GWT与JPA [英] GWT with JPA

问题描述

我试图使用GWT 1.5.3构建数据库应用程序。我用我的对象使用JPA注释。它似乎在托管模式GWT的RPC工作正常。但是，当我尝试使用GWT编译器编译我的应用程序时，出现如下错误：导入的javax.persistence无法解析，实体无法解析为某种类型。 toplink-essentials.jar已经包含在我的项目路径中。我还需要什么设置来解决这个问题？

I'm trying to build database application using GWT 1.5.3. I use JPA annotations with my objects. It seems in hosted mode GWT's RPC works fine. But when I try to compile my app using GWT-compiler I get errors like: "The import javax.persistence cannot be resolved", "Entity cannot be resolved to a type". toplink-essentials.jar is already included in my project path. What settings else do I need to solve this problem?

推荐答案

好的，我发现我错过了。我需要将mypa-annotations-source.jar包含在我的GWT编译器路径中的myapp-compile.cmd脚本中（或者在ant构建文件中）。顺便说一下，任何人都可以告诉我这个jpa-annotations-source.jar文件的来源吗？

Ok, I've found what I was missing. I needed to include jpa-annotations-source.jar in my GWT-compiler path in myapp-compile.cmd script (or in ant build file). By the way can anyone tell me the origin of this jpa-annotations-source.jar file?

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