完善DAO层，重构代码，添加了登录功能，修改了一堆bug，具体见日志

README.md

@@ -1,7 +1,6 @@
 # Homework
 - - -
-**Last Update Time : 2023-05-05**
+**Last Update Time : 2023-05-07 21:06**
-
 日志文件：`log.md`
 - - -
 ### 运行方式：
@@ -12,7 +11,13 @@ src -> main -> java -> example -> App.run()
 - `userDAO`和`merchantsDAO`中`update`语句未传参
 - 未测试非法数据
   - 已测试NULL值
+  - 已测试插入数据库时，空白符和换行符的检测
 ### 待完成功能
 - 感觉好像少了个菜品类，实体类好像还得改，服了
-- 联合查询
+  - 是的，我发现了，这个实体关系是真的乱，现在竟然用户点菜的时候需要自己设置折扣，太离谱了，以后再改叭。。。
+  - 再加个菜品类上面这个问题估计就解决了
+- 订单和菜品DAO层的update功能
 - `updata`方法更新指定字段
+- 用户密码的查询和修改
+
+> 暂时就这样了，力不从心了，以后再改吧呜呜呜~

log.md

@@ -1,7 +1,22 @@
 # Homework
 
 *网安实训作业*
+
+## 2023-05-08-NO.2
+
+**重大更新！**
+
+- 修改了超级无敌多的bug
+    - 新建订单无法点菜bug
+    - 点菜模块无法自动计算总价bug
+    - 还有其它一些小bug，不多说了
+- 增加了一部分非法值检测
+- 增加了用户登录功能
+- DAO层操作逻辑修改（主要是新建订单部分）
+- 新加用户操作模块
+
 ## 2023-05-07-NO.1
+
 - DAO层完成
 - 重构代码
     - DAO层方法整合

src/main/java/dao/specification/abstractDAO.java

@@ -17,7 +17,7 @@ public class abstractDAO<T> {
             ct = getConnection();
             ps = ct.prepareStatement(sql);
             ps.setLong(1, id);
-            flag = ps.executeUpdate(sql);
+            flag = ps.executeUpdate();
         } catch (SQLException e) {
             throw new RuntimeException(e);
         } finally {

src/main/java/dao/specification/indentDAO.java

@@ -2,16 +2,13 @@ package dao.specification;
 
 import dao.indentAbstractDAO;
 import entities.Indent;
-import entities.Merchants;
-import entities.Users;
 import org.jetbrains.annotations.NotNull;
+import view.IndentItemView;
 
-import java.sql.Connection;
+import java.sql.*;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 
 import static dao.specification.abstractDAO.Delete;
 import static util.SQLDatabaseConnection.close;
@@ -26,19 +23,45 @@ public class indentDAO implements indentAbstractDAO {
     @Override
     public int insert(@NotNull Indent indent) {
         int flag;
-        //@FIXME 这个allPrice总价怎么用SQL跨表求和啊超
+        //FIXME
-        String insert_sql = "insert into Indent(userID, merchantsID, allPrice, message, createDate) " +
+        String insert_sql = "insert into Indent(userID, merchantsID,allPrice, message, createDate) " +
-                "values(?,?,?,?,getdate())";
+                "values(?,?,0,?,getdate()) ";
+        String SetAllPrice = "update Indent " +
+                "set allPrice = (select SUM(finalPrice) " +
+                "from indentItem where Indent.id = indentItem.indentID group by indentID)" +
+                "from indentItem where indentID = Indent.id and Indent.id = ?";
+        String selectID = "select MAX(Indent.id) from Indent";
+
         try {
+            IndentItemView iiv = new IndentItemView();
             connection = getConnection();
             preparedStatement = connection.prepareStatement(insert_sql);
+            //用户ID
+            preparedStatement.setLong(1, indent.getUserID().getId());
+            //商家ID
+            preparedStatement.setLong(2, indent.getMerchantsID().getId());
+            //备注
+            if (indent.getMessage() != null && !Objects.equals(indent.getMessage(), " ")) {
+                preparedStatement.setString(3, indent.getMessage());
+            } else {
+                preparedStatement.setNull(3, Types.NVARCHAR);
+            }
 
