package cn.itcast.dao;
import java.util.ArrayList;
import java.util.Scanner;
import com.sun.jndi.ldap.ManageReferralControl;
import com.sun.org.apache.bcel.internal.generic.NEW;
import sun.awt.geom.AreaOp.AddOp;
import cn.itcast.main.*;
import cn.itcast.model.Book;
import cn.itcast.model.User;
public class Login {
private String username;
private String password;
// Book book=new Book();\
UserDao userDao = new UserDao();
Scanner scan = new Scanner(System.in);
private static ArrayList<Book> list = new ArrayList<Book>();
public ArrayList<Book> getList() {
return list;
}
public void setList(ArrayList<Book> list) {
this.list = list;
}
public void login() {
System.out.println("请输入账号");
checkusername();
}
public void checkusername() {
username = scan.next();
for (int i = 0; i < UserDao.getUsers().size(); i++) {
User u = (User) UserDao.getUsers().get(i);
if (u.getUserName().equals(username)) {
System.out.println("请输入密码");
checkpassword();
} else {
System.out.println("账号输入错误 ，请重新输入");
checkusername();
}
}
}
public void checkpassword() {
password = scan.next();
for (int i = 0; i < UserDao.getUsers().size(); i++) {
User u = (User) UserDao.getUsers().get(i);
if (u.getPassword().equals(password)) {
System.out.println("恭喜您登录成功");
choose();
} else {
System.out.println("密码输入错误 ，请重新输入");
checkpassword();
}
}
}
public void choose() {
// TODO Auto-generated method stub
System.out.println("请输入您的选择");
System.out.println("1、管理员管理2、图书管理3、返回首页");
String s = scan.next();
if (s.equalsIgnoreCase("1")) {
manager();
}
else if (s.equalsIgnoreCase("2")) {
Crud c = new Crud();
c.choose();
}
else if (s.equalsIgnoreCase("3")) {
System.out.println("现在返回首页");
}
// else{
// System.out.println("查看图书输入错误 请重新输入");
// choose();
// }
}
/**
*
*/
public void manager() {
// TODO Auto-generated method stub
System.out.println("请输入您的选择");
System.out.println("1、增加管理员2、删除管理员3、修改管理员、4、查看管理员");
String s = scan.next();
if (s.equalsIgnoreCase("1")) {
adduser();
}
else if (s.equalsIgnoreCase("2")) {
deluser();
}
else if (s.equalsIgnoreCase("3")) {
updatauser();
}
else if (s.equalsIgnoreCase("4")) {
selectuser();
}
}
/**
*
*/
private void selectuser() {
// TODO Auto-generated method stub
System.out.println("您已经进入查看管理员，请输入管理员的名字");
// Book book = new Book();
String bookname = scan.next();
for (int i = 0; i < userDao.getUsers().size(); i++) {
User u = (User) userDao.getUsers().get(i);
if (u.getUserName().equals(username)) {
System.out.println("下面是查看到的信息");
System.out.print(u.getUserName() + " ");
System.out.println(u.getPassword());
}
choose();
}
}
/**
*
*/
private void updatauser() {
// TODO Auto-generated method stub
System.out.println("您已经进入修改管理员，请输入管理员名字");
// Book book = new Book();
String username = scan.next();
for (int i = 0; i < userDao.getUsers().size(); i++) {
User u = (User) userDao.getUsers().get(i);
if (u.getUserName().equals(username)) {
System.out.println("请输入新的管理员名字和密码");
String newuser = scan.next();
String newpass = scan.next();
u.setUserName(newuser);
u.setPassword(newpass);
System.out.println("您要修改的管理员" + username + "已经修改成功");
choose();
}
}
}
/**
*
*/
private void deluser() {
// TODO Auto-generated method stub
System.out.println("您已经进入删除管理员系统，请输入管理员的名字");
String username = scan.next();
for (int i = 0; i < userDao.getUsers().size(); i++) {
User u = (User) userDao.getUsers().get(i);
if (u.getUserName().equals(username)) {
userDao.getUsers().remove(u);
System.out.println("您已经成功删除了书本信息");
choose();
}
}
}
/**
*
*/
private void adduser() {
// TODO Auto-generated method stub
System.out.println("增加管理员，请输入新的管理员账号，密码");
String username = scan.next();
String password = scan.next();
User user = new User();
user.setUserName(username);
user.setPassword(password);
// book.getList().add(book);
userDao.getUsers().add(user);
System.out.println("您已经成功添加了管理员信息");
System.out.println("管理员信息是" + userDao.getUsers());
choose();
}
}
libarary.zip （17个子文件） 
libarary src cn itcast dao 
Crud.java 3KB Login.java 5KB UserDao.java 1KB model User.java 718B Book.java 1KB main LibararyMain.java 2KB bin cn itcast dao Crud.class 4KB Login.class 5KB UserDao.class 2KB model User.class 1KB Book.class 2KB main LibararyMain.class 2KB .classpath 295B .settings org.eclipse.jdt.core.prefs 629B .project 384B 工作流程 858B .myumldata 66B资源评论
