11

我首先要指出的是，总的来说，这是我职业生涯中处理过的最大的时间浪费问题。（现在连续两天基本上是 0 进度。）我尝试的每一个“解决方法”或“解决方案”都没有奏效，所以我被阻止并且非常渴望得到一些帮助。

简而言之，问题是 Jersey/HK2 似乎总是在 Spring 实例化我的 Spring 管理的 bean 之后实例化它们，这告诉我jersey-spring3没有完成它的工作，或者至少在我当前的设置中没有（或迄今为止我尝试过的约 50 种设置排列中的任何一种。）

请注意，当我使用空构造函数时，这些资源字段在运行时为空。

我不明白为什么我当前的设置不起作用，因为我实际上是在复制这个在线示例

任何帮助都非常感谢！

配置

- - - - - pom.xml - - - - -

<!-- ... -->

<dependencies>

    <!-- Spring Dependencies -->

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-instrument</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-instrument-tomcat</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>${spring.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-core</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-ldap</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-parent</artifactId>
        <version>${spring.version}</version>
        <classifier>tests</classifier>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-config</artifactId>
        <version>${spring.version}</version>
        <classifier>tests</classifier>
    </dependency>

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-acl</artifactId>
        <version>${spring.version}</version>
        <exclusions>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-support</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-dao</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
        <scope>test</scope>
    </dependency>

    <!-- / Spring Dependencies -->

    <!-- API dependencies -->

    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-client</artifactId>
        <version>${jersey.version}</version>
    </dependency>

    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet</artifactId>
        <version>${jersey.version}</version>
    </dependency>

    <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-json-processing</artifactId>
        <version>${jersey.version}</version>
    </dependency>

    <dependency>
        <groupId>org.glassfish.jersey.test-framework.providers</groupId>
        <artifactId>jersey-test-framework-provider-grizzly2</artifactId>
        <version>2.4</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.glassfish.jersey.ext</groupId>
        <artifactId>jersey-spring3</artifactId>
        <version>${jersey.version}</version>
    </dependency>

    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>${gson.version}</version>
    </dependency>

    <!-- / API dependencies -->

    <!-- ... -->

</dependencies>

<!-- ... -->

<properties>

    <!-- ... -->

    <spring.version>3.0.5.RELEASE</spring.version>

    <jersey.version>2.4.1</jersey.version>

    <gson.version>2.2.4</gson.version>

    <!-- ... -->

</properties>

<!-- ... -->

- - - - - web.xml - - - - -

<web-app>

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

    <!-- ... -->

    <servlet>
        <servlet-name>Jersey REST Service</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>fubar.rest.FubarJerseyApplication</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Jersey REST Service</servlet-name>
        <url-pattern>/api/*</url-pattern>
    </servlet-mapping>

    <!-- ... -->

</web-app>

- - - - - beans.xml (上下文配置) - - - - -

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

<!-- ... -->

<!-- beans-outbound-api has configuration for spring-jersey3 to work properly -->
<import resource="beans-api.xml" />

</beans>

- - - - - beans-api.xml - - - - -

<?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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- Services -->

    <bean id="locationServiceV1" class="fubar.rest.v1.services.location.impl.LocationServiceV1" />
    <bean id="locationServiceV2" class="fubar.rest.v2.services.location.impl.LocationServiceV2" />

    <bean id="viewServiceV1" class="fubar.rest.v1.services.view.impl.ViewServiceV1" />
    <bean id="viewServiceV2" class="fubar.rest.v2.services.view.impl.ViewServiceV2" />

    <!-- Resources -->

    <bean class="fubar.rest.resources.location.impl.LocationResource">
        <constructor-arg index="0" ref="locationServiceV1" />
        <constructor-arg index="1" ref="locationServiceV2" />
    </bean>

    <bean class="fubar.rest.resources.view.impl.ViewResource">
        <constructor-arg index="0" ref="viewServiceV1" />
        <constructor-arg index="1" ref="viewServiceV2" />
    </bean>

