七天.NET 8操作SQLite入门到实战 - 第六天后端班级管理相关接口完善和Swagger自定义配置-阿里云开发者社区

前言

在上一章节我们在后端框架中引入 SQLite-net ORM 并封装常用方法（SQLiteHelper），今天我们的任务是设计好班级管理相关的表、完善后端班级管理相关接口并对Swagger自定义配置。

七天.NET 8 操作 SQLite 入门到实战详细教程

EasySQLite 项目源码地址

GitHub 地址：https://github.com/YSGStudyHards/EasySQLite

班级管理相关的表设计

班级表的字段可以包括：

班级ID（ClassID）：用于唯一标识每个班级[主键自增]。
班级名称（ClassName）：班级的名称。
创建时间（CreateTime）：班级创建的时间。

班级学生表的字段可以包括：

学生ID（StudentID）：用于唯一标识每个学生[主键自增]。
班级ID（ClassID）：所属班级的ID，与班级表中的班级ID相关联。
姓名（Name）：学生的姓名。
年龄（Age）：学生的年龄。
性别（Gender）：学生的性别。

班级管理相关的表对应模型

SchoolClass

public class SchoolClass
    {
        /// <summary>
        /// 班级ID [主键，自动递增]
        /// </summary>
        [PrimaryKey, AutoIncrement]
        public int ClassID { get; set; }
        /// <summary>
        /// 班级名称
        /// </summary>
        public string ClassName { get; set; }
        /// <summary>
        /// 创建时间
        /// </summary>
        public DateTime CreateTime { get; set; }
    }

Student

public class Student
    {
        /// <summary>
        /// 学生ID [主键，自动递增]
        /// </summary>
        [PrimaryKey, AutoIncrement]
        public int StudentID { get; set; }
        /// <summary>
        /// 班级ID
        /// </summary>
        public int ClassID { get; set; }
        /// <summary>
        /// 学生姓名
        /// </summary>
        public string Name { get; set; }
        /// <summary>
        /// 学生年龄
        /// </summary>
        public int Age { get; set; }
        /// <summary>
        /// 学生性别
        /// </summary>
        public string Gender { get; set; }
    }

接口统一的响应模型

为了实现统一的响应模型，这里创建一个名为 ApiResponse的泛型类。

public class ApiResponse<T>
    {
        /// <summary>
        /// 是否成功
        /// </summary>
        public bool Success { get; set; }
        /// <summary>
        /// 响应消息
        /// </summary>
        public string Message { get; set; }
        /// <summary>
        /// 返回的数据
        /// </summary>
        public T Data { get; set; }
    }

