一个基于Spring Boot的简单网吧管理系统

一个基于Spring Boot的简单网吧管理系统的案例代码。这个系统包括用户管理、电脑管理、上机记录管理等功能。代码结构清晰，适合初学者学习和参考。

1. 项目结构

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src/main/java/com/example/netbarmanagement
    ├── controller
    │   ├── ComputerController.java
    │   ├── UserController.java
    │   └── RecordController.java
    ├── model
    │   ├── Computer.java
    │   ├── User.java
    │   └── Record.java
    ├── repository
    │   ├── ComputerRepository.java
    │   ├── UserRepository.java
    │   └── RecordRepository.java
    ├── service
    │   ├── ComputerService.java
    │   ├── UserService.java
    │   └── RecordService.java
    └── NetbarManagementApplication.java

2. 依赖配置 (`pom.xml`)

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<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-validation</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

3. 实体类 (`model` 包)

`Computer.java`

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package com.example.netbarmanagement.model;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Computer {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private boolean isOccupied;

    // Getters and Setters
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public boolean isOccupied() {
        return isOccupied;
    }

    public void setOccupied(boolean occupied) {
        isOccupied = occupied;
    }
}

`User.java`

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package com.example.netbarmanagement.model;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String username;
    private String password;

    // Getters and Setters
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

`Record.java`

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package com.example.netbarmanagement.model;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import java.time.LocalDateTime;

@Entity
public class Record {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private Long userId;
    private Long computerId;
    private LocalDateTime startTime;
    private LocalDateTime endTime;

    // Getters and Setters
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Long getUserId() {
        return userId;
    }

    public void setUserId(Long userId) {
        this.userId = userId;
    }

    public Long getComputerId() {
        return computerId;
    }

    public void setComputerId(Long computerId) {
        this.computerId = computerId;
    }

    public LocalDateTime getStartTime() {
        return startTime;
    }

    public void setStartTime(LocalDateTime startTime) {
        this.startTime = startTime;
    }

    public LocalDateTime getEndTime() {
        return endTime;
    }

    public void setEndTime(LocalDateTime endTime) {
        this.endTime = endTime;
    }
}

4. 仓库接口 (`repository` 包)

`ComputerRepository.java`

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package com.example.netbarmanagement.repository;

import com.example.netbarmanagement.model.Computer;
import org.springframework.data.jpa.repository.JpaRepository;

public interface ComputerRepository extends JpaRepository<Computer, Long> {
}

`UserRepository.java`

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package com.example.netbarmanagement.repository;

import com.example.netbarmanagement.model.User;
import org.springframework.data.jpa.repository.JpaRepository;

public interface UserRepository extends JpaRepository<User, Long> {
}

`RecordRepository.java`

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package com.example.netbarmanagement.repository;

import com.example.netbarmanagement.model.Record;
import org.springframework.data.jpa.repository.JpaRepository;

public interface RecordRepository extends JpaRepository<Record, Long> {
}

5. 服务层 (`service` 包)

`ComputerService.java`

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package com.example.netbarmanagement.service;

import com.example.netbarmanagement.model.Computer;
import com.example.netbarmanagement.repository.ComputerRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class ComputerService {
    @Autowired
    private ComputerRepository computerRepository;

    public List<Computer> getAllComputers() {
        return computerRepository.findAll();
    }

    public Computer getComputerById(Long id) {
        return computerRepository.findById(id).orElse(null);
    }

    public Computer saveComputer(Computer computer) {
        return computerRepository.save(computer);
    }

    public void deleteComputer(Long id) {
        computerRepository.deleteById(id);
    }
}

`UserService.java`

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package com.example.netbarmanagement.service;

import com.example.netbarmanagement.model.User;
import com.example.netbarmanagement.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;

    public List<User> getAllUsers() {
        return userRepository.findAll();
    }

    public User getUserById(Long id) {
        return userRepository.findById(id).orElse(null);
    }

    public User saveUser(User user) {
        return userRepository.save(user);
    }

    public void deleteUser(Long id) {
        userRepository.deleteById(id);
    }
}

`RecordService.java`

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package com.example.netbarmanagement.service;

import com.example.netbarmanagement.model.Record;
import com.example.netbarmanagement.repository.RecordRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class RecordService {
    @Autowired
    private RecordRepository recordRepository;

    public List<Record> getAllRecords() {
        return recordRepository.findAll();
    }

    public Record getRecordById(Long id) {
        return recordRepository.findById(id).orElse(null);
    }

    public Record saveRecord(Record record) {
        return recordRepository.save(record);
    }

    public void deleteRecord(Long id) {
        recordRepository.deleteById(id);
    }
}

6. 控制器层 (`controller` 包)

