JavaSpring项目应用上下文。xml将一个bean注入另一个bean

Question

我尝试从模块2上的另一个控制器类引用模块1上的服务类

服务等级（模块1）：

public class MyServiceImpl extends CoreBaseService implements MyService {
    @Autowired
    private ConfigService configService;
    @Override
    public String myProcess(String text) {
        // process
        // use configService in this method
    }
}

应用程序上下文。xml（模块2）：

<bean id="myervice"
    class="com.my.project.coreservice.service.MyServiceImpl"
    parent="coreBaseService">
    <property name="configService" ref="configService" />
</bean>
<bean id="configService"
        class="com.my.project.coreservice.service.ConfigServiceImpl"
        parent="coreBaseService" />

控制器（模块2）：

@Controller
public class MyController extends AbstractRestController {
    @Autowired
    private MyService myService;

运行服务器时，出现以下错误：

javax.servlet.ServletException: Servlet.init() for servlet console threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    org.eclipse.virgo.web.tomcat.support.ApplicationNameTrackingValve.invoke(ApplicationNameTrackingValve.java:33)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1600)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    java.lang.Thread.run(Thread.java:748)

root cause

java.lang.IllegalStateException: BundleContext is no longer valid
    org.eclipse.osgi.framework.internal.core.BundleContextImpl.checkValid(BundleContextImpl.java:931)
    org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService(BundleContextImpl.java:584)
    org.springframework.osgi.service.importer.support.internal.support.ServiceWrapper.getService(ServiceWrapper.java:99)
    org.springframework.osgi.service.importer.support.internal.aop.ServiceDynamicInterceptor$ServiceLookUpCallback.doWithRetry(ServiceDynamicInterceptor.java:107)
    org.springframework.osgi.service.importer.support.internal.support.RetryTemplate.execute(RetryTemplate.java:83)
    org.springframework.osgi.service.importer.support.internal.aop.ServiceDynamicInterceptor.lookupService(ServiceDynamicInterceptor.java:430)
    org.springframework.osgi.service.importer.support.internal.aop.ServiceDynamicInterceptor.getTarget(ServiceDynamicInterceptor.java:415)
    org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
    org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
    org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.Cglib2AopProxy$FixedChainStaticTargetInterceptor.intercept(Cglib2AopProxy.java:572)
    $java.util.Properties$$EnhancerByCGLIB$$53586309.propertyNames(<generated>)
    org.springframework.util.CollectionUtils.mergePropertiesIntoMap(CollectionUtils.java:100)
    org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:155)
    org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:69)
    org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:663)
    org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:638)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:407)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:467)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:483)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:358)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:325)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127)
    javax.servlet.GenericServlet.init(GenericServlet.java:244)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    org.eclipse.virgo.web.tomcat.support.ApplicationNameTrackingValve.invoke(ApplicationNameTrackingValve.java:33)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1600)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    java.lang.Thread.run(Thread.java:748)

我删除了<property name="configService" ref="configService" />行

这次服务器运行时没有出现错误，但当我调用myProcess（模块1中的服务类）时，出现了NullPointerException，因为MyserviceImpl。configService为空

如何将依赖项bean（在我的例子中是configService）注入bean（在我的例子中是MyServiceImpl）

Answer 1

你能纠正一下id="myervice"中的打字错误吗？这可能是问题的症结所在。 它应该是id="myService"