-            preparedStatement.setObject(1, indent.getUserID());
+            flag = preparedStatement.executeUpdate();
-            preparedStatement.setObject(2, indent.getMerchantsID());
-            preparedStatement.setFloat(3, indent.getAllPrice());
-            preparedStatement.setString(4, indent.getMessage());
 
-            flag = preparedStatement.executeUpdate(insert_sql);
+            //创建订单中的菜品
+            preparedStatement = connection.prepareStatement(selectID);
+            resultSet = preparedStatement.executeQuery();
+            //新的订单对象，获取当前订单ID
+            indent = new Indent();
+            while (resultSet.next()) {
+                indent.setId(resultSet.getLong(1));
+                iiv.CreateIItem(indent.getId());
+            }
+            //更新总价
+            preparedStatement = connection.prepareStatement(SetAllPrice);
+            preparedStatement.setLong(1, indent.getId());
+            preparedStatement.executeUpdate();
 
         } catch (SQLException e) {
             throw new RuntimeException(e);
@@ -52,20 +75,6 @@ public class indentDAO implements indentAbstractDAO {
     @Override
     public int delete(@NotNull Indent indent) {
         String delete_sql = "delete from Indent where id = ?";
-//        int flag;
-//        try {
-//            connection = getConnection();
-//            preparedStatement = connection.prepareStatement(delete_sql);
-//
-//            preparedStatement.setLong(1, indent.getId());
-//
-//            flag = preparedStatement.executeUpdate(delete_sql);
-//
-//        } catch (SQLException e) {
-//            throw new RuntimeException(e);
-//        } finally {
-//            close(connection, preparedStatement, resultSet);
-//        }
         return Delete
                 (connection, preparedStatement, resultSet, delete_sql, indent.getId());
     }
@@ -86,7 +95,7 @@ public class indentDAO implements indentAbstractDAO {
             preparedStatement.setString(4, indent.getMessage());
             preparedStatement.setLong(5, indent.getId());
 
-            flag = preparedStatement.executeUpdate(update_sql);
+            flag = preparedStatement.executeUpdate();
         } catch (SQLException e) {
             throw new RuntimeException(e);
         }
@@ -102,8 +111,7 @@ public class indentDAO implements indentAbstractDAO {
         try {
             connection = getConnection();
             preparedStatement = connection.prepareStatement(selectAll_sql);
-
+            resultSet = preparedStatement.executeQuery();
-            resultSet = preparedStatement.executeQuery(selectAll_sql);
 
             while (resultSet.next()) {
                 indent = new Indent();
@@ -129,7 +137,7 @@ public class indentDAO implements indentAbstractDAO {
             connection = getConnection();
             preparedStatement = connection.prepareStatement(selectID_sql);
             preparedStatement.setLong(1, id);
-            preparedStatement.executeQuery(selectID_sql);
+            resultSet = preparedStatement.executeQuery();
 
             while (resultSet.next()) {
                 indent = new Indent();
@@ -146,8 +154,13 @@ public class indentDAO implements indentAbstractDAO {
 
     private void SetAttribute(@NotNull Indent indent, @NotNull ResultSet rs) throws SQLException {
         indent.setId(rs.getLong("id"));
-        indent.setUserID((Users) rs.getObject("userID"));
+
-        indent.setMerchantsID((Merchants) rs.getObject("merchantsID"));
+        //结果集是 Long 型数据
+        userDAO user = new userDAO();
+        indent.setUserID(user.searchID(rs.getLong("userID")));
+        merchantsDAO merchant = new merchantsDAO();
+        indent.setMerchantsID(merchant.searchID(rs.getLong("merchantsID")));
+
         indent.setAllPrice(rs.getFloat("allPrice"));
         indent.setMessage(rs.getString("message"));
         indent.setCreatedDate(rs.getDate("createDate"));

src/main/java/dao/specification/indentItemDAO.java

@@ -18,11 +18,12 @@ public class indentItemDAO implements indentItemAbstractDAO {
     private PreparedStatement preparedStatement = null;
     private ResultSet resultSet = null;
 
