loginbean.java

HR系统模拟企业对内部职员的管理

/*$Id: LoginBean.java,v 1.1 2008/07/15 03:38:22 liqi Exp $
 *--------------------------------------
 * Apusic (Kingdee Middleware)
 *---------------------------------------
 * Copyright By Apusic ,All right Reserved
 * author   date   comment
 * chenhongxin  2008-4-14  Created
*/
package org.operamasks.example.ejb.hr.litebean;

import java.awt.Graphics;
import java.util.List;
import java.util.Map;

import javax.faces.context.FacesContext;

import org.operamasks.example.ejb.hr.constants.IUserConstants;
import org.operamasks.example.ejb.hr.entity.User;
import org.operamasks.example.ejb.hr.service.ServiceBean;
import org.operamasks.example.ejb.hr.util.Util;
import org.operamasks.faces.annotation.Action;
import org.operamasks.faces.annotation.BeforeRender;
import org.operamasks.faces.annotation.Bind;
import org.operamasks.faces.annotation.LocalString;
import org.operamasks.faces.annotation.ManagedBean;
import org.operamasks.faces.annotation.ManagedBeanScope;
import org.operamasks.faces.annotation.ManagedProperty;
import org.operamasks.faces.annotation.Required;
import org.operamasks.faces.component.widget.UIDrawImage;

/**
 * 登陆页面托管Bean
 * @author chenhongxin
 */
@ManagedBean(name="loginBean", scope=ManagedBeanScope.REQUEST)
public class LoginBean {
	
	/**
	 * 注入服务提供Bean，该Bean提供各种的业务操作对象
	 */
	@ManagedProperty("#{serviceBean}")
	private ServiceBean service;
	
	/**
	 * 国际化资源串
	 */
	@LocalString
	private Map<String, String> messages;
	
	/**
	 * 登陆名称
	 */
	@Required(message = "#{this.messages.nameIsRequired}")
	@Bind(id="name", attribute="value")
	private String name;
	
	/**
	 * 登陆密码
	 */
	@Required(message = "#{this.messages.pwdIsRequired}")
	@Bind(id="password", attribute="value")
	private String password;
	
	/**
	 * 验证码
	 */
	@Required(message = "#{this.messages.validateCodeIsRequired}")
	@Bind(id="validateCode", attribute="value")
	private String validateCode;
	
	/**
	 * 登陆提示
	 */
	@Bind(id = "tips", attribute = "value")
	private String tips;
	
	/**
	 * 页面脚本回调
	 */
	@Bind(id="scripter", attribute="script")
	private String scripter;
	
	@BeforeRender
	void beforeRender(boolean isPostback) {
		if(!isPostback) {
			createValidateCode();
		}
	}
	
	/**
	 * 创建验证码
	 */
	private void createValidateCode() {
		Map<String, Object> session = FacesContext.getCurrentInstance().getExternalContext().getSessionMap();
		String randCode = Util.getRandom(4);
		session.put(IUserConstants.LOGIN_VALIDATE_CODE, randCode);
	}
	
	/**
	 * 页面DrawImage组件draw属性绑定的绘图操作函数
	 * @param g Graphics
	 * @param width 图片宽度
	 * @param height 图片高度
	 */
	public void draw(Graphics g, int width, int height) {
		Map<String, Object> session = FacesContext.getCurrentInstance().getExternalContext().getSessionMap();
		String randomCode = (String)session.get(IUserConstants.LOGIN_VALIDATE_CODE);
		
		if (randomCode != null) {
			Util.drawRandomPicture(g, width, height, randomCode);
		}
	}
	
	@Bind(id="validateImg", attribute="binding")
	private UIDrawImage validateImg;
	
	/**
	 * 绑定页面id为validateImg的DrawImage组件的onclick事件，
	 * 实现验证码图片重新刷新
	 */
	@Action(id="validateImg", event="onclick", immediate=true)
	public void change() {
		createValidateCode();
		validateImg.refresh();
	}

	/**
	 * 绑定页面的id为loginBtn的Button组件的点击事件，
	 * 进行登陆验证
	 */
	@Action(id="loginBtn")
	public void loginBtn() {
		Map<String, Object> session = FacesContext.getCurrentInstance().getExternalContext().getSessionMap();
		String randomCode = (String)session.get(IUserConstants.LOGIN_VALIDATE_CODE);
		if(!randomCode.equals(validateCode)) {
			//获得验证码错误提示信息的国际化资源串
			tips = messages.get("LoginBean.tips.validateCodeWrong");
			return;
		}
		
		List<User> users = service.getUserService().findUserByName(name);
		for(User user : users) {
			String password = user.getPassword();
			if(password == null || password.equals(this.password)) {
				//如果密码为空或者密码匹配则使用js脚本回调执行转向
				session.put(IUserConstants.USER_BEAN, user);
				scripter = "location.href='module/index.faces';";
				return;
			}
		}
		//获得用户不存在或密码错误提示信息的国际化资源串
		tips = messages.get("LoginBean.tips.nouser");;
	}
	
	
}