Action 中返回ActionMessages

最新推荐文章于 2021-02-16 15:32:39 发布

原创最新推荐文章于 2021-02-16 15:32:39 发布 · 2.9k 阅读

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#action #import #variables #iterator #redirect #path

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本文介绍了一个基于Struts框架的登录验证Action实现，该Action通过Hibernate进行数据库查询来验证用户名及密码是否正确，并根据验证结果转向不同的页面。

package com.sincole.struts.action;

import java.util.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.*;
import org.apache.struts.validator.DynaValidatorForm;
import com.sincole.hibernate.*;
/**
* Creation date: 03-08-2006
*
* XDoclet definition:
* @struts.action path="/login" name="loginForm" input="/form/login.jsp" scope="request" validate="true"
* @struts.action-forward name="success" path="/mainFrame.jsp" redirect="true"
* @struts.action-forward name="failure" path="/login.jsp"
*/
public class LoginAction extends Action {

// --------------------------------------------------------- Instance Variables

// --------------------------------------------------------- Methods

/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(
  ActionMapping mapping,
  ActionForm form,
  HttpServletRequest request,
  HttpServletResponse response) {
  DynaValidatorForm loginForm = (DynaValidatorForm) form;
  String UserName = loginForm.getString("username");
  String Password = loginForm.getString("password");
  //TUser user;
  HDao dao = new HDao();
  List list= dao.find("from TUser where username='" + UserName + "' and password=" + Password);
  Iterator ite = list.iterator();
  if(ite.hasNext())
      return mapping.findForward("success");
  else{
   ActionMessages msgs = new ActionMessages();
   ActionMessage msg = new ActionMessage("errors.loginfailed");
   msgs.add("loginfailed",msg);
      saveErrors(request,msgs);
   return mapping.findForward("failure");
  }
}
}

struts 1.2.8 中：
ActionErrors 被　ActionMessages 代替　，ActionError 相应被 ActionMessage 代替
最后使用 saveErrors(HttpServletRequest ,ActionMessages) 方法保存