英文:
Tomcat 8 to Tomcat 9 upgrade and String[]
问题
我们有一个使用Java Struts框架构建的传统应用程序。它在Tomcat 8上运行得非常好，但由于某种原因，我们现在需要迁移到Tomcat 9。但是，当我们将同样的应用程序部署到Tomcat 9时，表单数据没有带上那些类型为String[]的表单字段，这些值都变成了null。
一个场景是： 我们有一个屏幕，用户可以使用复选框选择多个值，每个复选框在选中时都有一个特定的附加id，但是在将此代码部署到Tomcat 9时，复选框的值变为null。
请问有什么建议吗？
英文:
We have a legacy application build in Java Struts framework. it's working absolutely fine up till tomcat 8 now for some reason we are supposed to move to Tomcat 9 but when we are deploying the same application to tomcat-9, form data is not bringing the form fields which are of type String[]. we are having null for these values.
one scenario is: we have a screen where user can select multiple values using checkbox every checkbox has a specific id attached when selected but when deploying this code to tomcat-9 its bring checkbox value as null.
any advice, please.
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