将RESTEasy JAX-RS应用程序部署到jboss-jbas018040:启动上下文失败

Question

<servlet>
    <servlet-name>resteasy-servlet</servlet-name>
    <servlet-class>
        org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
    </servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>resteasy-servlet</servlet-name>
    <url-pattern>/jax-rs/*</url-pattern>
</servlet-mapping>


<context-param>
    <param-name>resteasy.servlet.mapping.prefix</param-name>
    <param-value>/jax-rs</param-value>
</context-param>

<listener>
    <listener-class>
        org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
    </listener-class>
</listener>

<context-param>
    <param-name>resteasy.scan</param-name>
    <param-value>true</param-value>
</context-param>

<dependency org="org.jboss.resteasy" name="resteasy-jaxrs" rev="3.0.5.Final"/>

WEB-INF/lib/resteasy-jaxrs-3.0.5.Final.jar

14:32:42,537错误[org.jboss.msc.service.fail]（ServerService线程池--316）MSC000001:未能启动服务jboss.web.deployment.default-host./search-rest：org.jboss.msc.msc.service.startException.匿名服务中的服务jboss.web.deployment.default-host./search-rest：org.jboss.msc.default-host./search-rest：S.java:511)[rt.jar:1.8.0_111]在java.util.concurrent.futureTask.run(FutureTask.java:266)[rt.jar:1.8.0_111]在java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:114)[rt.jar:1.8.0_111]在java.util.concurrent.threadpoolexecutor.java:114)[rt.jar:1.8.0_111]在s.threads.jbossThread.run(jbossThread.java:122)

由：org.jboss.msc.service.startException:JBAS018040:在org.jboss.as.web.deployment.webdeploymentService.doStart(webdeploymentService.java:161)在org.jboss.as.web.deployment.webdeploymentService.access$000(webdeploymentService.java:60)在org.jboss.as.web.deployment.webdeploymentService$1.run(webdeploymentService.java：

这是怎么回事，如何调试？

Answer 1

好的，罪魁祸首是下面的罐子：

WEB-INF/lib/resteasy-jaxrs-3.0.5.Final.jar

一旦我消除了这种依赖，它就起作用了。这是有意义的，因为RESTEasy是与JBoss EAP捆绑在一起的，所以不需要将它放在WAR的WEB-INF/lib中。

此外，我发现web.xml中有以下元素：

<listener>
   <listener-class>
       org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
   </listener-class>
</listener>

…没有必要。没有它，一切都能正常工作。

最后，另一个有效的配置是删除scanner元素：

<context-param>
   <param-name>resteasy.scan</param-name>
   <param-value>true</param-value>
</context-param>

…但是，在这种情况下，必须提供javax.ws.rs.core.application子类：

import java.util.Set;
import java.util.HashSet;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

public class JaxRsApplication extends Application { 

 private Set<Object> singletons = new HashSet<Object>();

 public JaxRsApplication() {
     singletons.add( new SearchResource() );
 }

 @Override
 public Set<Object> getSingletons() {
     return singletons;        
 }
}

<servlet>
    <servlet-name>resteasy-servlet</servlet-name>
    <servlet-class>
        org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
    </servlet-class>
    <init-param>
        <param-name>javax.ws.rs.Application</param-name>
        <param-value>mjb44.searchapp.rest.JaxRsApplication</param-value>
    </init-param>
</servlet>