第六天上午、Java的Apache+Tomcat服务器的配置

代码完善

首先回顾上次的任务，就是要求写出另外三个功能的代码，另外三个功能的代码没什么新的东西，也跟以前的一样，所以这个直接看代码就行了，
UserView.java

package Demo2;
import java.util.Scanner;
public class UserView
{
    public static void main(String[] args)
    {
        // TODO Auto-generated method stub
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入账号：");
        String account = sc.next();
        System.out.println("请输入密码：");
        String password = sc.next();
        //调用用户名密码检测
        boolean b = UserDao.login(account, password);
        if(b)
        {
            System.out.println("登录成功");
            OrdersView.ordersMenu();
        }
        else
        {
            sc.close();
            System.out.println("登录不成功");
        }
    }
}

UserDao.java

package Demo2;



import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class UserDao
{
    //返回true为正确，false为错误
    public static boolean login(String account,String password)
    {
        boolean b = false;
        try
        {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe", "scott", "tiger");
            PreparedStatement ps = conn.prepareStatement("select * from tb_user where user_account=? and password=?");
            ps.setString(1, account);
            ps.setString(2, password);
            ResultSet rs = ps.executeQuery();
            if(rs.next())
                b = true;

            rs.close();
            ps.close();
            conn.close();
        } catch (Exception e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //查询数据库是否有这个用户
//      if(account.equals("123") && password.equals("qwe"))
//          return true;
//      else
//          return false;
        return b;
    }
}

OrsersView.java

package Demo2;

import java.util.List;
import java.util.Scanner;
public class OrdersView
{
    public static void ordersMenu()
    {
        while(true)
        {
            System.out.println("1--订单的显示");
            System.out.println("2--销售额的统计");
            System.out.println("3--销售记录的统计");
            System.out.println("4--商品销售占比统计");
            System.out.println("其他--退出");
            //用户输入选项
            System.out.println("请输入选项：");
            Scanner sc = new Scanner(System.in);
            int input = sc.nextInt();
            //sc.close();
            switch(input)
            {
                case 1:
                    List> orders = OrdersDao.getOrders();
                    System.out.println("序号\t订单编号\t\t\t\t所属账户\t\t生成时间\t\t\t\t\t\t商品信息");
                    for(int i = 0; i < orders.size();i++)
                        System.out.println(orders.get(i)); break;
                case 2:
                    List> sales = OrdersDao.getSales();
                    System.out.println("月份\t销售额");
                    for(int i = 0; i < sales.size();i++)
                        System.out.println(sales.get(i)); break;
                case 3:
                    List> salesCount = OrdersDao.getSalesCount();
                    System.out.println("月份\t销售数量");
                    for(int i = 0; i < salesCount.size();i++)
                        System.out.println(salesCount.get(i)); break;
                case 4:
                    List> salesRate = OrdersDao.getSalesRate();
                    System.out.println("品牌\t销售数量\t销售额");
                    for(int i = 0; i < salesRate.size();i++)
                        System.out.println(salesRate.get(i)); break;
                default: sc.close(); System.out.println("输入的指令不对药~~~"); return;
            }
        }
    }
}

OrdersDao.java

package Demo2;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.Calendar;
public class OrdersDao
{
    public static List> getSalesRate()
    {
        List> table = new ArrayList>();
        try
        {
            int year = getYear();
            Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","scott","tiger");
            PreparedStatement ps = conn.prepareStatement("select p.pro_brand,sum(op.pro_count),sum(op.pro_count*p.pro_price) "
                    + " from tb_orders o,tb_orders_product op,tb_product p "
                    + " where o.o_code=op.o_code "
                    + " and op.pro_id = p.pro_id "
                    + " and substr(o.create_date,1,4) = "+year
                    + " group by p.pro_brand ");
            ResultSet rs = ps.executeQuery();
            while(rs.next())
            {
                List