Jetty 8 Maven Plugin jetty：run-war 未检测到 WebApplicationInitializer

【问题标题】：Jetty 8 Maven Plugin jetty:run-war not detecting WebApplicationInitializerJetty 8 Maven Plugin jetty：run-war 未检测到 WebApplicationInitializer
【发布时间】：2012-03-16 07:33:27
【问题描述】：

我在尝试使用 Servlet 3.0 编程方式注册使用 Jetty maven 插件运行的 servlet 来获取 Spring 3.1 Framework webapp 时遇到问题。

这是我的 maven 插件定义（指定一个覆盖 webdefault.xml 已删除默认 servlet 映射）：

<plugin>
    <groupId>org.mortbay.jetty</groupId>
    <artifactId>jetty-maven-plugin</artifactId>
    <version>8.1.1.v20120215</version>
    <configuration>
      <systemProperties>
        <systemProperty>
          <name>DEBUG</name>
          <value>TRUE</value>
        </systemProperty>
      </systemProperties>
      <scanIntervalSeconds>0</scanIntervalSeconds>
      <webAppConfig>
        <defaultsDescriptor>src/main/resources/webdefault.xml</defaultsDescriptor>
      </webAppConfig>
      <stopPort>9966</stopPort>
      <stopKey>foo</stopKey>
    </configuration>
  </plugin>

这是我精简的 web 应用程序：

public class GcpWebApplicationInitializer implements WebApplicationInitializer {
    public void onStartup(ServletContext servletContext) throws ServletException {
        AnnotationConfigWebApplicationContext root = 
          new AnnotationConfigWebApplicationContext();
        root.scan();
        servletContext.addListener(new ContextLoaderListener(root));
        ServletRegistration.Dynamic servlet = servletContext.addServlet("TESTSERVLET", new DispatcherServlet(root));
        servlet.setLoadOnStartup(1);
        servlet.addMapping("/");
    }
}

我用来运行它的命令行是：

mvn -U clean package jetty:run-war

具有以下输出（只是运行战部分）：

[INFO] Configuring Jetty for project: GCP Jetty
[INFO] Context path = /
[INFO] Tmp directory = /Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/tmp
[INFO] Web defaults = src/main/resources/webdefault.xml
[INFO] Web overrides =  none
2012-03-16 17:09:25.668:INFO:oejs.Server:jetty-8.1.1.v20120215
2012-03-16 17:09:25.691:INFO:oejw.WebInfConfiguration:Extract    jar:file:/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT.war!/ to /Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT
2012-03-16 17:09:27.068:INFO:oejpw.PlusConfiguration:No Transaction manager found - if your webapp requires one, please configure one.
2012-03-16 17:09:30.925:INFO:/:No Spring WebApplicationInitializer types detected on classpath
2012-03-16 17:09:31.186:INFO:oejsh.ContextHandler:started o.m.j.p.JettyWebAppContext{/,file:/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT/},/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:09:31.186:INFO:oejsh.ContextHandler:started o.m.j.p.JettyWebAppContext{/,file:/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT/},/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:09:31.186:INFO:oejsh.ContextHandler:started o.m.j.p.JettyWebAppContext{/,file:/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT/},/Users/srowatt/dev/svn/prototypes/gcp-jetty/trunk/target/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:09:31.233:INFO:oejs.AbstractConnector:Started    SelectChannelConnector@0.0.0.0:8080
[INFO] Started Jetty Server

如您所见，它检测到 Spring servlet SpringServletContainerInitializer 但该 servlet 未检测到 GcpWebApplicationInitializer。但是，如果我获取 war 文件并手动将其放在独立的 Jetty 下，它将检测到 GcpWebApplicationInitializer。

