java - RestEasy - ResteasyServletInitializer 失败

Question

所以....

我已经能够配置 RestEasy 服务并让它在我的 Windows 8 上的 Eclipse 中工作但是当我将它部署在安装在 Ubuntu 上的 Tomcat 7 上时它不起作用!

当我在 Eclipse 上启动我的 tomcat 时，我收到消息:

INFO: Starting Servlet Engine: Apache Tomcat/7.0.29
nov. 12, 2014 4:00:06 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
nov. 12, 2014 4:00:07 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'MessageBrokerServlet'
[INFO ] 2014-11-12 16:00:08,001 org.jboss.resteasy.spi.ResteasyDeployment - Deploying javax.ws.rs.core.Application: class fr.mycompany.myproject.MarkersApplication

但是这最后一行不存在于 ubuntu 上的 tomcat 服务器的日志中=> 因此，当我调用我的 Rest 服务(通过 javascript/jsapi)时，我收到了这条消息:

GRAVE: "Servlet.service()" pour la servlet RESTEasy JSAPI a généré une exception
java.lang.NullPointerException
    at org.jboss.resteasy.jsapi.JSAPIWriter.generateEtag(JSAPIWriter.java:111)
    at org.jboss.resteasy.jsapi.JSAPIWriter.writeJavaScript(JSAPIWriter.java:36)
    at org.jboss.resteasy.jsapi.JSAPIServlet.service(JSAPIServlet.java:73)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)

null(我想)是 generateEtag() 方法的 serviceRegistries，它在 Eclipse Tomcat 中启动时用我的 RestService 填充。

我不知道为什么 ResteasyServletInitializer 会启动/初始化，所以如果有人遇到这种情况(以及解决方案 ^^)，请帮助我 T_T

这是我使用的配置:

申请声明:

@ApplicationPath("/resteasy")
public class MarkersApplication extends Application {

}

服务:

@Path("/markersRest")
public class MarkersRest {

    @Context
    private ServletContext  context;

    private DataService getService() {
        return WebApplicationContextUtils.getWebApplicationContext(context).getBean(DataService.class);
    }

    @POST
    @Produces(MediaType.TEXT_PLAIN)
    public Response getMarkers(@QueryParam("keyCache") String keyCache) {
        String markers = getService().getCachedMarkers(keyCache);

        return Response.ok().entity(markers).build();
    }

}

web.xml :

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0" metadata-complete="true">

    <display-name>MyProject</display-name>

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

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

    <!-- ************************ -->
    <!-- ******* LISTENERS ****** -->
    <!-- ************************ -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <listener>
        <listener-class>flex.messaging.HttpFlexSession</listener-class>
    </listener>

    <!-- ************************ -->
    <!-- ******* SERVLETS ******* -->
    <!-- ************************ -->

    <servlet>
        <servlet-name>MessageBrokerServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:/spring/spring-flex-config.xml</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>MessageBrokerServlet</servlet-name>
        <url-pattern>/messagebroker/*</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>RESTEasy JSAPI</servlet-name>
        <servlet-class>org.jboss.resteasy.jsapi.JSAPIServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>RESTEasy JSAPI</servlet-name>
        <url-pattern>/rest-js</url-pattern>
    </servlet-mapping>

</web-app>

pom.xml :

        ...
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-servlet-initializer</artifactId>
            <version>3.0.9.Final</version>
        </dependency>
        <dependency>
            <groupId>org.jboss.resteasy</groupId>
            <artifactId>resteasy-jsapi</artifactId>
            <version>3.0.9.Final</version>
        </dependency>
        ...

和文件 /WEB-INF/services/javax.servlet.ServletContainerInitializer内容为 org.jboss.resteasy.plugins.servlet.ResteasyServletInitializer

Answer 1

好的，我找到了\o/，对于那些遇到这个问题的人，这里是解决方案:

在 web.xml 中添加 servlet 声明:

<servlet>
    <servlet-name>Resteasy</servlet-name>
    <servlet-class>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class>
    <load-on-startup>1</load-on-startup>
    <init-param>
        <param-name>javax.ws.rs.Application</param-name>
        <param-value>fr.mycompany.myproject.MarkersApplication</param-value>
    </init-param>
</servlet>
<servlet-mapping>
    <servlet-name>Resteasy</servlet-name>
    <url-pattern>/resteasy/*</url-pattern>
</servlet-mapping>

并覆盖您的 SubApplication 上的方法:

@ApplicationPath("/resteasy")
public class MarkersApplication extends Application {

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

    public MarkersApplication() {
        singletons.add(new MarkersRest());
    }

    @Override
    public Set<Class<?>> getClasses() {
        HashSet<Class<?>> set = new HashSet<Class<?>>();
        return set;
    }

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

}