</beans>

代码

- - - - - 资源 (JAX-RS) - - - - -

@Path(RESTLocationResourceV1.PathFields.PATH_ROOT)
@Produces({V1_JSON, APPLICATION_JSON})
public class LocationResource
    extends ResourceBase<LocationResource, ILocationServiceV1, ILocationServiceV2> {

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

  @Inject
  public LocationResource(final LocationServiceV1 v1Loc, final LocationServiceV2 v2Loc) {
    super(v1Loc, v2Loc);
    logger.info(format(Messages.INF_INSTANTIATED, "LocationResource"));
  }

  @GET
  @Path(PathFields.SUBPATH_LIST)
  public LocationListV1 listV1(@HeaderParam(HEADER_API_KEY) String apiKey)
      throws ApplicationException {
    // Implementation
  }

  @GET
  @Path(PathFields.SUBPATH_SEARCH)
  public LocationListV1 searchV1(@HeaderParam(HEADER_API_KEY) String apiKey,
      @QueryParam(QueryFields.QUERY) String likeText) throws ApplicationException {
    // Implementation
  }
}

- - - - - 服务（Spring Bean） - - - - -

public class LocationServiceV1 extends ServiceBaseV1<LocationBean, LocationV1, LocationListV1>
    implements
      ILocationServiceV1 {

  @Autowired
  private LocationDao daoLoc;

  public LocationServiceV1() {
    super(new LocationBeanToJsonTranslatorV1());
  }

  @Override
  public LocationListV1 listV1() throws ApplicationException {
    // Implementation
  }

  @Override
  public LocationListV1 searchV1(String likeText) throws ApplicationException {
    // Implementation
  }
}

（与第 2 版基本相同）

- - - - - 申请（球衣） - - - - -

public class FubarJerseyApplication extends ResourceConfig {

  private static final class Messages {
    static final String INF_STARTING_APPLICATION = "Starting %s!";
  }

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

  public FubarJerseyApplication() {
    packages("fubar.rest");
    logger.info(format(Messages.INF_STARTING_APPLICATION, this.getClass().getName()));
  }
}

调用（客户端）

curl http://my-ip-address/fubar/api/location/list

（500内部服务器错误）

错误（服务器）

org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object
available for injection at Injectee(requiredType=LocationServiceV1,parent=
LocationResource,qualifiers={}),position=0,optional=false,self=false,
unqualified=null,344016971)
at org.jvnet.hk2.internal.ThreeThirtyResolver.resolve(ThreeThirtyResolver.java:74)
at org.jvnet.hk2.internal.ClazzCreator.resolve(ClazzCreator.java:208)
at org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:225)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:329)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:456)
at org.glassfish.jersey.process.internal.RequestScope.findOrCreate(RequestScope.java:158)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2350)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:612)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:597)
at org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:173)
at org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
at org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:103)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:128)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:110)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:65)
at org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:250)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:983)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:361)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at fubar.server.springframework.SessionFilter.doFilter(SessionFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at fubar.server.springframework.loader.ContextLoaderHttpInterceptor$LoaderState.filter(ContextLoaderHttpInterceptor.java:75)
at fubar.server.springframework.loader.ContextLoaderHttpInterceptor$StartedState.filter(ContextLoaderHttpInterceptor.java:120)
at fubar.server.springframework.loader.ContextLoaderHttpInterceptor.doFilter(ContextLoaderHttpInterceptor.java:62)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:311)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:662)

API 日志

Dec 10, 2013 13:36:28 INFO  [main] fubar.rest.FubarJerseyApplication
     - Starting fubar.rest.FubarJerseyApplication!
Dec 10, 2013 13:38:06 INFO  [pool-1-thread-1] resources.location.impl.LocationResource
     - LocationResource has been instantiated
Dec 10, 2013 13:38:06 INFO  [pool-1-thread-1] resources.view.impl.ViewResource
     - ViewResource has been instantiated