学校班级管理接口代码

/// <summary>
    /// 学校班级管理
    /// </summary>
    [ApiController]
    [Route("[controller]")]
    public class SchoolClassController : ControllerBase
    {
        private readonly SQLiteAsyncHelper<SchoolClass> _schoolClassHelper;
        /// <summary>
        /// 依赖注入
        /// </summary>
        /// <param name="schoolClassHelper">schoolClassHelper</param>
        public SchoolClassController(SQLiteAsyncHelper<SchoolClass> schoolClassHelper)
        {
            _schoolClassHelper = schoolClassHelper;
        }
        /// <summary>
        /// 班级创建
        /// </summary>
        /// <param name="schoolClass">创建班级信息</param>
        /// <returns></returns>
        [HttpPost]
        public async Task<ApiResponse<int>> CreateClass([FromBody] SchoolClass schoolClass)
        {
            try
            {
                int insertNumbers = await _schoolClassHelper.InsertAsync(schoolClass);
                if (insertNumbers > 0)
                {
                    return new ApiResponse<int>
                    {
                        Success = true,
                        Message = "创建班级成功"
                    };
                }
                else
                {
                    return new ApiResponse<int>
                    {
                        Success = false,
                        Message = "创建班级失败"
                    };
                }
            }
            catch (Exception ex)
            {
                return new ApiResponse<int>
                {
                    Success = false,
                    Message = ex.Message
                };
            }
        }
        /// <summary>
        /// 获取所有班级信息
        /// </summary>
        [HttpGet]
        public async Task<ApiResponse<List<SchoolClass>>> GetClasses()
        {
            try
            {
                var classes = await _schoolClassHelper.QueryAllAsync().ConfigureAwait(false);
                return new ApiResponse<List<SchoolClass>>
                {
                    Success = true,
                    Data = classes
                };
            }
            catch (Exception ex)
            {
                return new ApiResponse<List<SchoolClass>>
                {
                    Success = false,
                    Message = ex.Message
                };
            }
        }
        /// <summary>
        /// 根据班级ID获取班级信息
        /// </summary>
        /// <param name="classId">班级ID</param>
        /// <returns></returns>
        [HttpGet("{classId}")]
        public async Task<ApiResponse<SchoolClass>> GetClass(int classId)
        {
            try
            {
                var schoolClass = await _schoolClassHelper.QuerySingleAsync(c => c.ClassID == classId).ConfigureAwait(false);
                if (schoolClass != null)
                {
                    return new ApiResponse<SchoolClass>
                    {
                        Success = true,
                        Data = schoolClass
                    };
                }
                else
                {
                    return new ApiResponse<SchoolClass>
                    {
                        Success = false,
                        Message = "班级不存在"
                    };
                }
            }
            catch (Exception ex)
            {
                return new ApiResponse<SchoolClass>
                {
                    Success = false,
                    Message = ex.Message
                };
            }
        }
        /// <summary>
        /// 更新班级信息
        /// </summary>
        /// <param name="classId">班级ID</param>
        /// <param name="updatedClass">更新的班级信息</param>
        /// <returns></returns>
        [HttpPut("{classId}")]
        public async Task<ApiResponse<int>> UpdateClass(int classId, [FromBody] SchoolClass updatedClass)
        {
            try
            {
                var existingClass = await _schoolClassHelper.QuerySingleAsync(c => c.ClassID == classId).ConfigureAwait(false);
                if (existingClass != null)
                {
                    existingClass.ClassName = updatedClass.ClassName;
                    var updateResult = await _schoolClassHelper.UpdateAsync(existingClass).ConfigureAwait(false);
                    if (updateResult > 0)
                    {
                        return new ApiResponse<int>
                        {
                            Success = true,
                            Message = "班级信息更新成功"
                        };
                    }
                    else
                    {
                        return new ApiResponse<int>
                        {
                            Success = false,
                            Message = "班级信息更新失败"
                        };
                    }
                }
                else
                {
                    return new ApiResponse<int>
                    {
                        Success = false,
                        Message = "班级不存在"
                    };
                }
            }
            catch (Exception ex)
            {
                return new ApiResponse<int>
                {
                    Success = false,
                    Message = ex.Message
                };
            }
        }
        /// <summary>
        /// 班级删除
        /// </summary>
        /// <param name="classId">班级ID</param>
        /// <returns></returns>
        [HttpDelete("{classId}")]
        public async Task<ApiResponse<int>> DeleteClass(int classId)
        {
            try
            {
                var deleteResult = await _schoolClassHelper.DeleteAsync(classId).ConfigureAwait(false);
                if (deleteResult > 0)
                {
                    return new ApiResponse<int>
                    {
                        Success = true,
                        Message = "班级删除成功"
                    };
                }
                else
                {
                    return new ApiResponse<int>
                    {
                        Success = true,
                        Message = "班级删除失败"
                    };
                }
            }
            catch (Exception ex)
            {
                return new ApiResponse<int>
                {
                    Success = false,
                    Message = ex.Message
                };
            }
        }
    }

