如何使用Maven的"shade"将Apache CXF应用程序打包到整体JAR中插入 [英] How to package an Apache CXF application into a monolithic JAR with the Maven "shade" plugin

问题描述

我正在编写一个基于控制台的Java应用程序，该应用程序打算由cron以批处理方式运行.批处理应用程序使用用于JAX-WS的Apache CXF框架来调用SOAP Web服务.

I am writing a console-based Java application, intended to be run by cron in a batch-processing manner. The batch-processing application makes calls to a SOAP web service, using the Apache CXF framework for JAX-WS.

为了简化部署并防止CLASSPATH问题，我想使用.

To make deployment easier, and to prevent CLASSPATH issues, I would like to bundle up the application (with all its dependencies) into a single monolithic JAR file... using the "shade" plugin for Maven.

当我从Eclipse工作区运行它时，我的应用程序运行正常.但是，当我尝试执行带阴影的JAR文件时，会得到如下所示的堆栈跟踪:

My application works just fine when I run it from my Eclipse workspace. However, when I try executing the shaded JAR file I get a stacktrace such as the following:

org.apache.cxf.service.factory.ServiceConstructionException: Could not resolve a binding for null 
            at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createBindingInfo(AbstractWSDLBasedEndpointFactory.java:404) 
            at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpointInfo(AbstractWSDLBasedEndpointFactory.java:258) 
            at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:146) 
            at org.apache.cxf.frontend.ClientFactoryBean.create(ClientFactoryBean.java:52) 
            at org.apache.cxf.frontend.ClientProxyFactoryBean.create(ClientProxyFactoryBean.java:102) 
            at org.apache.cxf.jaxws.JaxWsProxyFactoryBean.create(JaxWsProxyFactoryBean.java:115) 
            at com.example.gui.domain.Session.getService(Session.java:145) 
            at com.example.gui.domain.service.soap.AbstractServiceImpl.<init>(AbstractServiceImpl.java:23) 
            at com.example.gui.domain.service.soap.GetUserConsoleOrgsImpl.<init>(GetUserConsoleOrgsImpl.java:14) 
            at com.example.gui.domain.service.ServiceFactory.getGetUserConsoleOrgsService(ServiceFactory.java:443) 
            at com.example.gui.domain.AccessManager.getOrgs(AccessManager.java:62) 
            at com.example.gui.windows.ConsoleApplet.login (ConsoleApplet.java:1253) 
            at com.example.gui.windows.ConsoleApplet.init(ConsoleApplet.java:1227) 
            at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) 
            at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.cxf.BusException: No binding factory for namespace http://schemas.xmlsoap.org/soap/ registered. 
            at org.apache.cxf.binding.BindingFactoryManagerImpl.getBindingFactory(BindingFactoryManagerImpl.java:91) 
            at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createBindingInfo(AbstractWSDLBasedEndpointFactory.java:394) 
            ... 14 more 
java.lang.NullPointerException 
            at com.example.gui.domain.service.soap.GetUserConsoleOrgsImpl.getUserConsoleOrgs(GetUserConsoleOrgsImpl.java:29) 
            at com.example.gui.domain.AccessManager.getOrgs(AccessManager.java:64) 
            at com.example.gui.windows.ConsoleApplet.login (ConsoleApplet.java:1253) 
            at com.example.gui.windows.ConsoleApplet.init(ConsoleApplet.java:1227) 
            at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) 
            at java.lang.Thread.run(Unknown Source) 

实际上，如果您签出

In fact, if you check out this discussion board message, I'm having the exact same problem that this guy is having. As another person pointed out in that that thread, my issue is probably with the Maven "shade" plugin.

Apache CXF由许多JAR文件依赖项组成，并且显然有超过一个JAR文件依赖于META-INF目录中的内容. Maven的"shade"插件显然是将所有这些META-INF目录折叠为一个目录，并覆盖必要的文件，而不是将它们合并在一起.

Apache CXF consists of numerous JAR file dependencies, and apparently more than one of those JAR's rely on contents within their META-INF directories. The Maven "shade" plugin is apparently collapsing all those META-INF directories into one, and overwriting necessary files rather than merging them together.

