No source code is available for type javax.validation.ConstraintViolation; did you forget to inh

在你的xxx.gwt.xml文件中添加如下内容

<inherits name="javax.validation.Validation"/>

 

添加一下包validation-api-1.0.0.GA.jar and validation-api-1.0.0.GA-sources.jar

 

http://grepcode.com/snapshot/repo1.maven.org/maven2/javax.validation/validation-api/1.0.0.GA

1. copy your validation-api-1.0.0.GA.jar and validation-api-1.0.0.GA-sources.jar into the gwt-dependencies directory.

2. remove all VAADIN_DOWNLOAD variables from your classpath.

3. Add the following variables to the project's build path with the following entries: gwt-dev.jar, gwt-user.jar,validation-api-1.0.0.GA.jar AND validation-api-1.0.0.GA-sources.jar.

4. Compile widgetset

5. Enjoy life