servlets - Servlet 在启动时未加载

Question

我正在尝试通过 SIP-servlet 初始化一些类。为此，我将 sip.xml 用于我的 mss-2.0.0.FINAL-jboss-as-7.1.2 服务器。

sip.xml：

<?xml version="1.0" encoding="UTF-8"?>  
    <sip-app xmlns="http://www.jcp.org/xml/ns/sipservlet" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
      xsi:schemaLocation="http://www.jcp.org/xml/ns/sipservlet" xmlns:javaee="http://java.sun.com/xml/ns/javaee"  
      xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.1">  


      <app-name>service.ngsi.multimediaconference</app-name>  


      <servlet-selection>  
      <servlet-mapping>  
      <servlet-name>multimedia-conference</servlet-name>  
      <pattern>  
      <equal>  
      <var>request.method</var>  
      <value>INVITE</value>  
      </equal>  
      </pattern>  
      </servlet-mapping>  
      </servlet-selection>  


      <servlet>  
      <servlet-name>multimedia-conference</servlet-name>  
      <servlet-class>com.abc.multimediaconference.ServletSipMultimediaConference</servlet-class>  
      <load-on-startup>1</load-on-startup>  
      </servlet>  


      <session-config>  
      <session-timeout>120</session-timeout>  
      </session-config>  
    </sip-app>  

