UserDAO以及MerchantsDAO抽象接口的实现,ShellUI的部分功能

This commit is contained in:
twinkle255 2023-05-05 14:18:39 +08:00
parent 460f276596
commit 135e2156dd
16 changed files with 488 additions and 39 deletions

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@ -1,12 +1,12 @@
# Homework-entities # Homework-entities
*网安实训作业* *网安实训作业*
# 20230316 # 2023-03-16
- 初始化项目 - 初始化项目
# 20230322 # 2023-03-22
- 增加实体类 - 增加实体类
- 删除.idea文件 - 删除.idea文件
# 20230326 # 2023-03-26
- 完善实体类 - 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 - 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 - 方法:在`.gitgnore`文件中添加
@ -19,7 +19,20 @@
- `update`一下远端项目 - `update`一下远端项目
- `push`代码 - `push`代码
- 我好菜。。。 - 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 - 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 - 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。。。 - 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

19
pom.xml
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@ -3,7 +3,7 @@
<modelVersion>4.0.0</modelVersion> <modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId> <groupId>org.example</groupId>
<artifactId>JavaEle</artifactId> <artifactId>JavaElm</artifactId>
<version>1.0-SNAPSHOT</version> <version>1.0-SNAPSHOT</version>
<packaging>jar</packaging> <packaging>jar</packaging>
@ -12,9 +12,9 @@
<properties> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>17</maven.compiler.source> <maven.compiler.source>17.0.6</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target> <maven.compiler.target>17.0.6</maven.compiler.target>
<java.version>17</java.version> <java.version>17.0.6</java.version>
</properties> </properties>
<dependencies> <dependencies>
@ -32,5 +32,16 @@
<version>1.18.26</version> <version>1.18.26</version>
</dependency> </dependency>
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>12.2.0.jre11</version>
</dependency>
<dependency>
<groupId>org.jetbrains</groupId>
<artifactId>annotations</artifactId>
<version>20.1.0</version>
<scope>compile</scope>
</dependency>
</dependencies> </dependencies>
</project> </project>

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@ -0,0 +1,4 @@
package dao;
public interface IndentAbstractDAO {
}

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package dao;
import java.util.List;
public interface abstractDAO<T> {
int insert(T t); //
int delete(T t);//
int update(T t);//
List<T> search(T t);//
}

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package dao;
import entities.indentItem;
public interface indentItemAbstractDAO extends abstractDAO<indentItem> {
}

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package dao;
import entities.Merchants;
public interface merchantsAbstractDAO extends abstractDAO<Merchants> {
//根据id查询商家
Merchants searchMerchantByID(Long id);
}

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@ -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<Merchants> search(Merchants merchants) {
List<Merchants> 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;
}
}

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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<Users> search(Users users) {
List<Users> 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;
}
}

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@ -0,0 +1,8 @@
package dao;
import entities.Users;
public interface userAbstractDAO extends abstractDAO<Users> {
//根据ID查询用户
Users searchUsersByID(Long id);
}

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@ -2,12 +2,17 @@ package entities;
import lombok.Data; import lombok.Data;
import java.util.Date;
//订单类 //订单类
@Data @Data
public class Indent { public class Indent {
private Long id;//订单ID 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 Users userID;//外键下单用户ID
private Merchants merchantsID;//外键餐厅ID private Merchants merchantsID;//外键餐厅ID
private Float allPrice;//菜品总价 private Float allPrice;//菜品总价
Date createdDate;//订单创建时间
String message;//下单备注
} }

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@ -5,10 +5,19 @@ import lombok.Data;
//商家类 //商家类
@Data @Data
public class Merchants { 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 name;//店铺名字
private String address;//店铺地址 private String address;//店铺地址
private String description;//店铺描述 private String description;//店铺描述
private String phoneNumber;//商家联系方式 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;
}
} }

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@ -5,8 +5,18 @@ import lombok.Data;
//用户类 //用户类
@Data @Data
public class Users { 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 name;//用户姓名
private String phoneNumber;//用户联系方式 private String phoneNumber;//用户联系方式
private String address;//家庭住址 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;
}
} }

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@ -4,10 +4,12 @@ import lombok.Data;
//订单中的菜品 //订单中的菜品
@Data @Data
public class indentItem { 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 String name;//菜品名字
private Float initialPrice;//菜品原价 private Float initialPrice;//菜品原价
private Float discount;//折扣 private Float discount;//折扣
private Float finalPrice;//最终价格 private Float finalPrice;//最终价格
private String description;//菜品描述 private String description;//菜品描述
private Indent indentID;//订单ID
} }

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@ -1,7 +1,9 @@
package example; package example;
import entities.*;
public class App { public class App {
public static void main(String[] args) { public static void main(String[] args) {
System.out.println("Hello World!"); System.out.println("你好世界!Hello World!");
} }
} }

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@ -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:
}
}
}

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@ -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();
}
}
}