学生管理接口代码

/// <summary>
    /// 学生管理
    /// </summary>
    [ApiController]
    [Route("[controller]")]
    public class StudentController : ControllerBase
    {
        private readonly SQLiteAsyncHelper<Student> _studentHelper;
        /// <summary>
        /// 依赖注入
        /// </summary>
        /// <param name="studentHelper">studentHelper</param>
        public StudentController(SQLiteAsyncHelper<Student> studentHelper)
        {
            _studentHelper = studentHelper;
        }
        /// <summary>
        /// 创建新的学生记录
        /// </summary>
        /// <param name="student">添加的学生信息</param>
        /// <returns></returns>
        [HttpPost]
        public async Task<ApiResponse<int>> CreateAsync([FromBody] Student student)
        {
            var response = new ApiResponse<int>();
            try
            {
                var insertNumbers = await _studentHelper.InsertAsync(student).ConfigureAwait(false);
                if (insertNumbers > 0)
                {
                    response.Success = true;
                    response.Message = "添加成功";
                }
                else
                {
                    response.Success = false;
                    response.Message = "插入失败";
                }
            }
            catch (Exception ex)
            {
                response.Success = false;
                response.Message = ex.Message;
            }
            return response;
        }
        /// <summary>
        /// 查询所有学生记录
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        public async Task<ApiResponse<List<Student>>> GetAllAsync()
        {
            var response = new ApiResponse<List<Student>>();
            try
            {
                var students = await _studentHelper.QueryAllAsync().ConfigureAwait(false);
                response.Success = true;
                response.Data = students;
            }
            catch (Exception ex)
            {
                response.Success = false;
                response.Message = ex.Message;
            }
            return response;
        }
        /// <summary>
        /// 根据学生ID查询学生信息
        /// </summary>
        /// <param name="studentID">学生ID</param>
        /// <returns></returns>
        [HttpGet("{studentID}")]
        public async Task<ApiResponse<Student>> GetByIdAsync(int studentID)
        {
            var response = new ApiResponse<Student>();
            try
            {
                var student = await _studentHelper.QuerySingleAsync(x => x.StudentID == studentID).ConfigureAwait(false);
                if (student != null)
                {
                    response.Success = true;
                    response.Data = student;
                }
                else
                {
                    response.Success = false;
                    response.Message = "未找到学生信息";
                }
            }
            catch (Exception ex)
            {
                response.Success = false;
                response.Message = ex.Message;
            }
            return response;
        }
        /// <summary>
        /// 更新学生记录
        /// </summary>
        /// <param name="studentID">学生ID</param>
        /// <param name="editstudent">更新的学生信息</param>
        /// <returns></returns>
        [HttpPut("{studentID}")]
        public async Task<ApiResponse<int>> UpdateAsync(int studentID, [FromBody] Student editstudent)
        {
            var response = new ApiResponse<int>();
            try
            {
                var student = await _studentHelper.QuerySingleAsync(x => x.StudentID == studentID).ConfigureAwait(false);
                if (student != null)
                {
                    student.Age = editstudent.Age;
                    student.Name = editstudent.Name;
                    student.Gender = editstudent.Gender;
                    student.ClassID = editstudent.ClassID;
                    int updateResult = await _studentHelper.UpdateAsync(student).ConfigureAwait(false);
                    if (updateResult > 0)
                    {
                        response.Success = true;
                        response.Message = "学生信息更新成功";
                    }
                    else
                    {
                        response.Success = false;
                        response.Message = "学生信息更新失败";
                    }
                }
                else
                {
                    response.Success = false;
                    response.Message = "未找到学生信息";
                }
            }
            catch (Exception ex)
            {
                response.Success = false;
                response.Message = ex.Message;
            }
            return response;
        }
        /// <summary>
        /// 删除学生记录
        /// </summary>
        /// <param name="studentID">学生ID</param>
        /// <returns></returns>
        [HttpDelete("{studentID}")]
        public async Task<ApiResponse<int>> DeleteAsync(int studentID)
        {
            var response = new ApiResponse<int>();
            try
            {
                int deleteResult = await _studentHelper.DeleteAsync(studentID).ConfigureAwait(false);
                if (deleteResult > 0)
                {
                    response.Success = true;
                    response.Message = "删除成功";
                }
                else
                {
                    response.Success = false;
                    response.Message = "未找到学生信息";
                }
            }
            catch (Exception ex)
            {
                response.Success = false;
                response.Message = ex.Message;
            }
            return response;
        }
    }

对应服务注册

在Program.cs类中：

// 注册服务
builder.Services.AddScoped<SQLiteAsyncHelper<SchoolClass>>();
builder.Services.AddScoped<SQLiteAsyncHelper<Student>>();

Swagger自定义和扩展

Swagger 提供了为对象模型进行归档和自定义 UI 以匹配你的主题的选项。

传递给 AddSwaggerGen 方法的配置操作会添加诸如作者、许可证和说明的信息。在 Program.cs 中添加如下Swagger自定义配置：

// 添加Swagger服务
            builder.Services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new OpenApiInfo
                {
                    Title = "EasySQLite API",
                    Version = "V1",
                    Description = ".NET 8操作SQLite入门到实战",
                    Contact = new OpenApiContact
                    {
                        Name = "GitHub源码地址",
                        Url = new Uri("https://github.com/YSGStudyHards/EasySQLite")
                    }
                });
                // 获取xml文件名
                var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
                // 获取xml文件路径
                var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
                // 添加控制器层注释，true表示显示控制器注释
                options.IncludeXmlComments(xmlPath, true);
                // 对action的名称进行排序，如果有多个，就可以看见效果了
                options.OrderActionsBy(o => o.RelativePath);
            });