自己完成了基本的增删改查功能，还有个问题就是不能连续两次操作，比如不能连续添加或者修改，老师的添加代码也不能实现，时间原因没有再做完善。下面是视图层View的代码。
package com.imooc.view;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Scanner;
import com.imooc.action.GoddessAction;
import com.imooc.model.Goddess;
public class View {
private static final String CONTEXT = "欢迎来到女神禁区：\n" + "下面是女神禁区的功能列表：\n"
+ "[MAIN/M]:主菜单\n" + "[QUERY/Q]:查看全部女神的信息\n"
+ "[GET/G]:查看某位女神的详细信息\n" + "[ADD/A]:添加女神信息\n"
+ "[UPDATE/U]:更新女神信息\n" + "[DELETE/D]:删除女神信息\n"
+ "[SEARCH/S]:查询女神信息(根据姓名、手机号来查询)\n" + "[EXIT/E]:退出女神禁区\n"
+ "[BREAK/B]:退出当前功能，返回主菜单";
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_EXIT = "EXIT";
private static final String OPERATION_BREAK = "BREAK";
public static void main(String[] args) throws SQLException {
System.out.println(CONTEXT);
// 怎么保持程序一直运行
Scanner scan = new Scanner(System.in);
Goddess goddess = new Goddess();
GoddessAction action = new GoddessAction();
String previous = null;
Integer step = 1,stepU = 1,stepD = 1;
while (scan.hasNext()) {
String in = scan.next().toString();
if (OPERATION_EXIT.equals(in.toUpperCase())
|| OPERATION_EXIT.substring(0, 1).equals(in.toUpperCase())) {
System.out.println("您已成功退出女神禁区。");
break;
}else if (OPERATION_UPDATE.equals(in.toUpperCase())
|| OPERATION_UPDATE.substring(0, 1).equals(in.toUpperCase())
|| OPERATION_UPDATE.equals(previous)) {
previous = OPERATION_UPDATE;
// 修改女神信息
if (1 == stepU) {
System.out.println("请输入需要修改的女神ID");
Integer inId=scan.nextInt();
Goddess goddess2=action.get(inId);
System.out.println(goddess2.toString());
goddess.setId(inId);
System.out.println("请输入修改后的名字");
}else if (2 == stepU) {
goddess.setUser_name(in);
System.out.println("请输入修改后的年龄");
} else if (3 == stepU) {
goddess.setAge(Integer.valueOf(in));
System.out.println("请输入修改后的生日，格式如：yyyy-MM-dd");
} else if (4 == stepU) {
SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
Date birthday = null;
try {
birthday = sf.parse(in);
goddess.setBirthday(birthday);
System.out.println("请输入修改后的女神的邮箱");
} catch (ParseException e) {
e.printStackTrace();
System.out.println("您输入的格式有误，请重新输入");
step = 3;
}
} else if (5 == stepU) {
goddess.setEmail(in);
System.out.println("请输入修改后的女神的手机号");
} else if (6 == stepU) {
goddess.setMobile(in);
try {
action.edit(goddess);
System.out.println("修改女神信息成功");
previous=null;
continue;
} catch (Exception e) {
e.printStackTrace();
System.out.println("修改女神信息失败");
}
}
if (OPERATION_UPDATE.equals(previous)) {
stepU++;
}
} else if (OPERATION_DELETE.equals(in.toUpperCase())
|| OPERATION_DELETE.substring(0, 1).equals(in.toUpperCase())
|| OPERATION_DELETE.equals(previous)) {
//删除信息
previous = OPERATION_DELETE;
if(1 == stepD){
System.out.println("请输入需要删除女神的ID");
Integer inId=scan.nextInt();
Goddess goddess3=action.get(inId);
System.out.println(goddess3.toString());
action.del(inId);
System.out.println("删除成功");
previous = null;
continue;
}else{
System.out.println("操作失败");
}
}else if (OPERATION_QUERY.equals(in.toUpperCase())
|| OPERATION_QUERY.substring(0, 1).equals(in.toUpperCase())) {
try {
List<Goddess> list = action.query();
for (Goddess go : list) {
System.out.println(go.getId() + ",姓名："
+ go.getUser_name());
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else if (OPERATION_ADD.equals(in.toUpperCase())
|| OPERATION_ADD.substring(0, 1).equals(in.toUpperCase())
|| OPERATION_ADD.equals(previous)) {
previous = OPERATION_ADD;
// 新增女神
if (1 == step) {
System.out.println("请输入女神的［姓名］");
} else if (2 == step) {
goddess.setUser_name(in);
System.out.println("请输入女神的［年龄］");
} else if (3 == step) {
goddess.setAge(Integer.valueOf(in));
System.out.println("请输入女神的［生日］，格式如：yyyy-MM-dd");
} else if (4 == step) {
SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
Date birthday = null;
try {
birthday = sf.parse(in);
goddess.setBirthday(birthday);
System.out.println("请输入女神的［邮箱］");
} catch (ParseException e) {
e.printStackTrace();
System.out.println("您输入的格式有误，请重新输入");
step = 3;
}
} else if (5 == step) {
goddess.setEmail(in);
System.out.println("请输入女神的［手机号］");
} else if (6 == step) {
goddess.setMobile(in);
try {
action.add(goddess);
System.out.println("新增女神成功");
} catch (Exception e) {
e.printStackTrace();
System.out.println("新增女神失败");
}
}
if (OPERATION_ADD.equals(previous)) {
step++;
}
} else {
System.out.println("您输入的值为:" + in);
}
}
}
}
