar.MyServicePortType")
@Service
public class MySoapService implements MyServicePortType {
    @Autowired
    private MyBean obj;

    public Res method(final Req request) {
        System.out.println("\n\n\nCALLING.......\n\n" + obj.toString()); //obj is null here
        return new Res();
    }
}

由于我的应用程序是基于Spring boot构建的，所以没有xml文件。目前，我有sun-jaxws.xml文件和endpoint配置。如何在spring boot应用程序中进行以下配置

<wss:binding url="/hello">
    <wss:service>
        <ws:service bean="#helloWs"/>
    </wss:service>
</wss:binding>

下面是我的SpringBootServletInitializer类：

@Configuration
public class WebXml extends SpringBootServletInitializer {
    @Override
    protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
        return application.sources(WSApplication.class);
    }

    @Bean
    public ServletRegistrationBean jaxws() {
        final ServletRegistrationBean jaxws = new ServletRegistrationBean(new WSServlet(), "/jaxws");
        return jaxws;
    }

    @Override
    public void onStartup(final ServletContext servletContext) throws ServletException {
        super.onStartup(servletContext);
        servletContext.addListener(new WSServletContextListener());
    }
}

Answer 1

扩展SpringBeanAutowiringSupport是从当前spring根web应用程序上下文中为JAX-WSendpoint类注入bean的推荐方法。但是，这并不适用于spring boot，因为它在servlet上下文初始化方面有点不同。

SpringBootServletInitializer.startup()使用自定义的ContextLoaderListener并且不将创建的应用程序上下文传递给ContextLoader。稍后，当初始化JAX-WSendpoint类的对象时，SpringBeanAutowiringSupport依赖于ContextLoader来检索当前的应用程序上下文，并且总是获得null。

public abstract class SpringBootServletInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        WebApplicationContext rootAppContext = createRootApplicationContext(
                servletContext);
        if (rootAppContext != null) {
            servletContext.addListener(new ContextLoaderListener(rootAppContext) {
                @Override
                public void contextInitialized(ServletContextEvent event) {
                    // no-op because the application context is already initialized
                }
            });
        }
        ......
    }
}

您可以注册一个实现org.springframework.boot.context.embeddedd.ServletContextInitializer的bean，以便在startup()期间检索应用程序上下文。

@Configuration
public class WebApplicationContextLocator implements ServletContextInitializer {

    private static WebApplicationContext webApplicationContext;

    public static WebApplicationContext getCurrentWebApplicationContext() {
        return webApplicationContext;
    }

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
    }
}

然后，您可以在JAX-WSendpoint类中实现自自动化。

@WebService
public class ServiceImpl implements ServicePortType {

    @Autowired
    private FooBean bean;

    public ServiceImpl() {
        AutowiredAnnotationBeanPostProcessor bpp = new AutowiredAnnotationBeanPostProcessor();
        WebApplicationContext currentContext = WebApplicationContextLocator.getCurrentWebApplicationContext();
        bpp.setBeanFactory(currentContext.getAutowireCapableBeanFactory());
        bpp.processInjection(this);
    }

    // alternative constructor to facilitate unit testing.
    protected ServiceImpl(ApplicationContext context) {
        AutowiredAnnotationBeanPostProcessor bpp = new AutowiredAnnotationBeanPostProcessor();
        bpp.setBeanFactory(new DefaultListableBeanFactory(context));
        bpp.processInjection(this);
    }
}

在单元测试中，您可以注入当前的spring应用程序上下文，并用它调用替代构造函数。

@Autowired 
private ApplicationContext context;

private ServicePortType service;

@Before
public void setup() {
    this.service = new ServiceImpl(this.context);
}