1.CRM用户登录

来源：互联网发布：flash编辑软件编辑：程序博客网时间：2024/04/30 09:16

1.dao层声明login（）方法

public interface UserDao {    /**     * 用户登录     * @param user     * @return     */    public User login(User user);}

2.service层复制dao层的方法

public interface UserService {    /**     * 用户登录     * @param user     * @return     */    public User login(User user);}

3.创建service层的实现类，注入userDao

@Service("userService")public class UserServiceImpl implements UserService{    @Resource    private UserDao userDao;    @Override    public User login(User user) {        return userDao.login(user);    }}

4.编写Controller层的login()方法

@Controller@RequestMapping("/user")public class UserController {    @Resource    private UserService userService;    /**     * 用户登录     * @param user     * @param request     * @return     * @throws Exception     */    @RequestMapping("/login")    public String login(User user,HttpServletRequest request)throws Exception{        User resultUser=userService.login(user);        if(resultUser==null){            request.setAttribute("user", user);            request.setAttribute("errorMsg", "用户名或密码错误！");            return "login";        }else{            HttpSession session=request.getSession();            session.setAttribute("currentUser", resultUser);            return "redirect:/main.jsp";        }    }}

5.编写UserMapper.xml文件中的查询方法

<select id="login" parameterType="User" resultMap="UserResult">        select * from t_user where userName=#{userName} and password=#{password} and roleName=#{roleName}    </select>

6.编写login.jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>客户关系管理系统登录</title><script type="text/javascript" src="${pageContext.request.contextPath}/jquery-easyui-1.3.3/jquery.min.js"></script><STYLE type=text/css>BODY {    TEXT-ALIGN: center;    PADDING-BOTTOM: 0px;    BACKGROUND-COLOR: #ddeef2;    MARGIN: 0px;    PADDING-LEFT: 0px;    PADDING-RIGHT: 0px;    PADDING-TOP: 0px}A:link {    COLOR: #000000;    TEXT-DECORATION: none}A:visited {    COLOR: #000000;    TEXT-DECORATION: none}A:hover {    COLOR: #ff0000;    TEXT-DECORATION: underline}A:active {    TEXT-DECORATION: none}.input {    BORDER-BOTTOM: #ccc 1px solid;    BORDER-LEFT: #ccc 1px solid;    LINE-HEIGHT: 20px;    WIDTH: 182px;    HEIGHT: 20px;    BORDER-TOP: #ccc 1px solid;    BORDER-RIGHT: #ccc 1px solid}.input1 {    BORDER-BOTTOM: #ccc 1px solid;    BORDER-LEFT: #ccc 1px solid;    LINE-HEIGHT: 20px;    WIDTH: 120px;    HEIGHT: 20px;    BORDER-TOP: #ccc 1px solid;    BORDER-RIGHT: #ccc 1px solid;}</STYLE><script type="text/javascript">    function login(){        var userName=$("#userName").val();        var password=$("#password").val();        var roleName=$("#roleName").val();        if(userName==null||userName==""){            alert("用户名不能为空！");            return;        }        if(password==null||password==""){            alert("密码不能为空！");            return;        }        if(roleName==null||roleName==""){            alert("请选择用户类型！");            return;        }        $("#adminlogin").submit();             }</script></head><body><FORM id=adminlogin  method=post    name=adminlogin action="${pageContext.request.contextPath}/user/login.do"  ><DIV></DIV><TABLE style="MARGIN: auto; WIDTH: 100%; HEIGHT: 100%" border=0    cellSpacing=0 cellPadding=0>    <TBODY>        <TR>            <TD height=150>&nbsp;</TD>        </TR>        <TR style="HEIGHT: 254px">            <TD>            <DIV style="MARGIN: 0px auto; WIDTH: 936px"><IMG                style="DISPLAY: block" src="${pageContext.request.contextPath}/images/body_03.jpg"></DIV>            <DIV style="BACKGROUND-COLOR: #278296">            <DIV style="MARGIN: 0px auto; WIDTH: 936px">            <DIV                style="BACKGROUND: url(${pageContext.request.contextPath}/images/body_05.jpg) no-repeat; HEIGHT: 155px">            <DIV                style="TEXT-ALIGN: left; WIDTH: 265px; FLOAT: right; HEIGHT: 125px; _height: 95px">            <TABLE border=0 cellSpacing=0 cellPadding=0 width="100%">                <TBODY>                    <TR>                        <TD style="HEIGHT: 45px"><INPUT type="text" class=input value="${user.userName }" name="userName" id="userName"></TD>                    </TR>                    <TR>                        <TD><INPUT type="password" class=input value="${user.password }" name="password" id="password"/></TD>                    </TR>                    <TR>                        <td>                            <select id="roleName" name="roleName" class="input" style="margin-top: 15px;height: 24px">                                <option value="">请选择用户类型...</option>                                <option value="系统管理员"  ${'系统管理员'==user.roleName?'selected':'' }>系统管理员</option>                                <option value="销售主管"  ${'销售主管'==user.roleName?'selected':'' }>销售主管</option>                                <option value="客户经理"  ${'客户经理'==user.roleName?'selected':'' }>客户经理</option>                                <option value="高管"  ${'高管'==user.roleName?'selected':'' }>高管</option>                            </select>                        </td>                    </TR>                </TBODY>            </TABLE>            </DIV>            <DIV style="HEIGHT: 1px; CLEAR: both"></DIV>            <DIV style="WIDTH: 380px; FLOAT: right; CLEAR: both">            <TABLE border=0 cellSpacing=0 cellPadding=0 width=300>                <TBODY>                    <TR>                        <TD width=100 align=right><INPUT                            style="BORDER-RIGHT-WIDTH: 0px; BORDER-TOP-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px"                            id=btnLogin src="${pageContext.request.contextPath}/images/btn1.jpg" type=image name=btnLogin onclick="javascript:login();return false;"></TD>                        <TD width=100 align=middle><INPUT                            style="BORDER-RIGHT-WIDTH: 0px; BORDER-TOP-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px"                            id=btnReset src="${pageContext.request.contextPath}/images/btn2.jpg" type=image name=btnReset onclick="javascript:adminlogin.reset();return false;"></TD>                    </TR>                </TBODY>            </TABLE>            </DIV>            </DIV>            </DIV>            </DIV>            <DIV style="MARGIN: 0px auto; WIDTH: 936px"><IMG                src="${pageContext.request.contextPath}/images/body_06.jpg"></DIV>            </TD>        </TR>        <TR style="HEIGHT: 30%">            <TD>&nbsp;</TD>        </TR>    </TBODY></TABLE></FORM></body></html><script type=text/javascript>    if('${errorMsg}'!=''){        alert('${errorMsg}');    }</script>

8.编写main.jsp页面（空页面）

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body>Main.jsp</body></html>

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