user_login_jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<!--header-->
<jsp:include page="header.jsp">
    <jsp:param name="flag" value="9"></jsp:param>
</jsp:include>
<!--//header-->
<!--account-->
<div class="account">
    <div class="container">
        <div class="register">
            <c:if test="${!empty msg }">
                <div class="alert alert-success">${msg }</div>
            </c:if>
            <c:if test="${!empty failMsg }">
                <div class="alert alert-danger">${failMsg }</div>
            </c:if>
            <form action="/user_login" method="post">
                <div class="register-top-grid">
                    <h3>用户登录</h3>
                    <div class="input">
                        <span>用户名/邮箱 <label style="color:red;">*</label></span>
                        <input type="text" name="ue" placeholder="请输入用户名" required="required">
                    </div>
                    <div class="input">
                        <span>密码 <label style="color:red;">*</label></span>
                        <input type="password" name="password" placeholder="请输入密码" required="required">
                    </div>
                    <div class="clearfix"> </div>
                </div>
                <div class="register-but text-center">
                    <input type="submit" value="提交">
                    <div class="clearfix"> </div>
                </div>
            </form>
            <div class="clearfix"> </div>
        </div>
    </div>
</div>
<!--//account-->
<!--footer-->
<jsp:include page="footer.jsp"></jsp:include>
<!--//footer-->
UserLoginServlet
package service;

import model.User;
import service.UserService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet(name = "user_login",urlPatterns = "/user_login")
public class UserLoginServlet extends HttpServlet {
    private UserService uService = new UserService();
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String ue = request.getParameter("ue");
        String password = request.getParameter("password");
        User user = uService.login(ue, password);
        if(user==null) {
            request.setAttribute("failMsg", "用户名、邮箱或者密码错误，请重新登录！");
            request.getRequestDispatcher("/user_login.jsp").forward(request, response);
        }else {
            request.getSession().setAttribute("user", user);
            request.getRequestDispatcher("/user_center.jsp").forward(request, response);
        }
    }

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request,response);
}
}

User
package model;

public class User {
    private int id;
    private String username;
    private String email;
    private String password;
    private String name;
    private String phone;
    private String address;
    private boolean isadmin=false;
    private boolean isvalidate=false;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", email=" + email + ", password=" + password + ", name="
                + name + ", phone=" + phone + ", address=" + address + ", isadmin=" + isadmin + ", isvalidate="
                + isvalidate + "]";
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public boolean isIsadmin() {
        return isadmin;
    }
    public void setIsadmin(boolean isadmin) {
        this.isadmin = isadmin;
    }
    public boolean isIsvalidate() {
        return isvalidate;
    }
    public void setIsvalidate(boolean isvalidate) {
        this.isvalidate = isvalidate;
    }
    public User(int id, String username, String email, String password, String name, String phone, String address,
                boolean isadmin, boolean isvalidate) {
        super();
        this.id = id;
        this.username = username;
        this.email = email;
        this.password = password;
        this.name = name;
        this.phone = phone;
        this.address = address;
        this.isadmin = isadmin;
        this.isvalidate = isvalidate;
    }
    public User( String username, String email, String password, String name, String phone, String address) {
        this.username = username;
        this.email = email;
        this.password = password;
        this.name = name;
        this.phone = phone;
        this.address = address;
        this.isadmin = false;
        this.isvalidate = false;
    }
    public User() {
        super();
    }

}

user_register
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<!--header-->
<jsp:include page="/header.jsp">
    <jsp:param name="flag" value="10"></jsp:param>
</jsp:include>
<!--//header-->
<!--account-->
<div class="account">
    <div class="container">
        <div class="register">
            <!--注册信息-->
            <c:if test="${!empty msg }">
                <div class="alert alert-danger">${msg }</div>
            </c:if>
            <form action="/user_register" method="post">
                <div class="register-top-grid">
                    <h3>注册新用户</h3>
                    <div class="input">
                        <span>用户名 <label style="color:red;">*</label></span>
                        <input type="text" name="username" placeholder="请输入用户名" required="required">
                    </div>
                    <div class="input">
                        <span>邮箱 <label style="color:red;">*</label></span>
                        <input type="text" name="email" placeholder="请输入邮箱" required="required">
                    </div>
                    <div class="input">
                        <span>密码 <label style="color:red;">*</label></span>
                        <input type="password" name="password" placeholder="请输入密码" required="required">
                    </div>
                    <div class="input">
                        <span>收货人<label></label></span>
                        <input type="text" name="name" placeholder="请输入收货">
                    </div>
                    <div class="input">
                        <span>收货电话<label></label></span>
                        <input type="text" name="phone" placeholder="请输入收货电话">
                    </div>
                    <div class="input">
                        <span>收货地址<label></label></span>
                        <input type="text" name="address" placeholder="请输入收货地址">
                    </div>
                    <div class="clearfix"> </div>
                </div>
                <div class="register-but text-center">
                   <input type="submit" value="提交">
                   <div class="clearfix"> </div>
                </div>
            </form>
            <div class="clearfix"> </div>
        </div>
    </div>
</div>
<!--//account-->
<!--footer-->
<jsp:include page="/footer.jsp"></jsp:include>
<!--//footer-->
UsrService
package service;

