GWT（2.7）在GWTP（1.5.1）项目中的UiBinder中声明GwtQuery（1.0.6）Widget时编译失败

问题描述

当我在我的GWTP项目的MyView.ui.xml UiBinder中声明一个GwtQuery DragAndDropCellTree时，我不能GWT编译它：

  [3] xmlns：gq =urn：import：gwtquery.plugins.droppable.client.gwt
 ... 
 [59]< gq：DragAndDropCellTree>< / gq ：DragAndDropCellTree> 
  

我遵循在Eclipse中使用Maven。
我不知道我的问题在于GWT，GWTP，Maven还是GwtQuery

任何想法我做错了什么？

• 如果没有声明，但在UiBinder中导入gwtquery.plugins.droppable.client.gwt，我可以成功编译


• 我可以在MyView.java而不是UiBinder中声明时成功编译
  
• 在声明任何其他DragAndDrop时无法编译，也不能在声明时一个用于不同的UiBinder

解决方案

我认为我想到了这一点。
。

When I simply just declare a GwtQuery DragAndDropCellTree in my MyView.ui.xml UiBinder in my GWTP project, I cannot GWT Compile it:

[3]  xmlns:gq="urn:import:gwtquery.plugins.droppable.client.gwt"
...
[59]       <gq:DragAndDropCellTree></gq:DragAndDropCellTree>

I followed GwtQuery Configuration using Maven in Eclipse.I'm not sure if my problem lies in GWT, GWTP, Maven, or GwtQuery

Any ideas what I am doing wrong?

• Without the declaration, but with the import in the UiBinder of gwtquery.plugins.droppable.client.gwt, I can successfully compile
• I can successfully compile when making the declaration in MyView.java instead of UiBinder
• I cannot compile when declaring any other DragAndDrop either, nor when declaring one in a different UiBinder

解决方案

I think I figured this one out.Any Widget used in UiBinder must have a zero-arg constructor...

DragAndDropCellTree does not have a zero-arg constructor. So it makes sense that I could declare in MyView.java but not MyView.ui.xml.

So this was a GWT <-> GwtQuery problem.

These are alternatives to still use UiBinder.

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