+    //TODO 这里逻辑不对，用户点菜的时候不能自己设置折扣，可能需要再多一个实体才可以
     @Override
     public int insert(@NotNull IndentItem IItem) {
         int flag;
         String insert_sql = "insert into indentItem(name, initialPrice, discount, " +
-                "finalPrice, description, indentID) values (?,?,?,?,?,null)";
+                "finalPrice, description, indentID) values (?,?,?,?,?,?)";
         try {
             connection = getConnection();
             preparedStatement = connection.prepareStatement(insert_sql);
@@ -30,23 +31,25 @@ public class indentItemDAO implements indentItemAbstractDAO {
             preparedStatement.setString(1, IItem.getName());
             preparedStatement.setFloat(2, IItem.getInitialPrice());
             //折扣和折后价null值的判断
-            if (IItem.getDiscount().compareTo(0F) > 0 //折扣和0比较,返回1为合法值
+            if (IItem.getDiscount().compareTo(0F) > 0) {//折扣和0比较,返回1为合法值
-                    || !String.valueOf(IItem.getDiscount()).equals(" ")) {
                 preparedStatement.setFloat(3, IItem.getDiscount());
                 IItem.setFinalPrice(IItem.getInitialPrice() * IItem.getDiscount());//计算最终价格
                 preparedStatement.setFloat(4, IItem.getFinalPrice());
             } else {
                 preparedStatement.setNull(3, Types.FLOAT);
-                preparedStatement.setNull(4, Types.FLOAT);
+                //最终价格等于初始价格
+                preparedStatement.setFloat(4, IItem.getInitialPrice());
             }
             //描述
-            if (!IItem.getDescription().equals(" ")) {
+            if (IItem.getDescription() != null && !IItem.getDescription().equals(" ")) {
                 preparedStatement.setString(5, IItem.getDescription());
             } else {
                 preparedStatement.setNull(5, Types.NVARCHAR);
             }
+            //菜单ID
+            preparedStatement.setObject(6, IItem.getIndentID().getId());
 
-            flag = preparedStatement.executeUpdate(insert_sql);
+            flag = preparedStatement.executeUpdate();
         } catch (SQLException e) {
             throw new RuntimeException(e);
         } finally {
@@ -55,23 +58,10 @@ public class indentItemDAO implements indentItemAbstractDAO {
         return flag;
     }
 
+
     @Override
     public int delete(@NotNull IndentItem IItem) {
         String delete_sql = "delete from indentItem where id = ?";
-//        int flag;
-//        try {
-//            connection = getConnection();
-//            preparedStatement = connection.prepareStatement(delete_sql);
-//            preparedStatement.setLong(1, item.getId());
-//            flag = preparedStatement.executeUpdate(delete_sql);
-//
-//        } catch (SQLException e) {
-//            throw new RuntimeException(e);
-//        } finally {
-//            close(connection,preparedStatement,resultSet);
-//        }
-//
-//        return flag;
         return Delete
                 (connection, preparedStatement, resultSet, delete_sql, IItem.getId());
     }

src/main/java/dao/specification/merchantsDAO.java

@@ -57,19 +57,6 @@ public class merchantsDAO implements merchantsAbstractDAO {
     @Override
     public int delete(@NotNull Merchants merchants) {
         String delete_sql = "delete from Merchants where id = ?";
-//        int flag = 0;
-//        try {
-//            connection = getConnection();
-//
-//            preparedStatement = connection.prepareStatement(delete_sql);
-//            preparedStatement.setLong(1, merchants.getId());
-//
-//            flag = preparedStatement.executeUpdate();
-//        } catch (Exception e) {
-//            e.printStackTrace();
-//        } finally {
-//            close(connection, preparedStatement, resultSet);
-//        }
         return Delete
                 (connection, preparedStatement, resultSet, delete_sql, merchants.getId());
     }
@@ -92,7 +79,7 @@ public class merchantsDAO implements merchantsAbstractDAO {
             preparedStatement.setString(4, merchants.getPhoneNumber());
             preparedStatement.setLong(5, merchants.getId());
 