我的日志：

16:11:03,896 INFO  [org.jboss.modules] JBoss Modules version 1.1.2.GA  
16:11:04,903 INFO  [org.jboss.msc] JBoss MSC version 1.0.2.GA  
16:11:04,989 INFO  [org.jboss.as] JBAS015899: JBoss AS 7.1.2.Final "Steropes" starting  
16:11:09,072 INFO  [org.jboss.as.server.deployment.scanner] JBAS01 5003: Found Conference.war in deployment directory. To trigger deployment create a file called Conference.war.dodeploy   
16:11:09,073 INFO  [org.jboss.as.server.deployment.scanner] JBAS015003: Found my-sipapp.war in deployment directory. To trigger deployment create a file called my-sipapp.war.dodeploy  
16:11:09,134 INFO  [org.jboss.as.server] JBAS015888: Creating http management service using socket-binding (management-http)  
16:11:09,157 INFO  [org.xnio] XNIO Version 3.0.3.GA   
16:11:09,198 INFO  [org.xnio.nio] XNIO NIO Implementation Version 3.0.3.GA  
16:11:09,207 INFO  [org.jboss.remoting] JBoss Remoting version 3.2.7.GA  
16:11:09,263 INFO  [org.jboss.as.logging] JBAS011502: Removing bootstrap log handlers  
16:11:09,270 INFO  [org.jboss.as.configadmin] (ServerService Thread Pool -- 27) JBAS016200: Activating ConfigAdmin Subsystem  
16:11:09,283 INFO  [org.jboss.as.naming] (ServerService Thread Pool -- 39) JBAS011800: Activating Naming Subsystem  
16:11:09,294 INFO  [org.jboss.as.osgi] (ServerService Thread Pool -- 40) JBAS011906: Activating OSGi Subsystem  
16:11:09,305 INFO  [org.jboss.as.security] (ServerService Thread Pool -- 45) JBAS013101: Activating Security Subsystem  
16:11:09,361 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 32) JBAS010280: Activating Infinispan subsystem.  
16:11:09,388 INFO  [org.jboss.as.webservices] (ServerService Thread Pool -- 50) JBAS015537: Activating WebServices Extension  
16:11:09,472 INFO  [org.jboss.as.connector.logging] (MSC service thread 1-4) JBAS010408: Starting JCA Subsystem (JBoss IronJacamar 1.0.11.Final)  
16:11:09,615 INFO  [org.jboss.as.security] (MSC service thread 1-5) JBAS013100: Current PicketBox version=4.0.9.Final  
16:11:10,532 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 28) JBAS010403: Deploying JDBC-compliant driver class org.h2.Driver (version 1.3) 16:11:10,567 INFO  [org.jboss.as.naming] (MSC service thread 1-2) JBAS011802: Starting Naming Service  
16:11:10,571 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-4) JBAS015400: Bound mail session [java:jboss/mail/Default]   
16:11:11,137 INFO  [org.apache.coyote.http11.Http11Protocol] (MSC service thread 1-5) Starting Coyote HTTP/1.1 on `http-localhost/127.0.0.1:8080`   
16:11:11,217 INFO  [org.mobicents.servlet.sip.catalina.SipStandardService] (MSC service thread 1-7) Pretty encoding of headers enabled ? true  
16:11:11,218 INFO  [org.mobicents.servlet.sip.catalina.SipStandardService] (MSC service thread 1-7) Sip Stack path name : gov.nist  
16:11:11,397 INFO  [org.mobicents.servlet.sip.catalina.SipStandardService] (MSC service thread 1-7) Mobicents Sip Servlets sip stack properties :   
{gov.nist.javax.sip.DEBUG_LOG=/opt/mss-2.0.0.FINAL-jboss-as-7.1.2.Final/standalone/tmp/logs/mss-jsip-debuglog.txt,   
gov.nist.javax.sip.PASS_INVITE_NON_2XX_ACK_TO_LISTENER=true,   
gov.nist.javax.sip.MAX_LISTENER_RESPONSE_TIME=120,   
gov.nist.javax.sip.LOG4J_LOGGER_NAME=gov.nist,   
javax.sip.AUTOMATIC_DIALOG_SUPPORT=off,   
gov.nist.javax.sip.SERVER_LOG=/opt/mss-2.0.0.FINAL-jboss-as-7.1.2.Final/standalone/tmp/logs/mss-jsip-messages.xml,   
gov.nist.javax.sip.REENTRANT_LISTENER=true,   
gov.nist.javax.sip.MAX_FORK_TIME_SECONDS=0,  
org.mobicents.ha.javax.sip.REPLICATE_APPLICATION_DATA=false,  
gov.nist.javax.sip.RECEIVE_UDP_BUFFER_SIZE=65536,  
javax.sip.STACK_NAME=Mobicents-SIP-Servlets,  
gov.nist.javax.sip.TCP_POST_PARSING_THREAD_POOL_SIZE=30,  
gov.nist.javax.sip.LOOSE_DIALOG_VALIDATION=true,  
org.mobicents.ha.javax.sip.REPLICATION_STRATEGY=ConfirmedDialog,  
gov.nist.javax.sip.AGGRESSIVE_CLEANUP=true,  
gov.nist.javax.sip.TRACE_LEVEL=LOG4J,  
gov.nist.javax.sip.MAX_MESSAGE_SIZE=10000,  
gov.nist.javax.sip.AUTOMATIC_DIALOG_ERROR_HANDLING=false,  
gov.nist.javax.sip.SEND_UDP_BUFFER_SIZE=65536,  
gov.nist.javax.sip.LOG_MESSAGE_CONTENT=true,  
gov.nist.javax.sip.THREAD_POOL_SIZE=64,  
gov.nist.javax.sip.DELIVER_UNSOLICITED_NOTIFY=true,  
javax.sip.ROUTER_PATH=org.mobicents.ext.javax.sip.dns.DNSAwareRouter}  
16:11:11,576 INFO  [gov.nist.javax.sip.stack.SIPTransactionStack] (MSC service thread 1-7) value -1000 will be used for reliableConnectionKeepAliveTimeout stack property   
16:11:11,576 INFO  [gov.nist.javax.sip.stack.SIPTransactionStack] (MSC service thread 1-7) Setting Stack Thread priority to 10   
16:11:11,579 WARN  [gov.nist.javax.sip.SipStackImpl] (MSC service thread 1-7) using default tls security policy  
16:11:11,641 INFO  [gov.nist.javax.sip.stack.timers.DefaultSipTimer] (MSC service thread 1-7) the sip stack timer gov.nist.javax.sip.stack.timers.DefaultSipTimer has been started  
16:11:11,642 INFO  [org.mobicents.servlet.sip.catalina.SipStandardService] (MSC service thread 1-7) no AddressResolver will be used since none has been specified.  
16:11:11,642 INFO  [org.mobicents.servlet.sip.catalina.SipStandardService] (MSC service thread 1-7) SIP stack initialized  
16:11:11,643 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) SIP Base Timer Interval set to 500ms  
16:11:11,643 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) SIP Timer T2 Interval set to 4000ms  
16:11:11,643 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) SIP Timer T4 Interval set to 5000ms  
16:11:11,643 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) SIP Timer D Interval set to 32000ms  
16:11:11,643 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Memory threshold set to 85%  
16:11:11,644 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Back To Normal Memory threshold set to 75%  
16:11:11,644 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Congestion Control policy set to ErrorResponse  
16:11:11,644 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Queue Size set to 1500  
