一、概述

从今天才开始有时间来总结总结以前自己练习的一些东西，希望总结出来对以后可以更加便捷的来学习，也希望可以帮助到正需要这些东西的同行人，一起学习，共同进步。

二、登录功能总结

2.1、登录功能概述

这个技术主要是运用Struts2+hibernate+spring的技术来进行登录功能的实现的，并且是在一个具体的项目中来实现的，对于以后的借鉴能够提供便捷。

2.2、具体实现

2.2.1、登录页面的实现

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="css/index.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="js/jquery-1.8.3.js"></script>
<title>赣师大qualitycontrol-系统登录页</title>
<script>
 $(function() {
 $("#login_ok").click(function() {
 $("form:first").submit();
 });
 });
function MM_swapImage(srcObj,image_src){
 srcObj.src=image_src;
 }
</script>
</head>
<body>
<s:actionerror/>
<div class="container-login">
<div class="login-pic">
<div class="login-text">
<s:form action="emp_login" method="post">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="19%" height="28">用户名：</td>
<td colspan="2">
<s:textfield name="em.userName" size="18" value="admin"/>
</td>
</tr>
<tr>
<td height="31">密&nbsp;&nbsp;码：</td>
<td colspan="2">
<s:textfield name="em.pwd" size="18" value="admin"/>
</td>
</tr>
<tr>
<td height="30">验证码：</td>
<td width="43%">
<input type="text" size="9" />
</td>
<td width="32%"><img src="images/test.gif" />
</td>
</tr>
<tr>
<td height="30">&nbsp;</td>
<td colspan="2">
<a href="javascript:void(0)" id="login_ok">
<img src="images/denglu_bg_03.gif" 
name="Image1" width="40" 
height="22" border="0" 
onmouseover="MM_swapImage(this,'images/denglu_h_03.gif')" 
onmouseout="MM_swapImage(this,'images/denglu_bg_03.gif')" /></a>
<a href="#">
<img src="images/giveup_bg_03.gif" 
name="Image2" width="42" 
height="22" border="0" 
onmouseover="MM_swapImage(this,'images/giveup_h_03.gif')" 
onmouseout="MM_swapImage(this,'images/giveup_bg_03.gif')" /></a>
</td>
</tr>
</table>
</s:form>
</div>
</div>
</div>
</body>
</html>

在这里的一部分，主要是页面的回显和验证码的显示s:textfield name="em.userName" size="18" value="admin"/>。

2.2.2、action的实现

//登录
    public String login(){
        HttpServletRequest request = getRequest();
        String loginIp = request.getHeader("x-forwarded-for"); 
        if(loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) { 
            loginIp = request.getHeader("Proxy-Client-IP"); 
        } 
        if(loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) { 
            loginIp = request.getHeader("WL-Proxy-Client-IP"); 
        } 
        if(loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) { 
            loginIp = request.getRemoteAddr(); 
        }
        EmpModel loginEm = empEbi.login(em.getUserName(),em.getPwd(),loginIp);
        if(loginEm == null){
            this.addActionError("对不起，用户名密码错误！");
            return "loginFail";
        }else{
            //在登录成功的时候，查询该用户的所有权限
            List<ResModel> resList = resEbi.getResByEm(loginEm.getUuid());
            StringBuilder sbf = new StringBuilder();
            for (ResModel rm : resList) {
                sbf.append(rm.getText());
                sbf.append(",");
            }
//          System.out.println("11111111111111");
//          System.out.println(sbf.toString()+"=="+loginEm.getUuid());
//          System.out.println("11111111111111");
            loginEm.setResAll(sbf.toString());

            putSession(EmpModel.EMP_LOGIN_USER_OBJECT_NAME, loginEm);
            return "loginSuccess";
        }
    }

2.2.3、service实现

public EmpModel login(String userName, String pwd,String lastLoginIp) {
//MD5加密
        pwd = MD5Utils.md5(pwd);
//调用数据层
        EmpModel loginEm = empDao.getByUserNameAndPwd(userName,pwd);
if(loginEm != null){
//登录成功
//添加登录信息
//登录次数+1
            loginEm.setLoginTimes(loginEm.getLoginTimes()+1);
//最后登录时间
            loginEm.setLastLoginTime(System.currentTimeMillis());
//最后登录IP
            loginEm.setLastLoginIp(lastLoginIp);
//快照更新
        }
return loginEm;
    }

2.2.4、dao的实现
dao主要是通过用户名和密码来查询这个用户是否存在

public EmpModel getByUserNameAndPwd(String userName, String pwd) {
        String hql ="from EmpModel where userName = ? and pwd = ?";
        List<EmpModel> temp = this.getHibernateTemplate().find(hql,userName,pwd);
return  temp.size()>0 ? temp.get(0):null; 
    }

2.2.5、用户实体类

package org.sihai.qualitycontrol.auth.emp.vo;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import org.sihai.qualitycontrol.auth.dep.vo.DepModel;
import org.sihai.qualitycontrol.auth.role.vo.RoleModel;
import org.sihai.qualitycontrol.util.format.FormatUtil;


public class EmpModel {
public static final String EMP_LOGIN_USER_OBJECT_NAME = "loginEm";

