showuserlistaction.java

这是《Struts网络编程实例》一书zhogn 的源代码部分

package org.ithinking.strutsExample.Action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.ithinking.strutsExample.entity.Userinfo;
import org.ithinking.strutsExample.service.ServiceFactory;
import org.ithinking.strutsExample.service.UserInfoService;
import org.ithinking.strutsExample.util.SiteContance;

public class ShowUserListAction extends Action {
	 public ActionForward execute(ActionMapping actionMapping,
             ActionForm actionForm,
             HttpServletRequest httpServletRequest,
             HttpServletResponse httpServletResponse) {
		 //如果没有登陆信息，则返回登陆页面
		 if(httpServletRequest.getSession().getAttribute(SiteContance.CURRENT_USER)==null)
		 {
			 return actionMapping.findForward("login");
		 }
		 else
		 {
			 try
			 {
			 UserInfoService userInfoservice=ServiceFactory.getUserinfService();
			 List userInfoList=userInfoservice.getUserInfoList();
			 //添加userlist属性，同jsp页面的中的名字相一致			 
			 httpServletRequest.setAttribute("userlist",userInfoList);
			 return actionMapping.findForward("success");
			 }
			 catch(Exception ex)
			 {
				 ex.printStackTrace();
				 ActionErrors errors = new ActionErrors();
					errors.add(ActionErrors.GLOBAL_ERROR, new ActionError(
							"global.errors.general"));
					saveErrors(httpServletRequest, errors);
					return actionMapping.findForward("error");
			 }
		 }
	 }

}