16:11:11,644 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Back To Normal Queue Size set to 1300  
16:11:11,644 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Gathering Statistics set to true  
16:11:11,645 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Container wide Concurrency Control set to SipApplicationSession   
16:11:11,645 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Bypass Request Executor enabled ?true  
16:11:11,645 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Bypass Response Executor enabled ?true  
16:11:11,645 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Using the Service Provider Framework to load the application router provider  
16:11:11,652 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-1) JBAS010400: Bound data source [java:jboss/datasources/ExampleDS]  
16:11:11,654 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl@4da19f89 Using the following Application Router instance: org.mobicents.servlet.sip.router.DefaultApplicationRouter@2df10330  
16:11:11,697 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) Sip Application dispatcher registered under following name jboss.sip:type=SipApplicationDispatcher   
16:11:11,697 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) bypassRequestExecutor ? true   
16:11:11,698 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) bypassResponseExecutor ? true  
16:11:11,707 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) AsynchronousThreadPoolExecutor size is 15  
16:11:11,709 INFO  [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (MSC service thread 1-7) No Congestion control background task started since the checking interval is equals to -1 milliseconds.  
16:11:11,710 INFO  [org.mobicents.servlet.sip.core.Version] (MSC service thread 1-7) Release ID: (Mobicents) Sip Servlets 2.0.0.FINAL (build: Git Hash=r031dc15b05f0bbe5d5e3a9af6a2fb0e2560d9426 date=201210011610)  
16:11:11,711 INFO  [org.mobicents.servlet.sip.core.Version] (MSC service thread 1-7) Mobicents Sip Servlets 2.0.0.FINAL (build: Git Hash=r031dc15b05f0bbe5d5e3a9af6a2fb0e2560d9426 date=201210011610) Started.  
16:11:11,711 INFO  [org.mobicents.servlet.sip.core.Version] (MSC service thread 1-7) Thank you for running Mobicents Community code. For Commercial Grade Support, please purchase a Telscale subscription from http://www.telestax.com  
16:11:11,969 INFO  [org.jboss.ws.common.management.AbstractServerConfig] (MSC service thread 1-3) JBoss Web Services - Stack CXF Server 4.0.2.GA  
16:11:12,162 INFO  [org.mobicents.servlet.sip.catalina.SipProtocolHandler] (MSC service thread 1-4) Sip Connector started on ip address: localhost, port 5081, transport tls, useStun false, stunAddress null, stunPort : -1, useStaticAddress: false, staticServerAddress null, staticServerPort -1  
16:11:12,162 INFO  [org.mobicents.servlet.sip.catalina.SipProtocolHandler] (MSC service thread 1-6) Sip Connector started on ip address: localhost, port 5080, transport tcp, useStun false, stunAddress null, stunPort : -1, useStaticAddress: false, staticServerAddress null, staticServerPort -1  
16:11:12,514 INFO  [org.mobicents.servlet.sip.catalina.SipProtocolHandler] (MSC service thread 1-8) Sip Connector started on ip address: localhost, port 5080, transport udp, useStun false, stunAddress null, stunPort : -1, useStaticAddress: false, staticServerAddress null, staticServerPort -1  
16:11:12,523 INFO  [org.mobicents.servlet.sip.catalina.SipProtocolHandler] (MSC service thread 1-7) Sip Connector started on ip address: localhost, port 5082, transport ws, useStun false, stunAddress null, stunPort : -1, useStaticAddress: false, staticServerAddress null, staticServerPort -1  
16:11:12,614 INFO  [org.jboss.as.server.deployment.scanner] (MSC service thread 1-4) JBAS015012: Started FileSystemDeploymentService for directory /opt/mss-2.0.0.FINAL-jboss-as-7.1.2.Final/standalone/deployments  
16:11:12,630 INFO  [org.jboss.as.remoting] (MSC service thread 1-7) JBAS017100: Listening on `127.0.0.1:9999`  
16:11:12,657 INFO  [org.jboss.as.remoting] (MSC service thread 1-5) JBAS017100: Listening on `127.0.0.1:4447`  
16:11:12,753 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-2) JBAS015876: Starting deployment of "Conference.war"  
16:11:14,165 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015960: Class Path entry xercesImpl.jar in /opt/mss-2.0.0.FINAL-jboss-as-7.1.2.Final/standalone/deployments/Conference.war/WEB-INF/lib/xalan-2.7.0.jar does not point to a valid jar for a Class-Path reference.  
16:11:14,166 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015960: Class Path entry xml-apis.jar in /opt/mss-2.0.0.FINAL-jboss-as-7.1.2.Final/standalone/deployments/Conference.war/WEB-INF/lib/xalan-2.7.0.jar does not point to a valid jar for a Class-Path reference.  
16:11:14,167 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015960: Class Path entry serializer.jar in /opt/mss-2.0.0.FINAL-jboss-as-7.1.2.Final/standalone/deployments/Conference.war/WEB-INF/lib/xalan-2.7.0.jar does not point to a valid jar for a Class-Path reference.   
16:11:14,934 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-1) JBAS010404: Deploying non-JDBC-compliant driver class com.mysql.jdbc.Driver (version 5.1)  
16:11:14,976 INFO  [org.jboss.as.osgi] (MSC service thread 1-2) JBAS011907: Register module: Module "deployment.Conference.war:main" from Service Module Loader   
16:11:15,113 INFO  [org.jboss.web] (MSC service thread 1-7) JBAS018210: Registering web context: /Conference  
16:11:15,128 INFO  [org.jboss.as.server] (ServerService Thread Pool -- 29) JBAS018559: Deployed "Conference.war"  
16:11:15,329 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015951: Admin console listening on `http://127.0.0.1:9990`  
16:11:15,330 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015874: JBoss AS 7.1.2.Final "Steropes" started in 12503ms - Started 182 of 270 services (87 services are passive or on-demand)

