.jsp文件不适用于Google App Engine留言板教程 [英] .jsp file not working for Google App Engine guestbook tutorial

问题描述

我一直在关注Google App Engine教程，而且.jsp文件有问题。以下是Google的代码：使用JSP 。我正在使用Eclipse构建我的项目，并且由于某种原因，当我将 guestbook.jsp 文件添加到war目录中时，它立即获取一个红色的错误图标。我也不能双击打开guestbook.jsp。这里可能发生什么？

I've been following the Google App Engine tutorials, and I'm having a problem with the .jsp file. Here is the code from Google: Using JSPs. I'm using Eclipse to build my project, and for some reason when I add the guestbook.jsp file to the war directory, it instantly gets a red error icon. I can't double click to open guestbook.jsp either. What could be going on here?

推荐答案

最后，我似乎已经浪费了我的赏金，因为我自己找到了解决方案（有一点帮助）。

In the end I seem to have wasted my bounty as I found the solution (with a little help) myself.

问题出现因为我不熟悉Eclipse。当我发现更详细的错误消息您的项目必须配置为使用JDK才能使用JSPs guestbook.jsp 。
它位于Eclipse窗口底部的窗格中，名为Markers标签。

似乎Eclipse没有意识到我已经安装JDK。

The problem arose because I was unfamiliar with Eclipse. When I found the more verbose error message Your project must be configured to use a JDK in order to use JSPs guestbook.jsp. It was located in a tab called 'Markers' in pane found at the bottom of the Eclipse window. It seems that Eclipse wasn't aware that I had installed the JDK.

在Eclipse中，我进入菜单 Window-> Preferences-> Java->已安装的JRE 。 Eclipse只有一个条目名为 jre6 我点击了添加... 按钮选择标准VM 并浏览到jdk的基本目录（在我的情况下 C：\Program Files\Java\jdk1.6.0_20 ）

In Eclipse I went to menu Window->Preferences->Java->Installed JREs . Eclipse had only one entry there named jre6 I clicked the Add... button Chose Standard VM and browsed to the base directory of the jdk (in my case C:\Program Files\Java\jdk1.6.0_20)

我重建了我的项目，但同样的错误在那里。我忘了检查一下告诉Eclipse使用jdk而不是jre的方框。

I rebuilt my project but the same error was there. I had forgotten to check the box that tells Eclipse to use the jdk instead of the jre.

As很快，就像Eclipse那样重建我的项目，错误消失了。

As soon as I did that Eclipse rebuilt my project and the error was gone.

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