JDBC之对岸女孩看过来view

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);
      }
  
  }

  }

}