diff --git a/README.md b/README.md index cd3c994..403e326 100644 --- a/README.md +++ b/README.md @@ -1,12 +1,12 @@ # Homework-entities *网安实训作业* -# 20230316 +# 2023-03-16 - 初始化项目 -# 20230322 +# 2023-03-22 - 增加实体类 - 删除.idea文件 -# 20230326 +# 2023-03-26 - 完善实体类 - 我靠，折腾了一晚上，提交了十几次，终于提交时把.idea这个文件给忽略了 - 方法：在`.gitgnore`文件中添加 @@ -19,7 +19,20 @@ - `update`一下远端项目 - `push`代码 - 我好菜。。。 -# 20230327 +# 2023-03-27 - 完善了一下实体类，发现商家那一部分漏了一点东西，给它补上了 - 另外就是为什么`.idea`文件我已经取消提交了，为啥本地的`commit`里面还会有有啊……无语了 -- 是不是跟`git`八字不合。。。 \ No newline at end of file +- 是不是跟`git`八字不合。。。 +# 2023-03-29 +- 添加`JDBC`驱动，连接数据库 +# 2023-05-04 +- 创建数据库表，并成功连接 +- 调整实体类与数据库对应的结构，修改外键 +- 调整项目结构 +- 完成DAO层抽象接口 +- 完成MerchantsDAO和UserDAO具体功能 +# 2023-05-05 +- Debug MerchantsDAO 按ID查询功能 +- 搭建shellUI的大体框架 +- 完成UserDAO具体功能 +- 第一次测试 \ No newline at end of file diff --git a/pom.xml b/pom.xml index fe2baff..ba0c763 100644 --- a/pom.xml +++ b/pom.xml @@ -1,36 +1,47 @@ - 4.0.0 + xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> + 4.0.0 - org.example - JavaEle - 1.0-SNAPSHOT - jar + org.example + JavaElm + 1.0-SNAPSHOT + jar - JavaEle - https://maven.apache.org + JavaEle + https://maven.apache.org - - UTF-8 - 17 - 17 - 17 - + + UTF-8 + 17.0.6 + 17.0.6 + 17.0.6 + - - - junit - junit - 4.13.2 - test - + + + junit + junit + 4.13.2 + test + - - org.projectlombok - lombok - true - 1.18.26 - + + org.projectlombok + lombok + true + 1.18.26 + - + + com.microsoft.sqlserver + mssql-jdbc + 12.2.0.jre11 + + + org.jetbrains + annotations + 20.1.0 + compile + + diff --git a/src/main/java/dao/IndentAbstractDAO.java b/src/main/java/dao/IndentAbstractDAO.java new file mode 100644 index 0000000..ef85f83 --- /dev/null +++ b/src/main/java/dao/IndentAbstractDAO.java @@ -0,0 +1,4 @@ +package dao; + +public interface IndentAbstractDAO { +} diff --git a/src/main/java/dao/abstractDAO.java b/src/main/java/dao/abstractDAO.java new file mode 100644 index 0000000..f167625 --- /dev/null +++ b/src/main/java/dao/abstractDAO.java @@ -0,0 +1,13 @@ +package dao; + +import java.util.List; + +public interface abstractDAO { + int insert(T t); //增 + + int delete(T t);//删 + + int update(T t);//改 + + List search(T t);//查 +} diff --git a/src/main/java/dao/indentItemAbstractDAO.java b/src/main/java/dao/indentItemAbstractDAO.java new file mode 100644 index 0000000..3e41e28 --- /dev/null +++ b/src/main/java/dao/indentItemAbstractDAO.java @@ -0,0 +1,7 @@ +package dao; + +import entities.indentItem; + +public interface indentItemAbstractDAO extends abstractDAO { + +} diff --git a/src/main/java/dao/merchantsAbstractDAO.java b/src/main/java/dao/merchantsAbstractDAO.java new file mode 100644 index 0000000..6e27f93 --- /dev/null +++ b/src/main/java/dao/merchantsAbstractDAO.java @@ -0,0 +1,8 @@ +package dao; + +import entities.Merchants; + +public interface merchantsAbstractDAO extends abstractDAO { + //根据id查询商家 + Merchants searchMerchantByID(Long id); +} diff --git a/src/main/java/dao/specification/merchantsDAO.java b/src/main/java/dao/specification/merchantsDAO.java new file mode 100644 index 0000000..9c222c7 --- /dev/null +++ b/src/main/java/dao/specification/merchantsDAO.java @@ -0,0 +1,136 @@ +package dao.specification; + +import dao.merchantsAbstractDAO; +import org.jetbrains.annotations.NotNull; +import entities.Merchants; + +import java.util.ArrayList; +import java.util.List; +import java.sql.