该讨论线程中的某人提供了指向此Maven POM文件的链接，表明有一些配置选项和转换器可以使"shade"插件正确合并这些CXF依赖项.我将这些设置插入到自己的POM中，如下所示:

Someone in that discussion thread provided a link to this Maven POM file, showing that there are config options and transformers for making the "shade" plugin merge these CXF dependencies properly. I plugged these these settings into my own POM, like so:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>1.4</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>
            <configuration>
                <transformers>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                        <mainClass>com.example.MainClass</mainClass>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.ApacheNoticeResourceTransformer">
                        <projectName>Apache CXF</projectName>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                        <resource>META-INF/spring.handlers</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                        <resource>META-INF/services/com.sun.tools.xjc.Plugin</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                        <resource>META-INF/spring.schemas</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                        <resource>META-INF/cxf/cxf.extension</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
                        <resource>META-INF/extensions.xml</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
                        <resource>META-INF/cxf/extensions.xml</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                        <resource>META-INF/cxf/bus-extensions.txt</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
                        <resource>META-INF/cxf/bus-extensions.xml</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
                        <resource>META-INF/wsdl.plugin.xml</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
                        <resource>META-INF/tools.service.validator.xml</resource>
                    </transformer>
                    <transformer implementation="org.apache.cxf.maven.PluginTransformer">
                        <resource>META-INF/tools-plugin.xml</resource>
                    </transformer>
                    <transformer
                        implementation="org.apache.maven.plugins.shade.resource.XmlAppendingTransformer">
                        <resource>META-INF/cxf/java2wsbeans.xml</resource>
                    </transformer>
                    <transformer implementation="org.apache.cxf.maven.CXFAllTransformer" />
                </transformers>
            </configuration>
        </execution>
    </executions>
</plugin>

但是，对于这些设置的作用，我找不到任何真实的解释……并且在启用调试输出的情况下运行Maven时出现以下错误:

However, I can't find any real explanation for what these settings are doing... and I get the following error when running Maven with debug output enabled:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1:14.357s
[INFO] Finished at: Tue Jul 26 11:10:43 EDT 2011
[INFO] Final Memory: 18M/59M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:1.4:shade (default) on project salestax-poster: Unable to parse configuration of mojo org.apache.maven.plugins:maven-shade-plugin:1.4:shade: ClassNotFoundException: Class name which was explicitly given in configuration using 'implementation' attribute: 'org.apache.cxf.maven.PluginTransformer' cannot be loaded -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:1.4:shade (default) on project salestax-poster: Unable to parse configuration of mojo org.apache.maven.plugins:maven-shade-plugin:1.4:shade: ClassNotFoundException: Class name which was explicitly given in configuration using 'implementation' attribute: 'org.apache.cxf.maven.PluginTransformer' cannot be loaded
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:221)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
...

似乎抱怨它找不到org.apache.cxf.maven.PluginTransformer类，该类似乎存在于cxf-buildtools包中.但是，当我将该程序包添加到POM的依赖项时，在构建过程中又遇到了另一个错误:

It seems to complain that it can't find the org.apache.cxf.maven.PluginTransformer class, which seems to exist in the cxf-buildtools package. However, when I add that package to the POM's dependencies, I get yet another error in the build process:

