无法在Spring Boot应用程序中加载应用程序上下文

Question

我正在处理一个Spring Boot应用程序，其中我使用该应用程序公开SOAP WebService。我在Spring boot应用程序中使用Apache CFX framework for SOAP impl。我正在使用基于注释的方法。

我在一个bean中的Spring Boot配置文件中设置应用程序上下文时遇到了问题。下面是我的代码。

@SpringBootApplication
@ComponentScan("com.test")
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
   }
}

配置文件如下所示。

@Configuration
public class WebServiceConfiguration {

//All individual bean definitions should go here
@Autowired
ApplicationContext appContext;

@Bean
public ServletRegistrationBean cxfServlet() {
    return new ServletRegistrationBean(new CXFServlet(), "/soap-api/*");
}

@Bean(name = Bus.DEFAULT_BUS_ID)
public SpringBus springBus() {
    return new SpringBus();
}


@Bean(name="IValidator")
public IValidator getValidator(){
    return new Validator();
}

@Bean(name="SOAPprocessImpl")
public IPSoap getService() {
    return new SOAPprocessImpl();
}

@Bean
public Endpoint endpoint() {
    EndpointImpl endpoint = new EndpointImpl(springBus(), getService());
    endpoint.publish("/WS_1.0");
    endpoint.setWsdlLocation("process.wsdl");
    return endpoint;
}

现在我有了bean SOAPprocessImpl实现，我需要在其中获取应用程序上下文，以便能够处理验证器bean。我已经在configuraton文件中将SOAPprocessImpl声明为bean。代码如下

@javax.jws.WebService (endpointInterface="com.test.IPSoap")
public class SOAPprocessImpl implements IPSoap, ApplicationContextAware {

private static ApplicationContext context;

public static ApplicationContext getApplicationContext() {
    return context;
}

@Override
public void setApplicationContext(ApplicationContext ac)
        throws BeansException {
    context = ac;
}

private static final Logger logger = Logger.getLogger(SOAPprocessImpl.class.getName());

private IValidator validator = (IValidator) context.getBean("IValidator"); // context is NULL here

public IRResponse GetBalance(TSSearchParams SearchParams) {

    // Some processing logic
    }

}

Answer 1

选项（1）：要解决该问题，您需要使用@configuration将您的SOAPProcessIMPLbean注册到Spring容器，如下所示，以便可以注入ApplicationContext对象：

@Configuration
@javax.jws.WebService (endpointInterface="com.test.IPSoap")
public class SOAPprocessImpl implements IPSoap, ApplicationContextAware {

   private static ApplicationContext context;

   private IValidator validator;

   public static ApplicationContext getApplicationContext() {
     return context;
   }

   @Override
   public void setApplicationContext(ApplicationContext ac)
      throws BeansException {
      SOAPprocessImpl.context = ac;
   }


   @PostConstruct//use PostConstruct
   public void init() {
     validator = (IValidator) context.getBean("IValidator");
   }


   //add your current code
}

重要的一点是，在容器准备好bean之前，您不能使用context对象，因此您需要使用上面所示的@postconstruct方法来初始化变量。

选项2（推荐）：最好的方法是使用@autowired将ivalidator对象注入到SOAPProcessIMPL中，如下所示，这样您就不需要SOAPProcessIMPLbean知道ApplicationContextAWare。Spring容器将注入为IValidator类提供的实现的实例（前提是它在@ComponentScan的包下）。

@Component
@javax.jws.WebService (endpointInterface="com.test.IPSoap")
public class SOAPprocessImpl implements IPSoap {

     private static final Logger logger = Logger.getLogger(SOAPprocessImpl.class.getName());


     @Autowired //spring directly injects this object
     private IValidator validator;

     public IRResponse GetBalance(TSSearchParams SearchParams) {
        // Some processing logic
    }
}