Bean 已注册 - struts2-core 依赖错误

问题描述 投票：0回答：1

我正在尝试将项目迁移到 Maven 并声明 Struts 2 依赖项，但我遇到了这个错误。我已经仔细检查了 

pom.xml
依赖项，确保 
struts2-core
仅声明一次，添加了排除项等。我也尝试过使用和不使用 
xwork-core
依赖，同样的错误。我真的被困住了，不知道如何继续。

我的错误：

15:35:29,079 INFO  [com.opensymphony.xwork2.config.providers.XmlConfigurationProvider] (ServerService Thread Pool -- 72) Parsing configuration file [struts-default.xml]
    15:35:29,124 ERROR [org.apache.struts2.dispatcher.Dispatcher] (ServerService Thread Pool -- 72) Dispatcher initialization failed: Unable to load configuration. - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70) [xwork-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:445) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:489) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:416) [jbossweb-7.2.0.Final-redhat-1.jar:7.2.0.Final-redhat-1]
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3225) [jbossweb-7.2.0.Final-redhat-1.jar:7.2.0.Final-redhat-1]
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:3791) [jbossweb-7.2.0.Final-redhat-1.jar:7.2.0.Final-redhat-1]
        at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156) [jboss-as-web-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60) [jboss-as-web-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93) [jboss-as-web-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [rt.jar:1.6.0_13]
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [rt.jar:1.6.0_13]
        at java.util.concurrent.FutureTask.run(FutureTask.java:138) [rt.jar:1.6.0_13]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_13]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_13]
        at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_13]
        at org.jboss.threads.JBossThread.run(JBossThread.java:122)
    Caused by: Unable to load bean: type: class:com.opensymphony.xwork2.ObjectFactory - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:245) [xwork-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:234) [xwork-core-2.3.16.3.jar:2.3.16.3]
        at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67) [xwork-core-2.3.16.3.jar:2.3.16.3]
        ... 17 more
    Caused by: Bean type class com.opensymphony.xwork2.ObjectFactory with the name struts has already been loaded by bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.3.jar/struts-default.xml:40:72 - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:229) [xwork-core-2.3.16.3.jar:2.3.16.3]
        ... 20 more
    
    15:35:29,134 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/fordaq]] (ServerService Thread Pool -- 72) JBWEB000284: Exception starting filter struts: Unable to load configuration. - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:501) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:416) [jbossweb-7.2.0.Final-redhat-1.jar:7.2.0.Final-redhat-1]
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3225) [jbossweb-7.2.0.Final-redhat-1.jar:7.2.0.Final-redhat-1]
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:3791) [jbossweb-7.2.0.Final-redhat-1.jar:7.2.0.Final-redhat-1]
        at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156) [jboss-as-web-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60) [jboss-as-web-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93) [jboss-as-web-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [rt.jar:1.6.0_13]
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [rt.jar:1.6.0_13]
        at java.util.concurrent.FutureTask.run(FutureTask.java:138) [rt.jar:1.6.0_13]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_13]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_13]
        at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_13]
        at org.jboss.threads.JBossThread.run(JBossThread.java:122)
    Caused by: Unable to load configuration. - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70) [xwork-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:445) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:489) [struts2-core-2.3.16.3.jar:2.3.16.3]
        ... 15 more
    Caused by: Unable to load bean: type: class:com.opensymphony.xwork2.ObjectFactory - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:245) [xwork-core-2.3.16.3.jar:2.3.16.3]
        at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102) [struts2-core-2.3.16.3.jar:2.3.16.3]
        at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:234) [xwork-core-2.3.16.3.jar:2.3.16.3]
        at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67) [xwork-core-2.3.16.3.jar:2.3.16.3]
        ... 17 more
    Caused by: Bean type class com.opensymphony.xwork2.ObjectFactory with the name struts has already been loaded by bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.3.jar/struts-default.xml:40:72 - bean - vfs:/C:/servers/JBoss-eap-6.1/standalone/deployments/war.war/WEB-INF/lib/struts2-core-2.3.16.jar/struts-default.xml:40:72
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:229) [xwork-core-2.3.16.3.jar:2.3.16.3]
        ... 20 more


pom.xml
具有依赖项：

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-json-plugin</artifactId>
    <version>2.3.16</version>
</dependency>

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-spring-plugin</artifactId>
    <version>2.3.16</version>
</dependency>

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-struts1-plugin</artifactId>
    <version>2.3.16</version>
    <exclusions>
        <exclusion>
            <artifactId>struts2-core</artifactId>
            <groupId>org.apache.struts</groupId>
        </exclusion>
    </exclusions>
</dependency>
java spring maven struts2 dependency-management
1个回答
0
投票

首先您需要添加 

struts2-core
工件并测试它是否有效，然后添加 Spring 和/或其他插件。了解如何使用 Maven 创建 Struts 2 Web 应用程序来管理工件并构建应用程序。

核心struts2应用程序的

pom.xml
仅需要

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-core</artifactId>
    <version>X.X.X.X</version>
</dependency>

其中 

X.X.X.X
是具体版本，即 
2.3.16.3
或 
2.3.24.1
， 它将下载所有其他依赖项。使用插件与其他框架集成，并且不会弄乱重复的依赖项。清理、重建、重新部署。检查 
WEB-INF/lib
它不应包含来自不同版本的重复库。在你的情况下 
struts2-core-2.3.16.3.jar
和 
struts2-core-2.3.16.jar
都加载到类路径上。这是错误的，两个不同版本不应该有同一个库。

您还使用其他插件

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-json-plugin</artifactId>
    <version>2.3.16.3</version>
</dependency>

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-spring-plugin</artifactId>
    <version>2.3.16.3</version>
</dependency>

<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-struts1-plugin</artifactId>
    <version>2.3.16.3</version>
</dependency>

可以添加到

pom.xml
。

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