loginaction.java

一个基于Java的新闻发布系统

package com.hope.itissue.sys_info.action;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.DynaValidatorForm;

import com.hope.common.exception.BaseException;
import com.hope.common.util.db.DBConfig;
import com.hope.itissue.sys_info.dao.LoginDAO;
import com.hope.itissue.sys_info.dao.DAOFactory;
import com.hope.itissue.sys_info.bean.UserDTO;
import com.hope.itissue.shared.BaseAction;

public class LoginAction extends BaseAction {
    Log log = LogFactory.getLog(LoginAction.class);
    public ActionForward dologin(ActionMapping mapping, ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response) throws
        BaseException {

        String name = (String)request.getParameter("name");
        String password = (String)request.getParameter("password");

        LoginDAO loginDAO = (LoginDAO) DAOFactory.getDAOFactory(
            DBConfig.getDataBaseName()).getLoginDAO();
        UserDTO userDTO = loginDAO.getLoginDTO(name, password);
        if (userDTO == null) {
            //用户名或密码错误。
            log.error("error.LoginAction.login");
            throw new BaseException("error.LoginAction.login");
        } else {
            int id = Integer.parseInt(userDTO.getID());
            HttpSession session = request.getSession();
            session.setAttribute("userDTO", userDTO);
            return mapping.findForward("main");
        }

    }

    public ActionForward chgpass(ActionMapping mapping, ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response) throws
        BaseException {
        //判断session是否有效
        if (!this.isValid(request)) {
            this.setSysMessage(request, "error.session.invalid",
                               "btn.value.relogin", "index.do");
            return mapping.findForward("error");
        }

        String password = (String)request.getParameter("oldpwd");
        String pwd1 = (String)request.getParameter("newpwd1");
        String pwd2 = (String)request.getParameter("newpwd2");


        LoginDAO loginDAO = (LoginDAO) DAOFactory.getDAOFactory(
            DBConfig.getDataBaseName()).getLoginDAO();

        if (!loginDAO.ifTruePass(password)) {
            throw new BaseException("error.chgpwdLoginDAO.oldpass");//原密码输入不正确
        }
        if (!pwd1.equals(pwd2)) {
            System.out.println("error.chpwdAction.chpwd");
            throw new BaseException("error.chpwdAction.chpwd");//两次输入的密码不一致
        }

        loginDAO.chgPassword(pwd1);
        throw new BaseException("error.chgpwdLoginDAO.chgpassok");//密码修改成功
    }


    public ActionForward exit(ActionMapping mapping, ActionForm form,
                              HttpServletRequest request,
                              HttpServletResponse response) throws
        BaseException {
        //获取session对象，删除session中的登录用户信息
        HttpSession session = request.getSession(false);
        session.removeAttribute("userDTO");
        //并设置session为无效
        session.invalidate();
        this.saveToken(request);
        return mapping.findForward("exit");
    }


    /**
     * 定义LoginAction默认执行的方法，本方法定义在不传参数的情况下，方法执行login方法；
     */
    protected ActionForward unspecified(ActionMapping mapping, ActionForm form,
                                        HttpServletRequest request,
                                        HttpServletResponse response) throws
        Exception {
        return this.dologin(mapping, form, request, response);
    }

}