更新——发现这个：

卡特琳娜原木

Dec 10, 2013 1:36:42 PM org.glassfish.jersey.server.ApplicationHandler initialize
INFO: Initiating Jersey application, version Jersey: 2.4.1 2013-11-08 12:08:47...
Dec 10, 2013 1:36:43 PM org.glassfish.jersey.server.spring.SpringComponentProvider initialize
SEVERE: Spring context lookup failed, skipping spring component provider initialization.
Dec 10, 2013 1:38:00 PM com.sun.xml.bind.v2.runtime.reflect.opt.Injector inject

...所以在SpringComponentProvider#initialize中找不到 ApplicationContext 。

4

3 回答 3

10

首先加载什么？春天还是泽西岛？可能是您的 Spring 上下文在 SpringComponentProvider 调用时未初始化WebApplicationContextUtils.getWebApplicationContext(sc);。尝试使用 Spring 的 ContextLoaderListener，以便 Spring 在应用程序部署后立即进行初始化。

我遇到了很多与 jersey-spring3 库相同的问题。它在找到我的 Spring ApplicationContext 时遇到了问题（看起来这就是你被卡住的地方），并且它炸毁了将泛型参数作为参数的注入设置器。

如果您解决了应用程序上下文问题，我认为您所拥有的无论如何都不会起作用。您在 XML 中定义了 ViewResource 和 LocationResource bean。据我所知，如果资源类使用@Component 注释，Jersey 只会从 Spring 获取资源实例。看看 org.glassfish.jersey.server.spring.SpringComponentProvider，具体来说component.isAnnotationPresent(Component.class)：

// detect JAX-RS classes that are also Spring @Components.
// register these with HK2 ServiceLocator to manage their lifecycle using Spring.
@Override
public boolean bind(Class<?> component, Set<Class<?>> providerContracts) {

    if (ctx == null) {
        return false;
    }

    if(component.isAnnotationPresent(Component.class)) {
        DynamicConfiguration c = Injections.getConfiguration(locator);
        String[] beanNames = ctx.getBeanNamesForType(component);
        if(beanNames == null || beanNames.length != 1) {
            LOGGER.severe(LocalizationMessages.NONE_OR_MULTIPLE_BEANS_AVAILABLE(component));
            return false;
        }
        String beanName = beanNames[0];

        ServiceBindingBuilder bb = Injections.newFactoryBinder(new SpringComponentProvider.SpringManagedBeanFactory(ctx, locator, beanName));
        bb.to(component);
        Injections.addBinding(bb, c);
        c.commit();

        LOGGER.config(LocalizationMessages.BEAN_REGISTERED(beanName));
        return true;
    }
    return false;
}

一个不相关的问题是，我们还希望将所有 JAX-RS 注释移至接口。每当我尝试它时，我都会得到“找不到适合 com.foo.ResourceInterface 的构造函数”。

最后，我通过不使用 jersey-spring3 并滚动我自己的 Jersey 到 Spring 连接器解决了我的所有问题。这是我所做的：

  1. 将我的所有资源配置为常规 Spring bean。如果需要，您可以使用 XML。
  2. 在我的应用程序中，我添加了对 HK2 容器的绑定，以便在需要其中一种资源的实例时使用工厂。我的工厂类只返回资源的 Spring 托管实例。
  3. 在工厂返回 Spring 管理的 bean 之前，我使用 Jersey/HK2 ServiceLocator 来注入 Jersey 提供的东西。例如，使用@Context 注释的任何内容。

我的 javax.ws.rs.Application 看起来像这样：

public class RestConfig extends ResourceConfig {
private static final Log log = LogFactory.getLog(RestConfig.class);


