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
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.java2. 依赖配置 (pom.xml)
<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
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
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
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
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
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
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
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
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
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
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
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
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)
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)
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=true9. 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。