代码之家 › 专栏 › 技术社区 › Veera

Struts 2在Google App Engine(Java)上的发布javax.swing.tree.TreeNode是一个受限类

struts2 google-app-engine java

Veera · 技术社区 · 16 年前

我正在尝试使用Struts2框架来实现我的Google应用程序引擎项目。我已经正确地配置了struts框架,并在中创建了一个操作文件格式:

<package name="myproj" namespace="/myproj" extends="struts-default">
  <action name="login">
  <result>/login.jsp</result>
</action>

我正在尝试通过以下方式访问上述操作: http://localhost:8080/myproj/login.action . 但是我没有像预期的那样获得login.jsp页面。相反,我得到以下错误。

HTTP ERROR 500

Problem accessing /myproj/login.action. Reason:

    java.lang.NoClassDefFoundError: javax.swing.tree.TreeNode is a restricted class. Please see the Google  App Engine developer's guide for more details.
Caused by:

javax.servlet.ServletException: java.lang.NoClassDefFoundError: javax.swing.tree.TreeNode is a restricted class. Please see the Google  App Engine developer's guide for more details.
    at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
    at org.apache.jasper.runtime.PageContextImpl.access$1100(PageContextImpl.java:64)
    at org.apache.jasper.runtime.PageContextImpl$12.run(PageContextImpl.java:745)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:743)
    at org.apache.jsp.getin_jsp._jspService(getin_jsp.java:102)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
    at com.google.appengine.tools.development.PrivilegedJspServlet.access$101(PrivilegedJspServlet.java:23)
    at com.google.appengine.tools.development.PrivilegedJspServlet$2.run(PrivilegedJspServlet.java:59)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.google.appengine.tools.development.PrivilegedJspServlet.service(PrivilegedJspServlet.java:57)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)

我是否需要配置一些东西来修复上述错误并使Struts2框架在GoogleAppEngine上工作?

3 回复 | 直到 16 年前

Shekhar 16 年前

你可以按照我的博客教程 http://whyjava.wordpress.com/2009/08/30/creating-struts2-application-on-google-app-engine-gae/ 它包含了你需要的所有信息。

Igor Artamonov 16 年前

我在Appengine集团发现了这个问题: http://groups.google.com/group/google-appengine-java/browse_thread/thread/dd84e44f604498c4

当然,你必须遵循 Will it play on GAE

Lukasz Lenart 11 年前

  <dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-core</artifactId>
    <version>${struts2.version}</version>
    <exclusions>
      <exclusion>
        <artifactId>freemarker</artifactId>
        <groupId>org.freemarker</groupId>
      </exclusion>
    </exclusions>
  </dependency>

  <dependency>
    <groupId>org.freemarker</groupId>
    <artifactId>freemarker-gae</artifactId>
    <version>2.3.22</version>
  </dependency>