问题描述
我有一个Struts2应用程序，该应用程序最初是基于XML的，但是现在我第一次引入了一个基于Annotation的操作，该应用程序在启动时就崩溃了.
I have a Struts2 application, originally XML-based, but now for the first time I introduced an Annotation-based action, and the application broke on startup.
鉴于以下操作映射，在应用程序启动时，我得到了错误
Given the following Action mapping, on startup of the application, I get the error
java.lang.InstantiationError: com.opensymphony.xwork2.util.finder.ClassFinder
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.findActions(PackageBasedActionConfigBuilder.java:390)
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:347)
at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:199)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:906)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:445)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:486)
at org.apache.struts2.dispatcher.InitOperations.initDispatcher(InitOperations.java:75)
at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:63)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
这里有一个类似的问题，但是没有人回答，问题出现Struts2过滤器异常
There was a similar question here, but no one responded,Issue with Struts2 Filter Exception
已使用的库:
- struts2-convention-plugin-2.3.14.3.jar
- struts2-core-2.5.10.1.jar
- struts2-json-plugin-2.5.10.1.jar
- struts2-spring-plugin-2.5.10.1.jar
- struts2-tiles-plugin-2.5.10.1.jar
- xwork-core-2.1.6.jar
更新:我认为Convention-Plugin-JAR 2.3.14.3与其他2.5.10.1版本不兼容，所以我下载了struts2-convention-plugin-2.5.10.1.jar
Update: I thought the Convention-Plugin-JAR 2.3.14.3 was incompatible with the other 2.5.10.1 ones, so I downloaded: struts2-convention-plugin-2.5.10.1.jar
现在开始启动
java.lang.IncompatibleClassChangeError: org/apache/struts2/convention/DefaultClassFinder$InfoBuildingVisitor
at org.apache.struts2.convention.DefaultClassFinder.readClassDef(DefaultClassFinder.java:459) ~[struts2-convention-plugin-2.5.10.1.jar:2.5.10.1]
at org.apache.struts2.convention.DefaultClassFinder.<init>(DefaultClassFinder.java:90) [struts2-convention-plugin-2.5.10.1.jar:2.5.10.1]
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildClassFinder(PackageBasedActionConfigBuilder.java:397) [struts2-convention-plugin-2.5.10.1.jar:2.5.10.1]
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.findActions(PackageBasedActionConfigBuilder.java:379) [struts2-convention-plugin-2.5.10.1.jar:2.5.10.1]
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:335) [struts2-convention-plugin-2.5.10.1.jar:2.5.10.1]
at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53) [struts2-convention-plugin-2.5.10.1.jar:2.5.10.1]
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:199) [struts2-core-2.5.10.1.jar:2.5.10.1]
解决方案解决方案是添加ASM 5.x JAR，它是Struts-Convention JAR的批注依赖项.我们正在使用ASM 3.3.我添加了ASM-Core，-Common，-Tree版本5.1 JAR.
推荐答案
struts2-convention插件2.5.10.1具有编译依赖性
struts2-convention plugin 2.5.10.1 has compile dependencies
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm</artifactId>
<version>5.1</version>
</dependency>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm-commons</artifactId>
<version>5.1</version>
</dependency>
注意:如果不需要asm和asm-commons依赖项，则可以降级到Struts 2.5.5.
Note: if you don't need asm and asm-commons dependencies you can downgrade to Struts 2.5.5.
这篇关于启动错误:java.lang.IncompatibleClassChangeError:org/apache/struts2/convention/DefaultClassFinder $ InfoBuildingVisitor的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！