ELException in zk9 importing a class

answered 2019-12-17 16:05:08 +0800

cor3000
6280 ● 2 ● 7

The error you encounter seems related to ZK-4200, where the ImportHandler$NotFound marker class was introduced to cache dynamic class loading failures (avoiding exceptions).

From what I can see it tries to load a class missing the com. package prefix.

I tried several ideas but could not reproduce the sequence leading to this error. Can you please provide a more complete reproducing example?

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answered 2019-12-20 10:58:12 +0800

cor3000
6280 ● 2 ● 7

updated 2020-03-13 15:37:08 +0800

Thanks for your clarifying/reproducing example. The import can only be executed when the included zul file is loaded. So the @load binding in your example is executed before processing the import.

An workaround idea is to pre-import the commonly used classes at application startup.

public class ImportInit implements WebAppInit {
    @Override
    public void init(WebApp wapp) throws Exception {
      ImportHandler.getImportHandler().importClass(MyEnum.class.getName());
      ...
    }
}

And configure this class in zk.xml as a listener-element:

<listener>
    <listener-class>my.package.ImportInit</listener-class>
</listener>

UPDATE: issue ZK-4468

UPDATE 2: fixed in 9.0.1 (since 9.0.1.FL.20200310(-Eval))