//数据结构思想应用
public static final Integer EMP_GENDER_OF_MAN = 1;
public static final Integer EMP_GENDER_OF_WOMAN = 0;

public static final String EMP_GENDER_OF_MAN_VIEW = "男";
public static final String EMP_GENDER_OF_WOMAN_VIEW = "女";

public static final Map<Integer, String> genderMap = new HashMap<Integer, String>();
static{
        genderMap.put(EMP_GENDER_OF_MAN, EMP_GENDER_OF_MAN_VIEW);
        genderMap.put(EMP_GENDER_OF_WOMAN, EMP_GENDER_OF_WOMAN_VIEW);
    }

private Long uuid;
private String userName;
private String name;
private String pwd;
private String email;
private String tele;
private String address;
private String lastLoginIp;
private Integer loginTimes;

private Long lastLoginTime;

private Integer gender;
private String resAll;


public String getResAll() {
return resAll;
    }
public void setResAll(String resAll) {
this.resAll = resAll;
    }

/*
 //Long:记录的是毫秒值 
 //Date:对long的包装 优点：格式好，缺点：计算时间略有复杂性
 现在的时间是2020年4月31日
 180天前是几号？
 现在的long System.currentTimeMillis()-180*24*60*60*1000
 long-long >0
 Date 2014年1月4日 14：21
 Date 2014年1月4日 14：22 
 */
private Long birthday;
private Set<RoleModel> roles;//多对多


public Set<RoleModel> getRoles() {
return roles;
    }
public void setRoles(Set<RoleModel> roles) {
this.roles = roles;
    }

//视图值：视图值是一种用于界面显示的变量值，该值不具体对应某个数据库字段，它服务于某个数据库字段
//当数据库中的某个字段值不便于直接显示时，为该字段添加视图值，用于显示对应的信息
//1.定义一个String类型的变量，变量名是无法合理显示的字段的字段名+View
//2.提供其get方法
//3.在其对应的变量的set方法中对这个View值进行初始化
private String birthdayView;
private String genderView;
private String lastLoginTimeView;

public String getLastLoginTimeView() {
return lastLoginTimeView;
    }
public String getLastLoginIp() {
return lastLoginIp;
    }
public void setLastLoginIp(String lastLoginIp) {
this.lastLoginIp = lastLoginIp;
    }
public Integer getLoginTimes() {
return loginTimes;
    }
public void setLoginTimes(Integer loginTimes) {
this.loginTimes = loginTimes;
    }
public Long getLastLoginTime() {
return lastLoginTime;
    }
public void setLastLoginTime(Long lastLoginTime) {
this.lastLoginTime = lastLoginTime;
this.lastLoginTimeView = FormatUtil.formatDate(lastLoginTime);
    }
public String getGenderView() {
return genderView;
    }
public String getBirthdayView() {
return birthdayView;
    }

//多对一
private DepModel dm;

public Long getUuid() {
return uuid;
    }

public void setUuid(Long uuid) {
this.uuid = uuid;
    }

public String getUserName() {
return userName;
    }

public void setUserName(String userName) {
this.userName = userName;
    }

public String getName() {
return name;
    }

public void setName(String name) {
this.name = name;
    }

public String getPwd() {
return pwd;
    }

public void setPwd(String pwd) {
this.pwd = pwd;
    }

public String getEmail() {
return email;
    }

public void setEmail(String email) {
this.email = email;
    }

public String getTele() {
return tele;
    }

public void setTele(String tele) {
this.tele = tele;
    }

public String getAddress() {
return address;
    }

public void setAddress(String address) {
this.address = address;
    }

public Integer getGender() {
return gender;
    }

public void setGender(Integer gender) {
this.gender = gender;
this.genderView = genderMap.get(gender);
    }

public Long getBirthday() {
return birthday;
    }

public void setBirthday(Long birthday) {
this.birthday = birthday;
this.birthdayView = FormatUtil.formatDate(birthday);
    }

public DepModel getDm() {
return dm;
    }

public void setDm(DepModel dm) {
this.dm = dm;
    }

}

2.2.5.1、视图值的用法
在实体类中通过对数据的转化成页面需要显示的形式到页面来显示。

实体类中：

    private String genderView;
//数据结构思想应用
public static final Integer EMP_GENDER_OF_MAN = 1;
public static final Integer EMP_GENDER_OF_WOMAN = 0;

public static final String EMP_GENDER_OF_MAN_VIEW = "男";
public static final String EMP_GENDER_OF_WOMAN_VIEW = "女";

public static final Map<Integer, String> genderMap = new HashMap<Integer, String>();
static{
        genderMap.put(EMP_GENDER_OF_MAN, EMP_GENDER_OF_MAN_VIEW);
        genderMap.put(EMP_GENDER_OF_WOMAN, EMP_GENDER_OF_WOMAN_VIEW);
    }
//通过set方法，把性别的原本的0/1，转为男或女在页面显示
public void setGender(Integer gender) {
this.gender = gender;
this.genderView = genderMap.get(gender);
    }

页面显示：

${genderView}

2.2.5.2、Struts2中对map的取值

<s:select name="eqm.gender" list="@org.sihai.qualitycontrol.auth.emp.vo.EmpModel@genderMap" cssStyle="width:190px"
headerKey="-1" headerValue="----请-选-择----"></s:select>

这里的list的取值首先用额是Struts2的标签，然后运用ognl表达式来在页面上对map取值。

2.2.5.3、Struts2中对list的取值

<s:select name="eqm.dm.uuid" list="depList" listKey="uuid" listValue="name" cssStyle="width:190px"
headerKey="-1" headerValue="----请-选-择----"></s:select>

秒客网

【struts2+hibernate+spring项目实战】实现用户登录功能（ssh）

一、概述

二、登录功能总结

2.1、登录功能概述

2.2、具体实现

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【struts2+hibernate+spring项目实战】实现用户登录功能（ssh）

一、概述

二、 登录功能总结

2.1、登录功能概述

2.2、具体实现

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二、登录功能总结