可运行的jar生产模式：无法找到包清单文件'frontend：//vaadin-flow-bundle-manifest.json'

Question

在我的Kotlin码头项目中，我由maven构建。 我需要在生产模式下开始应用。 （从这里https://vaadin.com/docs/flow/production/tutorial-production-mode-basic.html） 结果是我的pom.xml

    <profiles>
        <profile>
            <id>production-mode</id>
            <dependencies>
                <dependency>
                    <groupId>com.vaadin</groupId>
                    <artifactId>flow-server-production-mode</artifactId>
                </dependency>
            </dependencies>

            <build>
                <plugins>
                    <plugin>
                        <groupId>com.vaadin</groupId>
                        <artifactId>vaadin-maven-plugin</artifactId>
                        <version>${vaadin.version}</version>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>copy-production-files</goal>
                                    <goal>package-for-production</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
</profile>

因此要通过Maven以生产模式启动，我使用命令：

mvn jetty:run-exploded -Pproduction-mode

，我的Web应用程序以生产模式启动。 很好。

但是我也需要创建可执行jar（或war）以从控制台启动Web应用程序。 因此，我使用了maven的插件“ maven-shade-plugin” 因此，在我的pom.xml中添加：

plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.2.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.myproject.AppStarterKt</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
</plugin>

并在生产模式下创建jar：

mvn verify -Pproduction-mode

结果我得到了满足所有依赖关系的独立（可运行）jar。很好。

但是当我想像这样在生产模式下启动独立jar时：

java -Dvaadin.productionMode=true -jar myproject-1.0-SNAPSHOT.jar

但是我得到了错误：

[qtp1495242910-15] WARN org.eclipse.jetty.server.handler.ContextHandler.ROOT - unavailable
java.lang.IllegalArgumentException: Failed to find the bundle manifest file 'frontend://vaadin-flow-bundle-manifest.json' in the servlet context for 'ES6' browsers. If you are running a dev-mode servlet container in maven e.g. `jetty:run` change it to `jetty:run-exploded`. If you are not compiling frontend resources, include the 'vaadin-maven-plugin' in your build script. Otherwise, you can skip this error either by disabling production mode, or by setting the servlet parameter 'original.frontend.resources=true'.
    at com.vaadin.flow.server.startup.BundleFilterFactory.readBundleManifest(BundleFilterFactory.java:89)
    at com.vaadin.flow.server.startup.BundleFilterFactory.createBundleFilterForBrowser(BundleFilterFactory.java:79)
    at com.vaadin.flow.server.startup.BundleFilterFactory.createFilters(BundleFilterFactory.java:70)
    at com.vaadin.flow.server.VaadinService.init(VaadinService.java:275)
    at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:201)
    at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:182)
    at com.vaadin.flow.server.VaadinServlet.init(VaadinServlet.java:72)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:672)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:521)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:805)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:537)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:502)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
    at java.lang.Thread.run(Unknown Source)
[qtp1495242910-15] WARN org.eclipse.jetty.server.HttpChannel - /booking-v2
javax.servlet.ServletException: com.vaadin.flow.server.startup.ServletDeployer@a1f5568f==com.vaadin.flow.server.VaadinServlet,jsp=null,order=-1,inst=false,async=true
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:693)
    at org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:521)
    at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:805)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:537)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
    at org.eclipse.jetty.server.Server.handle(Server.java:502)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Failed to find the bundle manifest file 'frontend://vaadin-flow-bundle-manifest.json' in the servlet context for 'ES6' browsers. If you are running a dev-mode servlet container in maven e.g. `jetty:run` change it to `jetty:run-exploded`. If you are not compiling frontend resources, include the 'vaadin-maven-plugin' in your build script. Otherwise, you can skip this error either by disabling production mode, or by setting the servlet parameter 'original.frontend.resources=true'.
    at com.vaadin.flow.server.startup.BundleFilterFactory.readBundleManifest(BundleFilterFactory.java:89)
    at com.vaadin.flow.server.startup.BundleFilterFactory.createBundleFilterForBrowser(BundleFilterFactory.java:79)
    at com.vaadin.flow.server.startup.BundleFilterFactory.createFilters(BundleFilterFactory.java:70)
    at com.vaadin.flow.server.VaadinService.init(VaadinService.java:275)
    at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:201)
    at com.vaadin.flow.server.VaadinServlet.createServletService(VaadinServlet.java:182)
    at com.vaadin.flow.server.VaadinServlet.init(VaadinServlet.java:72)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:672)

Answer 1

在生产构建期间，vaadin-maven-plugin创建一个生产包，并将生成的文件放入/target/<nameAndVersion>/中，以便在以.war部署时，这些文件可用作静态资源。当打包为jar文件并嵌入servlet容器时，您需要配置插件以将这些文件放在其他位置。

使用哪个位置取决于嵌入式servlet容器的配置方式。一种很流行的选择是使用META-INF/resources。要使其以这种方式工作，您可以将插件的transpileOutputDirectory配置参数设置为${project.build.outputDirectory}/META-INF/resources。