*; + +import static util.SQLDatabaseConnection.close; +import static util.SQLDatabaseConnection.getConnection; + +public class merchantsDAO implements merchantsAbstractDAO { + private Connection connection = null; + private PreparedStatement preparedStatement = null; + private ResultSet resultSet = null; + + //通过id寻找商家 + @Override + public Merchants searchMerchantByID(Long id) { + Merchants merchants = null; + String selectID_sql = "select * from Merchants where id = ?"; + try { + connection = getConnection(); + preparedStatement = connection.prepareStatement(selectID_sql); + preparedStatement.setLong(1, id); + resultSet = preparedStatement.executeQuery(); + + while (resultSet.next()) { + merchants = new Merchants(); + merchants.setId(resultSet.getLong("id")); + merchants.setName(resultSet.getString("name")); + merchants.setAddress(resultSet.getString("address")); + merchants.setDescription(resultSet.getString("description")); + merchants.setPhoneNumber(resultSet.getString("phoneNumber")); + } + } catch (SQLException e) { + throw new RuntimeException(e); + } finally { + close(connection, preparedStatement, resultSet); + } + return merchants; + } + + //新加商家 + @Override + public int insert(@NotNull Merchants merchants) { + int flag = 0; + try { + connection = getConnection(); + String insert_sql = "insert into Merchants(name,address,description,phoneNumber) values(?,?,?,?)"; + preparedStatement = connection.prepareStatement(insert_sql); + + preparedStatement.setString(1, merchants.getName()); + preparedStatement.setString(2, merchants.getAddress()); + preparedStatement.setString(3, merchants.getDescription()); + preparedStatement.setString(4, merchants.getPhoneNumber()); + } catch (SQLException e) { + throw new RuntimeException(e); + } finally { + close(connection, preparedStatement, resultSet); + } + return flag; + } + + //删除商家 + @Override + public int delete(Merchants merchants) { + int flag = 0; + try { + connection = getConnection(); + String delete_sql = "delete from Merchants where id = ?"; + preparedStatement = connection.prepareStatement(delete_sql); + preparedStatement.setLong(1, merchants.getId()); + flag = preparedStatement.executeUpdate(); + } catch (Exception e) { + e.printStackTrace(); + } finally { + close(connection, preparedStatement, resultSet); + } + return flag; + } + + //更新信息 + @Override + public int update(@NotNull Merchants merchants) { + int flag; + String update_sql = "update Merchants " + + "set name = ?, address = ?, description = ?, phoneNumber= ? " + + "where id = ?"; + try { + connection = getConnection(); + preparedStatement = connection.prepareStatement(update_sql); + + preparedStatement.setString(1, merchants.getName()); + preparedStatement.setString(2, merchants.getAddress()); + preparedStatement.setString(3, merchants.getDescription()); + preparedStatement.setString(4, merchants.getPhoneNumber()); + preparedStatement.setLong(5, merchants.getId()); + + flag = preparedStatement.executeUpdate(update_sql); + } catch (SQLException e) { + throw new RuntimeException(e); + } + return flag; + } + + //查询所有商家 + @Override + public List search(Merchants merchants) { + List list = new ArrayList<>(); + try { + connection = getConnection(); + String selectAll_sql = "select * from Merchants"; + preparedStatement = connection.prepareStatement(selectAll_sql); + resultSet = preparedStatement.executeQuery(); + + while (resultSet.next()) { + merchants.setId(resultSet.getLong("id")); + merchants.setName(resultSet.getString("name")); + merchants.setPhoneNumber(resultSet.getString("phoneNumber")); + merchants.setAddress(resultSet.getString("address")); + merchants.setDescription(resultSet.getString("description")); + list.add(merchants); + } + + } catch (SQLException e) { + throw new RuntimeException(e); + } finally { + close(connection, preparedStatement, resultSet); + } + return list; + } + +} diff --git a/src/main/java/dao/specification/userDAO.java b/src/main/java/dao/specification/userDAO.java new file mode 100644 index 0000000..892a061 --- /dev/null +++ b/src/main/java/dao/specification/userDAO.java @@ -0,0 +1,119 @@ +package dao.specification; + +import dao.userAbstractDAO; +import entities.Users; +import org.jetbrains.annotations.NotNull; + +import java.sql.Connection; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.util.ArrayList; +import java.util.List; + +import static util.SQLDatabaseConnection.getConnection; +import static util.SQLDatabaseConnection.close; + +public class userDAO implements userAbstractDAO { + private Connection connection = null; + private PreparedStatement preparedStatement = null; + private ResultSet resultSet = null; + + //@TODO UserDAO 插入功能 + @Override + public int insert(Users users) { + + return 0; + } + + @Override + public int delete(@NotNull Users users) { + int flag; + try { + connection = getConnection(); + String delete_sql = "delete from Users where id=?"; + 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 flag; + } + + @Override + public int update(@NotNull Users users) { + int flag = 0; + try { + connection = getConnection(); + String update_sql = "update Users " + + "set name = ?, phoneNumber = ?, address = ? " + + "where id = ?"; + preparedStatement = connection.prepareStatement(update_sql); + preparedStatement.setString(1,users.getName()); + preparedStatement.setString(2,users.getPhoneNumber()); + preparedStatement.setString(3,users.getAddress()); + preparedStatement.setLong(4,users.getId()); + + } catch (SQLException e) { + throw new RuntimeException(e); + } + return flag; + } + + //查询所有用户 + @Override + public List search(Users users) { + List list = new ArrayList<>(); + + try { + connection = getConnection(); + String selectAll_sql = "select * from Users"; + preparedStatement = connection.prepareStatement(selectAll_sql); + preparedStatement.executeQuery(); + + while (resultSet.next()) { + users.setName(resultSet.getString("name")); + users.setPhoneNumber(resultSet.getString("phoneNumber")); + users.setAddress(resultSet.getString("address")); + list.add(users); + } + } catch (SQLException e) { + throw new RuntimeException(e); + } finally { + close(connection, preparedStatement, resultSet); + } + return list; + } + + //用ID查询用户 + @Override + public Users searchUsersByID(Long id) { + Users user = null; + String selectID_sql = "select * from Users where id = ?"; + try { + connection = getConnection(); + preparedStatement = connection.prepareStatement(selectID_sql); + preparedStatement.setLong(1, id); + resultSet = preparedStatement.executeQuery(); + + while (resultSet.next()) { + user = new Users(); + user.setId(resultSet.getLong("id")); + user.setName(resultSet.getString("name")); + user.setPhoneNumber(resultSet.getString("phoneNumber")); + user.setAddress(resultSet.getString("address")); + } + + } catch (SQLException e) { + throw new RuntimeException(e); + } finally { + close(connection, preparedStatement, resultSet); + } + return user; + } +} diff --git a/src/main/java/dao/userAbstractDAO.java b/src/main/java/dao/userAbstractDAO.java new file mode 100644 index 0000000..740ff21 --- /dev/null +++ b/src/main/java/dao/userAbstractDAO.java @@ -0,0 +1,8 @@ +package dao; + +import entities.Users; + +public interface userAbstractDAO extends abstractDAO { + //根据ID查询用户 + Users searchUsersByID(Long id); +} diff --git a/src/main/java/entities/Indent.java b/src/main/java/entities/Indent.java index bf4e63f..e9aaf6a 100644 --- a/src/main/java/entities/Indent.java +++ b/src/main/java/entities/Indent.java @@ -2,12 +2,17 @@ package entities; import lombok.Data; +import java.util.Date; + //订单类 @Data public class Indent { private Long id;//订单ID - private indentItem indentItemID;//外键，菜品ID + private Users userID;//外键，下单用户ID private Merchants merchantsID;//外键，餐厅ID + private Float allPrice;//菜品总价 + Date createdDate;//订单创建时间 + String message;//下单备注 } diff --git a/src/main/java/entities/Merchants.java b/src/main/java/entities/Merchants.java index 85cdd7e..3785e1b 100644 --- a/src/main/java/entities/Merchants.java +++ b/src/main/java/entities/Merchants.java @@ -5,10 +5,19 @@ import lombok.Data; //商家类 @Data public class Merchants { - private Long id;//商家编号 + private Long id;//主键,商家编号 + private String name;//店铺名字 private String address;//店铺地址 private String description;//店铺描述 private String phoneNumber;//商家联系方式 - private Indent IndentID;//外键，订单ID + + @Override + public String toString() { + return "\n商家编号：" + this.id + + "\n店铺名字：" + this.name + + "\n店铺地址：" + this.address + + "\n店铺描述：" + this.description + + "\n联系方式：" + this.phoneNumber; + } } diff --git a/src/main/java/entities/Users.java b/src/main/java/entities/Users.java index ce8d221..e3d54c8 100644 --- a/src/main/java/entities/Users.java +++ b/src/main/java/entities/Users.java @@ -5,8 +5,18 @@ import lombok.Data; //用户类 @Data public class Users { - private Long id;//用户ID + private Long id;//主键，用户ID + private String password;//用户密码 private String name;//用户姓名 private String phoneNumber;//用户联系方式 private String address;//家庭住址 + + @Override + public String toString() { + return "\n用户编号：" + this.id + + "\n用户姓名：" + this.name + + "\n家庭地址：" + this.address + + "\n联系方式：" + this.phoneNumber; + } + } diff --git a/src/main/java/entities/indentItem.java b/src/main/java/entities/indentItem.java index 1786401..74ca446 100644 --- a/src/main/java/entities/indentItem.java +++ b/src/main/java/entities/indentItem.java @@ -4,10 +4,12 @@ import lombok.Data; //订单中的菜品 @Data public class indentItem { - private Long id;//菜品ID + private Long id;//主键，菜品ID private String name;//菜品名字 private Float initialPrice;//菜品原价 private Float discount;//折扣 private Float finalPrice;//最终价格 private String description;//菜品描述 + + private Indent indentID;//订单ID } \ No newline at end of file diff --git a/src/main/java/example/App.java b/src/main/java/example/App.java index fba0024..9a87d1d 100644 --- a/src/main/java/example/App.java +++ b/src/main/java/example/App.java @@ -1,7 +1,9 @@ package example; +import entities.*; + public class App { public static void main(String[] args) { - System.out.println("Hello World!"); + System.out.println("你好世界！Hello World!"); } } diff --git a/src/main/java/example/shellUI.java b/src/main/java/example/shellUI.java new file mode 100644 index 0000000..f3fb82b --- /dev/null +++ b/src/main/java/example/shellUI.java @@ -0,0 +1,55 @@ +package example; + +import com.microsoft.sqlserver.jdbc.StringUtils; +import dao.*; +import dao.specification.*; + +import java.util.Scanner; + +public class shellUI { + public static void main(String[] args) { + run(); + } + + public static void run() { + Scanner reader = new Scanner(System.in); + System.out.println(""" + ------------------------------------------ + ----------------后台管理系统---------------- + ------------------------------------------ + """); + System.out.println(""" + 请选择你要进行的功能 + 1.商家管理 + 2.用户管理 + """); + // + int chose1; + while (true) { + if (reader.hasNextInt()) { + chose1 = reader.nextInt(); + break; + } else { + System.out.println("你的输入有误，请重新输入！"); + } + } + //@TODO 2023-05-05 shellUI功能选择 + int chose2; + switch (chose1) { + case 1: + System.out.println(""" + 请选择你想使用的功能： + 1. + 2. + 3. + 4. + 5. + """); + + break; + case 2: + } + + + } +} diff --git a/src/main/java/util/SQLDatabaseConnection.java b/src/main/java/util/SQLDatabaseConnection.java new file mode 100644 index 0000000..d44d04c --- /dev/null +++ b/src/main/java/util/SQLDatabaseConnection.java @@ -0,0 +1,47 @@ +package util; + +import java.sql.*; + +public class SQLDatabaseConnection { + // Connect to database + private static final String connectionUrl = + "jdbc:sqlserver://152.136.182.168:1433;" + + "database=Elm;" + + "user=guest@152.136.182.168;" + + "password=20230504#Guest;" + + "encrypt=true;" + + "trustServerCertificate=false;" + + "loginTimeout=30;"; + + public static Connection getConnection() { + Connection connection = null; + try { + // Code here. + connection = DriverManager.getConnection(connectionUrl); + } + // Handle any errors that may have occurred. + catch (SQLException e) { + e.printStackTrace(); + } + return connection; + } + + //释放资源 + public static void close(Connection connection, Statement statement, ResultSet resultSet) { + try { + if (resultSet != null) { + resultSet.close(); + } + if (statement != null) { + statement.close(); + } + if (connection != null) { + connection.close(); + } + } catch (Exception e) { + e.printStackTrace(); + } + + } + +}