RestEasy - ResteasyServletInitializer失败

Question

所以..。

我已经能够配置一个RestEasy服务，并且使它在Windows8Ubuntu上的Eclipse中工作，但是当我将它部署到安装在Ubuntu上的Tomcat 7上时，它就不能工作了！

当我在Eclipse上启动tomcat时，我收到了这样的消息：

启动Servlet引擎: Apache /7.0.29 11月12,2014 :00:06下午4:06 org.apache.catalina.core.ApplicationContext日志 信息:初始化Spring 11月12,2014 :00:07下午4:07 org.apache.catalina.core.ApplicationContext日志 信息:初始化Spring FrameworkServlet 'MessageBrokerServlet‘ 信息2014-11-12 16:00:08,001 org.jboss.resteasy.spi.ResteasyDeployment -部署javax.ws.rs.core.Application: class javax.ws.rs.core.Application

但是这最后一行不在ubuntu =>上tomcat服务器的日志中，因此当我调用Rest服务(通过javascript /jsapi)时，我得到了以下消息：

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generateEtag()，它在Eclipse中启动时使用我的RestService填充。

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

下面是我使用的配置：

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>
        ...

以及包含内容/WEB-INF/services/javax.servlet.ServletContainerInitializer的文件org.jboss.resteasy.plugins.servlet.ResteasyServletInitializer。

Answer 1

好的，我找到了\o/，对于那些如何解决这个问题的人，这里有一个解决方案：

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>

并重写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;
    }

}