-            flag = preparedStatement.executeUpdate(update_sql);
+            flag = preparedStatement.executeUpdate();
         } catch (SQLException e) {
             throw new RuntimeException(e);
         }

src/main/java/dao/specification/userDAO.java

@@ -48,19 +48,6 @@ public class userDAO implements userAbstractDAO {
     @Override
     public int delete(@NotNull Users user) {
         String delete_sql = "delete from Users where id=?";
-//        int flag;
-//        try {
-//            connection = getConnection();
-//
-//            preparedStatement = connection.prepareStatement(delete_sql);
-//            preparedStatement.setLong(1, users.getId());
-//
-//            flag = preparedStatement.executeUpdate();
-//        } catch (SQLException e) {
-//            throw new RuntimeException(e);
-//        } finally {
-//            close(connection, preparedStatement, resultSet);
-//        }
 
         return Delete
                 (connection, preparedStatement, resultSet, delete_sql, user.getId());

src/main/java/entities/Indent.java

@@ -11,7 +11,7 @@ public class Indent {
 
     private Float allPrice;//菜品总价
     Date createdDate;//订单创建时间
-    String message;//下单备注
+    private String message;//下单备注
 
     private Users userID;//外键，下单用户ID
     private Merchants merchantsID;//外键，餐厅ID

src/main/java/entities/dto/Login.java

@@ -0,0 +1,48 @@
+package entities.dto;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.util.Scanner;
+
+import static util.SQLDatabaseConnection.close;
+import static util.SQLDatabaseConnection.getConnection;
+import static view.CommonUse.CreateIndent;
+
+public class Login {
+    static Connection conn = null;
+    static PreparedStatement ps = null;
+    static ResultSet rs = null;
+
+    public static boolean UserLogin(Long id) {
+        boolean flag = false;
+        String sql = "select password from Users where id = ?";
+
+        try {
+            conn = getConnection();
+            ps = conn.prepareStatement(sql);
+            ps.setLong(1, id);
+            rs = ps.executeQuery();
+
+            if (!rs.next()) {
+                //TODO ID输入不正确后重新输入，但是这个函数调用的太乱了，有点偷懒了，有机会改一下
+                System.out.println("查无此人");
+                CreateIndent();//跳转到登录选项重新输入ID
+            }
+
+            Scanner reader = new Scanner(System.in);
+            System.out.println("请输入登录密码：");
+            String password = reader.nextLine();
+            while (rs.next()) {
+                flag = password.equals(rs.getString("password"));
+            }
+
+
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        } finally {
+            close(conn, ps, rs);
+        }
+        return flag;
+    }
+}

src/main/java/util/Toolset.java

@@ -94,5 +94,4 @@ public class Toolset {
         return fields;
     }
 
-
 }

src/main/java/view/CommonUse.java

@@ -0,0 +1,56 @@
+package view;
+
+import java.util.Scanner;
+
+import static entities.dto.Login.UserLogin;
+
+//用户日常使用
+public class CommonUse {
+    public void use(int chose) {
+        switch (chose) {
+            case 0 -> System.exit(0);
+            case 1 -> CreateIndent();
+        }
+
+
+    }
+
+    //TODO 这个部分和 Login 有点重合，代码可以重构一下
+    public static void CreateIndent() {
+        Scanner reader = new Scanner(System.in);
+        Long userID = null;
+        System.out.println("请输入你的ID:");
+        //异常处理
+        try {
+            userID = reader.nextLong();
+        } catch (Exception e) {
+            System.out.println("你输入的ID不正确!\n你想退出吗？(Y/n)");
+            reader = new Scanner(System.in);
+            String s = reader.next();
+            if (s.equals("Y")) {
+                System.exit(0);
+            } else {
+                CreateIndent();
+            }
+
+        }
+        while (true) {
+            //密码判断
+            boolean flag = UserLogin(userID);
+            if (flag) {
+                IndentView iv = new IndentView();
+                iv.CreateIndent(userID);
+                break;
+            } else {
+                System.out.println("你输入的密码不正确~\n你想退出吗？(Y/n)");
+                reader = new Scanner(System.in);
+                String s = reader.next();
+                if (s.equals("Y")) {
+                    System.exit(0);
+                }
+            }
+        }
+
+    }
+}
+

src/main/java/view/IndentItemView.java

@@ -7,6 +7,7 @@ import entities.IndentItem;
 import util.Toolset;
 
 import java.util.Date;
+import java.util.Objects;
 import java.util.Scanner;
 
 public class IndentItemView {
@@ -14,34 +15,41 @@ public class IndentItemView {
 
         switch (chose) {
             case 0 -> System.exit(0);
-            case 1 -> CreateIItem();
+            case 1 -> DeleteIItem();
-            case 2 -> DeleteIItem();
+            case 2 -> UpdateIItem();
-            case 3 -> UpdateIItem();
+            case 3 -> SearchIItem(true);//查询全部
-            case 4 -> SearchIItem(true);//查询全部
+            case 4 -> SearchIItem(false);//查询ID
-            case 5 -> SearchIItem(false);//查询ID
         }
     }
 
