java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.startAsync

Question

Any idea why I'm getting this error at runtime ? I'm trying to deploy an AsyncServlet on Jetty.

java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.startAsync(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)Ljavax/servlet/AsyncContext;
        at my.server.SlowServlet.doGet(SlowServlet.java:16)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:705)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:814)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:547)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:480)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:941)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:409)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:875)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
        at org.eclipse.jetty.server.Server.handle(Server.java:345)
        at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
        at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:919)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582)
        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)
        at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
        at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
        at java.lang.Thread.run(Thread.java:680)

I've the following Maven dependencies in my pom.xml

    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-server</artifactId>
        <version>${jettyVersion}</version>
    </dependency>


    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-servlet</artifactId>
        <version>${jettyVersion}</version>
    </dependency>

    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-servlets</artifactId>
        <version>${jettyVersion}</version>
    </dependency>


    <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-webapp</artifactId>
        <version>${jettyVersion}</version>
    </dependency>

Were you able to solve this problem? I'm running into the same issue and I was wondering if you were able to fix it. — Dawood
– Dawood, Commented Aug 7, 2012 at 21:08
I found the problem. There was a clash in my CLASSPATH with servlet apis from geromino-servlet_2.5_spec-1.1.2. — Soumya Simanta
– Soumya Simanta, Commented Oct 27, 2012 at 4:32

Jeshurun · Accepted Answer · 2012-05-25 17:10:04Z

8

I'm guessing your server is using the wrong version of the Servlet spec. AsyncContext is only available since Servlet spec v 3.0. You probably have the right version in your development environment, but your server uses an outdated version of the api, hence the error at runtime.

answered May 25, 2012 at 17:10

Jeshurun

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3 Comments

Soumya Simanta Over a year ago

Any idea how I can debug this. I'm using Maven and I thought that it should take care of both development and runtime dependencies.

jesse mcconnell Over a year ago

maven does, have you have to give it good information...try using > mvn -X install and that should give you the dependency tree, you might be getting 2.5 transitively from somewhere, in which case you just need to add an exclusion

Soumya Simanta Over a year ago

thanks. I used plugin to find the duplicates and replaced them with an exclusion. <groupId>com.ning.maven.plugins</groupId> <artifactId>maven-duplicate-finder-plugin</artifactId>. However, that still didn't solve my problem.

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