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https://issues.apache.org/jira/browse/FREEMARKER-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17648955#comment-17648955
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Dániel Dékány commented on FREEMARKER-177:
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How do I recreate this issue? I have tried many things. Java 8 and Spring Boot
Starter 2.6.0, 2.7.0, and 2.7.6. Also with Java 11 and 2.7.6. Also Java 17 and
Spring Boot Starter 3.0.0 and Java 17. I have defined a
{{freemarker.template.Configuration}} bean in a {{@Configuration}} class, that
simply creates it with the constructor, and then I get that bean with
{{ApplicationContext.getBean}}. Then I did the same with XML configuration and
2.7.x, and I have even set the {{settings}} property to a {{Properties}} object
in the XML. All the combinations worked.
As a side note, Java's {{BeanIntrospector}} has no problem with that property.
It just says that the {{setting}} property has type {{Map}} (the common
ancestor class of {{Map}} and {{Properties}}), and both a read method, and a
write method. But, that's not the point. I need to make Spring to fail in order
to find the most backward compatible workaround.
> freemarker Configurable has a asymmetric settings get/set which causes spring
> failure
> -------------------------------------------------------------------------------------
>
> Key: FREEMARKER-177
> URL: https://issues.apache.org/jira/browse/FREEMARKER-177
> Project: Apache Freemarker
> Issue Type: Bug
> Affects Versions: 2.3.29
> Reporter: Gray
> Priority: Major
> Attachments: trace.txt
>
>
> When I try to configure freemarker.template.Configuration in spring, it
> throws the exception:
> {{Caused by: org.springframework.beans.FatalBeanException: Failed to obtain
> BeanInfo for class [freemarker.template.Configuration]; nested exception is
> java.beans.IntrospectionException: type mismatch between read and write
> methods}}
> The problem is that setSettings(...) takes a Properties and getSettings()
> returns a Map. The get has been deprecated forever. Can it please be
> fixed? The alternative is having to do some spring hackery.
> See: [https://github.com/apache/freemarker/pull/74]
>
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