启动错误:java.lang.IncompatibleClassChangeError:org/apache/struts2/convention/DefaultClassFinder$InfoBuildingVisitor [英] Startup Error: java.lang.IncompatibleClassChangeError: org/apache/struts2/convention/DefaultClassFinder$InfoBuildingVisitor

问题描述

我有一个 Struts2 应用程序，最初是基于 XML 的，但现在我第一次引入了基于 Annotation 的操作，并且该应用程序在启动时中断.

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.

鉴于以下动作映射，在应用程序启动时，我收到错误

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，但没有人回答，Struts2 过滤器异常问题

There was a similar question here, but no one responded, Issue with Struts2 Filter Exception

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 不兼容，所以我下载了:struts2-convention-plugin-2.5.10.1.罐子

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

现在正在启动

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 该解决方案是添加 ASM 5.x JAR，它是 Struts-Convention JAR 用于注释的依赖项.我们使用的是 ASM 3.3.我添加了 ASM-Core、-Common、-Tree 5.1 版 JAR.

推荐答案

struts2-convention plugin 2.5.10.1 有编译依赖

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>

<小时>

注意:如果您不需要 asm 和 asm-commons 依赖项，您可以降级到 Struts 2.5.5.

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Note: if you don't need asm and asm-commons dependencies you can downgrade to Struts 2.5.5.

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