8
今天我有了構建一個非常簡單的Web應用程序的想法，它將由一個REST後端供電。因爲我想要一個非常輕量級的服務器，所以我開始考慮Jetty。因爲我想嘗試另一個JAX-RS實現，所以我看了一下RestEasy。我認爲這兩項將很容易實施。我錯了...Jetty 9.0嵌入式和RestEasy 3.0持續拋出NoSuchMethodError
我導入了基本的Jetty服務器和servlet依賴項，因爲我認爲這是基本（僅REST）Jetty服務器的唯一服務器需求（我嘗試使用webapp依賴項;這給了相同的錯誤）。
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-server</artifactId>
<version>9.0.0.RC0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-servlet</artifactId>
<version>9.0.0.RC0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-servlets</artifactId>
<version>9.0.0.RC0</version>
<scope>compile</scope>
</dependency>
然後我進口的基本RestEasy的依賴關係。
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
<version>3.0.1.Final</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxb-provider</artifactId>
<version>3.0.1.Final</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>async-http-servlet-3.0</artifactId>
<version>3.0.1.Final</version>
<scope>compile</scope>
</dependency>
主要方法：
public class ExampleActivator {
public static void main(String args[]) throws Exception {
Server server = new Server(8080);
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
context.setContextPath("/");
ServletHolder h = new ServletHolder(new HttpServlet30Dispatcher());
h.setInitParameter("javax.ws.rs.Application", "packages.ExampleResources");
context.addServlet(h, "/*");
server.setHandler(context);
server.start();
server.join();
}
}
ExampleResources：
public class ExampleResources extends Application {
private static final ImmutableSet services = ImmutableSet.of(
ExampleResourceImpl.class
);
@Override
public Set<Class<?>> getClasses() {
return services;
}
}
ExampleResourceImpl：
@Path("activities")
public class ExampleResourceImpl {
@GET
@Produces(MediaType.TEXT_PLAIN)
public String getAll() {
return "Hello World";
}
}
當我去webapge我得到以下跟蹤：
250 [main] INFO org.eclipse.jetty.server.Server - jetty-9.0.0.RC0
911 [main] INFO org.jboss.resteasy.spi.ResteasyDeployment - Deploying javax.ws.rs.core.Application: class packages.ExampleResources
939 [main] INFO org.jboss.resteasy.spi.ResteasyDeployment - Adding class resource packages.ExampleResourceImpl from Application class packages.ExampleResources
1005 [main] INFO org.eclipse.jetty.server.handler.ContextHandler - started [email protected]{/,null,AVAILABLE}
1037 [main] INFO org.eclipse.jetty.server.ServerConnector - Started [email protected]{HTTP/1.1}{0.0.0.0:8080}
6315 [qtp84346444-13] WARN org.eclipse.jetty.servlet.ServletHandler - Error for /activities
java.lang.NoSuchMethodError: org.jboss.resteasy.specimpl.BuiltResponse.getHeaders()Ljavax/ws/rs/core/MultivaluedMap;
at org.jboss.resteasy.core.ServerResponseWriter.setDefaultContentType(ServerResponseWriter.java:195)
at org.jboss.resteasy.core.ServerResponseWriter.writeNomapResponse(ServerResponseWriter.java:46)
at org.jboss.resteasy.core.SynchronousDispatcher.writeResponse(SynchronousDispatcher.java:411)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:376)
at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:671)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:448)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1070)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:375)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1004)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:449)
at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:246)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:265)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:240)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:589)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:520)
at java.lang.Thread.run(Thread.java:722)
通常這意味着我忘記了依賴關係，但是我真的不知道發生了什麼。
碼頭9.0.4.v20130625應該代替一個RC –
我已經改變了碼頭依賴於9.0.4.v2013062版本一起使用。我一直得到同樣的例外。 – Wouter
剛剛遇到同樣的問題..在我的情況下開始與'mvn運行爆炸碼頭工作正常，並與'mvn運行'它沒有！？添加jaxrs-api確實修復了它.. – milan