JDBC之对岸女孩看过来view-原创手记-慕课网

package com.imooc.view;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Scanner;

import com.imooc.action.GodAction;
import com.imooc.po.God;

public class GodView {
private static final String CONTEXT = "=====欢迎来到女神禁区，下面是女神禁区功能列表=====\n"

"字母[m]：主菜单\n"
"字母[q]：查看全部女神信息\n"
"字母[g]：查看某位女神详细信息\n"
"字母[a]：添加女神信息\n"
"字母[u]：更新女神信息\n"
"字母[d]：删除女神信息\n"
"字母[s]：根据名字模糊查询女神信息\n"
"字母[b]：退出当前功能，返回主菜单\n"

"字母[e]：退出女神禁区\n" ;

private static final String OPERATION_MAIN = "MAIN";
private static final String OPERATION_QUERY = "QUERY";
private static final String OPERATION_GET = "GET";
private static final String OPERATION_ADD = "ADD";
private static final String OPERATION_UPDATE = "UPDATE";
private static final String OPERATION_DELETE = "DELETE";
private static final String OPERATION_SEARCH = "SEARCH";
private static final String OPERATION_BREAK = "BREAK";
private static final String OPERATION_EXIT = "EXIT";

public static void main(String[] args) {
System.out.println(CONTEXT);
//通过下面方式创建Scanner对象,控制台会一直等待输入,直到敲回车键结束,把所输入的内容传给scanner,作为扫描对象.
Scanner scan=new Scanner(System.in);
God g=new God();
GodAction action=new GodAction();
List<God> list=new ArrayList<God>();
//记忆变量,让其在同一个功能模块里
String prenious=null;
//步骤
Integer step=1;

//怎么保存程序的一直运行
//scan.hasNext()有输入值就循环,没输入值就不循环  while(true)
while(scan.hasNext()){
    String flag=scan.next().trim();
    //退出女神
    //if(OPERATION_EXIT.equalsIgnoreCase(flag)):忽略大小写
    if(OPERATION_EXIT.equals(flag.toUpperCase())||OPERATION_EXIT.substring(0, 1).equals(flag.toUpperCase())){
        System.out.println("---已退出女神禁区---");
        break;
    }else if(OPERATION_MAIN.equals(flag.toUpperCase())||OPERATION_MAIN.substring(0, 1).equals(flag.toUpperCase())){
        //返回主菜单
        System.out.println("---返回主菜单---");
        System.out.println(CONTEXT);

    }else if(OPERATION_GET.equals(flag.toUpperCase())||OPERATION_GET.substring(0, 1).equals(flag.toUpperCase())||OPERATION_GET.equals(prenious)){
        prenious=OPERATION_GET;
        //查询一个女神
        if(1==step){
            System.out.println("请输入需要查询女神的id");
        }else if(2==step){

            try {
                g=action.queryById(Integer.valueOf(flag));
                if(null!=g){
                    System.out.println(g.toString());
                    System.out.println("查询一个女神成功");
                    step=1;
                }else{
                    System.out.println("输入的id不存在");
                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                System.out.println("输入id出错,请重新输入"); 
            }

        }
        if(OPERATION_GET.equals(prenious)){
            step++;
        }

    }else if(OPERATION_UPDATE.equals(flag.toUpperCase())||OPERATION_UPDATE.substring(0, 1).equals(flag.toUpperCase())||OPERATION_UPDATE.equals(prenious)){
        //更新
        prenious=OPERATION_UPDATE;
        //新增女神
        if(1==step){
            System.out.println("请输入跟新女神的[姓名]");
        }else if(2==step){
            g.setUser_name(flag);
            System.out.println("请输入跟新女神的[年龄]");
        }else if(3==step){
            g.setAge(Integer.valueOf(flag));;
            System.out.println("请输入跟新女神的[id]");
        }else if(4==step){
            g.setId(Integer.valueOf(flag));                 
            try {
                action.update(g);;
                System.out.println("跟新女神成功");
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                System.out.println("跟新女神失败");
            }

        }

        if(OPERATION_UPDATE.equals(prenious)){
            step++;
        }

    }else if(OPERATION_QUERY.equals(flag.toUpperCase())||OPERATION_QUERY.substring(0, 1).equals(flag.toUpperCase())||OPERATION_QUERY.equals(prenious)){
        prenious=OPERATION_QUERY;
        //查询女神
        list=action.query();
        for (int i = 0; i < list.size(); i++) {
            System.out.print(list.get(i).getId());
            System.out.print(list.get(i).getUser_name());
            System.out.print(list.get(i).getSex());
            System.out.print(list.get(i).getAge());
            System.out.print(list.get(i).getBirthday());
            System.out.println();
        }
    }else if(OPERATION_ADD.equals(flag.toUpperCase())||OPERATION_ADD.substring(0, 1).equals(flag.toUpperCase())||OPERATION_ADD.equals(prenious)){
        prenious=OPERATION_ADD;
        //新增女神
        if(1==step){
            System.out.println("请输入新增女神的[姓名]");
        }else if(2==step){
            g.setUser_name(flag);
            System.out.println("请输入新增女神的[年龄]");
        }else if(3==step){
            g.setAge(Integer.valueOf(flag));
            System.out.println("请输入新增女神的[生日],格式为:yyyy-MM-dd");
        }else if(4==step){
            SimpleDateFormat sf=new SimpleDateFormat("yyyy-MM-dd");
            Date birthday=null;
            try {
                birthday = sf.parse(flag);
                g.setBirthday(birthday);
                System.out.println("请输入新增女神的[邮箱]");
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                System.out.println("您输入的格式有误,请重新输入");
                step=3;
            }

        }else if(5==step){
            g.setEmail(flag);
            System.out.println("请输入新增女神的[手机号]");
        }else if(6==step){
            g.setMobile(flag);

            try {
                action.add(g);
                System.out.println("新增女神成功");
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                System.out.println("新增女神失败");
            }

        }

        if(OPERATION_ADD.equals(prenious)){
            step++;
        }

    }else{
        System.out.println("您输入的值为:"+flag);
    }

}

}