一个action类

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.test.service.UserService;

public class ListUserAction extends ActionSupport

{

 private UserService service;

 public UserService getService()

 {

  return service;

 }

 public void setService(UserService service)

 {

  this.service = service;

 }

 @SuppressWarnings("unchecked")

 @Override

 public String execute() throws Exception

 {

  Map request = (Map) ActionContext.getContext().get("request");

  request.put("list", service.findAll());

  return SUCCESS;

 }

}