GAE上使用Struts2

Google App Engine for Java

这里看GAE支持的java框架/技术/语言 列表

https://groups.google.com/group/google-appengine-java/web/will-it-play-in-app-engine

然后是让Struts2运行在gae上的方法

这里有2个相关资料

https://groups.google.com/group/google-appengine-java/browse_thread/thread/19018b0317f27817/ec19c458bb15413b?lnk=gst&q=struts2#ec19c458bb15413b

http://www.nabble.com/Google-App-Engine-support--td22972179.html

只看下文也可以

使用Struts2时候报异常

WARNING: Caught OgnlException while setting property 'location' on type 
'org.apache.struts2.dispatcher.ServletDispatcherResult'. 
java.lang.IllegalAccessException: Method [public void 
org.apache.struts2.dispatcher.StrutsResultSupport.setLocation(java.lang.Str­ing)] 
cannot be accessed. 
   at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:508) 
   at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:812)

SEVERE: ParametersInterceptor - [setParameters]: Unexpected Exception 
caught setting 'name' on 'class com.ociweb.gaestruts2.HelloAction: Error 
setting expression 'name' with value '[Ljava.lang.String;@24de7d'

解决方法:

1. 建class如下

package com.jun.util.listener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import ognl.OgnlRuntime;
/**
 * 为了让Struts2能在AppEngine上运行，因此要在web.xml中添加这个监听 **
 */
public class InitListener implements ServletContextListener,
  HttpSessionListener, HttpSessionAttributeListener {
 public InitListener() {
 }
 public void contextInitialized(ServletContextEvent sce) {
  OgnlRuntime.setSecurityManager(null);
 }
 public void contextDestroyed(ServletContextEvent arg0) {
  // TODO Auto-generated method stub
 }
 public void sessionCreated(HttpSessionEvent arg0) {
  // TODO Auto-generated method stub
 }
 public void sessionDestroyed(HttpSessionEvent arg0) {
  // TODO Auto-generated method stub
 }
 public void attributeAdded(HttpSessionBindingEvent arg0) {
  // TODO Auto-generated method stub
 }
 public void attributeRemoved(HttpSessionBindingEvent arg0) {
  // TODO Auto-generated method stub
 }
 public void attributeReplaced(HttpSessionBindingEvent arg0) {
  // TODO Auto-generated method stub
 }
}

2.web.xm配置监听器

<listener>
         <listener-class>com.jun.util.listener.InitListener</listener-class> 
</listener> 

此时再运行你的struts2项目就行了