-    private void CreateIItem() {
+    public void CreateIItem(Long indentID) {
         indentItemAbstractDAO DML_insert = new indentItemDAO();
         Scanner reader = new Scanner(System.in);
-        IndentItem IItem = new IndentItem();
+        System.out.println("请输入：菜名|初始价格|折扣|描述 退出请输入end");
 
-        System.out.println("请输入：菜名|初始价格|折扣|描述|菜单ID");
+        int flag = 0;
+        while (!reader.hasNext("end")) {
+            IndentItem IItem = new IndentItem();
             //菜名
-        IItem.setName(reader.nextLine());
+            IItem.setName(reader.next());
             //初始价格
             IItem.setInitialPrice(reader.nextFloat());
             //折扣
+            if (reader.hasNextFloat()) {
                 IItem.setDiscount(reader.nextFloat());
+            } else {
+                IItem.setDiscount(-1F);
+            }
             //描述
+            if (!reader.hasNext("end") && !Objects.equals(reader.nextLine(), " ")) {
                 IItem.setDescription(reader.nextLine());
+            }
             //菜单ID
-        Long indentID = reader.nextLong();
             indentDAO indent = new indentDAO();
             IItem.setIndentID(indent.searchID(indentID));
 
-        int flag = DML_insert.insert(IItem);
+            flag += DML_insert.insert(IItem);
+        }
         System.out.println(flag + "行受影响");
     }
 

src/main/java/view/IndentView.java

@@ -5,45 +5,40 @@ import dao.specification.indentDAO;
 import dao.specification.merchantsDAO;
 import dao.specification.userDAO;
 import entities.Indent;
-import entities.IndentItem;
 import entities.Users;
 import util.Toolset;
 
+import java.util.List;
 import java.util.Scanner;
 
 public class IndentView {
     public void IndentDB(int chose) throws IllegalAccessException {
 
-
-        //TODO 这个交互有点难搞
         switch (chose) {
             case 0 -> System.exit(0);
-            case 1 -> CreateIndent();
+            case 1 -> DeleteIndent();
-            case 2 -> DeleteIndent();
+            case 2 -> System.out.println("这个功能还在修复呢，小主先看看其它功能吧~");//UpdateIndent();
-            case 3 -> UpdateIndent();
+            case 3 -> SearchIndent(true);//查询全部
-            case 4 -> SearchIndent(true);//查询全部
+            case 4 -> SearchIndent(false);//按ID查询
-            case 5 -> SearchIndent(false);//按ID查询
         }
     }
 
-    private void CreateIndent() {
+    public void CreateIndent(Long userID) {
-        indentAbstractDAO DML_insert = new indentDAO();
         Scanner reader = new Scanner(System.in);
         Indent indent = new Indent();
-        System.out.println("请输入：下单用户id|餐厅id|总价|备注");
+
+        System.out.println("请输入：下单餐厅id|备注");
         //用户
-        Long userID = reader.nextLong();
         userDAO user = new userDAO();
         indent.setUserID(user.searchID(userID));
         //餐厅
         Long merchantID = reader.nextLong();
         merchantsDAO merchant = new merchantsDAO();
         indent.setMerchantsID(merchant.searchID(merchantID));
-        //总价
-        indent.setAllPrice(reader.nextFloat());
         //备注
         indent.setMessage(reader.nextLine());
 
+        indentAbstractDAO DML_insert = new indentDAO();
         int flag = DML_insert.insert(indent);
         System.out.println(flag + "行受影响");
     }
@@ -53,7 +48,7 @@ public class IndentView {
         Scanner reader = new Scanner(System.in);
         Indent indent = new Indent();
 
-        System.out.println("请输入你要删除的ID");
+        System.out.println("请输入你要删除的订单ID");
         indent.setId(reader.nextLong());
 
         int flag = DML_delete.delete(indent);
@@ -79,4 +74,5 @@ public class IndentView {
             System.out.println(Toolset.table(Indent.class, indent));
         }
     }
+
 }

src/main/java/view/MerchantsView.java

@@ -7,6 +7,7 @@ import util.Toolset;
 
 import java.util.Scanner;
 
