Question

我试图在我的代码中使用ApplicationContextAware并提供以下帮助： https://jerlinworld.wordpress.com/2009/07/20/making-your-spring-application-context-aware/

但正在返回异常：

org.springframework.beans.factory.NoSuchBeanDefinitionException：未定义[com.example.test.service.RoleService]类型的限定bean

的web.xml：

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/business-config.xml, classpath:spring/web-config.xml</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

业务-config.xml中：

<bean id="applicationContextProvider" class="com.example.test.extension.spring.ServiceLocator" />

<beans profile="allcomponents">
    <context:component-scan base-package="com.example.test" />
</beans>

我的WebBean（例外）：

try {
        ServiceLocator.getBean(RoleService.class).save(role);
    } catch (Exception e) {
        e.printStackTrace();
    }

ServiceLocator.java：

public class ServiceLocator implements ApplicationContextAware {
    private static ApplicationContext ctx = null;

    public static <T> T getBean(Class<T> clazz) {
        return ctx.getBean(clazz);
    }

    public static <T> T getBean(String beanName, Class<T> clazz) {
        return ctx.getBean(beanName, clazz);
    }

    @SuppressWarnings("static-access")
    public void setApplicationContext(ApplicationContext ctx) throws BeansException {
        // Assign the ApplicationContext into a static method
        this.ctx = ctx;
    }

    public static String getProperty(String key) {
        return ctx.getEnvironment().getProperty(key);
    }
}

RoleService：

public interface RoleService {

    Role save(Role role);
}

RoleServiceImpl：

@Service
public class RoleServiceImpl implements RoleService {

    @Autowired
    private RoleRepository roleRepository;

    @Override
    @Transactional
    public Role save(Role role) {
        return this.roleRepository.save(role);
    }
}

编辑：

完整堆栈跟踪：

org.springframework.beans.factory.NoSuchBeanDefinitionException：未定义[com.examle.test.service.RoleService]类型的限定bean at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean（DefaultListableBeanFactory.java:371）在org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean（DefaultListableBeanFactory.java:331）在org.springframework.context.support.AbstractApplicationContext.getBean（AbstractApplicationContext.java:968）在com.example.test.extension.spring.ServiceLocator.getBean（ServiceLocator.java:11）在com.example.test.web.IndexWebBean.getTest（IndexWebBean.java:30） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:497）在javax.el.BeanELResolver.getValue（BeanELResolver.java:97） at com.sun.faces.el.DemuxCompositeELResolver._getValue（DemuxCompositeELResolver.java:176） at com.sun.faces.el.DemuxCompositeELResolver.getValue（DemuxCompositeELResolver.java:203）在org.apache.el.parser.AstValue.getValue（AstValue.java:169） at org.apache.el.ValueExpressionImpl.getValue（ValueExpressionImpl.java:184） at com.sun.faces.facelets.el.ELText $ ELTextVariable.writeText（ELText.java:238） at com.sun.faces.facelets.compiler.TextInstruction.write（TextInstruction.java:85） at com.sun.faces.facelets.compiler.UIInstructions.encodeBegin（UIInstructions.java:82）在com.sun.faces.facelets.compiler.UILeaf.encodeAll（UILeaf.java:183）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1859）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1859）在com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView（FaceletViewHandlingStrategy.java:456） at com.sun.faces.application.view.MultiViewHandler.renderView（MultiViewHandler.java:133） at com.sun.faces.lifecycle.RenderResponsePhase.execute（RenderResponsePhase.java:120）在com.sun.faces.lifecycle.Phase.doPhase（Phase.java:101）在com.sun.faces.lifecycle.LifecycleImpl.render（LifecycleImpl.java:219）在javax.faces.webapp.FacesServlet.service（FacesServlet.java:647）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:291）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:206）在org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:239）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:206）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:219）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:106）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:502）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:142） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:79）在org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:617）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:88）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:518）在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1091） at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:668）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1527）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.run（NioEndpoint.java:1484）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1142） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:617） at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:745）

在我的business-config.xml中：

<beans profile="allcomponents">
    <context:component-scan base-package="com.make3.mymed" />
</beans>

Answer 1

我发现了问题！

我在尝试：

<beans profile="allcomponents">
    <context:component-scan base-package="com.make3.mymed" />
</beans>

但是当我搬到：

<context:component-scan base-package="com.make3.mymed" />

工作！

为什么呢？我不能用这个吗？

<context:component-scan base-package="com.make3.mymed" />

ApplicationContextAware与NoSuchBeanDefinitionException

1 个答案: