将GXT 3.1添加到GWT项目时出错

时间：2014-05-02 12:09:59

标签： gwt gxt

我已经创建了一个GWT 2.6项目，我想向它添加GXT。我首先尝试使用3.0.1但后来我发现它存在兼容性问题所以我改为GXT 3.1测试版。

但是当我尝试运行应用程序时，我遇到了这些错误：

enter image description here

我所做的更改是在模块xml中注释掉这一行

<inherits name='com.google.gwt.user.theme.clean.Clean'/>

并添加了以下内容：

  <inherits name='com.sencha.gxt.ui.GXT' />

  <!-- GXT Stylesheet -->
  <stylesheet src="reset.css" />

有人有想法吗？

gwt.xml 

<?xml version="1.0" encoding="UTF-8"?>
<!--
  When updating your version of GWT, you should also update this DTD reference,
  so that your app can take advantage of the latest GWT module capabilities.
-->
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.6.0//EN"
  "http://google-web-toolkit.googlecode.com/svn/tags/2.6.0/distro-source/core/src/gwt-module.dtd">
<module rename-to='comav200'>
  <!-- Inherit the core Web Toolkit stuff.                        -->
  <inherits name='com.google.gwt.user.User'/>

  <!-- Inherit the default GWT style sheet.  You can change       -->
  <!-- the theme of your GWT application by uncommenting          -->
  <!-- any one of the following lines.                            -->
  <!-- <inherits name='com.google.gwt.user.theme.clean.Clean'/> -->
  <!-- <inherits name='com.google.gwt.user.theme.standard.Standard'/> -->
  <!-- <inherits name='com.google.gwt.user.theme.chrome.Chrome'/> -->
   <inherits name='com.google.gwt.user.theme.dark.Dark'/>   

  <inherits name="com.google.gwt.json.JSON" />

  <!-- Other module inherits                                      -->
  <inherits name="com.google.gwt.json.JSON" />
  <inherits name='com.sencha.gxt.ui.GXT' />

  <!-- GXT Stylesheet -->
  <stylesheet src="reset.css" />

  <!-- Specify the app entry point class.                         -->
  <entry-point class='com.coma.client.Main'/>

  <!-- Specify the paths for translatable code                    -->
  <source path='client'/>
  <source path='shared'/>

  <!-- allow Super Dev Mode -->
  <add-linker name="xsiframe"/>
</module>

Jars

堆栈跟踪

maj 02, 2014 7:17:00 EM java.util.prefs.WindowsPreferences <init>
Varning: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
[WARN] Server class 'org.eclipse.jetty.servlet.listener.ELContextCleaner' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/Users/JoHanSolo/Documents/eclipse%20ee/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/gwt-dev.jar' to the web app classpath for this session
   For additional info see: file:/C:/Users/JoHanSolo/Documents/eclipse%20ee/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/doc/helpInfo/webAppClassPath.html
[WARN] 404 - GET /%7Bmodule%20name%7D/reset.css (127.0.0.1) 1394 bytes
   Request headers
      Host: 127.0.0.1:8888
      User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0
      Accept: text/css,*/*;q=0.1
      Accept-Language: en-US,en;q=0.5
      Accept-Encoding: gzip, deflate
      Referer: http://127.0.0.1:8888/Comav200.html?gwt.codesvr=127.0.0.1:9997
      Connection: keep-alive
   Response headers
      Content-Type: text/html;charset=ISO-8859-1
      Cache-Control: must-revalidate,no-cache,no-store
      Content-Length: 1394
Exception in thread "Thread-1" java.lang.NullPointerException
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    at com.google.gwt.core.client.JavaScriptException.getExceptionName0(JavaScriptException.java)
    at com.google.gwt.core.client.JavaScriptException.getExceptionName(JavaScriptException.java:66)
    at com.google.gwt.core.client.JavaScriptException.ensureInit(JavaScriptException.java:203)
    at com.google.gwt.core.client.JavaScriptException.getMessage(JavaScriptException.java:187)
    at com.google.gwt.dev.util.log.AbstractTreeLogger.getStackTraceAsString(AbstractTreeLogger.java:70)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceClient.generateLogData(ViewerServiceClient.java:296)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceClient.addLogEntry(ViewerServiceClient.java:118)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceTreeLogger.sendEntry(ViewerServiceTreeLogger.java:158)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceTreeLogger$PendingLog.send(ViewerServiceTreeLogger.java:72)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceTreeLogger.initLogHandle(ViewerServiceTreeLogger.java:134)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceTreeLogger$1.onDone(ViewerServiceTreeLogger.java:145)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceTreeLogger$1.onDone(ViewerServiceTreeLogger.java:143)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceClient$1.onDone(ViewerServiceClient.java:96)
    at com.google.gwt.dev.shell.remoteui.ViewerServiceClient$1.onDone(ViewerServiceClient.java:94)
    at com.google.gwt.dev.shell.remoteui.MessageTransport$PendingRequest.setResponse(MessageTransport.java:124)
    at com.google.gwt.dev.shell.remoteui.MessageTransport.processServerResponse(MessageTransport.java:428)
    at com.google.gwt.dev.shell.remoteui.MessageTransport.processMessage(MessageTransport.java:404)
    at com.google.gwt.dev.shell.remoteui.MessageTransport.access$400(MessageTransport.java:44)
    at com.google.gwt.dev.shell.remoteui.MessageTransport$3.run(MessageTransport.java:327)
    at java.lang.Thread.run(Unknown Source)

2 个答案:

答案 0 :(得分：0)

请检查您的module-xml文件并添加（如果尚未存在）：

<inherits name='com.google.gwt.user.User' />

答案 1 :(得分：0)

我在gwt.xml

中注意到的一些问题

尝试以下选项

欲了解更多信息，请查看以下链接：

- 编辑 -

首先尝试gwt.xml以下

    ...
<module rename-to='comav200'>
    <inherits name='com.google.gwt.user.User' />

    <inherits name='com.sencha.gxt.ui.GXT' /> 
            <inherits name="com.google.gwt.json.JSON" />

    <stylesheet src="reset.css" /> 
    <entry-point class='com.coma.client.Main' />

    <source path='client' />
    <source path='shared' />    
</module>

GWT 2.5.0对我来说很好。请查看以下屏幕截图中的lib文件夹。

<?xml version="1.0" encoding="UTF-8"?>
<!-- When updating your version of GWT, you should also update this DTD reference, 
    so that your app can take advantage of the latest GWT module capabilities. -->
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.5.0//EN"
  "http://google-web-toolkit.googlecode.com/svn/tags/2.5.0/distro-source/core/src/gwt-module.dtd">
<module rename-to='gxtproject'>
    <inherits name='com.google.gwt.user.User' />

    <inherits name='com.sencha.gxt.ui.GXT' />
    <stylesheet src="reset.css" />
    <entry-point class='com.gxt.client.GXTProject' />

    <source path='client' />
    <source path='shared' />

    <inherits name="com.google.gwt.json.JSON" />

</module>

enter image description here

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