struts2在服务器端报错，请大家家帮帮忙

[momobeibei]

在本地eclipse里面可以正常运行，可是放到集成服务器上面编译部署到tomcat之后，调用LoginAction时就会报错：

org.apache.struts2.dispatcher.ServletDispatcherResult cannot be cast to com.opensymphony.xwork2.Result - action - file:/usr/local/tomcat/webapps/agile2012/WEB-INF/classes/struts.xml:30:57
com.opensymphony.xwork2.DefaultActionInvocation.createResult(DefaultActionInvocation.java:224)
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:368)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:278)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)

root cause

java.lang.ClassCastException: org.apache.struts2.dispatcher.ServletDispatcherResult cannot be cast to com.opensymphony.xwork2.Result
com.opensymphony.xwork2.ObjectFactory.buildResult(ObjectFactory.java:228)
com.opensymphony.xwork2.DefaultActionInvocation.createResult(DefaultActionInvocation.java:221)
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:368)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:278)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)

[yuppy]

是不是少什么Jar包了。。。 建议对比下本地和服务器上的 Jar包。。

[fw347969680]

贴下代码吧。。。

[Asher]

struts.xml:30:57

[momobeibei]

今天又debug了半天，终于发现时jdk版本的原因。本地是jdk6，服务器是jdk7，导致类型转化的时候出现异常。jdk7很多方面都比较严格，ssh框架中的annotation机制也被限制了。不知道是要自己设置jdk的约束级别还是就这样一刀切了。。。谢谢大家哈~

[momobeibei]

谢谢大家的回帖，今天起来看了下正常了，很诡异有木有。。。

我想问下java EE运行时用到的jar包有几个地方啊？
jre是一个；WEB-INF下面的lib是一个；Tomcat容器的lib是一个。还有别的么？我按照一楼的对比了下WEB-INF中jar包的数量和版本都是一样的啊，还有需要注意的地方么？

struts.xml:30行就是一个action的定义：
<action name="login" class="action.LoginAction">
<result name="success" >/course/course_list.html</result>
<result name="error">error.jsp</result>
</action>

LoginAction的代码也一并贴一下吧：

package action;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;


import model.Access;
import model.Person;
import model.dao.AccessDAO;
import model.dao.PersonDAO;
import model.dao.PersonRoleDAO;
import model.dao.RoleAccessDAO;
import model.dao._RootDAO;
import model.dao.KeyWordDAO;


import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 1L;

private PersonDAO personDAO;
private PersonRoleDAO personRoleDAO;
private RoleAccessDAO roleAccessDAO;
private AccessDAO accessDAO;
private KeyWordDAO keywordDAO;

private Person person;

private String username;
private String password;
private List<Integer> roleList;
private List<Integer> accessIDList;
private List<Access> accessItemList;
private List<String> accessString;

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

@SuppressWarnings("unchecked")
public String execute(){
_RootDAO.initialize();
personDAO = new PersonDAO();

person = new Person();
person.setName(username);
person.setPassword(password);

person = personDAO.check(person);

if(person!=null){

ActionContext ac=ActionContext.getContext();
Map sess=ac.getSession();
sess.put("uid",person.getId());

roleList = new ArrayList<Integer>();
accessIDList = new ArrayList<Integer>();
accessItemList = new ArrayList<Access>();
accessString = new ArrayList<String>();

personRoleDAO = new PersonRoleDAO();
roleAccessDAO = new RoleAccessDAO();
accessDAO = new AccessDAO();
keywordDAO = new KeyWordDAO();


roleList = personRoleDAO.getRoleByPersonID(person.getId());

for(Integer roleID:roleList)
accessIDList.addAll(roleAccessDAO.getAccessByRoleID(roleID));

for(Integer accessID:accessIDList)
accessItemList.addAll(accessDAO.getAccessByID(accessID));

for(Access accessItem:accessItemList)
{
accessString.add((keywordDAO.get(Integer.valueOf(accessItem.getSource())).getContent())
+(keywordDAO.get(Integer.valueOf(accessItem.getOperation())).getContent()));
}

sess.put("access",accessString);

return SUCCESS;
}
this.addFieldError("password", "invalid username or password");
return ERROR;

}

}
虽然莫名奇妙的可以了，但是还是想知道为什么啊，谢谢各位了！

[wnczwl369]

thanks.了解了。打破了我对高版本jdk的迷信。

[jie2workjava]

又是环境问题。。还是查查包的情况，怀疑冲突