Shanes-MacBook-Pro:bin srowatt$ ./jetty.sh  run
Running Jetty: 
2012-03-16 17:26:21.051:INFO::Redirecting stderr/stdout to /Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/logs/2012_03_16.stderrout.log
2012-03-16 17:26:21.353:INFO:oejs.Server:jetty-8.1.1.v20120215
2012-03-16 17:26:21.371:INFO:oejdp.ScanningAppProvider:Deployment monitor /Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps at interval 1
2012-03-16 17:26:21.379:INFO:oejd.DeploymentManager:Deployable added: /Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/cometd.war
2012-03-16 17:26:21.452:INFO:oejw.WebInfConfiguration:Extract jar:file:/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/cometd.war!/ to /private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-cometd.war-_cometd-any-/webapp
2012-03-16 17:26:23.976:WARN:oejj.ObjectMBean:No mbean getter or setters found for maxCookieAge in class org.eclipse.jetty.server.session.HashSessionManager
2012-03-16 17:26:23.976:WARN:oejj.ObjectMBean:No mbean getter or setters found for sessionPath in class org.eclipse.jetty.server.session.HashSessionManager
2012-03-16 17:26:24.215:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/cometd,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-cometd.war-_cometd-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/cometd.war
2012-03-16 17:26:24.216:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/cometd,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-cometd.war-_cometd-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/cometd.war
2012-03-16 17:26:24.216:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/cometd,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-cometd.war-_cometd-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/cometd.war
2012-03-16 17:26:24.466:INFO:oejd.DeploymentManager:Deployable added: /Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root
2012-03-16 17:26:24.576:WARN:oejj.ObjectMBean:No mbean getter or setters found for maxCookieAge in class org.eclipse.jetty.server.session.HashSessionManager
2012-03-16 17:26:24.576:WARN:oejj.ObjectMBean:No mbean getter or setters found for sessionPath in class org.eclipse.jetty.server.session.HashSessionManager
2012-03-16 17:26:24.581:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/,file:/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root
2012-03-16 17:26:24.581:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/,file:/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root
2012-03-16 17:26:24.581:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/,file:/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/root
2012-03-16 17:26:24.583:INFO:oejd.DeploymentManager:Deployable added: /Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:26:24.602:INFO:oejw.WebInfConfiguration:Extract jar:file:/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/gcp-jetty-0.0.1-SNAPSHOT.war!/ to /private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-gcp-jetty-0.0.1-SNAPSHOT.war-_gcp-jetty-0.0.1-SNAPSHOT-any-/webapp
2012-03-16 17:26:29.305:WARN:oejj.ObjectMBean:No mbean getter or setters found for maxCookieAge in class org.eclipse.jetty.server.session.HashSessionManager
2012-03-16 17:26:29.305:WARN:oejj.ObjectMBean:No mbean getter or setters found for sessionPath in class org.eclipse.jetty.server.session.HashSessionManager
2012-03-16 17:26:29.314:INFO:g0.1-SNAPSHOT:Spring WebApplicationInitializers detected on classpath: [com.gcpgroup.jetty.GcpWebApplicationInitializer@11767553]
2012-03-16 17:26:30.362:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/gcp-jetty-0.0.1-SNAPSHOT,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-gcp-jetty-0.0.1-SNAPSHOT.war-_gcp-jetty-0.0.1-SNAPSHOT-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:26:30.363:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/gcp-jetty-0.0.1-SNAPSHOT,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-gcp-jetty-0.0.1-SNAPSHOT.war-_gcp-jetty-0.0.1-SNAPSHOT-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:26:30.363:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/gcp-jetty-0.0.1-SNAPSHOT,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-gcp-jetty-0.0.1-SNAPSHOT.war-_gcp-jetty-0.0.1-SNAPSHOT-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:26:30.363:INFO:g0.1-SNAPSHOT:Initializing Spring root WebApplicationContext
2012-03-16 17:26:30.495:INFO:oejsh.ContextHandler:started o.e.j.w.WebAppContext{/gcp-jetty-0.0.1-SNAPSHOT,file:/private/var/folders/k3/bb7sgd616rdbwj9n0xl2k92m0000gq/T/jetty-0.0.0.0-8080-gcp-jetty-0.0.1-SNAPSHOT.war-_gcp-jetty-0.0.1-SNAPSHOT-any-/webapp/},/Users/srowatt/dev/tools/jetty-hightide-8.1.1.v20120215/webapps/gcp-jetty-0.0.1-SNAPSHOT.war
2012-03-16 17:26:30.498:INFO:g0.1-SNAPSHOT:Initializing Spring FrameworkServlet 'TESTSERVLET'

如果我使用 mvn -U clean package jetty:run 那么它也会检测到 GcpWebApplicationInitializer 。

那么，为什么 jetty:run-war 的行为不符合我的预期？最初我认为是码头插件导致问题，但现在我认为这更像是 Spring 问题或类路径问题。

【问题讨论】：

  • 我试图在我的 IDE 中调试它，并在 SpringServletContainerInitializer.onStartup() 调用 jetty:run 上设置断点，传入正确的 webAppInitializerClasses 设置，其中包含我的 servlet 类。同一断点上的 jetty:run-war 没有传入 webAppInitializerClasses。调用此方法的是 Jetty，因此看起来 Jetty 没有处理 @HandlesTypes(WebApplicationInitializer.class) 注释。
  • 另外，在我的 webdefault.xml 中，我还尝试将 metadata-complete 设置为 false - 这没有帮助。我还尝试将 web_app_2_5.xsd 提升到 web_app_3_0.xsd，但仍然没有帮助。

标签： maven jetty


【解决方案1】：

我们在 spring 3.1 和 jetty 8 中使用类似的设置。我们的配置是：

        <plugin>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>jetty-maven-plugin</artifactId>
            <version>${jetty.version}</version>
            <configuration>
                <webApp>
                    <contextPath>/</contextPath>
                </webApp>
                <jettyConfig>src/main/resources/jetty.xml</jettyConfig>
                <systemProperties>
                    <systemProperty>
                        <name>log4j.configuration</name>
                        <value>file://${project.basedir}/src/main/conf/target/generated-resources/log4j.xml</value>
                    </systemProperty>
                    <systemProperty>
                        <name>env</name>
                        <value>${env}</value>
                    </systemProperty>
                </systemProperties>
                <stopKey>I_CANT_STAND_IT_ANYMORE</stopKey>
                <stopPort>54124</stopPort>
            </configuration>
        </plugin>

你需要 maven 3.x，使用 maven 2 你最终会得到一个不兼容 servlet 3.0 的码头。

【讨论】：

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