`ComputerController.java`

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package com.example.netbarmanagement.controller;

import com.example.netbarmanagement.model.Computer;
import com.example.netbarmanagement.service.ComputerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/computers")
public class ComputerController {
    @Autowired
    private ComputerService computerService;

    @GetMapping
    public List<Computer> getAllComputers() {
        return computerService.getAllComputers();
    }

    @GetMapping("/{id}")
    public Computer getComputerById(@PathVariable Long id) {
        return computerService.getComputerById(id);
    }

    @PostMapping
    public Computer createComputer(@RequestBody Computer computer) {
        return computerService.saveComputer(computer);
    }

    @PutMapping("/{id}")
    public Computer updateComputer(@PathVariable Long id, @RequestBody Computer computer) {
        computer.setId(id);
        return computerService.saveComputer(computer);
    }

    @DeleteMapping("/{id}")
    public void deleteComputer(@PathVariable Long id) {
        computerService.deleteComputer(id);
    }
}

`UserController.java`

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package com.example.netbarmanagement.controller;

import com.example.netbarmanagement.model.User;
import com.example.netbarmanagement.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/users")
public class UserController {
    @Autowired
    private UserService userService;

    @GetMapping
    public List<User> getAllUsers() {
        return userService.getAllUsers();
    }

    @GetMapping("/{id}")
    public User getUserById(@PathVariable Long id) {
        return userService.getUserById(id);
    }

    @PostMapping
    public User createUser(@RequestBody User user) {
        return userService.saveUser(user);
    }

    @PutMapping("/{id}")
    public User updateUser(@PathVariable Long id, @RequestBody User user) {
        user.setId(id);
        return userService.saveUser(user);
    }

    @DeleteMapping("/{id}")
    public void deleteUser(@PathVariable Long id) {
        userService.deleteUser(id);
    }
}

`RecordController.java`

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package com.example.netbarmanagement.controller;

import com.example.netbarmanagement.model.Record;
import com.example.netbarmanagement.service.RecordService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/records")
public class RecordController {
    @Autowired
    private RecordService recordService;

    @GetMapping
    public List<Record> getAllRecords() {
        return recordService.getAllRecords();
    }

    @GetMapping("/{id}")
    public Record getRecordById(@PathVariable Long id) {
        return recordService.getRecordById(id);
    }

    @PostMapping
    public Record createRecord(@RequestBody Record record) {
        return recordService.saveRecord(record);
    }

    @PutMapping("/{id}")
    public Record updateRecord(@PathVariable Long id, @RequestBody Record record) {
        record.setId(id);
        return recordService.saveRecord(record);
    }

    @DeleteMapping("/{id}")
    public void deleteRecord(@PathVariable Long id) {
        recordService.deleteRecord(id);
    }
}

7. 主应用类 (`NetbarManagementApplication.java`)

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package com.example.netbarmanagement;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class NetbarManagementApplication {
    public static void main(String[] args) {
        SpringApplication.run(NetbarManagementApplication.class, args);
    }
}

8. 配置文件 (`application.properties`)

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spring.datasource.url=jdbc:h2:mem:netbar
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=password
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.h2.console.enabled=true

9. 运行项目

使用 mvn spring-boot:run 命令运行项目。
访问 http://localhost:8080/h2-console 查看H2数据库。
使用API工具（如Postman）测试各个接口。

10. 扩展功能

添加用户登录和权限管理（使用Spring Security）。
添加计费功能，根据上机时间计算费用。
添加前端页面（使用Thymeleaf或Vue.js等前端框架）。

这个案例代码是一个基础的网吧管理系统，适合初学者学习和扩展。你可以根据实际需求进一步开发和优化。

一个基于Spring Boot的简单网吧管理系统

1. 项目结构

2. 依赖配置 (pom.xml)

3. 实体类 (model 包)

Computer.java

User.java

Record.java

4. 仓库接口 (repository 包)

ComputerRepository.java

UserRepository.java

RecordRepository.java

5. 服务层 (service 包)

ComputerService.java

UserService.java

RecordService.java

6. 控制器层 (controller 包)

ComputerController.java

UserController.java

RecordController.java

7. 主应用类 (NetbarManagementApplication.java)

8. 配置文件 (application.properties)

9. 运行项目

10. 扩展功能

2. 依赖配置 (`pom.xml`)

3. 实体类 (`model` 包)

`Computer.java`

`User.java`

`Record.java`

4. 仓库接口 (`repository` 包)

`ComputerRepository.java`

`UserRepository.java`

`RecordRepository.java`

5. 服务层 (`service` 包)

`ComputerService.java`

`UserService.java`

`RecordService.java`

6. 控制器层 (`controller` 包)

`ComputerController.java`

`UserController.java`

`RecordController.java`

7. 主应用类 (`NetbarManagementApplication.java`)

8. 配置文件 (`application.properties`)