Jul 26, 2011 10:44:02 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.apache.cxf.bus.spring.BusApplicationContext@3aa42c31: display name [org.apache.cxf.bus.spring.BusApplicationContext@3aa42c31]; startup date [Tue Jul 26 10:44:02 EDT 2011]; root of context hierarchy
Jul 26, 2011 10:44:02 AM org.apache.cxf.bus.spring.BusApplicationContext getConfigResources
INFO: No cxf.xml configuration file detected, relying on defaults.
Jul 26, 2011 10:44:02 AM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
INFO: Bean factory for application context [org.apache.cxf.bus.spring.BusApplicationContext@3aa42c31]: org.springframework.beans.factory.support.DefaultListableBeanFactory@47fe1e26
Jul 26, 2011 10:44:02 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@47fe1e26: defining beans [cxf,org.apache.cxf.bus.spring.BusApplicationListener,org.apache.cxf.bus.spring.BusWiringBeanFactoryPostProcessor,org.apache.cxf.bus.spring.Jsr250BeanPostProcessor,org.apache.cxf.bus.spring.BusExtensionPostProcessor,org.apache.cxf.resource.ResourceManager,org.apache.cxf.configuration.Configurer,org.apache.cxf.binding.BindingFactoryManager,org.apache.cxf.transport.DestinationFactoryManager,org.apache.cxf.transport.ConduitInitiatorManager,org.apache.cxf.wsdl.WSDLManager,org.apache.cxf.phase.PhaseManager,org.apache.cxf.workqueue.WorkQueueManager,org.apache.cxf.buslifecycle.BusLifeCycleManager,org.apache.cxf.endpoint.ServerRegistry,org.apache.cxf.endpoint.ServerLifeCycleManager,org.apache.cxf.endpoint.ClientLifeCycleManager,org.apache.cxf.transports.http.QueryHandlerRegistry,org.apache.cxf.endpoint.EndpointResolverRegistry,org.apache.cxf.headers.HeaderManager,org.apache.cxf.catalog.OASISCatalogManager,org.apache.cxf.endpoint.ServiceContractResolverRegistry]; root of factory hierarchy
[DEBUG] 
java.lang.AbstractMethodError: org.apache.xerces.dom.ElementNSImpl.setUserData(Ljava/lang/String;Ljava/lang/Object;Lorg/w3c/dom/UserDataHandler;)Ljava/lang/Object;
    at org.apache.cxf.tools.validator.internal.Stax2DOM.startElement(Stax2DOM.java:173)
    at org.apache.cxf.tools.validator.internal.Stax2DOM.getDocument(Stax2DOM.java:135)
    at org.apache.cxf.tools.validator.internal.Stax2DOM.getDocument(Stax2DOM.java:95)
    at org.apache.cxf.tools.validator.internal.Stax2DOM.getDocument(Stax2DOM.java:76)
    at org.apache.cxf.tools.validator.internal.WSDL11Validator.getWSDLDoc(WSDL11Validator.java:91)
    at org.apache.cxf.tools.validator.internal.WSDL11Validator.isValid(WSDL11Validator.java:111)
    at org.apache.cxf.tools.wsdlto.frontend.jaxws.wsdl11.JAXWSDefinitionBuilder.validate(JAXWSDefinitionBuilder.java:201)
    at org.apache.cxf.tools.wsdlto.frontend.jaxws.wsdl11.JAXWSDefinitionBuilder.validate(JAXWSDefinitionBuilder.java:61)
    at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:132)
    at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:238)
    at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:83)
    at org.apache.cxf.tools.wsdlto.WSDLToJava.run(WSDLToJava.java:103)
    at org.apache.cxf.maven_plugin.WSDL2JavaMojo.processWsdl(WSDL2JavaMojo.java:360)
    at org.apache.cxf.maven_plugin.WSDL2JavaMojo.execute(WSDL2JavaMojo.java:257)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Jul 26, 2011 10:44:03 AM org.springframework.context.support.AbstractApplicationContext doClose
INFO: Closing org.apache.cxf.bus.spring.BusApplicationContext@3aa42c31: display name [org.apache.cxf.bus.spring.BusApplicationContext@3aa42c31]; startup date [Tue Jul 26 10:44:02 EDT 2011]; root of context hierarchy
Jul 26, 2011 10:44:03 AM org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons
INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@47fe1e26: defining beans [cxf,org.apache.cxf.bus.spring.BusApplicationListener,org.apache.cxf.bus.spring.BusWiringBeanFactoryPostProcessor,org.apache.cxf.bus.spring.Jsr250BeanPostProcessor,org.apache.cxf.bus.spring.BusExtensionPostProcessor,org.apache.cxf.resource.ResourceManager,org.apache.cxf.configuration.Configurer,org.apache.cxf.binding.BindingFactoryManager,org.apache.cxf.transport.DestinationFactoryManager,org.apache.cxf.transport.ConduitInitiatorManager,org.apache.cxf.wsdl.WSDLManager,org.apache.cxf.phase.PhaseManager,org.apache.cxf.workqueue.WorkQueueManager,org.apache.cxf.buslifecycle.BusLifeCycleManager,org.apache.cxf.endpoint.ServerRegistry,org.apache.cxf.endpoint.ServerLifeCycleManager,org.apache.cxf.endpoint.ClientLifeCycleManager,org.apache.cxf.transports.http.QueryHandlerRegistry,org.apache.cxf.endpoint.EndpointResolverRegistry,org.apache.cxf.headers.HeaderManager,org.apache.cxf.catalog.OASISCatalogManager,org.apache.cxf.endpoint.ServiceContractResolverRegistry]; root of factory hierarchy
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.152s
[INFO] Finished at: Tue Jul 26 10:44:03 EDT 2011
[INFO] Final Memory: 10M/59M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.cxf:cxf-codegen-plugin:2.2:wsdl2java (generate-sources) on project salestax-poster: org.apache.xerces.dom.ElementNSImpl.setUserData(Ljava/lang/String;Ljava/lang/Object;Lorg/w3c/dom/UserDataHandler;)Ljava/lang/Object; -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.cxf:cxf-codegen-plugin:2.2:wsdl2java (generate-sources) on project salestax-poster: org.apache.xerces.dom.ElementNSImpl.setUserData(Ljava/lang/String;Ljava/lang/Object;Lorg/w3c/dom/UserDataHandler;)Ljava/lang/Object;
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: org.apache.xerces.dom.ElementNSImpl.setUserData(Ljava/lang/String;Ljava/lang/Object;Lorg/w3c/dom/UserDataHandler;)Ljava/lang/Object;
    at org.apache.cxf.maven_plugin.WSDL2JavaMojo.processWsdl(WSDL2JavaMojo.java:363)
    at org.apache.cxf.maven_plugin.WSDL2JavaMojo.execute(WSDL2JavaMojo.java:257)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    ... 19 more
Caused by: java.lang.AbstractMethodError: org.apache.xerces.dom.ElementNSImpl.setUserData(Ljava/lang/String;Ljava/lang/Object;Lorg/w3c/dom/UserDataHandler;)Ljava/lang/Object;
    at org.apache.cxf.tools.validator.internal.Stax2DOM.startElement(Stax2DOM.java:173)
    at org.apache.cxf.tools.validator.internal.Stax2DOM.getDocument(Stax2DOM.java:135)
    at org.apache.cxf.tools.validator.internal.Stax2DOM.getDocument(Stax2DOM.java:95)
    at org.apache.cxf.tools.validator.internal.Stax2DOM.getDocument(Stax2DOM.java:76)
    at org.apache.cxf.tools.validator.internal.WSDL11Validator.getWSDLDoc(WSDL11Validator.java:91)
    at org.apache.cxf.tools.validator.internal.WSDL11Validator.isValid(WSDL11Validator.java:111)
    at org.apache.cxf.tools.wsdlto.frontend.jaxws.wsdl11.JAXWSDefinitionBuilder.validate(JAXWSDefinitionBuilder.java:201)
    at org.apache.cxf.tools.wsdlto.frontend.jaxws.wsdl11.JAXWSDefinitionBuilder.validate(JAXWSDefinitionBuilder.java:61)
    at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:132)
    at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:238)
    at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:83)
    at org.apache.cxf.tools.wsdlto.WSDLToJava.run(WSDLToJava.java:103)
    at org.apache.cxf.maven_plugin.WSDL2JavaMojo.processWsdl(WSDL2JavaMojo.java:360)
    ... 22 more

