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社区首页 >问答首页 >泽西、osgi和Servlet上下文3.x

问泽西、osgi和Servlet上下文3.x
EN

Stack Overflow用户
提问于 2013-11-03 22:32:20
回答 2查看 2.9K关注 0票数 1

我正在使用Jersey2.x和OSGI开发一个应用程序。为了注册jersey (ServletContainer)的端点，我使用osgi的HTTPService和Jetty8.x的实现--我想使用SSE (Server事件)，但不幸的是，当我使用实现它的服务时，告诉我，它不运行在Servlet上下文2.x中，奇怪的是，我使用的堆栈是servlet 3.x。如果我制作了一个带有SSE支持的简单servlet，那么不管JAX是什么，都会很好。我认为泽西岛开始考虑在servlet容器2.x上运行，但不考虑如何改变这种情况。我没有任何web.xml，因为它是一个本地应用程序OSGI。

这是使用OSGI进行的简单初始化：

代码语言：javascript
复制
httpService.registerServlet ("/ kratos / rest" (HttpServlet) ServletContext, null, null);

其中servletContext是ServletContainer的一个实例。

然后是ServletContainer实例，我们添加JAX服务，动态地重新加载应用程序。

有什么建议吗？

谢谢..。

编辑..。

以下是其中的一些包：

代码语言：javascript
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karaf@root> la  | grep Se
[   3] [Active     ] [            ] [    8] OPS4J Pax Logging - Service (1.7.1)
[   5] [Active     ] [            ] [   10] Apache Felix Configuration Admin Service (1.6.0)
[  10] [Active     ] [            ] [   20] Apache Aries Proxy Service (1.0.1)
[  49] [Active     ] [Created     ] [   30] Apache Karaf :: Management :: MBeans :: Services (2.3.3)
[  54] [Active     ] [            ] [   30] Apache ServiceMix :: Specs :: Activation API 1.4 (1.9.0)
[  55] [Active     ] [            ] [   30] Servlet 3.0 (1.0)
[  60] [Active     ] [            ] [   30] Jetty :: Aggregate :: All Server (8.1.9.v20130131)
[  67] [Active     ] [            ] [   30] Apache ServiceMix :: Bundles :: asm (3.3.0.2)
[  69] [Active     ] [            ] [   30] OPS4J Pax Web - Service SPI (3.0.2)
[ 105] [Active     ] [            ] [   80] Apache ServiceMix :: Bundles :: javax.inject (1.0.0.1)
[ 112] [Active     ] [            ] [   80] ServiceLocator Default Implementation (2.2.0.b10)
[ 121] [Active     ] [            ] [   80] Apache ServiceMix :: Bundles :: aopalliance (1.0.0.5)

这是一个例外：

代码语言：javascript
复制
013-11-03 20:50:27,708 | WARN  | qtp18651544-59   | ServletHandler                   | pse.jetty.servlet.ServletHandler  492 | 60 - org.eclipse.jetty.aggregate.jetty-all-server - 8.1.9.v20130131 | 
javax.servlet.ServletException: java.lang.UnsupportedOperationException: Asynchronous processing not supported on Servlet 2.x container.                                                                                         
Caused by: java.lang.UnsupportedOperationException: Asynchronous processing not supported on Servlet 2.x container.                                                                                                              
        at org.glassfish.jersey.internal.Errors.process(Errors.java:267)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:235)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:983)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:359)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        ... 29 more
2013-11-03 20:50:27,710 | WARN  | qtp18651544-59   | ServletHandler                   | pse.jetty.servlet.ServletHandler  517 | 60 - org.eclipse.jetty.aggregate.jetty-all-server - 8.1.9.v20130131 | /kratos/rest/sse
java.lang.UnsupportedOperationException: Asynchronous processing not supported on Servlet 2.x container.
        at org.glassfish.jersey.servlet.WebComponent$1.suspend(WebComponent.java:120)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        at org.glassfish.jersey.servlet.internal.ResponseWriter.suspend(ResponseWriter.java:109)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:621)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:357)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:347)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:258)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.internal.Errors.process(Errors.java:315)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.internal.Errors.process(Errors.java:297)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.internal.Errors.process(Errors.java:267)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)[149:org.glassfish.jersey.core.jersey-common:2.3.1]
        at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:235)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:983)[150:org.glassfish.jersey.core.jersey-server:2.3.1]
        at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:359)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)[147:org.glassfish.jersey.containers.jersey-container-servlet-core:2.3.1]
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:69)[71:org.ops4j.pax.web.pax-web-jetty:3.0.2]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:210)[71:org.ops4j.pax.web.pax-web-jetty:3.0.2]
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:77)[71:org.ops4j.pax.web.pax-web-jetty:3.0.2]
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.Server.handle(Server.java:368)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:488)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:932)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:994)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)[60:org.eclipse.jetty.aggregate.jetty-all-server:8.1.9.v20130131]
        at java.lang.Thread.run(Thread.java:724)[:1.7.0_40]

示例：

注意:我使用Peaberry作为DI。

Activator.java

代码语言：javascript
复制
public class Activator implements BundleActivator {

   ....
   ....

