GWT引导延迟绑定失败

在哪里下载GWT-bootstrap.jar的最新稳定版本

我从gwt bootstrap 2.3.2.jar的副本中下载。并创建一个示例项目，但每次都会出现以下错误

Compiling module com.test.Bootstrap
Scanning for additional dependencies:               file:/F:/desk/bootstrap/src/com/test/client/Testing.java
  Computing all possible rebind results for 'com.test.client.Testing.TestingUiBinder'
 Rebinding com.test.client.Testing.TestingUiBinder
    Invoking generator com.google.gwt.uibinder.rebind.UiBinderGenerator
       [ERROR] <b:Heading> missing required attribute(s): size Element <b:Heading> (:4)
   [ERROR] Errors in 'file:/F:/desk/bootstrap/src/com/test/client/Testing.java'
  [ERROR] Line 11:  Failed to resolve 'com.test.client.Testing.TestingUiBinder' via deferred binding
   Scanning for additional dependencies: jar:file:/F:/technology/lib/gwt-2.4.0/gwt-2.4.0/gwt-user.jar!/com/google/gwt/user/client/ui/Composite.java
      [WARN] For the following type(s), generated source was never committed (did you forget to call commit()?)
 [WARN] com.test.client.Testing_TestingUiBinderImpl
   [ERROR] Cannot proceed due to previous errors

Testing.ui.xml

你好，bootstrap
...
...

Testing.java

公共类测试扩展了复合{
私有静态TestingUiBinder=GWT.create（TestingUiBinder.class）；
@UiTemplate（“Testing.ui.xml”）
接口测试绑定器扩展UiBinder{
}
公共测试（）{
initWidget（uiBinder.createAndBindUi（this））；
}
}

看起来大小属性是必需的。在Testing.ui.xml中试试这个

<b:Heading size="2">