import dao.UserDao;
import model.Page;
import model.User;

import java.sql.SQLException;
import java.util.List;

public class UserService {
    private UserDao uDao = new UserDao();
    public boolean register(User user) {
        try {
            if(uDao.isUsernameExist(user.getUsername())) {
                return false;
            }
            if(uDao.isEmailExist(user.getEmail())) {
                return false;
            }
            uDao.addUser(user);
            return true;
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return false;
    }

public User login(String ue,String password) {
    User user=null;
    try {
        user = uDao.selectByUsernamePassword(ue, password);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    if(user!=null) {
        return user;
    }
    try {
        user=uDao.selectByEmailPassword(ue, password);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    if(user!=null) {
        return user;
    }
    return null;
}
public User selectById(int id) {
    User u=null;
    try {
        u = uDao.selectById(id);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return u;
}
public void updateUserAddress(User user) {
    try {
        uDao.updateUserAddress(user);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
public void updatePwd(User user) {
    try {
        uDao.updatePwd(user);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
public Page getUserPage(int pageNumber) {
    Page p = new Page();
    p.setPageNumber(pageNumber);
    int pageSize = 7;
    int totalCount = 0;
    try {
        totalCount = uDao.selectUserCount();
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    p.SetPageSizeAndTotalCount(pageSize, totalCount);
    List list=null;
    try {
        list = uDao.selectUserList( pageNumber, pageSize);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    p.setList(list);
    return p;
}
public boolean delete(int id ) {
    try {
        uDao.delete(id);
        return true;
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return false;
    }
}
}

UserDao
package dao;

import model.User;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.ScalarHandler;
import utils.DataSourceUtils;

import java.sql.SQLException;
import java.util.List;

public class UserDao {
    public void addUser(User user) throws SQLException {
        QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
        String sql = "insert into user(username,email,password,name,phone,address,isadmin,isvalidate) values(?,?,?,?,?,?,?,?)";
        r.update(sql,user.getUsername(),user.getEmail(),user.getPassword(),user.getName(),user.getPhone(),user.getAddress(),user.isIsadmin(),user.isIsvalidate());
    }
    public boolean isUsernameExist(String username) throws SQLException {
        QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
        String sql = "select * from user where username = ?";
        User u = r.query(sql, new BeanHandler(User.class),username);
        if(u==null) {
            return false;
        }else {
            return true;
        }
    }
    public boolean isEmailExist(String email) throws SQLException {
        QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
        String sql = "select * from user where email = ?";
        User u = r.query(sql, new BeanHandler(User.class),email);
        if(u==null) {
            return false;
        }else {
            return true;
        }
    }
    public User selectByUsernamePassword(String username,String password) throws SQLException {
        QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
        String sql = "select * from user where username=? and password=?";
        return r.query(sql, new BeanHandler(User.class),username,password);
    }
    public User selectByEmailPassword(String email,String password) throws SQLException {
        QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
        String sql = "select * from user where email=? and password=?";
        return r.query(sql, new BeanHandler(User.class),email,password);
    }
    public User selectById(int id) throws SQLException {
        QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
        String sql = "select * from user where id=?";
        return r.query(sql, new BeanHandler(User.class),id);
    }

public void updateUserAddress(User user) throws SQLException {
    QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
    String sql ="update user set name = ?,phone=?,address=? where id = ?";
    r.update(sql,user.getName(),user.getPhone(),user.getAddress(),user.getId());
}
public void updatePwd(User user) throws SQLException {
    QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
    String sql ="update user set password = ? where id = ?";
    r.update(sql,user.getPassword(),user.getId());
}
public int selectUserCount() throws SQLException {
    QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
    String sql = "select count(*) from user";
    return r.query(sql, new ScalarHandler<Long>()).intValue();
}
public List selectUserList(int pageNo, int pageSize) throws SQLException {
    QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
    String sql = "select * from user limit ?,?";
    return r.query(sql, new BeanListHandler<User>(User.class), (pageNo-1)*pageSize,pageSize );
}
public void delete(int id) throws SQLException {
    QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource());
    String sql = "delete from user where id = ?";
    r.update(sql,id);
}
}