+//商家管理
 public class MerchantsView {
     //商家数据库操作
     protected void merchantsDB(int chose) throws IllegalAccessException {
@@ -14,7 +15,7 @@ public class MerchantsView {
             case 0 -> System.exit(0);
             case 1 -> CreateMerchant();
             case 2 -> DeleteMerchant();
-            case 3 -> UpdateMerchant();
+            case 3 -> System.out.println("这个功能还在修复呢，小主先看看其它功能吧~");//UpdateMerchant();
             case 4 -> SearchMerchant(true);//查询所有
             case 5 -> SearchMerchant(false);//查询ID
         }
@@ -44,7 +45,8 @@ public class MerchantsView {
         System.out.println(flag + "行受影响");
     }
 
-    private void UpdateMerchant() {//@FIXME update没有传值
+    //@FIXME update没有传值
+    private void UpdateMerchant() {
         Merchants merchants = new Merchants();
         Scanner reader = new Scanner(System.in);
 

src/main/java/view/UserView.java

@@ -7,6 +7,7 @@ import util.Toolset;
 
 import java.util.Scanner;
 
+//TODO 用户密码查找和修改
 public class UserView {
     //用户数据库操作
     protected void userDB(int chose) throws IllegalAccessException {
@@ -22,7 +23,7 @@ public class UserView {
         }
     }
 
-    private void CreateUser() {//@TODO 非换行输入
+    private void CreateUser() {//TODO 非换行输入
         Scanner reader = new Scanner(System.in);
         userAbstractDAO DML_insert = new userDAO();
 

src/main/java/view/shellUI.java

@@ -10,7 +10,6 @@ public class shellUI {
                 -----------------后台管理系统---------------
                 ------------------------------------------
                 """);
-
         Chose();
     }
 
@@ -18,7 +17,9 @@ public class shellUI {
     private static void Chose() throws IllegalAccessException {
         System.out.println("""
                 请选择你要进行的功能:
-                1.商家管理\t2.用户管理\t3.订单管理\t0.退出
+                1.商家管理\t2.用户管理\t3.订单管理
+                4.我是用户，我要登录\t
+                0.退出
                 """);
 
         switch (Toolset.option()) {
@@ -28,7 +29,8 @@ public class shellUI {
                 System.out.println("""
                         请选择你想使用的功能:
                         1.新建商家\t\t2.删除商家\t\t3.更新信息
-                        4.查询所有商家\t5.根据ID查询商家\t0.退出
+                        4.查询所有商家\t5.根据ID查询商家
+                        0.退出
                         """);
                 MerchantsView merchants_view = new MerchantsView();
                 merchants_view.merchantsDB(Toolset.option());
@@ -39,7 +41,8 @@ public class shellUI {
                 System.out.println("""
                         请选择你想使用的功能:
                         1.新建用户\t\t2.删除用户\t\t3.更新信息
-                        4.查询所有用户\t5.根据ID查询用户\t0.退出
+                        4.查询所有用户\t5.根据ID查询用户
+                        0.退出
                         """);
                 UserView user_view = new UserView();
                 user_view.userDB(Toolset.option());
@@ -49,20 +52,26 @@ public class shellUI {
             case 3 -> {
                 System.out.println("""
                         请选择你想使用的功能:
-                        1.新建订单\t\t2.删除订单\t\t3.更新订单
+                        1.删除订单\t\t2.更新订单
-                        4.查询所有订单\t5.根据ID查询订单\t0.退出
+                        3.查询所有订单\t4.根据ID查询订单
+                        0.退出
                         """);
                 IndentView indent_view = new IndentView();
                 indent_view.IndentDB(Toolset.option());
                 Chose();
             }
-            //订单菜品
+            //下单
             case 4 -> {
-
+                System.out.println("""
+                        请选择你想使用的功能:
+                        1.点菜
+                        0.退出
+                        其它功能还在开发中呢，请耐心等待哦~
+                        """);
+                CommonUse user = new CommonUse();
+                user.use(Toolset.option());
+                Chose();
             }
         }
-
-
     }
-
 }