我在使用Jahia时遇到了一些麻烦。我想要的是让客户端在我移动Jahia节点时向我显示一个验证弹出窗口。

首先，由于Drools规则，我抓住了移动节点的动作。我可以从then执行操作。 在此操作中，我想打开一个弹出窗口，因此我使用了一个扩展Window的类（来自extjs）。

public class DialogBox extends action implements Backgroundaction {

    private transient static Logger LOGGER = LoggerFactory.getLogger(DialogBox.class);

    @Override
    public void executeBackgroundaction(JCRNodeWrapper jcrNodeWrapper) {
        LOGGER.info("I'm in BackgroundExecution");
        new MoveItemWindow().start();
    }
}

import com.extjs.gxt.ui.client.widget.Window;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MoveItemWindow extends Window {

    private transient static Logger LOGGER =LoggerFactory.getLogger(MoveItemWindow.class);

    void start() {
        LOGGER.info("I'm in MoveItemWindow");
    }
}

这是我收到的错误日志：

2019-11-04 10:10:34,481: INFO  [DialogBox] - I'm in BackgroundExecution
2019-11-04 10:10:34,482: ERROR [JahiaRPC] - An error occurred calling the GWT 
service method public abstract void org.jahia.ajax.gwt.client.service.content.
JahiaContentManagementService.moveonTopOf(java.util.List,java.lang.String) throws 
org.jahia.ajax.gwt.client.service.GWTJahiaServiceException. Cause: 
com.extjs.gxt.ui.client.widget.Window
java.lang.NoClassDefFoundError: com.extjs.gxt.ui.client.widget.Window
    at com.<my-project>.action.DialogBox.executeBackgroundaction
(DialogBox.java:36)
    [...]
2019-11-04 10:10:34,483: ERROR [GWTController] - An error occurred 
calling the GWT service method public abstract void 
org.jahia.ajax.gwt.client.service.content.JahiaContentManagementService.
moveonTopOf(java.util.List,java.lang.String) throws 
org.jahia.ajax.gwt.client.service.GWTJahiaServiceException. Cause: 
Service method 'public abstract void 
org.jahia.ajax.gwt.client.service.content.JahiaContentManagementService.
moveonTopOf(java.util.List,java.lang.String) throws 
org.jahia.ajax.gwt.client.service.GWTJahiaServiceException' threw an 
unexpected exception: java.lang.NoClassDefFoundError: 
com.extjs.gxt.ui.client.widget.Window
com.google.gwt.user.server.rpc.UnexpectedException: Service method 
'public abstract void 
org.jahia.ajax.gwt.client.service.content.JahiaContentManagementService.
moveonTopOf(java.util.List,java.lang.String) throws 
org.jahia.ajax.gwt.client.service.GWTJahiaServiceException' threw an 
unexpected exception: java.lang.NoClassDefFoundError: 
com.extjs.gxt.ui.client.widget.Window
    [...]

删除extends Window类的MoveItemWindow时，它可以正常工作。 查看日志：

2019-11-04 10:36:34,898: INFO  [DialogBox] - I'm in BackgroundExecution
2019-11-04 10:36:34,899: INFO  [MoveItemWindow] - I'm in MoveItemWindow
2019-11-04 10:36:34,900: INFO  [RulesListener] - Rules executed for 
default ... and 1 other nodes in 7ms

我不太了解GWT的工作方式，它提示了我的问题的关键（但也许我弄错了）。如果有人有任何想法或建议，我在听:)

预先感谢