@Inject
public RestConfig(ServiceLocator locator) {
    super();
    // specific to my app. get your spring beans however you like
    Collection<Object> beans = BeanLocator.beansByAnnotation(RestResource.class);

    DynamicConfiguration c = Injections.getConfiguration(locator);


    for (Object bean : beans)
    {
                    // tell jersey to use a factory for any interface that the bean implements.  since your resources don't implement interfaces, 
                    // you'll want to do something a bit different here.
        for (Class<?> currentInterface : bean.getClass().getInterfaces())
        {
            if (log.isTraceEnabled())
                log.trace("binding " + currentInterface.getSimpleName() + " to Spring managed bean");

            ServiceBindingBuilder<Object> bb = Injections.newFactoryBinder(new StaticLookupFactory(locator, bean));
            bb.to(currentInterface);
                    Injections.addBinding(bb, c);
        }
    }

            // commit the changes to the HK2 container (don't skip this step!)
            c.commit();

    property("jersey.config.disableMoxyJson.server", true);
    packages("com.foo.web.rest");

    register(MoxyXmlFeature.class);
}


// a "factory" where the provide() method returns the spring managed bean
    // that was passed to the constructor.
private static class StaticLookupFactory implements Factory<Object> {

    private ServiceLocator locator;
    private Object bean;

    StaticLookupFactory(ServiceLocator locator, Object bean)
    {
        this.locator = locator;
        this.bean = bean;
    }

    @Override
    public Object provide() {
                    // inject this annotated with @Context, @Inject, etc
        locator.inject(bean);
        return bean;
    }

    @Override
    public void dispose(Object instance) {
    }

}
}

BeanLocator是我编写的一个实用程序类，它可以在自动装配不可用时使用静态方法轻松获取 bean 实例。例如，在 Spring 托管 bean 之外工作时。那里没有太多事情要做：

public static Collection<Object> beansByAnnotation(Class<? extends Annotation> annotation)
{
    return applicationContext.getBeansWithAnnotation(annotation).values();
}

RestResource也特定于我们的应用程序。这是一个自定义构造型，类似于@Component、@Service 等：

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Component
public @interface RestResource {
    String value() default "";
}

请注意，Jersey 允许您注册 org.glassfish.jersey.server.spring.ComponentProvider 的自定义实现，以自行管理资源的生命周期。我尝试了它，但无论我做什么，它都无法识别我的实现。

另一个注意事项...locator.inject(bean)激活 Jersey 依赖注入机制的调用将处理任何标有 @Inject 的内容。在您的类中使用@Autowired 或使用XML 配置您的bean，以避免Spring 和Jersey 都尝试解析带有@Inject 注释的事物的值。

于 2013-12-14T01:01:02.197 回答
3

我们有一个自定义的异步ContextLoader ，因此临时解决方案需要在Jersey-Spring3源中放置一个完整的 hack，以在自定义组件提供程序初始化之前等待应用程序初始化。

PS 对于任何发现自己不得不做这样的事情的可怜人，请确保 META-INF/settings 包含SpringComponentProvider配置。

(2014-04-18) 为@Scott 详细说明

请注意，这是一个可怕的黑客攻击，当所有其他尝试都失败时，我只会尝试这种事情作为最后的手段，就像我的情况一样。此外，在尝试这样的事情之前，我会向 Jersey 邮件组咨询您的问题。

也就是说......这就是我为解决我的问题所做的事情：

  • 从字面上将 spring-jersey3 的源代码复制到我的应用程序/服务器中，根据许可证使用适当的标签修改每个文件的标题；

  • 创建了以下类-

===>

  /**
   * Hack class for RN-8979.
   *
   * @author ryan
   *
   */
  public class ContextLoadWaiter {

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

    public void doWait() {

      try {
        while (ContextLoaderHttpInterceptor.isNotStarted()) {
          logger.info("Waiting for ContextLoader to start...");
          Thread.sleep(1000);
        }
      } catch (InterruptedException e) {
        logger.error("SpringComponentProvider was interrupted!");
      }
    }
  }