之后，我的模块可以使用并且 REST 通信也可以工作，但是所有应该在启动时通过 servlet 初始化的变量/对象都是空的。

有人出主意吗？

Answer 1

你能提供 org.mobicents 类别的调试日志吗？似乎您的 init 方法甚至没有被调用。

我看到 SIP Servlet 在 sip.xml 和注释中都定义了，注释可能在这里优先您是否尝试将 loadOnStartup=1 添加到 @javax.servlet.sip.annotation.SipServlet 注释？

部署应用程序时，init 方法日志记录语句应显示在启动日志中

Answer 2

SipServlet 主初始化一些对象。

ServletSipMultimediaConfrence.java：

    @javax.servlet.sip.annotation.SipServlet
public class ServletSipMultimediaConference extends SipServlet {
    ...
    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        ctx = config.getServletContext();

        System.out.println("Init SIP Servlet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");

        SipFactory sipFactory = (SipFactory) getServletContext().getAttribute(
                SipServlet.SIP_FACTORY);
        if (sipFactory == null) {
            getServletContext().log("SIP Factory is null");
        } else {
            getServletContext().log("SIP Factory set.");
        }
        ContextManager.getInstance().setSipFactory(sipFactory);

        getServletContext().log("SipServlet MultimediaConference initialized.");

        configureThirdPartyCallModule();
    }
...
}

如果我尝试邀请参与者参加会议，我会收到 NullPointerException，因为我的 SipFactory 为空！

多媒体会议Impl.java：

@POST
@Path("/inviteParticipant")
@Override
public void inviteParticipant(@QueryParam("sessionId") String sessionId,
        @QueryParam("callSessionIdentifier") String callSessionIdentifier,
        @QueryParam("participant") String participant) throws PolicyException,
        ServiceException {

