loginaction.java

来自「一个基本的图书馆管理系统」· Java 代码 · 共 76 行

package c18.struts.action;

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

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

import c18.service.UserService;
import c18.service.UserServiceImpl;
import c18.struts.action.exception.ActionException;
import c18.struts.action.exception.InvalidPasswordActionException;
import c18.struts.action.exception.NotFindActionException;
import c18.struts.form.LoginForm;

/** 
 * 
 * 登陆Action类
 * @struts.action path="/login" name="loginForm" input="/login.jsp" scope="request" validate="true"
 * @struts.action-forward name="success" path="/main.jsp"
 * @struts.action-forward name="failure" path="/login.jsp"
 */
public class LoginAction extends Action {
	/**
	 * 日志操作对象
	 */
    private static final Log log = LogFactory.getLog(LoginAction.class);
	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		//转化Form为LoginForm对象
		LoginForm loginForm = (LoginForm) form;
		//得到登陆账号与密码
		String loginName = loginForm.getLloginName();
		String password = loginForm.getLpassword();
		//得到当前页面路径
		String reqpage = request.getParameter("pagename");
		
		ActionForward actionforward = mapping.findForward(reqpage);
		
		try {
			UserService userservice = new UserServiceImpl(); 
			//登陆
			userservice.login(loginName, password, request, response);
		} catch (ActionException e) {
			//用户账号不存在情况下所进行的操作
			if(e instanceof NotFindActionException){
				request.setAttribute("loginerrorString", e.getExceptionString());
				
				log.debug(e.getExceptionString(), e);
				return actionforward;
			}
			//密码不正确情况下所进行的操作
			else if(e instanceof InvalidPasswordActionException){
				request.setAttribute("loginerrorString", e.getExceptionString());
				
				log.debug(e.getExceptionString(), e);
				return actionforward;
			}
			log.error(e);
		}
		return actionforward;
	}
}