   @Override
   public void start(final BundleContext bc) throws Exception {

        System.out.println("Starting Activator");

        final ClassLoader primaryClassLoader = getDatanucleusClassLoader(bc);

        Injector injector = Guice.createInjector(Peaberry.osgiModule(bc), new AbstractModule() {
            @Override
            protected void configure() {

                install(new CoreResourcesJaxRsModule());
                ...
                ...
                 bind(HttpService.class).toProvider(Peaberry.service(HttpService.class).single());

                ...
             }
        });
   }
}

ConfigHttpService.java：

单例公共类ConfigHttpService {

代码语言：javascript
复制
private final ServletContainer servletContext;
private final HttpService httpService;
private final BundleContext context;
private boolean initialized = false;

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

@Inject
public ConfigHttpService(
        BundleContext bc,
        HttpService httpService, 
        ServletContainer context) {
    this.servletContext = context;
    this.httpService = httpService;
    this.context = bc;
}

public synchronized void init() throws Exception {
    if (!initialized) {
        try {
            logger.info("Configurado el registro de Guice");
            //httpService.registerFilter( guiceFilter, "/.*", null, 0, null );
            try {

                logger.info("Configurado el registro de recursos estaticos");
                httpService.registerResources("/kratos/pages", "/pages", null);

                 logger.info("Servlet /kratos/events configurado");
                 Dictionary d1 = new Hashtable();
                 d1.put("javax.ws.rs.Application", "com.workingflows.kratos.core.service.KratosServiceApplication");

                 httpService.registerServlet("/kratos/rest", (HttpServlet) servletContext, d1, null);




                //httpService.registerResources("/kratos", "/js", null);
            } catch (NamespaceException ex) {
                logger.info("Error NamespaceException");
            }
        } catch (ServletException ex) {
            logger.info("Error ServletException");
        }
        initialized = true;
    }

}

@Stop
public void stop() {
    logger.log(Level.INFO, "Eliminando el servlet {0}", "/kratos/rest");
    httpService.unregister("/kratos/rest");
    httpService.unregisterFilter(guiceFilter);
}

}

方法ConfigHttpService.init()是从表示内部模块的其他类调用的。在这种方法中，您将看到JAX ServletContext的混淆。

servlets
jersey
osgi
java
EN

回答 2

Stack Overflow用户

回答已采纳

发布于 2013-11-06 17:35:38

错误是泽西模块与注册ServletContainer类的应用程序模块在同一级别上启动。

代码语言：javascript
复制
[ 127] [  Resolved] [   30] jersey-container-servlet-core (2.4.0)
[ 161] [    Active] [   30] jersey-core-common (2.4.0)
[ 162] [    Active] [   30] jersey-core-client (2.4.0)
[ 163] [    Active] [   30] jersey-core-server (2.4.0)
[ 164] [    Active] [   30] jersey-container-servlet (2.4.0)
[ 165] [    Active] [   30] jersey-media-sse (2.4.0)

我在30级启动了一堆球衣，80级的应用程序和所有东西都能工作！重要的模块是泽西核心服务器，这增加了对servlet 3.x的支持。

代码语言：javascript
复制
[ 168] [    Active] [   80] OsgiJersey OSGi Bundle (1.0.0.SNAPSHOT)

参见我的存储库中的示例

票数 2
EN

Stack Overflow用户

发布于 2013-11-04 17:31:11

我认为我们可能有更好的解决方案，而不是直接使用HttpService，您可以使用WhiteBoard扩展程序(只需要为此安装http-白板功能)。通过这种方式，您可以将Servlet注册为服务，而白板扩展程序将获得这个结果，请参见pax-web样本之一。或者，在开发Servlet3.0servlet时，只需对Servlet进行注释就可以注册它。您所需要做的就是将添加到Bundle的报表中。也见我的博客关于这个。

如果这仍然没有帮助，我可能需要一个工作样本发送到ops4j邮件列表，或者添加一个问题到pax，这样我就可以更深入地研究它。顺便说一下。CXF确实使用了白板方法，并且工作起来很有魅力;)

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/19759006

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