Apache轴记录-在Jira插件中使用它时发生ClassCastException [英] Apache axis logging - ClassCastException while using it inside a Jira plugin

问题描述

我的Jira 5.0插件已损坏，但有以下例外:

My Jira 5.0 plugin is broken with the following exception:

java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        ...
Caused by: java.lang.ExceptionInInitializerError
    at org.apache.axis.description.OperationDesc.<clinit>(OperationDesc.java:65)
    at com.xyz.germander.AddTestTrackLinkDialogAction.doConfirm(AddTestTrackLinkDialogAction.java:23)
    ... 148 more
Caused by: java.lang.ClassCastException: org.apache.commons.logging.impl.SLF4JLogFactory cannot be cast to org.apache.commons.logging.LogFactory
    at org.apache.axis.components.logger.LogFactory.getLogFactory(LogFactory.java:41)
    at org.apache.axis.components.logger.LogFactory.<clinit>(LogFactory.java:33)
    ... 150 more

作为参考，这是引发ClassCastException的方法:

For reference, this is the method throwing the ClassCastException:

private static final org.apache.commons.logging.LogFactory getLogFactory() {
    return (org.apache.commons.logging.LogFactory)
        AccessController.doPrivileged(
            new PrivilegedAction() {
                public Object run() {
                    return DiscoverSingleton.find(org.apache.commons.logging.LogFactory.class,
                                   org.apache.commons.logging.LogFactory.FACTORY_PROPERTIES,
                                   org.apache.commons.logging.LogFactory.FACTORY_DEFAULT);
                }
            });
}

...作为进一步参考，org.apache.commons.logging.LogFactory.FACTORY_DEFAULT是"org.apache.commons.logging.impl.LogFactoryImpl"，而FACTORY_PROPERTIES应该是要搜索的属性文件的名称为此，在我的org.apache.commons.logging jar中是"commons-logging.properties".

... for further reference, org.apache.commons.logging.LogFactory.FACTORY_DEFAULT is "org.apache.commons.logging.impl.LogFactoryImpl", and FACTORY_PROPERTIES is supposed to be the name of the properties file to search for, which in my org.apache.commons.logging jar is "commons-logging.properties".

我尝试在插件的资源目录中创建commons-logging.properties文件；该文件包含以下内容:

I've tried creating a commons-logging.properties file in the resource dir of the plugin; that file contains this:

priority=1
org.apache.commons.logging.Log=org.apache.commons.logging.impl.LogFactoryImpl

...但是它似乎被忽略了，因为getLogFactory()仍然获取SLF4JLogFactory并且无法强制转换.因此，它看起来像:

... but it seems to get ignored since getLogFactory() still gets SLF4JLogFactory and fails to cast it. So it looks like:

• 此commons-logging.properties文件需要放在其他位置
• 我需要将日志记录类设置为其他类型
• 该项目的配置不正确，可能是在Jira级别或在插件上，或者是在Maven或...我什至不知道

我很困惑，不胜感激.

I'm pretty stumped, and would appreciate any guidance.

在此处，不同之处在于发帖人从org.apache.axis.attachments.AttachmentsImpl而不是org.apache.axis.description.OperationDesc的初始化中在getLogFactory中得到了相同的异常. (也是Confluence插件，不是Jira.)但是，没有人对此做出回应.

There is a similar question here, except that poster was getting the same exception in getLogFactory from the initialization of org.apache.axis.attachments.AttachmentsImpl instead of org.apache.axis.description.OperationDesc. (Also a Confluence plugin, not Jira.) Nobody responded there, though.

推荐答案

发现:Atlassian分叉了轴库，而Jira现在使用的是axis-1.3-atlassian-1，而不是Apache的最新的axis-1.4. axis-1.3-atlassian-1使用commons-logging的1.0.4版本，而不是像axis-1.4那样的1.1.1版本.

Discoveries: Atlassian forked the axis library and Jira now uses axis-1.3-atlassian-1 and not the latest axis-1.4 from Apache; axis-1.3-atlassian-1 uses the 1.0.4 version of commons-logging, not 1.1.1 like axis-1.4.

将插件的依赖性从axis-1.4更改为axis-1.3-atlassian-1可以解决此问题.我怀疑SLF4JLogFactory可以在1.0.4中转换为org.apache.commons.logging.LogFactory，但不能在1.1.1中转换，但我尚未对其进行测试.

Changing the dependency of the plugin from axis-1.4 to axis-1.3-atlassian-1 solved the problem. It is my suspicion that SLF4JLogFactory could cast to org.apache.commons.logging.LogFactory in 1.0.4 but not 1.1.1, but I haven't tested it.

如果在Jira中，请确保将依赖项的范围设置为提供"，否则由于将内容加载两次而会遇到问题.这是pom片段:

If in Jira, be sure to give the scope of the dependency as "provided" or you'll run in to problems due to stuff being loaded twice. Here's a pom snippet:

    <dependency>
        <groupId>axis</groupId>
        <artifactId>axis</artifactId>
        <version>1.3-atlassian-1</version>
        <scope>provided</scope>
    </dependency>

这篇关于Apache轴记录-在Jira插件中使用它时发生ClassCastException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IT屋！