GWT的问题2.4 [英] Problems with GWT 2.4
问题描述
我编译了svn的标签为gwt2.4rc的版本。现在有一个
的图书馆比我上一次更多。任何
指令在哪些库上需要什么？我只用
标准库（servlet，servlet-deps，用户）来试用它，但是当发出requestfactory调用时，我得到了
跟踪错误：
java.lang.NoSuchMethodError：
com.google.gwt.core.client.impl.WeakMapping.setWeak（Ljava / lang /
Object; Ljava / lang / String; Ljava / lang / Object ;）
我试图声明requestfactory-client和requestfactory-server
作为依赖关系，但我没有帮助。我正在使用maven来管理
我的依赖项。
我会回到2.4测试版，但我需要稍后介绍
的拖放功能。
有没有人有一个想法可能是错的？或任何提示如何我可以
深入这个？我花了很多时间试图弄清楚
但没有任何成功:(
我需要提供更多信息吗？
问候，
arne
你确定你在war / WEB- INF / lib？另外，请确保您覆盖gwt-maven-plugin的SDK： http://mojo.codehaus.org/gwt-maven-plugin/user-guide/using-different-gwt-sdk-version.html 这就是说：使用Maven时，你不应该使用gwt-b
- servlet-deps，而是引用org.json：json和javax.validation：validation-api
- 如果仅在服务器端使用RequestFactory，则可以使用requestfactory-server而不是gwt-servlet。 （没有GWT-RPC，没有SafeHtml，没有RegExp等）; requestfactory-client用于Java客户端（如Android），而不是e case here。
I compiled the version in svn tagged as gwt2.4rc. Now there are a couple of more libraries than I had the last time. Are the any instructions on which library is needed for what? I tried it with only the standard libraries (servlet, servlet-deps, user) but I get the following error when a requestfactory call is made:
java.lang.NoSuchMethodError: com.google.gwt.core.client.impl.WeakMapping.setWeak(Ljava/lang/ Object;Ljava/lang/String;Ljava/lang/Object;)
I tried declaring the requestfactory-client and requestfactory-server jars as dependencies, but i doesn't help. I am using maven to manage my dependencies. I would go back to 2.4 beta, but I need the drag&drop features that were introduced later. Does anybody has an idea what could be wrong? or any hints how i can dig deeper into this? I spend a lot of time trying to figure this out but without any success :( Do I need to provide more information?
Regards, arne
Are you sure you deployed the 2.4-rc1 gwt-servlet.jar in your war/WEB-INF/lib ? Also, make sure you override the SDK for the gwt-maven-plugin: http://mojo.codehaus.org/gwt-maven-plugin/user-guide/using-different-gwt-sdk-version.html
That being said:
- when using Maven, you shouldn't use gwt-servlet-deps but instead reference org.json:json and javax.validation:validation-api
- requestfactory-server can be used instead of gwt-servlet if you only use RequestFactory on the server-side (no GWT-RPC, no SafeHtml, no RegExp, etc.); requestfactory-client is to be used for Java clients (such as Android), not the case here.
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