    CallSessionConference conferenceSession = getConferenceSession(null,
            callSessionIdentifier);
    if (conferenceSession == null)
        throw new ServiceException("No conference found using id: "
                + callSessionIdentifier);

    conferenceSession.inviteParticipant(participant);
}

这导致以下异常：

Servlet.service() for servlet de.fhg.fokus.ngni.broker.sip.multimediaconference.JaxRsActivator threw exception: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
    at org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:340) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:214) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:190) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:540) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:502) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:119) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50) [resteasy-jaxrs-2.3.3.Final.jar:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.1.Final.jar:1.0.1.Final]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.16.Final.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.16.Final.jar:]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.16.Final.jar:]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.16.Final.jar:]
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.2.Final.jar:7.1.2.Final]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.16.Final.jar:]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.16.Final.jar:]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.16.Final.jar:]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.16.Final.jar:]
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.16.Final.jar:]
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679) [jbossweb-7.0.16.Final.jar:]
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931) [jbossweb-7.0.16.Final.jar:]
    at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
Caused by: java.lang.NullPointerException
    at de.fhg.fokus.ngni.broker.sip.thirdpartycall.Call.<init>(Call.java:100) [classes:]
    at de.fhg.fokus.ngni.broker.sip.thirdpartycall.CallSessionThirdParty.createCallee(CallSessionThirdParty.java:141) [classes:]
    at de.fhg.fokus.ngni.broker.sip.thirdpartycall.CallSessionThirdParty.<init>(CallSessionThirdParty.java:104) [classes:]
    at de.fhg.fokus.ngni.broker.sip.multimediaconference.CallSessionConference.inviteParticipant(CallSessionConference.java:96) [classes:]
    at de.fhg.fokus.ngni.broker.sip.multimediaconference.MultimediaConferenceImpl.inviteParticipant(MultimediaConferenceImpl.java:242) [classes:]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_25]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_25]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_25]
    at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_25]
    at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:167) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:257) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:222) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:211) [resteasy-jaxrs-2.3.3.Final.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:525) [resteasy-jaxrs-2.3.3.Final.jar:]
    ... 19 more

发生这种情况是因为当 Call.java 尝试从 servlet-context 中获取它时，我的 SipFactory 为空。

static {
        factory = ContextManager.getInstance().getSipFactory();
    }

ContextManager 是一个辅助类：

public class ContextManager {

    private SipFactory factory;
//  private BundleContext bundleContext;

    private static ContextManager cm = new ContextManager();

    public static ContextManager getInstance() {
        return cm;
    }

    public SipFactory getSipFactory() {
        return factory;
    }

    public void setSipFactory(SipFactory factory) {
        this.factory = factory;
    }
}

我在这里调试级别的完整日志：https ://community.jboss.org/thread/232864

Answer 3

我发现了问题。这是一个 maven/一个 pom.xml 失败！我忘记将以下条目放入我的 Maven 插件配置中：<warSourceDirectory>WebContent</warSourceDirectory>

<plugin>
    <artifactId>maven-war-plugin</artifactId>
    <version>2.2</version>
    <configuration>
        <warSourceDirectory>WebContent</warSourceDirectory>
        <failOnMissingWebXml>false</failOnMissingWebXml>
    </configuration>
</plugin>

Answer 4

您说问题在于 SipFactory 为空。但是您发布的代码从未初始化 SipFactory。查看 ServletSipMultimediaConference.init() 方法。您只需检查 SipFactory 是否为空，但不对其进行初始化：

public class ServletSipMultimediaConference extends SipServlet {
...
@Override
public void init(ServletConfig config) throws ServletException {
    ...
    SipFactory sipFactory = (SipFactory)getServletContext()
        .getAttribute(SipServlet.SIP_FACTORY);
    if (sipFactory == null) {
        getServletContext().log("SIP Factory is null");
        //  -->  Maybe set up a new SIP Factory here?!  <--
    } else {
        getServletContext().log("SIP Factory set.");
    }
    ContextManager.getInstance().setSipFactory(sipFactory);
    ...
}
}