请注意，这是特定于 *our* 代码库的，因为如果我们的自定义（碰巧是异步的）尚未加载，则返回ContextLoaderHttpInterceptor该 http servlet 。isNotStartedtrueContextLoader

出于某种原因，自定义异步ContextLoader是有人在某个时候按照允许 UI 在服务器启动时显示“加载”页面的方式放置的。（可能不是添加此 UI“功能”的正确方法，但代码在那里并且 UI 依赖于它，所以我不得不处理它......）

由于这部分不会直接适用于您，因此关键是通过SpringComponentProvider（从这里）调试并查看ClassPathXmlApplicationContext. 如果是null，就像我们的情况一样，那么您需要弄清楚为什么会这样，null并在初始化此组件之前等待ContextLoader您用来加载的任何内容。

  • 把这条老生常谈的线放在SpringComponentProvider——

==>

  ...

  private final ContextLoadWaiter waiter = new ContextLoadWaiter();

  ...

  @Override
  public void initialize(ServiceLocator locator) {

    waiter.doWait(); // Wait on our asynchronous context loader.

    this.locator = locator;

    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Context lookup started");
    }

    ...

  • 创建此文件：META-INF/services/org.glassfish.jersey.server.spi.ComponentProvider内容是 SpringComponentProvider 的完全限定类路径，例如com.company.server.nbi.rest.internal.jspring.SpringComponentProvider

  • 在应用程序中添加了自定义 Jersey-spring3 包作为要扫描的包；见下文...

==>

/**
 * Application configuration.
 *
 * @author ryan
 *
 */
public class MyJerseyApplication extends ResourceConfig {

  private static final class Messages {
    static final String INF_STARTING_APPLICATION = "Starting %s!";
  }

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

  public MyJerseyApplication() {

    packages(
    /* Internal providers */
    "com.company.server.nbi.rest.providers",
    /* Internal filters */
    "com.company.server.nbi.rest.filters",
    /* Spring injection support */
    "com.company.server.nbi.rest.internal.jspring", // HERE!!!
    /* Json providers */
    "com.fasterxml.jackson.jaxrs.json",
    /* Jackson exception mappers */
    "com.fasterxml.jackson.jaxrs.base");

    /* Resources */
    register(ResourceA.class);
    register(ResourceB.class);
    register(ResourceC.class);

    /* Miscellaneous features */
    register(MultiPartFeature.class);
    register(LoggingFilter.class);

    logger.info(format(Messages.INF_STARTING_APPLICATION, this.getClass().getName()));
  }
}

而已”。绝对不是一个值得骄傲的解决方案，但如果你像我一样处于绝望模式，试一试可能没有什么坏处。

于 2013-12-11T01:18:03.457 回答
1

这是理解问题的关键信息。它表明 Spring 未能正确初始化：

SEVERE: Spring context lookup failed, skipping spring component provider initialization.

（附带说明：由于 Spring 无法初始化，唯一尝试解决的 JSR-330 实现@Inject是 HK2 - 这就是您看到另一个问题的原因）。

无论如何，问题很可能是您的容器没有对使所有jersey-spring3魔术发生的注释执行扫描。

此行为是 Servlet 3.0 规范（JSR-33，第 1.6.2 节）的一部分，因此您应该仔细检查您的容器是否支持此行为。

对于 Tomcat - 除非您运行的是 Tomcat 7.0.29 或更高版本，否则您实际上需要确保在 web.xml 中指定了 Servlet 版本。

http://tomcat.apache.org/tomcat-7.0-doc/changelog.html#Tomcat_7.0.29_(markt)

我最近遇到了这个问题，它让我发疯了，修复 web.xml 比从 Ubuntu/Precise 升级更容易！

希望这可以帮助！

于 2014-05-16T13:22:15.460 回答