Web应用程序项目中的Eclipse包浏览器错误

Question

I am following a tutorial by Google on "google app engine using java" and trying to make a simple web application. But I am having problem to make a JSP file in the war directory. This is the tutorial page: https://developers.google.com/appengine/docs/java/gettingstarted/usingjsps

I am using eclipse. When I create a new JSP file in the war directory, it causes an error in the package explorar. The error is:"Your project must be configured to use a JDK in order to use JSPs" How can I get rid from this error?

Answer 1

在“ 窗口”“惯用选项”“ Java”“已安装的JRE”中 ，确保已安装JDK，并将其选择为默认JDK。

Answer 2

First thing, go into Window>Preferences>Installed JREs and sellect a JDK's JRE.

Them add this line to eclipse.ini:

-vm C:\Program Files\Java\jdk1.7.0_45\bin\javaw.exe

That line must be in the beginning of the file, before any -vmargs argument, or else Eclipse will crash on start.

Last go into your System's environment variables and add "C:\\Program Files\\Java\\jdk1.7.0_45\\bin" to the PATH variable, before the "%SystemRoot%\\system32" entry.

Those three entries must all point to the same JDK and, of course, must be changed to whatever your JDK's path actually is.

Restart your Eclipse and you should be good to go.