是否有人在Maven阴影JAR上下文中使用过Apache CXF，并且可以提供一些有关如何使其正常工作的指南?

Has anyone ever used Apache CXF in the context of a Maven shaded JAR, and can provide some guidance as to how you make this work properly?

推荐答案

我或多或少地解决了这个问题.

I solved the problem, more or less.

Maven的"shade"插件带有"transformers"的概念，使您可以将冲突的文件合并到整体JAR中，而不用一个覆盖另一个.变压器的类型不同...最常见的是:

The Maven "shade" plugin comes with the concept of "transformers", which enable you to merge conflicting files together in the monolithic JAR rather than having one overwrite the other. There are different types of transformers... with the most common being:

• org.apache.maven.plugins.shade.resource.AppendingTransformer-只需将一个文本文件附加到另一个文本文件的末尾
• org.apache.maven.plugins.shade.resource.XmlAppendingTransformer-将XML附加在一起，同时保持格式合理

• org.apache.maven.plugins.shade.resource.AppendingTransformer -- simply appends one text file onto the end of another
• org.apache.maven.plugins.shade.resource.XmlAppendingTransformer -- appends XML together while keeping the format sane

在上面的POM片段中，我从讨论板线程中提供的示例中提取了一个转换器列表.它包括两个不随需即用的默认默认"shade"插件的转换器:

In my above POM snippet, I had taken a list of transformers from the example provided in that discussion board thread. It included two transformers that were NOT part of the default "shade" plugin out-of-the-box:

• org.apache.cxf.maven.PluginTransformer
• org.apache.cxf.maven.CXFAllTransformer

• org.apache.cxf.maven.PluginTransformer
• org.apache.cxf.maven.CXFAllTransformer

显然，这两个是CXF特定的附加组件，它们不是"shade"插件所附带的，而必须由CXF JAR的单独提供.

Apparently, these two are CXF-specific add-ons which do not come with the "shade" plugin, but must be provided separately by CXF JAR's.

我的解决方案"是不完整的，因为我无法弄清楚如何使这些依赖关系就位.它们似乎是cxf-buildtools Maven依赖软件包的一部分...但是作为上述问题文档，无论我如何尝试将该依赖插入到我的POM中，我都遇到了问题.

My "solution" is incomplete, because I have not been able to work out how to get those dependencies in place. They seem to be part of the cxf-buildtools Maven dependency package... but as the above question documents, I've encountered problems no matter how I try to insert that dependency into my POM.

但是，实际上，我的解决方案是简单地从"shade"插件配置中完全删除这两个转换器.没有它们，我的阴影JAR应用程序可以很好地工作.也许这两个特定的变压器在特殊情况下起作用，但是对于香草CXF服务电话，您似乎可以忽略它们.

However, practically speaking my solution has been to simply remove those two transformers from the "shade" plugin configuration altogether. My shaded JAR application works perfectly fine without them. Perhaps those two specific transformers have a role in special edge cases, but for vanilla CXF service calls it appears that you can omit them.

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